Add configuration for whether to resolve failed conditions or not

This is technically a breaking change, but given how long ago this field was implemented as well as the fact that this is the default value if the type is not specified, I doubt anybody's explicitly setting it as inmemory

.dockerignore

@@ -1,6 +1,7 @@
-example
+examples
 Dockerfile
 .github
 .idea
 .git
-web/app
+web/app
+*.db

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: [TwinProduction]

.github/assets/gatus-diagram.drawio

@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2021-09-12T22:49:28.336Z" agent="5.0 (Windows)" etag="r9FJ6Bphqwq-LaTO-jp3" version="15.0.6" type="device"><diagram id="FBbfVOMCjf6Z2LK8Yagy" name="Page-1">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</diagram></mxfile>

.github/codecov.yml

@@ -1,5 +1,6 @@
 ignore:
   - "watchdog/watchdog.go"
+  - "storage/store/sql/specific_postgres.go" # Can't test for postgres
 
 coverage:
   status:

.github/workflows/build.yml

@@ -28,6 +28,6 @@ jobs:
         # was configured by the "Set up Go 1.15" step (otherwise, it'd use sudo's "go" executable)
         run: sudo env "PATH=$PATH" "GOROOT=$GOROOT" go test -mod vendor ./... -race -coverprofile=coverage.txt -covermode=atomic
       - name: Codecov
-        uses: codecov/codecov-action@v1.0.14
+        uses: codecov/codecov-action@v1.5.2
         with:
           file: ./coverage.txt

.github/workflows/publish-latest.yml

@@ -0,0 +1,34 @@
+name: publish-latest
+on:
+  workflow_run:
+    workflows: ["build"]
+    branches: [master]
+    types: [completed]
+jobs:
+  publish-latest:
+    name: Publish latest
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    timeout-minutes: 30
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+      - name: Get image repository
+        run: echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to Docker Registry
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Build and push docker image
+        uses: docker/build-push-action@v2
+        with:
+          platforms: linux/amd64
+          pull: true
+          push: true
+          tags: |
+            ${{ env.IMAGE_REPOSITORY }}:latest

.github/workflows/publish-release.yml

@@ -0,0 +1,33 @@
+name: publish-release
+on:
+  release:
+    types: [published]
+jobs:
+  publish-release:
+    name: Publish release
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+      - name: Get image repository
+        run: echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
+      - name: Get the release
+        run: echo RELEASE=${GITHUB_REF/refs\/tags\//} >> $GITHUB_ENV
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to Docker Registry
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Build and push docker image
+        uses: docker/build-push-action@v2
+        with:
+          platforms: linux/amd64,linux/arm/v7,linux/arm64
+          pull: true
+          push: true
+          tags: |
+            ${{ env.IMAGE_REPOSITORY }}:${{ env.RELEASE }}

.github/workflows/publish.yml

@@ -1,33 +0,0 @@
-name: publish
-on:
-  release:
-    types: [published]
-jobs:
-  build:
-    name: Publish
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v2
-      - name: Get image repository
-        run: echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
-      - name: Get the release
-        run: echo RELEASE=${GITHUB_REF/refs\/tags\//} >> $GITHUB_ENV
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-      - name: Login to Docker Registry
-        uses: docker/login-action@v1
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-      - name: Build and push docker image
-        uses: docker/build-push-action@v2
-        with:
-          platforms: linux/amd64,linux/arm/v7,linux/arm64
-          pull: true
-          push: true
-          tags: |
-            ${{ env.IMAGE_REPOSITORY }}:${{ env.RELEASE }}

.gitignore

@@ -2,4 +2,7 @@
 .vscode
 gatus
 db.db
-config/config.yml
+config/config.yml
+db.db-shm
+db.db-wal
+memory.db

Makefile

@@ -1,14 +1,37 @@
+BINARY=gatus
+
+install:
+	go build -mod vendor -o $(BINARY) .
+
+run:
+	GATUS_CONFIG_FILE=./config.yaml ./$(BINARY)
+
+clean:
+	rm $(BINARY)
+
+test:
+	sudo go test ./alerting/... ./client/... ./config/... ./controller/... ./core/... ./jsonpath/... ./pattern/... ./security/... ./storage/... ./util/... ./watchdog/... -cover
+
+
+##########
+# Docker #
+##########
+
 docker-build:
 	docker build -t twinproduction/gatus:latest .
 
-docker-build-and-run:
-	docker build -t twinproduction/gatus:latest . && docker run -p 8080:8080 --name gatus twinproduction/gatus:latest
+docker-run:
+	docker run -p 8080:8080 --name gatus twinproduction/gatus:latest
 
-build-frontend:
+docker-build-and-run: docker-build docker-run
+
+
+#############
+# Front end #
+#############
+
+frontend-build:
 	npm --prefix web/app run build
 
-run-frontend:
+frontend-run:
 	npm --prefix web/app run serve
-
-test:
-	go test ./alerting/... ./client/... ./config/... ./controller/... ./core/... ./jsonpath/... ./pattern/... ./security/... ./storage/... ./util/... ./watchdog/... -cover

alerting/alert/type.go

@@ -23,6 +23,9 @@ const (
 	// TypeSlack is the Type for the slack alerting provider
 	TypeSlack Type = "slack"
 
+	// TypeTeams is the Type for the teams alerting provider
+	TypeTeams Type = "teams"
+
 	// TypeTelegram is the Type for the telegram alerting provider
 	TypeTelegram Type = "telegram"
 

alerting/config.go

@@ -9,6 +9,7 @@ import (
 	"github.com/TwinProduction/gatus/alerting/provider/messagebird"
 	"github.com/TwinProduction/gatus/alerting/provider/pagerduty"
 	"github.com/TwinProduction/gatus/alerting/provider/slack"
+	"github.com/TwinProduction/gatus/alerting/provider/teams"
 	"github.com/TwinProduction/gatus/alerting/provider/telegram"
 	"github.com/TwinProduction/gatus/alerting/provider/twilio"
 )
@@ -33,6 +34,9 @@ type Config struct {
 	// Slack is the configuration for the slack alerting provider
 	Slack *slack.AlertProvider `yaml:"slack"`
 
+	// Teams is the configuration for the teams alerting provider
+	Teams *teams.AlertProvider `yaml:"teams"`
+
 	// Telegram is the configuration for the telegram alerting provider
 	Telegram *telegram.AlertProvider `yaml:"telegram"`
 
@@ -79,6 +83,12 @@ func (config Config) GetAlertingProviderByAlertType(alertType alert.Type) provid
 			return nil
 		}
 		return config.Slack
+	case alert.TypeTeams:
+		if config.Teams == nil {
+			// Since we're returning an interface, we need to explicitly return nil, even if the provider itself is nil
+			return nil
+		}
+		return config.Teams
 	case alert.TypeTelegram:
 		if config.Telegram == nil {
 			// Since we're returning an interface, we need to explicitly return nil, even if the provider itself is nil

alerting/provider/custom/custom.go

@@ -19,18 +19,23 @@ import (
 type AlertProvider struct {
 	URL          string                       `yaml:"url"`
 	Method       string                       `yaml:"method,omitempty"`
-	Insecure     bool                         `yaml:"insecure,omitempty"`
 	Body         string                       `yaml:"body,omitempty"`
 	Headers      map[string]string            `yaml:"headers,omitempty"`
 	Placeholders map[string]map[string]string `yaml:"placeholders,omitempty"`
 
+	// ClientConfig is the configuration of the client used to communicate with the provider's target
+	ClientConfig *client.Config `yaml:"client"`
+
 	// DefaultAlert is the default alert configuration to use for services with an alert of the appropriate type
 	DefaultAlert *alert.Alert `yaml:"default-alert"`
 }
 
 // IsValid returns whether the provider's configuration is valid
 func (provider *AlertProvider) IsValid() bool {
-	return len(provider.URL) > 0
+	if provider.ClientConfig == nil {
+		provider.ClientConfig = client.GetDefaultConfig()
+	}
+	return len(provider.URL) > 0 && provider.ClientConfig != nil
 }
 
 // ToCustomAlertProvider converts the provider into a custom.AlertProvider
@@ -103,7 +108,7 @@ func (provider *AlertProvider) Send(serviceName, alertDescription string, resolv
 		return []byte("{}"), nil
 	}
 	request := provider.buildHTTPRequest(serviceName, alertDescription, resolved)
-	response, err := client.GetHTTPClient(provider.Insecure).Do(request)
+	response, err := client.GetHTTPClient(provider.ClientConfig).Do(request)
 	if err != nil {
 		return nil, err
 	}

alerting/provider/discord/discord.go

@@ -42,6 +42,10 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
 		}
 		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
 	}
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = ":\\n> " + alertDescription
+	}
 	return &custom.AlertProvider{
 		URL:    provider.WebhookURL,
 		Method: http.MethodPost,
@@ -50,7 +54,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
   "embeds": [
     {
       "title": ":helmet_with_white_cross: Gatus",
-      "description": "%s:\n> %s",
+      "description": "%s%s",
       "color": %d,
       "fields": [
         {
@@ -61,7 +65,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
       ]
     }
   ]
-}`, message, alert.GetDescription(), colorCode, results),
+}`, message, description, colorCode, results),
 		Headers: map[string]string{"Content-Type": "application/json"},
 	}
 }

alerting/provider/discord/discord_test.go

@@ -23,7 +23,8 @@ func TestAlertProvider_IsValid(t *testing.T) {
 
 func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
 	provider := AlertProvider{WebhookURL: "http://example.com"}
-	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{}, &alert.Alert{}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
+	alertDescription := "test"
+	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{Name: "svc"}, &alert.Alert{Description: &alertDescription}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
 	if customAlertProvider == nil {
 		t.Fatal("customAlertProvider shouldn't have been nil")
 	}
@@ -41,6 +42,9 @@ func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
 	if err != nil {
 		t.Error("expected body to be valid JSON, got error:", err.Error())
 	}
+	if expected := "An alert for **svc** has been resolved after passing successfully 0 time(s) in a row:\n> test"; expected != body["embeds"].([]interface{})[0].(map[string]interface{})["description"] {
+		t.Errorf("expected $.embeds[0].description to be %s, got %s", expected, body["embeds"].([]interface{})[0].(map[string]interface{})["description"])
+	}
 }
 
 func TestAlertProvider_ToCustomAlertProviderWithTriggeredAlert(t *testing.T) {

alerting/provider/mattermost/mattermost.go

@@ -6,13 +6,16 @@ import (
 
 	"github.com/TwinProduction/gatus/alerting/alert"
 	"github.com/TwinProduction/gatus/alerting/provider/custom"
+	"github.com/TwinProduction/gatus/client"
 	"github.com/TwinProduction/gatus/core"
 )
 
 // AlertProvider is the configuration necessary for sending an alert using Mattermost
 type AlertProvider struct {
 	WebhookURL string `yaml:"webhook-url"`
-	Insecure   bool   `yaml:"insecure,omitempty"`
+
+	// ClientConfig is the configuration of the client used to communicate with the provider's target
+	ClientConfig *client.Config `yaml:"client"`
 
 	// DefaultAlert is the default alert configuration to use for services with an alert of the appropriate type
 	DefaultAlert *alert.Alert `yaml:"default-alert"`
@@ -20,6 +23,9 @@ type AlertProvider struct {
 
 // IsValid returns whether the provider's configuration is valid
 func (provider *AlertProvider) IsValid() bool {
+	if provider.ClientConfig == nil {
+		provider.ClientConfig = client.GetDefaultConfig()
+	}
 	return len(provider.WebhookURL) > 0
 }
 
@@ -44,10 +50,14 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
 		}
 		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
 	}
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = ":\\n> " + alertDescription
+	}
 	return &custom.AlertProvider{
-		URL:      provider.WebhookURL,
-		Method:   http.MethodPost,
-		Insecure: provider.Insecure,
+		URL:          provider.WebhookURL,
+		Method:       http.MethodPost,
+		ClientConfig: provider.ClientConfig,
 		Body: fmt.Sprintf(`{
   "text": "",
   "username": "gatus",
@@ -56,7 +66,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
     {
       "title": ":rescue_worker_helmet: Gatus",
       "fallback": "Gatus - %s",
-      "text": "%s:\n> %s",
+      "text": "%s%s",
       "short": false,
       "color": "%s",
       "fields": [
@@ -73,7 +83,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
       ]
     }
   ]
-}`, message, message, alert.GetDescription(), color, service.URL, results),
+}`, message, message, description, color, service.URL, results),
 		Headers: map[string]string{"Content-Type": "application/json"},
 	}
 }

alerting/provider/mattermost/mattermost_test.go

@@ -23,7 +23,8 @@ func TestAlertProvider_IsValid(t *testing.T) {
 
 func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
 	provider := AlertProvider{WebhookURL: "http://example.org"}
-	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{}, &alert.Alert{}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
+	alertDescription := "test"
+	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{Name: "svc"}, &alert.Alert{Description: &alertDescription}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
 	if customAlertProvider == nil {
 		t.Fatal("customAlertProvider shouldn't have been nil")
 	}
@@ -41,6 +42,9 @@ func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
 	if err != nil {
 		t.Error("expected body to be valid JSON, got error:", err.Error())
 	}
+	if expected := "An alert for *svc* has been resolved after passing successfully 0 time(s) in a row:\n> test"; expected != body["attachments"].([]interface{})[0].(map[string]interface{})["text"] {
+		t.Errorf("expected $.attachments[0].description to be %s, got %s", expected, body["attachments"].([]interface{})[0].(map[string]interface{})["text"])
+	}
 }
 
 func TestAlertProvider_ToCustomAlertProviderWithTriggeredAlert(t *testing.T) {

alerting/provider/pagerduty/pagerduty.go

@@ -9,6 +9,10 @@ import (
 	"github.com/TwinProduction/gatus/core"
 )
 
+const (
+	restAPIURL = "https://events.pagerduty.com/v2/enqueue"
+)
+
 // AlertProvider is the configuration necessary for sending an alert using PagerDuty
 type AlertProvider struct {
 	IntegrationKey string `yaml:"integration-key"`
@@ -37,7 +41,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
 		resolveKey = ""
 	}
 	return &custom.AlertProvider{
-		URL:    "https://events.pagerduty.com/v2/enqueue",
+		URL:    restAPIURL,
 		Method: http.MethodPost,
 		Body: fmt.Sprintf(`{
   "routing_key": "%s",

alerting/provider/provider.go

@@ -8,6 +8,7 @@ import (
 	"github.com/TwinProduction/gatus/alerting/provider/messagebird"
 	"github.com/TwinProduction/gatus/alerting/provider/pagerduty"
 	"github.com/TwinProduction/gatus/alerting/provider/slack"
+	"github.com/TwinProduction/gatus/alerting/provider/teams"
 	"github.com/TwinProduction/gatus/alerting/provider/telegram"
 	"github.com/TwinProduction/gatus/alerting/provider/twilio"
 	"github.com/TwinProduction/gatus/core"
@@ -55,6 +56,7 @@ var (
 	_ AlertProvider = (*messagebird.AlertProvider)(nil)
 	_ AlertProvider = (*pagerduty.AlertProvider)(nil)
 	_ AlertProvider = (*slack.AlertProvider)(nil)
+	_ AlertProvider = (*teams.AlertProvider)(nil)
 	_ AlertProvider = (*telegram.AlertProvider)(nil)
 	_ AlertProvider = (*twilio.AlertProvider)(nil)
 )

alerting/provider/slack/slack.go

@@ -41,6 +41,10 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
 		}
 		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
 	}
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = ":\\n> " + alertDescription
+	}
 	return &custom.AlertProvider{
 		URL:    provider.WebhookURL,
 		Method: http.MethodPost,
@@ -49,7 +53,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
   "attachments": [
     {
       "title": ":helmet_with_white_cross: Gatus",
-      "text": "%s:\n> %s",
+      "text": "%s%s",
       "short": false,
       "color": "%s",
       "fields": [
@@ -61,7 +65,7 @@ func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, aler
       ]
     }
   ]
-}`, message, alert.GetDescription(), color, results),
+}`, message, description, color, results),
 		Headers: map[string]string{"Content-Type": "application/json"},
 	}
 }

alerting/provider/slack/slack_test.go

@@ -23,7 +23,8 @@ func TestAlertProvider_IsValid(t *testing.T) {
 
 func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
 	provider := AlertProvider{WebhookURL: "http://example.com"}
-	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{}, &alert.Alert{}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
+	alertDescription := "test"
+	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{Name: "svc"}, &alert.Alert{Description: &alertDescription}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
 	if customAlertProvider == nil {
 		t.Fatal("customAlertProvider shouldn't have been nil")
 	}
@@ -41,6 +42,9 @@ func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
 	if err != nil {
 		t.Error("expected body to be valid JSON, got error:", err.Error())
 	}
+	if expected := "An alert for *svc* has been resolved after passing successfully 0 time(s) in a row:\n> test"; expected != body["attachments"].([]interface{})[0].(map[string]interface{})["text"] {
+		t.Errorf("expected $.attachments[0].description to be %s, got %s", expected, body["attachments"].([]interface{})[0].(map[string]interface{})["text"])
+	}
 }
 
 func TestAlertProvider_ToCustomAlertProviderWithTriggeredAlert(t *testing.T) {

alerting/provider/teams/teams.go

@@ -0,0 +1,77 @@
+package teams
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/TwinProduction/gatus/alerting/alert"
+	"github.com/TwinProduction/gatus/alerting/provider/custom"
+	"github.com/TwinProduction/gatus/core"
+)
+
+// AlertProvider is the configuration necessary for sending an alert using Teams
+type AlertProvider struct {
+	WebhookURL string `yaml:"webhook-url"`
+
+	// DefaultAlert is the default alert configuration to use for services with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert"`
+}
+
+// IsValid returns whether the provider's configuration is valid
+func (provider *AlertProvider) IsValid() bool {
+	return len(provider.WebhookURL) > 0
+}
+
+// ToCustomAlertProvider converts the provider into a custom.AlertProvider
+func (provider *AlertProvider) ToCustomAlertProvider(service *core.Service, alert *alert.Alert, result *core.Result, resolved bool) *custom.AlertProvider {
+	var message string
+	var color string
+	if resolved {
+		message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", service.Name, alert.SuccessThreshold)
+		color = "#36A64F"
+	} else {
+		message = fmt.Sprintf("An alert for *%s* has been triggered due to having failed %d time(s) in a row", service.Name, alert.FailureThreshold)
+		color = "#DD0000"
+	}
+	var results string
+	for _, conditionResult := range result.ConditionResults {
+		var prefix string
+		if conditionResult.Success {
+			prefix = "✅"
+		} else {
+			prefix = "❌"
+		}
+		results += fmt.Sprintf("%s - `%s`<br/>", prefix, conditionResult.Condition)
+	}
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = ":\\n> " + alertDescription
+	}
+	return &custom.AlertProvider{
+		URL:    provider.WebhookURL,
+		Method: http.MethodPost,
+		Body: fmt.Sprintf(`{
+  "@type": "MessageCard",
+  "@context": "http://schema.org/extensions",
+  "themeColor": "%s",
+  "title": "&#x1F6A8; Gatus",
+  "text": "%s%s",
+  "sections": [
+    {
+      "activityTitle": "URL",
+      "text": "%s"
+    },
+    {
+      "activityTitle": "Condition results",
+      "text": "%s"
+    }
+  ]
+}`, color, message, description, service.URL, results),
+		Headers: map[string]string{"Content-Type": "application/json"},
+	}
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}

alerting/provider/teams/teams_test.go

@@ -0,0 +1,70 @@
+package teams
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwinProduction/gatus/alerting/alert"
+	"github.com/TwinProduction/gatus/core"
+)
+
+func TestAlertProvider_IsValid(t *testing.T) {
+	invalidProvider := AlertProvider{WebhookURL: ""}
+	if invalidProvider.IsValid() {
+		t.Error("provider shouldn't have been valid")
+	}
+	validProvider := AlertProvider{WebhookURL: "http://example.com"}
+	if !validProvider.IsValid() {
+		t.Error("provider should've been valid")
+	}
+}
+
+func TestAlertProvider_ToCustomAlertProviderWithResolvedAlert(t *testing.T) {
+	provider := AlertProvider{WebhookURL: "http://example.org"}
+	alertDescription := "test"
+	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{Name: "svc"}, &alert.Alert{Description: &alertDescription}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "SUCCESSFUL_CONDITION", Success: true}}}, true)
+	if customAlertProvider == nil {
+		t.Fatal("customAlertProvider shouldn't have been nil")
+	}
+	if !strings.Contains(customAlertProvider.Body, "resolved") {
+		t.Error("customAlertProvider.Body should've contained the substring resolved")
+	}
+	if customAlertProvider.URL != "http://example.org" {
+		t.Errorf("expected URL to be %s, got %s", "http://example.org", customAlertProvider.URL)
+	}
+	if customAlertProvider.Method != http.MethodPost {
+		t.Errorf("expected method to be %s, got %s", http.MethodPost, customAlertProvider.Method)
+	}
+	body := make(map[string]interface{})
+	err := json.Unmarshal([]byte(customAlertProvider.Body), &body)
+	if err != nil {
+		t.Error("expected body to be valid JSON, got error:", err.Error())
+	}
+	if expected := "An alert for *svc* has been resolved after passing successfully 0 time(s) in a row:\n> test"; expected != body["text"] {
+		t.Errorf("expected $.text to be %s, got %s", expected, body["text"])
+	}
+}
+
+func TestAlertProvider_ToCustomAlertProviderWithTriggeredAlert(t *testing.T) {
+	provider := AlertProvider{WebhookURL: "http://example.org"}
+	customAlertProvider := provider.ToCustomAlertProvider(&core.Service{}, &alert.Alert{}, &core.Result{ConditionResults: []*core.ConditionResult{{Condition: "UNSUCCESSFUL_CONDITION", Success: false}}}, false)
+	if customAlertProvider == nil {
+		t.Fatal("customAlertProvider shouldn't have been nil")
+	}
+	if !strings.Contains(customAlertProvider.Body, "triggered") {
+		t.Error("customAlertProvider.Body should've contained the substring triggered")
+	}
+	if customAlertProvider.URL != "http://example.org" {
+		t.Errorf("expected URL to be %s, got %s", "http://example.org", customAlertProvider.URL)
+	}
+	if customAlertProvider.Method != http.MethodPost {
+		t.Errorf("expected method to be %s, got %s", http.MethodPost, customAlertProvider.Method)
+	}
+	body := make(map[string]interface{})
+	err := json.Unmarshal([]byte(customAlertProvider.Body), &body)
+	if err != nil {
+		t.Error("expected body to be valid JSON, got error:", err.Error())
+	}
+}

client/client.go

@@ -7,70 +7,24 @@ import (
 	"net"
 	"net/http"
 	"net/smtp"
-	"os"
-	"strconv"
+	"runtime"
 	"strings"
 	"time"
 
 	"github.com/go-ping/ping"
 )
 
-var (
-	secureHTTPClient   *http.Client
-	insecureHTTPClient *http.Client
-
-	// pingTimeout is the timeout for the Ping function
-	// This is mainly exposed for testing purposes
-	pingTimeout = 5 * time.Second
-
-	// httpTimeout is the timeout for secureHTTPClient and insecureHTTPClient
-	httpTimeout = 10 * time.Second
-)
-
-func init() {
-	// XXX: This is an undocumented feature. See https://github.com/TwinProduction/gatus/issues/104.
-	httpTimeoutInSecondsFromEnvironmentVariable := os.Getenv("HTTP_CLIENT_TIMEOUT_IN_SECONDS")
-	if len(httpTimeoutInSecondsFromEnvironmentVariable) > 0 {
-		if httpTimeoutInSeconds, err := strconv.Atoi(httpTimeoutInSecondsFromEnvironmentVariable); err == nil {
-			httpTimeout = time.Duration(httpTimeoutInSeconds) * time.Second
-		}
-	}
-}
-
 // GetHTTPClient returns the shared HTTP client
-func GetHTTPClient(insecure bool) *http.Client {
-	if insecure {
-		if insecureHTTPClient == nil {
-			insecureHTTPClient = &http.Client{
-				Timeout: httpTimeout,
-				Transport: &http.Transport{
-					MaxIdleConns:        100,
-					MaxIdleConnsPerHost: 20,
-					Proxy:               http.ProxyFromEnvironment,
-					TLSClientConfig: &tls.Config{
-						InsecureSkipVerify: true,
-					},
-				},
-			}
-		}
-		return insecureHTTPClient
+func GetHTTPClient(config *Config) *http.Client {
+	if config == nil {
+		return defaultConfig.getHTTPClient()
 	}
-	if secureHTTPClient == nil {
-		secureHTTPClient = &http.Client{
-			Timeout: httpTimeout,
-			Transport: &http.Transport{
-				MaxIdleConns:        100,
-				MaxIdleConnsPerHost: 20,
-				Proxy:               http.ProxyFromEnvironment,
-			},
-		}
-	}
-	return secureHTTPClient
+	return config.getHTTPClient()
 }
 
 // CanCreateTCPConnection checks whether a connection can be established with a TCP service
-func CanCreateTCPConnection(address string) bool {
-	conn, err := net.DialTimeout("tcp", address, 5*time.Second)
+func CanCreateTCPConnection(address string, config *Config) bool {
+	conn, err := net.DialTimeout("tcp", address, config.Timeout)
 	if err != nil {
 		return false
 	}
@@ -79,7 +33,7 @@ func CanCreateTCPConnection(address string) bool {
 }
 
 // CanPerformStartTLS checks whether a connection can be established to an address using the STARTTLS protocol
-func CanPerformStartTLS(address string, insecure bool) (connected bool, certificate *x509.Certificate, err error) {
+func CanPerformStartTLS(address string, config *Config) (connected bool, certificate *x509.Certificate, err error) {
 	hostAndPort := strings.Split(address, ":")
 	if len(hostAndPort) != 2 {
 		return false, nil, errors.New("invalid address for starttls, format must be host:port")
@@ -89,7 +43,7 @@ func CanPerformStartTLS(address string, insecure bool) (connected bool, certific
 		return
 	}
 	err = smtpClient.StartTLS(&tls.Config{
-		InsecureSkipVerify: insecure,
+		InsecureSkipVerify: config.Insecure,
 		ServerName:         hostAndPort[0],
 	})
 	if err != nil {
@@ -106,14 +60,16 @@ func CanPerformStartTLS(address string, insecure bool) (connected bool, certific
 // Ping checks if an address can be pinged and returns the round-trip time if the address can be pinged
 //
 // Note that this function takes at least 100ms, even if the address is 127.0.0.1
-func Ping(address string) (bool, time.Duration) {
+func Ping(address string, config *Config) (bool, time.Duration) {
 	pinger, err := ping.NewPinger(address)
 	if err != nil {
 		return false, 0
 	}
 	pinger.Count = 1
-	pinger.Timeout = pingTimeout
-	pinger.SetPrivileged(true)
+	pinger.Timeout = config.Timeout
+	// Set the pinger's privileged mode to true for every operating system except darwin
+	// https://github.com/TwinProduction/gatus/issues/132
+	pinger.SetPrivileged(runtime.GOOS != "darwin")
 	err = pinger.Run()
 	if err != nil {
 		return false, 0

client/client_test.go

@@ -6,43 +6,34 @@ import (
 )
 
 func TestGetHTTPClient(t *testing.T) {
-	if secureHTTPClient != nil {
-		t.Error("secureHTTPClient should've been nil since it hasn't been called a single time yet")
+	cfg := &Config{
+		Insecure:       false,
+		IgnoreRedirect: false,
+		Timeout:        0,
 	}
-	if insecureHTTPClient != nil {
-		t.Error("insecureHTTPClient should've been nil since it hasn't been called a single time yet")
+	cfg.ValidateAndSetDefaults()
+	if GetHTTPClient(cfg) == nil {
+		t.Error("expected client to not be nil")
 	}
-	_ = GetHTTPClient(false)
-	if secureHTTPClient == nil {
-		t.Error("secureHTTPClient shouldn't have been nil, since it has been called once")
-	}
-	if insecureHTTPClient != nil {
-		t.Error("insecureHTTPClient should've been nil since it hasn't been called a single time yet")
-	}
-	_ = GetHTTPClient(true)
-	if secureHTTPClient == nil {
-		t.Error("secureHTTPClient shouldn't have been nil, since it has been called once")
-	}
-	if insecureHTTPClient == nil {
-		t.Error("insecureHTTPClient shouldn't have been nil, since it has been called once")
+	if GetHTTPClient(nil) == nil {
+		t.Error("expected client to not be nil")
 	}
 }
 
 func TestPing(t *testing.T) {
-	pingTimeout = 500 * time.Millisecond
-	if success, rtt := Ping("127.0.0.1"); !success {
+	if success, rtt := Ping("127.0.0.1", &Config{Timeout: 500 * time.Millisecond}); !success {
 		t.Error("expected true")
 		if rtt == 0 {
 			t.Error("Round-trip time returned on success should've higher than 0")
 		}
 	}
-	if success, rtt := Ping("256.256.256.256"); success {
+	if success, rtt := Ping("256.256.256.256", &Config{Timeout: 500 * time.Millisecond}); success {
 		t.Error("expected false, because the IP is invalid")
 		if rtt != 0 {
 			t.Error("Round-trip time returned on failure should've been 0")
 		}
 	}
-	if success, rtt := Ping("192.168.152.153"); success {
+	if success, rtt := Ping("192.168.152.153", &Config{Timeout: 500 * time.Millisecond}); success {
 		t.Error("expected false, because the IP is valid but the host should be unreachable")
 		if rtt != 0 {
 			t.Error("Round-trip time returned on failure should've been 0")
@@ -88,7 +79,7 @@ func TestCanPerformStartTLS(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			connected, _, err := CanPerformStartTLS(tt.args.address, tt.args.insecure)
+			connected, _, err := CanPerformStartTLS(tt.args.address, &Config{Insecure: tt.args.insecure, Timeout: 5 * time.Second})
 			if (err != nil) != tt.wantErr {
 				t.Errorf("CanPerformStartTLS() err=%v, wantErr=%v", err, tt.wantErr)
 				return
@@ -99,3 +90,9 @@ func TestCanPerformStartTLS(t *testing.T) {
 		})
 	}
 }
+
+func TestCanCreateTCPConnection(t *testing.T) {
+	if CanCreateTCPConnection("127.0.0.1", &Config{Timeout: 5 * time.Second}) {
+		t.Error("should've failed, because there's no port in the address")
+	}
+}

client/config.go

@@ -0,0 +1,73 @@
+package client
+
+import (
+	"crypto/tls"
+	"net/http"
+	"time"
+)
+
+const (
+	defaultHTTPTimeout = 10 * time.Second
+)
+
+var (
+	// DefaultConfig is the default client configuration
+	defaultConfig = Config{
+		Insecure:       false,
+		IgnoreRedirect: false,
+		Timeout:        defaultHTTPTimeout,
+	}
+)
+
+// GetDefaultConfig returns a copy of the default configuration
+func GetDefaultConfig() *Config {
+	cfg := defaultConfig
+	return &cfg
+}
+
+// Config is the configuration for clients
+type Config struct {
+	// Insecure determines whether to skip verifying the server's certificate chain and host name
+	Insecure bool `yaml:"insecure"`
+
+	// IgnoreRedirect determines whether to ignore redirects (true) or follow them (false, default)
+	IgnoreRedirect bool `yaml:"ignore-redirect"`
+
+	// Timeout for the client
+	Timeout time.Duration `yaml:"timeout"`
+
+	httpClient *http.Client
+}
+
+// ValidateAndSetDefaults validates the client configuration and sets the default values if necessary
+func (c *Config) ValidateAndSetDefaults() {
+	if c.Timeout < time.Millisecond {
+		c.Timeout = 10 * time.Second
+	}
+}
+
+// GetHTTPClient return a HTTP client matching the Config's parameters.
+func (c *Config) getHTTPClient() *http.Client {
+	if c.httpClient == nil {
+		c.httpClient = &http.Client{
+			Timeout: c.Timeout,
+			Transport: &http.Transport{
+				MaxIdleConns:        100,
+				MaxIdleConnsPerHost: 20,
+				Proxy:               http.ProxyFromEnvironment,
+				TLSClientConfig: &tls.Config{
+					InsecureSkipVerify: c.Insecure,
+				},
+			},
+			CheckRedirect: func(req *http.Request, via []*http.Request) error {
+				if c.IgnoreRedirect {
+					// Don't follow redirects
+					return http.ErrUseLastResponse
+				}
+				// Follow redirects
+				return nil
+			},
+		}
+	}
+	return c.httpClient
+}

client/config_test.go

@@ -0,0 +1,37 @@
+package client
+
+import (
+	"net/http"
+	"testing"
+	"time"
+)
+
+func TestConfig_getHTTPClient(t *testing.T) {
+	insecureConfig := &Config{Insecure: true}
+	insecureConfig.ValidateAndSetDefaults()
+	insecureClient := insecureConfig.getHTTPClient()
+	if !(insecureClient.Transport).(*http.Transport).TLSClientConfig.InsecureSkipVerify {
+		t.Error("expected Config.Insecure set to true to cause the HTTP client to skip certificate verification")
+	}
+	if insecureClient.Timeout != defaultHTTPTimeout {
+		t.Error("expected Config.Timeout to default the HTTP client to a timeout of 10s")
+	}
+	request, _ := http.NewRequest("GET", "", nil)
+	if err := insecureClient.CheckRedirect(request, nil); err != nil {
+		t.Error("expected Config.IgnoreRedirect set to false to cause the HTTP client's CheckRedirect to return nil")
+	}
+
+	secureConfig := &Config{IgnoreRedirect: true, Timeout: 5 * time.Second}
+	secureConfig.ValidateAndSetDefaults()
+	secureClient := secureConfig.getHTTPClient()
+	if (secureClient.Transport).(*http.Transport).TLSClientConfig.InsecureSkipVerify {
+		t.Error("expected Config.Insecure set to false to cause the HTTP client to not skip certificate verification")
+	}
+	if secureClient.Timeout != 5*time.Second {
+		t.Error("expected Config.Timeout to cause the HTTP client to have a timeout of 5s")
+	}
+	request, _ = http.NewRequest("GET", "", nil)
+	if err := secureClient.CheckRedirect(request, nil); err != http.ErrUseLastResponse {
+		t.Error("expected Config.IgnoreRedirect set to true to cause the HTTP client's CheckRedirect to return http.ErrUseLastResponse")
+	}
+}

config.yaml

@@ -10,14 +10,15 @@ services:
 
   - name: back-end
     group: core
-    url: "http://example.org/"
+    url: "https://example.org/"
     interval: 5m
     conditions:
       - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
 
   - name: monitoring
     group: internal
-    url: "http://example.com/"
+    url: "https://example.org/"
     interval: 5m
     conditions:
       - "[STATUS] == 200"
@@ -29,14 +30,6 @@ services:
     conditions:
       - "[STATUS] == 200"
 
-  - name: cat-fact
-    url: "https://cat-fact.herokuapp.com/facts/random"
-    interval: 5m
-    conditions:
-      - "[STATUS] == 200"
-      - "[BODY].deleted == false"
-      - "len([BODY].text) > 0"
-
   - name: example-dns-query
     url: "8.8.8.8" # Address of the DNS server to use
     interval: 5m

config/config.go

@@ -11,10 +11,8 @@ import (
 	"github.com/TwinProduction/gatus/alerting/alert"
 	"github.com/TwinProduction/gatus/alerting/provider"
 	"github.com/TwinProduction/gatus/core"
-	"github.com/TwinProduction/gatus/k8s"
 	"github.com/TwinProduction/gatus/security"
 	"github.com/TwinProduction/gatus/storage"
-	"github.com/TwinProduction/gatus/util"
 	"gopkg.in/yaml.v2"
 )
 
@@ -43,6 +41,10 @@ var (
 
 	// ErrInvalidSecurityConfig is an error returned when the security configuration is invalid
 	ErrInvalidSecurityConfig = errors.New("invalid security configuration")
+
+	// StaticFolder is the path to the location of the static folder from the root path of the project
+	// The only reason this is exposed is to allow running tests from a different path than the root path of the project
+	StaticFolder = "./web/static"
 )
 
 // Config is the main configuration structure
@@ -71,15 +73,15 @@ type Config struct {
 	// Services List of services to monitor
 	Services []*core.Service `yaml:"services"`
 
-	// Kubernetes is the Kubernetes configuration
-	Kubernetes *k8s.Config `yaml:"kubernetes"`
-
 	// Storage is the configuration for how the data is stored
 	Storage *storage.Config `yaml:"storage"`
 
 	// Web is the configuration for the web listener
 	Web *WebConfig `yaml:"web"`
 
+	// UI is the configuration for the UI
+	UI *UIConfig `yaml:"ui"`
+
 	filePath        string    // path to the file from which config was loaded from
 	lastFileModTime time.Time // last modification time
 }
@@ -101,6 +103,8 @@ func (config *Config) UpdateLastFileModTime() {
 		if !fileInfo.ModTime().IsZero() {
 			config.lastFileModTime = fileInfo.ModTime()
 		}
+	} else {
+		log.Println("[config][UpdateLastFileModTime] Ran into error updating lastFileModTime:", err.Error())
 	}
 }
 
@@ -149,8 +153,8 @@ func parseAndValidateConfigBytes(yamlBytes []byte) (config *Config, err error) {
 	if err != nil {
 		return
 	}
-	// Check if the configuration file at least has services configured or Kubernetes auto discovery enabled
-	if config == nil || ((config.Services == nil || len(config.Services) == 0) && (config.Kubernetes == nil || !config.Kubernetes.AutoDiscover)) {
+	// Check if the configuration file at least has services configured
+	if config == nil || config.Services == nil || len(config.Services) == 0 {
 		err = ErrNoServiceInConfig
 	} else {
 		// Note that the functions below may panic, and this is on purpose to prevent Gatus from starting with
@@ -162,10 +166,10 @@ func parseAndValidateConfigBytes(yamlBytes []byte) (config *Config, err error) {
 		if err := validateServicesConfig(config); err != nil {
 			return nil, err
 		}
-		if err := validateKubernetesConfig(config); err != nil {
+		if err := validateWebConfig(config); err != nil {
 			return nil, err
 		}
-		if err := validateWebConfig(config); err != nil {
+		if err := validateUIConfig(config); err != nil {
 			return nil, err
 		}
 		if err := validateStorageConfig(config); err != nil {
@@ -177,7 +181,9 @@ func parseAndValidateConfigBytes(yamlBytes []byte) (config *Config, err error) {
 
 func validateStorageConfig(config *Config) error {
 	if config.Storage == nil {
-		config.Storage = &storage.Config{}
+		config.Storage = &storage.Config{
+			Type: storage.TypeMemory,
+		}
 	}
 	err := storage.Initialize(config.Storage)
 	if err != nil {
@@ -186,7 +192,7 @@ func validateStorageConfig(config *Config) error {
 	// Remove all ServiceStatus that represent services which no longer exist in the configuration
 	var keys []string
 	for _, service := range config.Services {
-		keys = append(keys, util.ConvertGroupAndServiceToKey(service.Group, service.Name))
+		keys = append(keys, service.Key())
 	}
 	numberOfServiceStatusesDeleted := storage.Get().DeleteAllServiceStatusesNotInKeys(keys)
 	if numberOfServiceStatusesDeleted > 0 {
@@ -195,31 +201,22 @@ func validateStorageConfig(config *Config) error {
 	return nil
 }
 
-func validateWebConfig(config *Config) error {
-	if config.Web == nil {
-		config.Web = &WebConfig{Address: DefaultAddress, Port: DefaultPort}
+func validateUIConfig(config *Config) error {
+	if config.UI == nil {
+		config.UI = GetDefaultUIConfig()
 	} else {
-		return config.Web.validateAndSetDefaults()
+		if err := config.UI.validateAndSetDefaults(); err != nil {
+			return err
+		}
 	}
 	return nil
 }
 
-// deprecated
-// I don't like the current implementation.
-func validateKubernetesConfig(config *Config) error {
-	if config.Kubernetes != nil && config.Kubernetes.AutoDiscover {
-		if config.Kubernetes.ServiceTemplate == nil {
-			return errors.New("kubernetes.service-template cannot be nil")
-		}
-		if config.Debug {
-			log.Println("[config][validateKubernetesConfig] Automatically discovering Kubernetes services...")
-		}
-		discoveredServices, err := k8s.DiscoverServices(config.Kubernetes)
-		if err != nil {
-			return err
-		}
-		config.Services = append(config.Services, discoveredServices...)
-		log.Printf("[config][validateKubernetesConfig] Discovered %d Kubernetes services", len(discoveredServices))
+func validateWebConfig(config *Config) error {
+	if config.Web == nil {
+		config.Web = GetDefaultWebConfig()
+	} else {
+		return config.Web.validateAndSetDefaults()
 	}
 	return nil
 }
@@ -268,6 +265,7 @@ func validateAlertingConfig(alertingConfig *alerting.Config, services []*core.Se
 		alert.TypeMessagebird,
 		alert.TypePagerDuty,
 		alert.TypeSlack,
+		alert.TypeTeams,
 		alert.TypeTelegram,
 		alert.TypeTwilio,
 	}

config/config_test.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"fmt"
-	"strings"
 	"testing"
 	"time"
 
@@ -14,11 +13,11 @@ import (
 	"github.com/TwinProduction/gatus/alerting/provider/messagebird"
 	"github.com/TwinProduction/gatus/alerting/provider/pagerduty"
 	"github.com/TwinProduction/gatus/alerting/provider/slack"
+	"github.com/TwinProduction/gatus/alerting/provider/teams"
 	"github.com/TwinProduction/gatus/alerting/provider/telegram"
 	"github.com/TwinProduction/gatus/alerting/provider/twilio"
+	"github.com/TwinProduction/gatus/client"
 	"github.com/TwinProduction/gatus/core"
-	"github.com/TwinProduction/gatus/k8stest"
-	v1 "k8s.io/api/core/v1"
 )
 
 func TestLoadFileThatDoesNotExist(t *testing.T) {
@@ -37,20 +36,39 @@ func TestLoadDefaultConfigurationFile(t *testing.T) {
 
 func TestParseAndValidateConfigBytes(t *testing.T) {
 	file := t.TempDir() + "/test.db"
+	StaticFolder = "../web/static"
+	defer func() {
+		StaticFolder = "./web/static"
+	}()
 	config, err := parseAndValidateConfigBytes([]byte(fmt.Sprintf(`
 storage:
   file: %s
+ui:
+  title: Test
 services:
   - name: twinnation
     url: https://twinnation.org/health
     interval: 15s
     conditions:
       - "[STATUS] == 200"
+
   - name: github
     url: https://api.github.com/healthz
+    client:
+      insecure: true
+      ignore-redirect: true
+      timeout: 5s
     conditions:
       - "[STATUS] != 400"
       - "[STATUS] != 500"
+
+  - name: example
+    url: https://example.com/
+    interval: 30m
+    client:
+      insecure: true
+    conditions:
+      - "[STATUS] == 200"
 `, file)))
 	if err != nil {
 		t.Error("expected no error, got", err.Error())
@@ -58,33 +76,78 @@ services:
 	if config == nil {
 		t.Fatal("Config shouldn't have been nil")
 	}
-	if len(config.Services) != 2 {
+	if config.UI == nil || config.UI.Title != "Test" {
+		t.Error("Expected Config.UI.Title to be Test")
+	}
+	if len(config.Services) != 3 {
 		t.Error("Should have returned two services")
 	}
+
 	if config.Services[0].URL != "https://twinnation.org/health" {
 		t.Errorf("URL should have been %s", "https://twinnation.org/health")
 	}
-	if config.Services[1].URL != "https://api.github.com/healthz" {
-		t.Errorf("URL should have been %s", "https://api.github.com/healthz")
-	}
 	if config.Services[0].Method != "GET" {
 		t.Errorf("Method should have been %s (default)", "GET")
 	}
-	if config.Services[1].Method != "GET" {
-		t.Errorf("Method should have been %s (default)", "GET")
-	}
 	if config.Services[0].Interval != 15*time.Second {
 		t.Errorf("Interval should have been %s", 15*time.Second)
 	}
-	if config.Services[1].Interval != 60*time.Second {
-		t.Errorf("Interval should have been %s, because it is the default value", 60*time.Second)
+	if config.Services[0].ClientConfig.Insecure != client.GetDefaultConfig().Insecure {
+		t.Errorf("ClientConfig.Insecure should have been %v, got %v", true, config.Services[0].ClientConfig.Insecure)
+	}
+	if config.Services[0].ClientConfig.IgnoreRedirect != client.GetDefaultConfig().IgnoreRedirect {
+		t.Errorf("ClientConfig.IgnoreRedirect should have been %v, got %v", true, config.Services[0].ClientConfig.IgnoreRedirect)
+	}
+	if config.Services[0].ClientConfig.Timeout != client.GetDefaultConfig().Timeout {
+		t.Errorf("ClientConfig.Timeout should have been %v, got %v", client.GetDefaultConfig().Timeout, config.Services[0].ClientConfig.Timeout)
 	}
 	if len(config.Services[0].Conditions) != 1 {
 		t.Errorf("There should have been %d conditions", 1)
 	}
+
+	if config.Services[1].URL != "https://api.github.com/healthz" {
+		t.Errorf("URL should have been %s", "https://api.github.com/healthz")
+	}
+	if config.Services[1].Method != "GET" {
+		t.Errorf("Method should have been %s (default)", "GET")
+	}
+	if config.Services[1].Interval != 60*time.Second {
+		t.Errorf("Interval should have been %s, because it is the default value", 60*time.Second)
+	}
+	if !config.Services[1].ClientConfig.Insecure {
+		t.Errorf("ClientConfig.Insecure should have been %v, got %v", true, config.Services[1].ClientConfig.Insecure)
+	}
+	if !config.Services[1].ClientConfig.IgnoreRedirect {
+		t.Errorf("ClientConfig.IgnoreRedirect should have been %v, got %v", true, config.Services[1].ClientConfig.IgnoreRedirect)
+	}
+	if config.Services[1].ClientConfig.Timeout != 5*time.Second {
+		t.Errorf("ClientConfig.Timeout should have been %v, got %v", 5*time.Second, config.Services[1].ClientConfig.Timeout)
+	}
 	if len(config.Services[1].Conditions) != 2 {
 		t.Errorf("There should have been %d conditions", 2)
 	}
+
+	if config.Services[2].URL != "https://example.com/" {
+		t.Errorf("URL should have been %s", "https://example.com/")
+	}
+	if config.Services[2].Method != "GET" {
+		t.Errorf("Method should have been %s (default)", "GET")
+	}
+	if config.Services[2].Interval != 30*time.Minute {
+		t.Errorf("Interval should have been %s, because it is the default value", 30*time.Minute)
+	}
+	if !config.Services[2].ClientConfig.Insecure {
+		t.Errorf("ClientConfig.Insecure should have been %v, got %v", true, config.Services[2].ClientConfig.Insecure)
+	}
+	if config.Services[2].ClientConfig.IgnoreRedirect {
+		t.Errorf("ClientConfig.IgnoreRedirect should have been %v by default, got %v", false, config.Services[2].ClientConfig.IgnoreRedirect)
+	}
+	if config.Services[2].ClientConfig.Timeout != 10*time.Second {
+		t.Errorf("ClientConfig.Timeout should have been %v by default, got %v", 10*time.Second, config.Services[2].ClientConfig.Timeout)
+	}
+	if len(config.Services[2].Conditions) != 1 {
+		t.Errorf("There should have been %d conditions", 1)
+	}
 }
 
 func TestParseAndValidateConfigBytesDefault(t *testing.T) {
@@ -104,17 +167,26 @@ services:
 	if config.Metrics {
 		t.Error("Metrics should've been false by default")
 	}
+	if config.Web.Address != DefaultAddress {
+		t.Errorf("Bind address should have been %s, because it is the default value", DefaultAddress)
+	}
+	if config.Web.Port != DefaultPort {
+		t.Errorf("Port should have been %d, because it is the default value", DefaultPort)
+	}
 	if config.Services[0].URL != "https://twinnation.org/health" {
 		t.Errorf("URL should have been %s", "https://twinnation.org/health")
 	}
 	if config.Services[0].Interval != 60*time.Second {
 		t.Errorf("Interval should have been %s, because it is the default value", 60*time.Second)
 	}
-	if config.Web.Address != DefaultAddress {
-		t.Errorf("Bind address should have been %s, because it is the default value", DefaultAddress)
+	if config.Services[0].ClientConfig.Insecure != client.GetDefaultConfig().Insecure {
+		t.Errorf("ClientConfig.Insecure should have been %v by default, got %v", true, config.Services[0].ClientConfig.Insecure)
 	}
-	if config.Web.Port != DefaultPort {
-		t.Errorf("Port should have been %d, because it is the default value", DefaultPort)
+	if config.Services[0].ClientConfig.IgnoreRedirect != client.GetDefaultConfig().IgnoreRedirect {
+		t.Errorf("ClientConfig.IgnoreRedirect should have been %v by default, got %v", true, config.Services[0].ClientConfig.IgnoreRedirect)
+	}
+	if config.Services[0].ClientConfig.Timeout != client.GetDefaultConfig().Timeout {
+		t.Errorf("ClientConfig.Timeout should have been %v by default, got %v", client.GetDefaultConfig().Timeout, config.Services[0].ClientConfig.Timeout)
 	}
 }
 
@@ -143,11 +215,9 @@ services:
 	if config.Services[0].Interval != 60*time.Second {
 		t.Errorf("Interval should have been %s, because it is the default value", 60*time.Second)
 	}
-
 	if config.Web.Address != "127.0.0.1" {
 		t.Errorf("Bind address should have been %s, because it is specified in config", "127.0.0.1")
 	}
-
 	if config.Web.Port != DefaultPort {
 		t.Errorf("Port should have been %d, because it is the default value", DefaultPort)
 	}
@@ -339,6 +409,8 @@ alerting:
     integration-key: "00000000000000000000000000000000"
   mattermost:
     webhook-url: "http://example.com"
+    client:
+      insecure: true
   messagebird:
     access-key: "1"
     originator: "31619191918"
@@ -351,6 +423,8 @@ alerting:
     token: "5678"
     from: "+1-234-567-8901"
     to: "+1-234-567-8901"
+  teams:
+    webhook-url: "http://example.com"
 
 services:
   - name: twinnation
@@ -375,6 +449,8 @@ services:
         enabled: true
         failure-threshold: 12
         success-threshold: 15
+      - type: teams
+        enabled: true
     conditions:
       - "[STATUS] == 200"
 `))
@@ -401,8 +477,8 @@ services:
 	if config.Services[0].Interval != 60*time.Second {
 		t.Errorf("Interval should have been %s, because it is the default value", 60*time.Second)
 	}
-	if len(config.Services[0].Alerts) != 7 {
-		t.Fatal("There should've been 7 alerts configured")
+	if len(config.Services[0].Alerts) != 8 {
+		t.Fatal("There should've been 8 alerts configured")
 	}
 
 	if config.Services[0].Alerts[0].Type != alert.TypeSlack {
@@ -489,6 +565,19 @@ services:
 	if config.Services[0].Alerts[6].SuccessThreshold != 15 {
 		t.Errorf("The default success threshold of the alert should've been %d, but it was %d", 15, config.Services[0].Alerts[6].SuccessThreshold)
 	}
+
+	if config.Services[0].Alerts[7].Type != alert.TypeTeams {
+		t.Errorf("The type of the alert should've been %s, but it was %s", alert.TypeTeams, config.Services[0].Alerts[7].Type)
+	}
+	if !config.Services[0].Alerts[7].IsEnabled() {
+		t.Error("The alert should've been enabled")
+	}
+	if config.Services[0].Alerts[7].FailureThreshold != 3 {
+		t.Errorf("The default failure threshold of the alert should've been %d, but it was %d", 3, config.Services[0].Alerts[7].FailureThreshold)
+	}
+	if config.Services[0].Alerts[7].SuccessThreshold != 2 {
+		t.Errorf("The default success threshold of the alert should've been %d, but it was %d", 2, config.Services[0].Alerts[7].SuccessThreshold)
+	}
 }
 
 func TestParseAndValidateConfigBytesWithAlertingAndDefaultAlert(t *testing.T) {
@@ -538,6 +627,10 @@ alerting:
       enabled: true
       failure-threshold: 12
       success-threshold: 15
+  teams:
+    webhook-url: "http://example.com"
+    default-alert:
+      enabled: true
 
 services:
  - name: twinnation
@@ -551,6 +644,7 @@ services:
        success-threshold: 2 # test service alert override
      - type: telegram
      - type: twilio
+     - type: teams
    conditions:
      - "[STATUS] == 200"
 `))
@@ -642,6 +736,14 @@ services:
 	if config.Alerting.Twilio.GetDefaultAlert() == nil {
 		t.Fatal("Twilio.GetDefaultAlert() shouldn't have returned nil")
 	}
+
+	if config.Alerting.Teams == nil || !config.Alerting.Teams.IsValid() {
+		t.Fatal("Teams alerting config should've been valid")
+	}
+	if config.Alerting.Teams.GetDefaultAlert() == nil {
+		t.Fatal("Teams.GetDefaultAlert() shouldn't have returned nil")
+	}
+
 	// Services
 	if len(config.Services) != 1 {
 		t.Error("There should've been 1 service")
@@ -652,8 +754,8 @@ services:
 	if config.Services[0].Interval != 60*time.Second {
 		t.Errorf("Interval should have been %s, because it is the default value", 60*time.Second)
 	}
-	if len(config.Services[0].Alerts) != 7 {
-		t.Fatal("There should've been 7 alerts configured")
+	if len(config.Services[0].Alerts) != 8 {
+		t.Fatal("There should've been 8 alerts configured")
 	}
 
 	if config.Services[0].Alerts[0].Type != alert.TypeSlack {
@@ -743,6 +845,20 @@ services:
 	if config.Services[0].Alerts[6].SuccessThreshold != 15 {
 		t.Errorf("The default success threshold of the alert should've been %d, but it was %d", 15, config.Services[0].Alerts[6].SuccessThreshold)
 	}
+
+	if config.Services[0].Alerts[7].Type != alert.TypeTeams {
+		t.Errorf("The type of the alert should've been %s, but it was %s", alert.TypeTeams, config.Services[0].Alerts[7].Type)
+	}
+	if !config.Services[0].Alerts[7].IsEnabled() {
+		t.Error("The alert should've been enabled")
+	}
+	if config.Services[0].Alerts[7].FailureThreshold != 3 {
+		t.Errorf("The default failure threshold of the alert should've been %d, but it was %d", 3, config.Services[0].Alerts[7].FailureThreshold)
+	}
+	if config.Services[0].Alerts[7].SuccessThreshold != 2 {
+		t.Errorf("The default success threshold of the alert should've been %d, but it was %d", 2, config.Services[0].Alerts[7].SuccessThreshold)
+	}
+
 }
 
 func TestParseAndValidateConfigBytesWithAlertingAndDefaultAlertAndMultipleAlertsOfSameTypeWithOverriddenParameters(t *testing.T) {
@@ -892,8 +1008,8 @@ services:
 	if config.Alerting.Custom.GetAlertStatePlaceholderValue(false) != "TRIGGERED" {
 		t.Fatal("ALERT_TRIGGERED_OR_RESOLVED placeholder value for TRIGGERED should've been 'TRIGGERED', got", config.Alerting.Custom.GetAlertStatePlaceholderValue(false))
 	}
-	if config.Alerting.Custom.Insecure {
-		t.Fatal("config.Alerting.Custom.Insecure shouldn't have been true")
+	if config.Alerting.Custom.ClientConfig.Insecure {
+		t.Errorf("ClientConfig.Insecure should have been %v, got %v", false, config.Alerting.Custom.ClientConfig.Insecure)
 	}
 }
 
@@ -937,9 +1053,6 @@ services:
 	if config.Alerting.Custom.GetAlertStatePlaceholderValue(false) != "partial_outage" {
 		t.Fatal("ALERT_TRIGGERED_OR_RESOLVED placeholder value for TRIGGERED should've been 'partial_outage'")
 	}
-	if !config.Alerting.Custom.Insecure {
-		t.Fatal("config.Alerting.Custom.Insecure shouldn't have been true")
-	}
 }
 
 func TestParseAndValidateConfigBytesWithCustomAlertingConfigAndOneCustomPlaceholderValue(t *testing.T) {
@@ -950,7 +1063,6 @@ alerting:
       ALERT_TRIGGERED_OR_RESOLVED:
         TRIGGERED: "partial_outage"
     url: "https://example.com"
-    insecure: true
     body: "[ALERT_TRIGGERED_OR_RESOLVED]: [SERVICE_NAME] - [ALERT_DESCRIPTION]"
 services:
   - name: twinnation
@@ -981,50 +1093,48 @@ services:
 	if config.Alerting.Custom.GetAlertStatePlaceholderValue(false) != "partial_outage" {
 		t.Fatal("ALERT_TRIGGERED_OR_RESOLVED placeholder value for TRIGGERED should've been 'partial_outage'")
 	}
-	if !config.Alerting.Custom.Insecure {
-		t.Fatal("config.Alerting.Custom.Insecure shouldn't have been true")
-	}
 }
 
-func TestParseAndValidateConfigBytesWithCustomAlertingConfigThatHasInsecureSetToTrue(t *testing.T) {
-	config, err := parseAndValidateConfigBytes([]byte(`
-alerting:
-  custom:
-    url: "https://example.com"
-    method: "POST"
-    insecure: true
-    body: |
-      {
-        "text": "[ALERT_TRIGGERED_OR_RESOLVED]: [SERVICE_NAME] - [ALERT_DESCRIPTION]"
-      }
+func TestParseAndValidateConfigBytesWithInvalidServiceName(t *testing.T) {
+	_, err := parseAndValidateConfigBytes([]byte(`
 services:
-  - name: twinnation
+  - name: ""
     url: https://twinnation.org/health
-    alerts:
-      - type: custom
     conditions:
       - "[STATUS] == 200"
 `))
-	if err != nil {
-		t.Error("expected no error, got", err.Error())
+	if err != core.ErrServiceWithNoName {
+		t.Error("should've returned an error")
 	}
-	if config == nil {
-		t.Fatal("Config shouldn't have been nil")
+}
+
+func TestParseAndValidateConfigBytesWithInvalidStorageConfig(t *testing.T) {
+	_, err := parseAndValidateConfigBytes([]byte(`
+storage:
+  type: sqlite
+services:
+  - name: example
+    url: https://example.org
+    conditions:
+      - "[STATUS] == 200"
+`))
+	if err == nil {
+		t.Error("should've returned an error, because a file must be specified for a storage of type sqlite")
 	}
-	if config.Alerting == nil {
-		t.Fatal("config.Alerting shouldn't have been nil")
-	}
-	if config.Alerting.Custom == nil {
-		t.Fatal("PagerDuty alerting config shouldn't have been nil")
-	}
-	if !config.Alerting.Custom.IsValid() {
-		t.Error("Custom alerting config should've been valid")
-	}
-	if config.Alerting.Custom.Method != "POST" {
-		t.Error("config.Alerting.Custom.Method should've been POST")
-	}
-	if !config.Alerting.Custom.Insecure {
-		t.Error("config.Alerting.Custom.Insecure shouldn't have been true")
+}
+
+func TestParseAndValidateConfigBytesWithInvalidYAML(t *testing.T) {
+	_, err := parseAndValidateConfigBytes([]byte(`
+storage:
+  invalid yaml
+services:
+  - name: example
+    url: https://example.org
+    conditions:
+      - "[STATUS] == 200"
+`))
+	if err == nil {
+		t.Error("should've returned an error")
 	}
 }
 
@@ -1041,7 +1151,7 @@ services:
       - "[STATUS] == 200"
 `))
 	if err == nil {
-		t.Error("Function should've returned an error")
+		t.Error("should've returned an error")
 	}
 }
 
@@ -1089,113 +1199,6 @@ func TestParseAndValidateConfigBytesWithNoServicesOrAutoDiscovery(t *testing.T)
 	}
 }
 
-func TestParseAndValidateConfigBytesWithKubernetesAutoDiscovery(t *testing.T) {
-	var kubernetesServices []v1.Service
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-1", "default", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-2", "default", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-2-canary", "default", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-3", "kube-system", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-4", "tools", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-5", "tools", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-6", "tools", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-7", "metrics", 8080))
-	kubernetesServices = append(kubernetesServices, k8stest.CreateTestServices("service-7-canary", "metrics", 8080))
-	k8stest.InitializeMockedKubernetesClient(kubernetesServices)
-	config, err := parseAndValidateConfigBytes([]byte(`
-debug: true
-
-kubernetes:
-  cluster-mode: "mock"
-  auto-discover: true
-  excluded-service-suffixes:
-    - canary
-  service-template:
-    interval: 29s
-    conditions:
-      - "[STATUS] == 200"
-  namespaces:
-    - name: default
-      hostname-suffix: ".default.svc.cluster.local"
-      target-path: "/health"
-    - name: tools
-      hostname-suffix: ".tools.svc.cluster.local"
-      target-path: "/health"
-      excluded-services:
-        - service-6
-    - name: metrics
-      hostname-suffix: ".metrics.svc.cluster.local"
-      target-path: "/health"
-`))
-	if err != nil {
-		t.Error("expected no error, got", err.Error())
-	}
-	if config == nil {
-		t.Fatal("Config shouldn't have been nil")
-	}
-	if config.Kubernetes == nil {
-		t.Fatal("Kuberbetes config shouldn't have been nil")
-	}
-	if len(config.Services) != 5 {
-		t.Error("Expected 5 services to have been added through k8s auto discovery, got", len(config.Services))
-	}
-	for _, service := range config.Services {
-		if service.Name == "service-2-canary" || service.Name == "service-7-canary" {
-			t.Errorf("service '%s' should've been excluded because excluded-service-suffixes has 'canary'", service.Name)
-		} else if service.Name == "service-6" {
-			t.Errorf("service '%s' should've been excluded because excluded-services has 'service-6'", service.Name)
-		} else if service.Name == "service-3" {
-			t.Errorf("service '%s' should've been excluded because the namespace 'kube-system' is not configured for auto discovery", service.Name)
-		} else {
-			if service.Interval != 29*time.Second {
-				t.Errorf("service '%s' should've had an interval of 29s, because the template is configured for it", service.Name)
-			}
-			if len(service.Conditions) != 1 {
-				t.Errorf("service '%s' should've had 1 condition", service.Name)
-			}
-			if len(service.Conditions) == 1 && *service.Conditions[0] != "[STATUS] == 200" {
-				t.Errorf("service '%s' should've had the condition '[STATUS] == 200', because the template is configured for it", service.Name)
-			}
-			if !strings.HasSuffix(service.URL, ".svc.cluster.local:8080/health") {
-				t.Errorf("service '%s' should've had an URL with the suffix '.svc.cluster.local:8080/health'", service.Name)
-			}
-		}
-	}
-}
-
-func TestParseAndValidateConfigBytesWithKubernetesAutoDiscoveryButNoServiceTemplate(t *testing.T) {
-	_, err := parseAndValidateConfigBytes([]byte(`
-kubernetes:
-  cluster-mode: "mock"
-  auto-discover: true
-  namespaces:
-    - name: default
-      hostname-suffix: ".default.svc.cluster.local"
-      target-path: "/health"
-`))
-	if err == nil {
-		t.Error("Function should've returned an error because providing a service-template is mandatory")
-	}
-}
-
-func TestParseAndValidateConfigBytesWithKubernetesAutoDiscoveryUsingClusterModeIn(t *testing.T) {
-	_, err := parseAndValidateConfigBytes([]byte(`
-kubernetes:
-  cluster-mode: "in"
-  auto-discover: true
-  service-template:
-    interval: 30s
-    conditions:
-      - "[STATUS] == 200"
-  namespaces:
-    - name: default
-      hostname-suffix: ".default.svc.cluster.local"
-      target-path: "/health"
-`))
-	if err == nil {
-		t.Error("Function should've returned an error because testing with ClusterModeIn isn't supported")
-	}
-}
-
 func TestGetAlertingProviderByAlertType(t *testing.T) {
 	alertingConfig := &alerting.Config{
 		Custom:      &custom.AlertProvider{},
@@ -1206,6 +1209,7 @@ func TestGetAlertingProviderByAlertType(t *testing.T) {
 		Slack:       &slack.AlertProvider{},
 		Telegram:    &telegram.AlertProvider{},
 		Twilio:      &twilio.AlertProvider{},
+		Teams:       &teams.AlertProvider{},
 	}
 	if alertingConfig.GetAlertingProviderByAlertType(alert.TypeCustom) != alertingConfig.Custom {
 		t.Error("expected Custom configuration")
@@ -1231,4 +1235,7 @@ func TestGetAlertingProviderByAlertType(t *testing.T) {
 	if alertingConfig.GetAlertingProviderByAlertType(alert.TypeTwilio) != alertingConfig.Twilio {
 		t.Error("expected Twilio configuration")
 	}
+	if alertingConfig.GetAlertingProviderByAlertType(alert.TypeTeams) != alertingConfig.Teams {
+		t.Error("expected Teams configuration")
+	}
 }

config/ui.go

@@ -0,0 +1,41 @@
+package config
+
+import (
+	"bytes"
+	"html/template"
+)
+
+const (
+	defaultTitle = "Health Dashboard | Gatus"
+	defaultLogo  = ""
+)
+
+// UIConfig is the configuration for the UI of Gatus
+type UIConfig struct {
+	Title string `yaml:"title"` // Title of the page
+	Logo  string `yaml:"logo"`  // Logo to display on the page
+}
+
+// GetDefaultUIConfig returns a UIConfig struct with the default values
+func GetDefaultUIConfig() *UIConfig {
+	return &UIConfig{
+		Title: defaultTitle,
+		Logo:  defaultLogo,
+	}
+}
+
+func (cfg *UIConfig) validateAndSetDefaults() error {
+	if len(cfg.Title) == 0 {
+		cfg.Title = defaultTitle
+	}
+	t, err := template.ParseFiles(StaticFolder + "/index.html")
+	if err != nil {
+		return err
+	}
+	var buffer bytes.Buffer
+	err = t.Execute(&buffer, cfg)
+	if err != nil {
+		return err
+	}
+	return nil
+}

config/ui_test.go

@@ -0,0 +1,24 @@
+package config
+
+import "testing"
+
+func TestUIConfig_validateAndSetDefaults(t *testing.T) {
+	StaticFolder = "../web/static"
+	defer func() {
+		StaticFolder = "./web/static"
+	}()
+	uiConfig := &UIConfig{Title: ""}
+	if err := uiConfig.validateAndSetDefaults(); err != nil {
+		t.Error("expected no error, got", err.Error())
+	}
+}
+
+func TestGetDefaultUIConfig(t *testing.T) {
+	defaultUIConfig := GetDefaultUIConfig()
+	if defaultUIConfig.Title != defaultTitle {
+		t.Error("expected GetDefaultUIConfig() to return defaultTitle, got", defaultUIConfig.Title)
+	}
+	if defaultUIConfig.Logo != defaultLogo {
+		t.Error("expected GetDefaultUIConfig() to return defaultLogo, got", defaultUIConfig.Logo)
+	}
+}

config/web.go

@@ -15,6 +15,11 @@ type WebConfig struct {
 	Port int `yaml:"port"`
 }
 
+// GetDefaultWebConfig returns a WebConfig struct with the default values
+func GetDefaultWebConfig() *WebConfig {
+	return &WebConfig{Address: DefaultAddress, Port: DefaultPort}
+}
+
 // validateAndSetDefaults checks and sets the default values for fields that are not set
 func (web *WebConfig) validateAndSetDefaults() error {
 	// Validate the Address

controller/badge.go

@@ -1,105 +0,0 @@
-package controller
-
-import (
-	"fmt"
-	"net/http"
-	"strings"
-	"time"
-
-	"github.com/TwinProduction/gatus/core"
-	"github.com/TwinProduction/gatus/storage"
-	"github.com/gorilla/mux"
-)
-
-// badgeHandler handles the automatic generation of badge based on the group name and service name passed.
-//
-// Valid values for {duration}: 7d, 24h, 1h
-// Pattern for {identifier}: <KEY>.svg
-func badgeHandler(writer http.ResponseWriter, request *http.Request) {
-	variables := mux.Vars(request)
-	duration := variables["duration"]
-	if duration != "7d" && duration != "24h" && duration != "1h" {
-		writer.WriteHeader(http.StatusBadRequest)
-		_, _ = writer.Write([]byte("Durations supported: 7d, 24h, 1h"))
-		return
-	}
-	identifier := variables["identifier"]
-	key := strings.TrimSuffix(identifier, ".svg")
-	serviceStatus := storage.Get().GetServiceStatusByKey(key)
-	if serviceStatus == nil {
-		writer.WriteHeader(http.StatusNotFound)
-		_, _ = writer.Write([]byte("Requested service not found"))
-		return
-	}
-	if serviceStatus.Uptime == nil {
-		writer.WriteHeader(http.StatusInternalServerError)
-		_, _ = writer.Write([]byte("Failed to compute uptime"))
-		return
-	}
-	formattedDate := time.Now().Format(http.TimeFormat)
-	writer.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
-	writer.Header().Set("Date", formattedDate)
-	writer.Header().Set("Expires", formattedDate)
-	writer.Header().Set("Content-Type", "image/svg+xml")
-	_, _ = writer.Write(generateSVG(duration, serviceStatus.Uptime))
-}
-
-func generateSVG(duration string, uptime *core.Uptime) []byte {
-	var labelWidth, valueWidth, valueWidthAdjustment int
-	var color string
-	var value float64
-	switch duration {
-	case "7d":
-		labelWidth = 65
-		value = uptime.LastSevenDays
-	case "24h":
-		labelWidth = 70
-		value = uptime.LastTwentyFourHours
-	case "1h":
-		labelWidth = 65
-		value = uptime.LastHour
-	default:
-	}
-	if value >= 0.8 {
-		color = "#40cc11"
-	} else {
-		color = "#c7130a"
-	}
-	sanitizedValue := strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.2f", value*100), "0"), ".") + "%"
-	if strings.Contains(sanitizedValue, ".") {
-		valueWidthAdjustment = -10
-	}
-	valueWidth = (len(sanitizedValue) * 11) + valueWidthAdjustment
-	width := labelWidth + valueWidth
-	labelX := labelWidth / 2
-	valueX := labelWidth + (valueWidth / 2)
-	svg := []byte(fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" width="%d" height="20">
-  <linearGradient id="b" x2="0" y2="100%%">
-    <stop offset="0" stop-color="#bbb" stop-opacity=".1"/>
-    <stop offset="1" stop-opacity=".1"/>
-  </linearGradient>
-  <mask id="a">
-    <rect width="%d" height="20" rx="3" fill="#fff"/>
-  </mask>
-  <g mask="url(#a)">
-    <path fill="#555" d="M0 0h%dv20H0z"/>
-    <path fill="%s" d="M%d 0h%dv20H%dz"/>
-    <path fill="url(#b)" d="M0 0h%dv20H0z"/>
-  </g>
-  <g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="11">
-    <text x="%d" y="15" fill="#010101" fill-opacity=".3">
-      uptime %s
-    </text>
-    <text x="%d" y="14">
-      uptime %s
-    </text>
-    <text x="%d" y="15" fill="#010101" fill-opacity=".3">
-      %s
-    </text>
-    <text x="%d" y="14">
-      %s
-    </text>
-  </g>
-</svg>`, width, width, labelWidth, color, labelWidth, valueWidth, labelWidth, width, labelX, duration, labelX, duration, valueX, sanitizedValue, valueX, sanitizedValue))
-	return svg
-}

controller/controller.go

@@ -1,53 +1,29 @@
 package controller
 
 import (
-	"bytes"
-	"compress/gzip"
 	"context"
-	"encoding/json"
 	"fmt"
 	"log"
 	"net/http"
 	"os"
-	"strings"
 	"time"
 
 	"github.com/TwinProduction/gatus/config"
+	"github.com/TwinProduction/gatus/controller/handler"
 	"github.com/TwinProduction/gatus/security"
-	"github.com/TwinProduction/gatus/storage"
-	"github.com/TwinProduction/gocache"
-	"github.com/TwinProduction/health"
-	"github.com/gorilla/mux"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
-)
-
-const (
-	cacheTTL = 10 * time.Second
 )
 
 var (
-	cache = gocache.NewCache().WithMaxSize(100).WithEvictionPolicy(gocache.FirstInFirstOut)
-
-	// staticFolder is the path to the location of the static folder from the root path of the project
-	// The only reason this is exposed is to allow running tests from a different path than the root path of the project
-	staticFolder = "./web/static"
-
 	// server is the http.Server created by Handle.
 	// The only reason it exists is for testing purposes.
 	server *http.Server
 )
 
-func init() {
-	if err := cache.StartJanitor(); err != nil {
-		log.Fatal("[controller][init] Failed to start cache janitor:", err.Error())
-	}
-}
-
 // Handle creates the router and starts the server
-func Handle(securityConfig *security.Config, webConfig *config.WebConfig, enableMetrics bool) {
-	var router http.Handler = CreateRouter(securityConfig, enableMetrics)
+func Handle(securityConfig *security.Config, webConfig *config.WebConfig, uiConfig *config.UIConfig, enableMetrics bool) {
+	var router http.Handler = handler.CreateRouter(config.StaticFolder, securityConfig, uiConfig, enableMetrics)
 	if os.Getenv("ENVIRONMENT") == "dev" {
-		router = developmentCorsHandler(router)
+		router = handler.DevelopmentCORS(router)
 	}
 	server = &http.Server{
 		Addr:         fmt.Sprintf("%s:%d", webConfig.Address, webConfig.Port),
@@ -70,101 +46,3 @@ func Shutdown() {
 		server = nil
 	}
 }
-
-// CreateRouter creates the router for the http server
-func CreateRouter(securityConfig *security.Config, enabledMetrics bool) *mux.Router {
-	router := mux.NewRouter()
-	if enabledMetrics {
-		router.Handle("/metrics", promhttp.Handler()).Methods("GET")
-	}
-	router.Handle("/health", health.Handler().WithJSON(true)).Methods("GET")
-	router.HandleFunc("/favicon.ico", favIconHandler).Methods("GET")
-	router.HandleFunc("/api/v1/statuses", secureIfNecessary(securityConfig, serviceStatusesHandler)).Methods("GET") // No GzipHandler for this one, because we cache the content
-	router.HandleFunc("/api/v1/statuses/{key}", secureIfNecessary(securityConfig, GzipHandlerFunc(serviceStatusHandler))).Methods("GET")
-	router.HandleFunc("/api/v1/badges/uptime/{duration}/{identifier}", badgeHandler).Methods("GET")
-	// SPA
-	router.HandleFunc("/services/{service}", spaHandler).Methods("GET")
-	// Everything else falls back on static content
-	router.PathPrefix("/").Handler(GzipHandler(http.FileServer(http.Dir(staticFolder))))
-	return router
-}
-
-func secureIfNecessary(securityConfig *security.Config, handler http.HandlerFunc) http.HandlerFunc {
-	if securityConfig != nil && securityConfig.IsValid() {
-		return security.Handler(handler, securityConfig)
-	}
-	return handler
-}
-
-// serviceStatusesHandler handles requests to retrieve all service statuses
-// Due to the size of the response, this function leverages a cache.
-// Must not be wrapped by GzipHandler
-func serviceStatusesHandler(writer http.ResponseWriter, r *http.Request) {
-	page, pageSize := extractPageAndPageSizeFromRequest(r)
-	gzipped := strings.Contains(r.Header.Get("Accept-Encoding"), "gzip")
-	var exists bool
-	var value interface{}
-	if gzipped {
-		writer.Header().Set("Content-Encoding", "gzip")
-		value, exists = cache.Get(fmt.Sprintf("service-status-%d-%d-gzipped", page, pageSize))
-	} else {
-		value, exists = cache.Get(fmt.Sprintf("service-status-%d-%d", page, pageSize))
-	}
-	var data []byte
-	if !exists {
-		var err error
-		buffer := &bytes.Buffer{}
-		gzipWriter := gzip.NewWriter(buffer)
-		data, err = json.Marshal(storage.Get().GetAllServiceStatusesWithResultPagination(page, pageSize))
-		if err != nil {
-			log.Printf("[controller][serviceStatusesHandler] Unable to marshal object to JSON: %s", err.Error())
-			writer.WriteHeader(http.StatusInternalServerError)
-			_, _ = writer.Write([]byte("Unable to marshal object to JSON"))
-			return
-		}
-		_, _ = gzipWriter.Write(data)
-		_ = gzipWriter.Close()
-		gzippedData := buffer.Bytes()
-		cache.SetWithTTL(fmt.Sprintf("service-status-%d-%d", page, pageSize), data, cacheTTL)
-		cache.SetWithTTL(fmt.Sprintf("service-status-%d-%d-gzipped", page, pageSize), gzippedData, cacheTTL)
-		if gzipped {
-			data = gzippedData
-		}
-	} else {
-		data = value.([]byte)
-	}
-	writer.Header().Add("Content-Type", "application/json")
-	writer.WriteHeader(http.StatusOK)
-	_, _ = writer.Write(data)
-}
-
-// serviceStatusHandler retrieves a single ServiceStatus by group name and service name
-func serviceStatusHandler(writer http.ResponseWriter, r *http.Request) {
-	page, pageSize := extractPageAndPageSizeFromRequest(r)
-	vars := mux.Vars(r)
-	serviceStatus := storage.Get().GetServiceStatusByKey(vars["key"])
-	if serviceStatus == nil {
-		log.Printf("[controller][serviceStatusHandler] Service with key=%s not found", vars["key"])
-		writer.WriteHeader(http.StatusNotFound)
-		_, _ = writer.Write([]byte("not found"))
-		return
-	}
-	data := map[string]interface{}{
-		"serviceStatus": serviceStatus.WithResultPagination(page, pageSize),
-		// The following fields, while present on core.ServiceStatus, are annotated to remain hidden so that we can
-		// expose only the necessary data on /api/v1/statuses.
-		// Since the /api/v1/statuses/{key} endpoint does need this data, however, we explicitly expose it here
-		"events": serviceStatus.Events,
-		"uptime": serviceStatus.Uptime,
-	}
-	output, err := json.Marshal(data)
-	if err != nil {
-		log.Printf("[controller][serviceStatusHandler] Unable to marshal object to JSON: %s", err.Error())
-		writer.WriteHeader(http.StatusInternalServerError)
-		_, _ = writer.Write([]byte("unable to marshal object to JSON"))
-		return
-	}
-	writer.Header().Add("Content-Type", "application/json")
-	writer.WriteHeader(http.StatusOK)
-	_, _ = writer.Write(output)
-}

controller/controller_test.go

@@ -6,219 +6,12 @@ import (
 	"net/http/httptest"
 	"os"
 	"testing"
-	"time"
 
 	"github.com/TwinProduction/gatus/config"
 	"github.com/TwinProduction/gatus/core"
-	"github.com/TwinProduction/gatus/storage"
-	"github.com/TwinProduction/gatus/watchdog"
 )
 
-var (
-	firstCondition  = core.Condition("[STATUS] == 200")
-	secondCondition = core.Condition("[RESPONSE_TIME] < 500")
-	thirdCondition  = core.Condition("[CERTIFICATE_EXPIRATION] < 72h")
-
-	timestamp = time.Now()
-
-	testService = core.Service{
-		Name:                    "name",
-		Group:                   "group",
-		URL:                     "https://example.org/what/ever",
-		Method:                  "GET",
-		Body:                    "body",
-		Interval:                30 * time.Second,
-		Conditions:              []*core.Condition{&firstCondition, &secondCondition, &thirdCondition},
-		Alerts:                  nil,
-		Insecure:                false,
-		NumberOfFailuresInARow:  0,
-		NumberOfSuccessesInARow: 0,
-	}
-	testSuccessfulResult = core.Result{
-		Hostname:              "example.org",
-		IP:                    "127.0.0.1",
-		HTTPStatus:            200,
-		Errors:                nil,
-		Connected:             true,
-		Success:               true,
-		Timestamp:             timestamp,
-		Duration:              150 * time.Millisecond,
-		CertificateExpiration: 10 * time.Hour,
-		ConditionResults: []*core.ConditionResult{
-			{
-				Condition: "[STATUS] == 200",
-				Success:   true,
-			},
-			{
-				Condition: "[RESPONSE_TIME] < 500",
-				Success:   true,
-			},
-			{
-				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
-				Success:   true,
-			},
-		},
-	}
-	testUnsuccessfulResult = core.Result{
-		Hostname:              "example.org",
-		IP:                    "127.0.0.1",
-		HTTPStatus:            200,
-		Errors:                []string{"error-1", "error-2"},
-		Connected:             true,
-		Success:               false,
-		Timestamp:             timestamp,
-		Duration:              750 * time.Millisecond,
-		CertificateExpiration: 10 * time.Hour,
-		ConditionResults: []*core.ConditionResult{
-			{
-				Condition: "[STATUS] == 200",
-				Success:   true,
-			},
-			{
-				Condition: "[RESPONSE_TIME] < 500",
-				Success:   false,
-			},
-			{
-				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
-				Success:   false,
-			},
-		},
-	}
-)
-
-func TestCreateRouter(t *testing.T) {
-	defer storage.Get().Clear()
-	defer cache.Clear()
-	staticFolder = "../web/static"
-	cfg := &config.Config{
-		Metrics: true,
-		Services: []*core.Service{
-			{
-				Name:  "frontend",
-				Group: "core",
-			},
-			{
-				Name:  "backend",
-				Group: "core",
-			},
-		},
-	}
-	watchdog.UpdateServiceStatuses(cfg.Services[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
-	watchdog.UpdateServiceStatuses(cfg.Services[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
-	router := CreateRouter(cfg.Security, cfg.Metrics)
-	type Scenario struct {
-		Name         string
-		Path         string
-		ExpectedCode int
-		Gzip         bool
-	}
-	scenarios := []Scenario{
-		{
-			Name:         "health",
-			Path:         "/health",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "metrics",
-			Path:         "/metrics",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "badges-1h",
-			Path:         "/api/v1/badges/uptime/1h/core_frontend.svg",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "badges-24h",
-			Path:         "/api/v1/badges/uptime/24h/core_backend.svg",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "badges-7d",
-			Path:         "/api/v1/badges/uptime/7d/core_frontend.svg",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "badges-with-invalid-duration",
-			Path:         "/api/v1/badges/uptime/3d/core_backend.svg",
-			ExpectedCode: http.StatusBadRequest,
-		},
-		{
-			Name:         "badges-for-invalid-key",
-			Path:         "/api/v1/badges/uptime/7d/invalid_key.svg",
-			ExpectedCode: http.StatusNotFound,
-		},
-		{
-			Name:         "service-statuses",
-			Path:         "/api/v1/statuses",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "service-statuses-gzip",
-			Path:         "/api/v1/statuses",
-			ExpectedCode: http.StatusOK,
-			Gzip:         true,
-		},
-		{
-			Name:         "service-statuses-pagination",
-			Path:         "/api/v1/statuses?page=1&pageSize=20",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "service-status",
-			Path:         "/api/v1/statuses/core_frontend",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "service-status-gzip",
-			Path:         "/api/v1/statuses/core_frontend",
-			ExpectedCode: http.StatusOK,
-			Gzip:         true,
-		},
-		{
-			Name:         "service-status-for-invalid-key",
-			Path:         "/api/v1/statuses/invalid_key",
-			ExpectedCode: http.StatusNotFound,
-		},
-		{
-			Name:         "favicon",
-			Path:         "/favicon.ico",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "frontend-home",
-			Path:         "/",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "frontend-assets",
-			Path:         "/js/app.js",
-			ExpectedCode: http.StatusOK,
-		},
-		{
-			Name:         "frontend-service",
-			Path:         "/services/core_frontend",
-			ExpectedCode: http.StatusOK,
-		},
-	}
-	for _, scenario := range scenarios {
-		t.Run(scenario.Name, func(t *testing.T) {
-			request, _ := http.NewRequest("GET", scenario.Path, nil)
-			if scenario.Gzip {
-				request.Header.Set("Accept-Encoding", "gzip")
-			}
-			responseRecorder := httptest.NewRecorder()
-			router.ServeHTTP(responseRecorder, request)
-			if responseRecorder.Code != scenario.ExpectedCode {
-				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
-			}
-		})
-	}
-}
-
 func TestHandle(t *testing.T) {
-	defer storage.Get().Clear()
-	defer cache.Clear()
 	cfg := &config.Config{
 		Web: &config.WebConfig{
 			Address: "0.0.0.0",
@@ -238,7 +31,7 @@ func TestHandle(t *testing.T) {
 	_ = os.Setenv("ROUTER_TEST", "true")
 	_ = os.Setenv("ENVIRONMENT", "dev")
 	defer os.Clearenv()
-	Handle(cfg.Security, cfg.Web, cfg.Metrics)
+	Handle(cfg.Security, cfg.Web, cfg.UI, cfg.Metrics)
 	defer Shutdown()
 	request, _ := http.NewRequest("GET", "/health", nil)
 	responseRecorder := httptest.NewRecorder()
@@ -259,71 +52,3 @@ func TestShutdown(t *testing.T) {
 		t.Error("server should've been shut down")
 	}
 }
-
-func TestServiceStatusesHandler(t *testing.T) {
-	defer storage.Get().Clear()
-	defer cache.Clear()
-	staticFolder = "../web/static"
-	firstResult := &testSuccessfulResult
-	secondResult := &testUnsuccessfulResult
-	storage.Get().Insert(&testService, firstResult)
-	storage.Get().Insert(&testService, secondResult)
-	// Can't be bothered dealing with timezone issues on the worker that runs the automated tests
-	firstResult.Timestamp = time.Time{}
-	secondResult.Timestamp = time.Time{}
-	router := CreateRouter(nil, false)
-
-	type Scenario struct {
-		Name         string
-		Path         string
-		ExpectedCode int
-		ExpectedBody string
-	}
-	scenarios := []Scenario{
-		{
-			Name:         "no-pagination",
-			Path:         "/api/v1/statuses",
-			ExpectedCode: http.StatusOK,
-			ExpectedBody: `{"group_name":{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":150000000,"errors":null,"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":true},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":true}],"success":true,"timestamp":"0001-01-01T00:00:00Z"},{"status":200,"hostname":"example.org","duration":750000000,"errors":["error-1","error-2"],"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":false},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":false}],"success":false,"timestamp":"0001-01-01T00:00:00Z"}]}}`,
-		},
-		{
-			Name:         "pagination-first-result",
-			Path:         "/api/v1/statuses?page=1&pageSize=1",
-			ExpectedCode: http.StatusOK,
-			ExpectedBody: `{"group_name":{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":750000000,"errors":["error-1","error-2"],"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":false},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":false}],"success":false,"timestamp":"0001-01-01T00:00:00Z"}]}}`,
-		},
-		{
-			Name:         "pagination-second-result",
-			Path:         "/api/v1/statuses?page=2&pageSize=1",
-			ExpectedCode: http.StatusOK,
-			ExpectedBody: `{"group_name":{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":150000000,"errors":null,"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":true},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":true}],"success":true,"timestamp":"0001-01-01T00:00:00Z"}]}}`,
-		},
-		{
-			Name:         "pagination-no-results",
-			Path:         "/api/v1/statuses?page=5&pageSize=20",
-			ExpectedCode: http.StatusOK,
-			ExpectedBody: `{"group_name":{"name":"name","group":"group","key":"group_name","results":[]}}`,
-		},
-		{
-			Name:         "invalid-pagination-should-fall-back-to-default",
-			Path:         "/api/v1/statuses?page=INVALID&pageSize=INVALID",
-			ExpectedCode: http.StatusOK,
-			ExpectedBody: `{"group_name":{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":150000000,"errors":null,"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":true},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":true}],"success":true,"timestamp":"0001-01-01T00:00:00Z"},{"status":200,"hostname":"example.org","duration":750000000,"errors":["error-1","error-2"],"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":false},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":false}],"success":false,"timestamp":"0001-01-01T00:00:00Z"}]}}`,
-		},
-	}
-
-	for _, scenario := range scenarios {
-		t.Run(scenario.Name, func(t *testing.T) {
-			request, _ := http.NewRequest("GET", scenario.Path, nil)
-			responseRecorder := httptest.NewRecorder()
-			router.ServeHTTP(responseRecorder, request)
-			if responseRecorder.Code != scenario.ExpectedCode {
-				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
-			}
-			output := responseRecorder.Body.String()
-			if output != scenario.ExpectedBody {
-				t.Errorf("expected:\n %s\n\ngot:\n %s", scenario.ExpectedBody, output)
-			}
-		})
-	}
-}

controller/cors.go

@@ -1,10 +0,0 @@
-package controller
-
-import "net/http"
-
-func developmentCorsHandler(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Access-Control-Allow-Origin", "http://localhost:8081")
-		next.ServeHTTP(w, r)
-	})
-}

controller/favicon.go

@@ -1,8 +0,0 @@
-package controller
-
-import "net/http"
-
-// favIconHandler handles requests for /favicon.ico
-func favIconHandler(writer http.ResponseWriter, request *http.Request) {
-	http.ServeFile(writer, request, staticFolder+"/favicon.ico")
-}

controller/handler/badge.go

@@ -0,0 +1,229 @@
+package handler
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/storage/store/common"
+	"github.com/gorilla/mux"
+)
+
+const (
+	badgeColorHexAwesome  = "#40cc11"
+	badgeColorHexGreat    = "#94cc11"
+	badgeColorHexGood     = "#ccd311"
+	badgeColorHexPassable = "#ccb311"
+	badgeColorHexBad      = "#cc8111"
+	badgeColorHexVeryBad  = "#c7130a"
+)
+
+// UptimeBadge handles the automatic generation of badge based on the group name and service name passed.
+//
+// Valid values for {duration}: 7d, 24h, 1h
+func UptimeBadge(writer http.ResponseWriter, request *http.Request) {
+	variables := mux.Vars(request)
+	duration := variables["duration"]
+	var from time.Time
+	switch duration {
+	case "7d":
+		from = time.Now().Add(-7 * 24 * time.Hour)
+	case "24h":
+		from = time.Now().Add(-24 * time.Hour)
+	case "1h":
+		from = time.Now().Add(-2 * time.Hour) // Because uptime metrics are stored by hour, we have to cheat a little
+	default:
+		http.Error(writer, "Durations supported: 7d, 24h, 1h", http.StatusBadRequest)
+		return
+	}
+	key := variables["key"]
+	uptime, err := storage.Get().GetUptimeByKey(key, from, time.Now())
+	if err != nil {
+		if err == common.ErrServiceNotFound {
+			writer.WriteHeader(http.StatusNotFound)
+		} else if err == common.ErrInvalidTimeRange {
+			writer.WriteHeader(http.StatusBadRequest)
+		} else {
+			writer.WriteHeader(http.StatusInternalServerError)
+		}
+		_, _ = writer.Write([]byte(err.Error()))
+		return
+	}
+	formattedDate := time.Now().Format(http.TimeFormat)
+	writer.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	writer.Header().Set("Date", formattedDate)
+	writer.Header().Set("Expires", formattedDate)
+	writer.Header().Set("Content-Type", "image/svg+xml")
+	_, _ = writer.Write(generateUptimeBadgeSVG(duration, uptime))
+}
+
+// ResponseTimeBadge handles the automatic generation of badge based on the group name and service name passed.
+//
+// Valid values for {duration}: 7d, 24h, 1h
+func ResponseTimeBadge(writer http.ResponseWriter, request *http.Request) {
+	variables := mux.Vars(request)
+	duration := variables["duration"]
+	var from time.Time
+	switch duration {
+	case "7d":
+		from = time.Now().Add(-7 * 24 * time.Hour)
+	case "24h":
+		from = time.Now().Add(-24 * time.Hour)
+	case "1h":
+		from = time.Now().Add(-2 * time.Hour) // Because response time metrics are stored by hour, we have to cheat a little
+	default:
+		http.Error(writer, "Durations supported: 7d, 24h, 1h", http.StatusBadRequest)
+		return
+	}
+	key := variables["key"]
+	averageResponseTime, err := storage.Get().GetAverageResponseTimeByKey(key, from, time.Now())
+	if err != nil {
+		if err == common.ErrServiceNotFound {
+			writer.WriteHeader(http.StatusNotFound)
+		} else if err == common.ErrInvalidTimeRange {
+			writer.WriteHeader(http.StatusBadRequest)
+		} else {
+			writer.WriteHeader(http.StatusInternalServerError)
+		}
+		_, _ = writer.Write([]byte(err.Error()))
+		return
+	}
+	formattedDate := time.Now().Format(http.TimeFormat)
+	writer.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	writer.Header().Set("Date", formattedDate)
+	writer.Header().Set("Expires", formattedDate)
+	writer.Header().Set("Content-Type", "image/svg+xml")
+	_, _ = writer.Write(generateResponseTimeBadgeSVG(duration, averageResponseTime))
+}
+
+func generateUptimeBadgeSVG(duration string, uptime float64) []byte {
+	var labelWidth, valueWidth, valueWidthAdjustment int
+	switch duration {
+	case "7d":
+		labelWidth = 65
+	case "24h":
+		labelWidth = 70
+	case "1h":
+		labelWidth = 65
+	default:
+	}
+	color := getBadgeColorFromUptime(uptime)
+	sanitizedValue := strings.TrimRight(strings.TrimRight(fmt.Sprintf("%.2f", uptime*100), "0"), ".") + "%"
+	if strings.Contains(sanitizedValue, ".") {
+		valueWidthAdjustment = -10
+	}
+	valueWidth = (len(sanitizedValue) * 11) + valueWidthAdjustment
+	width := labelWidth + valueWidth
+	labelX := labelWidth / 2
+	valueX := labelWidth + (valueWidth / 2)
+	svg := []byte(fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" width="%d" height="20">
+  <linearGradient id="b" x2="0" y2="100%%">
+    <stop offset="0" stop-color="#bbb" stop-opacity=".1"/>
+    <stop offset="1" stop-opacity=".1"/>
+  </linearGradient>
+  <mask id="a">
+    <rect width="%d" height="20" rx="3" fill="#fff"/>
+  </mask>
+  <g mask="url(#a)">
+    <path fill="#555" d="M0 0h%dv20H0z"/>
+    <path fill="%s" d="M%d 0h%dv20H%dz"/>
+    <path fill="url(#b)" d="M0 0h%dv20H0z"/>
+  </g>
+  <g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="11">
+    <text x="%d" y="15" fill="#010101" fill-opacity=".3">
+      uptime %s
+    </text>
+    <text x="%d" y="14">
+      uptime %s
+    </text>
+    <text x="%d" y="15" fill="#010101" fill-opacity=".3">
+      %s
+    </text>
+    <text x="%d" y="14">
+      %s
+    </text>
+  </g>
+</svg>`, width, width, labelWidth, color, labelWidth, valueWidth, labelWidth, width, labelX, duration, labelX, duration, valueX, sanitizedValue, valueX, sanitizedValue))
+	return svg
+}
+
+func getBadgeColorFromUptime(uptime float64) string {
+	if uptime >= 0.975 {
+		return badgeColorHexAwesome
+	} else if uptime >= 0.95 {
+		return badgeColorHexGreat
+	} else if uptime >= 0.9 {
+		return badgeColorHexGood
+	} else if uptime >= 0.8 {
+		return badgeColorHexPassable
+	} else if uptime >= 0.65 {
+		return badgeColorHexBad
+	}
+	return badgeColorHexVeryBad
+}
+
+func generateResponseTimeBadgeSVG(duration string, averageResponseTime int) []byte {
+	var labelWidth, valueWidth int
+	switch duration {
+	case "7d":
+		labelWidth = 105
+	case "24h":
+		labelWidth = 110
+	case "1h":
+		labelWidth = 105
+	default:
+	}
+	color := getBadgeColorFromResponseTime(averageResponseTime)
+	sanitizedValue := strconv.Itoa(averageResponseTime) + "ms"
+	valueWidth = len(sanitizedValue) * 11
+	width := labelWidth + valueWidth
+	labelX := labelWidth / 2
+	valueX := labelWidth + (valueWidth / 2)
+	svg := []byte(fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" width="%d" height="20">
+  <linearGradient id="b" x2="0" y2="100%%">
+    <stop offset="0" stop-color="#bbb" stop-opacity=".1"/>
+    <stop offset="1" stop-opacity=".1"/>
+  </linearGradient>
+  <mask id="a">
+    <rect width="%d" height="20" rx="3" fill="#fff"/>
+  </mask>
+  <g mask="url(#a)">
+    <path fill="#555" d="M0 0h%dv20H0z"/>
+    <path fill="%s" d="M%d 0h%dv20H%dz"/>
+    <path fill="url(#b)" d="M0 0h%dv20H0z"/>
+  </g>
+  <g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="11">
+    <text x="%d" y="15" fill="#010101" fill-opacity=".3">
+      response time %s
+    </text>
+    <text x="%d" y="14">
+      response time %s
+    </text>
+    <text x="%d" y="15" fill="#010101" fill-opacity=".3">
+      %s
+    </text>
+    <text x="%d" y="14">
+      %s
+    </text>
+  </g>
+</svg>`, width, width, labelWidth, color, labelWidth, valueWidth, labelWidth, width, labelX, duration, labelX, duration, valueX, sanitizedValue, valueX, sanitizedValue))
+	return svg
+}
+
+func getBadgeColorFromResponseTime(responseTime int) string {
+	if responseTime <= 50 {
+		return badgeColorHexAwesome
+	} else if responseTime <= 200 {
+		return badgeColorHexGreat
+	} else if responseTime <= 300 {
+		return badgeColorHexGood
+	} else if responseTime <= 500 {
+		return badgeColorHexPassable
+	} else if responseTime <= 750 {
+		return badgeColorHexBad
+	}
+	return badgeColorHexVeryBad
+}

controller/handler/badge_test.go

@@ -0,0 +1,221 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/TwinProduction/gatus/config"
+	"github.com/TwinProduction/gatus/core"
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/watchdog"
+)
+
+func TestUptimeBadge(t *testing.T) {
+	defer storage.Get().Clear()
+	defer cache.Clear()
+	cfg := &config.Config{
+		Metrics: true,
+		Services: []*core.Service{
+			{
+				Name:  "frontend",
+				Group: "core",
+			},
+			{
+				Name:  "backend",
+				Group: "core",
+			},
+		},
+	}
+	watchdog.UpdateServiceStatuses(cfg.Services[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateServiceStatuses(cfg.Services[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	router := CreateRouter("../../web/static", cfg.Security, nil, cfg.Metrics)
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+		Gzip         bool
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "badge-uptime-1h",
+			Path:         "/api/v1/services/core_frontend/uptimes/1h/badge.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "badge-uptime-24h",
+			Path:         "/api/v1/services/core_backend/uptimes/24h/badge.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "badge-uptime-7d",
+			Path:         "/api/v1/services/core_frontend/uptimes/7d/badge.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "badge-uptime-with-invalid-duration",
+			Path:         "/api/v1/services/core_backend/uptimes/3d/badge.svg",
+			ExpectedCode: http.StatusBadRequest,
+		},
+		{
+			Name:         "badge-uptime-for-invalid-key",
+			Path:         "/api/v1/services/invalid_key/uptimes/7d/badge.svg",
+			ExpectedCode: http.StatusNotFound,
+		},
+		{
+			Name:         "badge-response-time-1h",
+			Path:         "/api/v1/services/core_frontend/response-times/1h/badge.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "badge-response-time-24h",
+			Path:         "/api/v1/services/core_backend/response-times/24h/badge.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "badge-response-time-7d",
+			Path:         "/api/v1/services/core_frontend/response-times/7d/badge.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "badge-response-time-with-invalid-duration",
+			Path:         "/api/v1/services/core_backend/response-times/3d/badge.svg",
+			ExpectedCode: http.StatusBadRequest,
+		},
+		{
+			Name:         "badge-response-time-for-invalid-key",
+			Path:         "/api/v1/services/invalid_key/response-times/7d/badge.svg",
+			ExpectedCode: http.StatusNotFound,
+		},
+		{
+			Name:         "chart-response-time-24h",
+			Path:         "/api/v1/services/core_backend/response-times/24h/chart.svg",
+			ExpectedCode: http.StatusOK,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			if scenario.Gzip {
+				request.Header.Set("Accept-Encoding", "gzip")
+			}
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+		})
+	}
+}
+
+func TestGetBadgeColorFromUptime(t *testing.T) {
+	scenarios := []struct {
+		Uptime        float64
+		ExpectedColor string
+	}{
+		{
+			Uptime:        1,
+			ExpectedColor: badgeColorHexAwesome,
+		},
+		{
+			Uptime:        0.99,
+			ExpectedColor: badgeColorHexAwesome,
+		},
+		{
+			Uptime:        0.97,
+			ExpectedColor: badgeColorHexGreat,
+		},
+		{
+			Uptime:        0.95,
+			ExpectedColor: badgeColorHexGreat,
+		},
+		{
+			Uptime:        0.93,
+			ExpectedColor: badgeColorHexGood,
+		},
+		{
+			Uptime:        0.9,
+			ExpectedColor: badgeColorHexGood,
+		},
+		{
+			Uptime:        0.85,
+			ExpectedColor: badgeColorHexPassable,
+		},
+		{
+			Uptime:        0.7,
+			ExpectedColor: badgeColorHexBad,
+		},
+		{
+			Uptime:        0.65,
+			ExpectedColor: badgeColorHexBad,
+		},
+		{
+			Uptime:        0.6,
+			ExpectedColor: badgeColorHexVeryBad,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run("uptime-"+strconv.Itoa(int(scenario.Uptime*100)), func(t *testing.T) {
+			if getBadgeColorFromUptime(scenario.Uptime) != scenario.ExpectedColor {
+				t.Errorf("expected %s from %f, got %v", scenario.ExpectedColor, scenario.Uptime, getBadgeColorFromUptime(scenario.Uptime))
+			}
+		})
+	}
+}
+
+func TestGetBadgeColorFromResponseTime(t *testing.T) {
+	scenarios := []struct {
+		ResponseTime  int
+		ExpectedColor string
+	}{
+		{
+			ResponseTime:  10,
+			ExpectedColor: badgeColorHexAwesome,
+		},
+		{
+			ResponseTime:  50,
+			ExpectedColor: badgeColorHexAwesome,
+		},
+		{
+			ResponseTime:  75,
+			ExpectedColor: badgeColorHexGreat,
+		},
+		{
+			ResponseTime:  150,
+			ExpectedColor: badgeColorHexGreat,
+		},
+		{
+			ResponseTime:  201,
+			ExpectedColor: badgeColorHexGood,
+		},
+		{
+			ResponseTime:  300,
+			ExpectedColor: badgeColorHexGood,
+		},
+		{
+			ResponseTime:  301,
+			ExpectedColor: badgeColorHexPassable,
+		},
+		{
+			ResponseTime:  450,
+			ExpectedColor: badgeColorHexPassable,
+		},
+		{
+			ResponseTime:  700,
+			ExpectedColor: badgeColorHexBad,
+		},
+		{
+			ResponseTime:  1500,
+			ExpectedColor: badgeColorHexVeryBad,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run("response-time-"+strconv.Itoa(scenario.ResponseTime), func(t *testing.T) {
+			if getBadgeColorFromResponseTime(scenario.ResponseTime) != scenario.ExpectedColor {
+				t.Errorf("expected %s from %d, got %v", scenario.ExpectedColor, scenario.ResponseTime, getBadgeColorFromResponseTime(scenario.ResponseTime))
+			}
+		})
+	}
+}

controller/handler/chart.go

@@ -0,0 +1,121 @@
+package handler
+
+import (
+	"log"
+	"math"
+	"net/http"
+	"sort"
+	"time"
+
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/storage/store/common"
+	"github.com/gorilla/mux"
+	"github.com/wcharczuk/go-chart/v2"
+	"github.com/wcharczuk/go-chart/v2/drawing"
+)
+
+const timeFormat = "3:04PM"
+
+var (
+	gridStyle = chart.Style{
+		StrokeColor: drawing.Color{R: 119, G: 119, B: 119, A: 40},
+		StrokeWidth: 1.0,
+	}
+	axisStyle = chart.Style{
+		FontColor: drawing.Color{R: 119, G: 119, B: 119, A: 255},
+	}
+	transparentStyle = chart.Style{
+		FillColor: drawing.Color{R: 255, G: 255, B: 255, A: 0},
+	}
+)
+
+func ResponseTimeChart(writer http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	duration := vars["duration"]
+	var from time.Time
+	switch duration {
+	case "7d":
+		from = time.Now().Truncate(time.Hour).Add(-24 * 7 * time.Hour)
+	case "24h":
+		from = time.Now().Truncate(time.Hour).Add(-24 * time.Hour)
+	default:
+		http.Error(writer, "Durations supported: 7d, 24h", http.StatusBadRequest)
+		return
+	}
+	hourlyAverageResponseTime, err := storage.Get().GetHourlyAverageResponseTimeByKey(vars["key"], from, time.Now())
+	if err != nil {
+		if err == common.ErrServiceNotFound {
+			writer.WriteHeader(http.StatusNotFound)
+		} else if err == common.ErrInvalidTimeRange {
+			writer.WriteHeader(http.StatusBadRequest)
+		} else {
+			writer.WriteHeader(http.StatusInternalServerError)
+		}
+		_, _ = writer.Write([]byte(err.Error()))
+		return
+	}
+	if len(hourlyAverageResponseTime) == 0 {
+		writer.WriteHeader(http.StatusNoContent)
+		_, _ = writer.Write(nil)
+		return
+	}
+	series := chart.TimeSeries{
+		Name: "Average response time per hour",
+		Style: chart.Style{
+			StrokeWidth: 1.5,
+			DotWidth:    2.0,
+		},
+	}
+	keys := make([]int, 0, len(hourlyAverageResponseTime))
+	earliestTimestamp := int64(0)
+	for hourlyTimestamp := range hourlyAverageResponseTime {
+		keys = append(keys, int(hourlyTimestamp))
+		if earliestTimestamp == 0 || hourlyTimestamp < earliestTimestamp {
+			earliestTimestamp = hourlyTimestamp
+		}
+	}
+	for earliestTimestamp > from.Unix() {
+		earliestTimestamp -= int64(time.Hour.Seconds())
+		keys = append(keys, int(earliestTimestamp))
+	}
+	sort.Ints(keys)
+	var maxAverageResponseTime float64
+	for _, key := range keys {
+		averageResponseTime := float64(hourlyAverageResponseTime[int64(key)])
+		if maxAverageResponseTime < averageResponseTime {
+			maxAverageResponseTime = averageResponseTime
+		}
+		series.XValues = append(series.XValues, time.Unix(int64(key), 0))
+		series.YValues = append(series.YValues, averageResponseTime)
+	}
+	graph := chart.Chart{
+		Canvas:     transparentStyle,
+		Background: transparentStyle,
+		Width:      1280,
+		Height:     300,
+		XAxis: chart.XAxis{
+			ValueFormatter: chart.TimeValueFormatterWithFormat(timeFormat),
+			GridMajorStyle: gridStyle,
+			GridMinorStyle: gridStyle,
+			Style:          axisStyle,
+			NameStyle:      axisStyle,
+		},
+		YAxis: chart.YAxis{
+			Name:           "Average response time",
+			GridMajorStyle: gridStyle,
+			GridMinorStyle: gridStyle,
+			Style:          axisStyle,
+			NameStyle:      axisStyle,
+			Range: &chart.ContinuousRange{
+				Min: 0,
+				Max: math.Ceil(maxAverageResponseTime * 1.25),
+			},
+		},
+		Series: []chart.Series{series},
+	}
+	writer.Header().Set("Content-Type", "image/svg+xml")
+	if err := graph.Render(chart.SVG, writer); err != nil {
+		log.Println("[handler][ResponseTimeChart] Failed to render response time chart:", err.Error())
+		return
+	}
+}

controller/handler/chart_test.go

@@ -0,0 +1,75 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/TwinProduction/gatus/config"
+	"github.com/TwinProduction/gatus/core"
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/watchdog"
+)
+
+func TestResponseTimeChart(t *testing.T) {
+	defer storage.Get().Clear()
+	defer cache.Clear()
+	cfg := &config.Config{
+		Metrics: true,
+		Services: []*core.Service{
+			{
+				Name:  "frontend",
+				Group: "core",
+			},
+			{
+				Name:  "backend",
+				Group: "core",
+			},
+		},
+	}
+	watchdog.UpdateServiceStatuses(cfg.Services[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateServiceStatuses(cfg.Services[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	router := CreateRouter("../../web/static", cfg.Security, nil, cfg.Metrics)
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+		Gzip         bool
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "chart-response-time-24h",
+			Path:         "/api/v1/services/core_backend/response-times/24h/chart.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "chart-response-time-7d",
+			Path:         "/api/v1/services/core_frontend/response-times/7d/chart.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "chart-response-time-with-invalid-duration",
+			Path:         "/api/v1/services/core_backend/response-times/3d/chart.svg",
+			ExpectedCode: http.StatusBadRequest,
+		},
+		{
+			Name:         "chart-response-time-for-invalid-key",
+			Path:         "/api/v1/services/invalid_key/response-times/7d/chart.svg",
+			ExpectedCode: http.StatusNotFound,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			if scenario.Gzip {
+				request.Header.Set("Accept-Encoding", "gzip")
+			}
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+		})
+	}
+}

controller/handler/cors.go

@@ -0,0 +1,10 @@
+package handler
+
+import "net/http"
+
+func DevelopmentCORS(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Access-Control-Allow-Origin", "http://localhost:8081")
+		next.ServeHTTP(w, r)
+	})
+}

controller/handler/favicon.go

@@ -0,0 +1,12 @@
+package handler
+
+import (
+	"net/http"
+)
+
+// FavIcon handles requests for /favicon.ico
+func FavIcon(staticFolder string) http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		http.ServeFile(writer, request, staticFolder+"/favicon.ico")
+	}
+}

controller/handler/favicon_test.go

@@ -0,0 +1,33 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestFavIcon(t *testing.T) {
+	router := CreateRouter("../../web/static", nil, nil, false)
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "favicon",
+			Path:         "/favicon.ico",
+			ExpectedCode: http.StatusOK,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+		})
+	}
+}

controller/handler/gzip.go

@@ -1,4 +1,4 @@
-package controller
+package handler
 
 import (
 	"compress/gzip"

controller/handler/handler.go

@@ -0,0 +1,41 @@
+package handler
+
+import (
+	"net/http"
+
+	"github.com/TwinProduction/gatus/config"
+	"github.com/TwinProduction/gatus/security"
+	"github.com/TwinProduction/health"
+	"github.com/gorilla/mux"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+func CreateRouter(staticFolder string, securityConfig *security.Config, uiConfig *config.UIConfig, enabledMetrics bool) *mux.Router {
+	router := mux.NewRouter()
+	if enabledMetrics {
+		router.Handle("/metrics", promhttp.Handler()).Methods("GET")
+	}
+	router.Handle("/health", health.Handler().WithJSON(true)).Methods("GET")
+	router.HandleFunc("/favicon.ico", FavIcon(staticFolder)).Methods("GET")
+	// Endpoints
+	router.HandleFunc("/api/v1/services/statuses", secureIfNecessary(securityConfig, ServiceStatuses)).Methods("GET") // No GzipHandler for this one, because we cache the content as Gzipped already
+	router.HandleFunc("/api/v1/services/{key}/statuses", secureIfNecessary(securityConfig, GzipHandlerFunc(ServiceStatus))).Methods("GET")
+	// TODO: router.HandleFunc("/api/v1/services/{key}/uptimes", secureIfNecessary(securityConfig, GzipHandlerFunc(serviceUptimesHandler))).Methods("GET")
+	// TODO: router.HandleFunc("/api/v1/services/{key}/events", secureIfNecessary(securityConfig, GzipHandlerFunc(serviceEventsHandler))).Methods("GET")
+	router.HandleFunc("/api/v1/services/{key}/uptimes/{duration}/badge.svg", UptimeBadge).Methods("GET")
+	router.HandleFunc("/api/v1/services/{key}/response-times/{duration}/badge.svg", ResponseTimeBadge).Methods("GET")
+	router.HandleFunc("/api/v1/services/{key}/response-times/{duration}/chart.svg", ResponseTimeChart).Methods("GET")
+	// SPA
+	router.HandleFunc("/services/{service}", SinglePageApplication(staticFolder, uiConfig)).Methods("GET")
+	router.HandleFunc("/", SinglePageApplication(staticFolder, uiConfig)).Methods("GET")
+	// Everything else falls back on static content
+	router.PathPrefix("/").Handler(GzipHandler(http.FileServer(http.Dir(staticFolder))))
+	return router
+}
+
+func secureIfNecessary(securityConfig *security.Config, handler http.HandlerFunc) http.HandlerFunc {
+	if securityConfig != nil && securityConfig.IsValid() {
+		return security.Handler(handler, securityConfig)
+	}
+	return handler
+}

controller/handler/handler_test.go

@@ -0,0 +1,58 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestCreateRouter(t *testing.T) {
+	router := CreateRouter("../../web/static", nil, nil, true)
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+		Gzip         bool
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "health",
+			Path:         "/health",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "metrics",
+			Path:         "/metrics",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "scripts",
+			Path:         "/js/app.js",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "scripts-gzipped",
+			Path:         "/js/app.js",
+			ExpectedCode: http.StatusOK,
+			Gzip:         true,
+		},
+		{
+			Name:         "index-redirect",
+			Path:         "/index.html",
+			ExpectedCode: http.StatusMovedPermanently,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			if scenario.Gzip {
+				request.Header.Set("Accept-Encoding", "gzip")
+			}
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+		})
+	}
+}

controller/handler/service_status.go

@@ -0,0 +1,103 @@
+package handler
+
+import (
+	"bytes"
+	"compress/gzip"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/storage/store/common"
+	"github.com/TwinProduction/gatus/storage/store/common/paging"
+	"github.com/TwinProduction/gocache"
+	"github.com/gorilla/mux"
+)
+
+const (
+	cacheTTL = 10 * time.Second
+)
+
+var (
+	cache = gocache.NewCache().WithMaxSize(100).WithEvictionPolicy(gocache.FirstInFirstOut)
+)
+
+// ServiceStatuses handles requests to retrieve all service statuses
+// Due to the size of the response, this function leverages a cache.
+// Must not be wrapped by GzipHandler
+func ServiceStatuses(writer http.ResponseWriter, r *http.Request) {
+	page, pageSize := extractPageAndPageSizeFromRequest(r)
+	gzipped := strings.Contains(r.Header.Get("Accept-Encoding"), "gzip")
+	var exists bool
+	var value interface{}
+	if gzipped {
+		writer.Header().Set("Content-Encoding", "gzip")
+		value, exists = cache.Get(fmt.Sprintf("service-status-%d-%d-gzipped", page, pageSize))
+	} else {
+		value, exists = cache.Get(fmt.Sprintf("service-status-%d-%d", page, pageSize))
+	}
+	var data []byte
+	if !exists {
+		var err error
+		buffer := &bytes.Buffer{}
+		gzipWriter := gzip.NewWriter(buffer)
+		serviceStatuses, err := storage.Get().GetAllServiceStatuses(paging.NewServiceStatusParams().WithResults(page, pageSize))
+		if err != nil {
+			log.Printf("[handler][ServiceStatuses] Failed to retrieve service statuses: %s", err.Error())
+			http.Error(writer, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		data, err = json.Marshal(serviceStatuses)
+		if err != nil {
+			log.Printf("[handler][ServiceStatuses] Unable to marshal object to JSON: %s", err.Error())
+			http.Error(writer, "unable to marshal object to JSON", http.StatusInternalServerError)
+			return
+		}
+		_, _ = gzipWriter.Write(data)
+		_ = gzipWriter.Close()
+		gzippedData := buffer.Bytes()
+		cache.SetWithTTL(fmt.Sprintf("service-status-%d-%d", page, pageSize), data, cacheTTL)
+		cache.SetWithTTL(fmt.Sprintf("service-status-%d-%d-gzipped", page, pageSize), gzippedData, cacheTTL)
+		if gzipped {
+			data = gzippedData
+		}
+	} else {
+		data = value.([]byte)
+	}
+	writer.Header().Add("Content-Type", "application/json")
+	writer.WriteHeader(http.StatusOK)
+	_, _ = writer.Write(data)
+}
+
+// ServiceStatus retrieves a single ServiceStatus by group name and service name
+func ServiceStatus(writer http.ResponseWriter, r *http.Request) {
+	page, pageSize := extractPageAndPageSizeFromRequest(r)
+	vars := mux.Vars(r)
+	serviceStatus, err := storage.Get().GetServiceStatusByKey(vars["key"], paging.NewServiceStatusParams().WithResults(page, pageSize).WithEvents(1, common.MaximumNumberOfEvents))
+	if err != nil {
+		if err == common.ErrServiceNotFound {
+			http.Error(writer, err.Error(), http.StatusNotFound)
+			return
+		}
+		log.Printf("[handler][ServiceStatus] Failed to retrieve service status: %s", err.Error())
+		http.Error(writer, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	if serviceStatus == nil {
+		log.Printf("[handler][ServiceStatus] Service with key=%s not found", vars["key"])
+		http.Error(writer, "not found", http.StatusNotFound)
+		return
+	}
+	output, err := json.Marshal(serviceStatus)
+	if err != nil {
+		log.Printf("[handler][ServiceStatus] Unable to marshal object to JSON: %s", err.Error())
+		http.Error(writer, "unable to marshal object to JSON", http.StatusInternalServerError)
+		return
+	}
+	writer.Header().Add("Content-Type", "application/json")
+	writer.WriteHeader(http.StatusOK)
+	_, _ = writer.Write(output)
+}

controller/handler/service_status_test.go

@@ -0,0 +1,215 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/TwinProduction/gatus/config"
+	"github.com/TwinProduction/gatus/core"
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/watchdog"
+)
+
+var (
+	firstCondition  = core.Condition("[STATUS] == 200")
+	secondCondition = core.Condition("[RESPONSE_TIME] < 500")
+	thirdCondition  = core.Condition("[CERTIFICATE_EXPIRATION] < 72h")
+
+	timestamp = time.Now()
+
+	testService = core.Service{
+		Name:                    "name",
+		Group:                   "group",
+		URL:                     "https://example.org/what/ever",
+		Method:                  "GET",
+		Body:                    "body",
+		Interval:                30 * time.Second,
+		Conditions:              []*core.Condition{&firstCondition, &secondCondition, &thirdCondition},
+		Alerts:                  nil,
+		NumberOfFailuresInARow:  0,
+		NumberOfSuccessesInARow: 0,
+	}
+	testSuccessfulResult = core.Result{
+		Hostname:              "example.org",
+		IP:                    "127.0.0.1",
+		HTTPStatus:            200,
+		Errors:                nil,
+		Connected:             true,
+		Success:               true,
+		Timestamp:             timestamp,
+		Duration:              150 * time.Millisecond,
+		CertificateExpiration: 10 * time.Hour,
+		ConditionResults: []*core.ConditionResult{
+			{
+				Condition: "[STATUS] == 200",
+				Success:   true,
+			},
+			{
+				Condition: "[RESPONSE_TIME] < 500",
+				Success:   true,
+			},
+			{
+				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
+				Success:   true,
+			},
+		},
+	}
+	testUnsuccessfulResult = core.Result{
+		Hostname:              "example.org",
+		IP:                    "127.0.0.1",
+		HTTPStatus:            200,
+		Errors:                []string{"error-1", "error-2"},
+		Connected:             true,
+		Success:               false,
+		Timestamp:             timestamp,
+		Duration:              750 * time.Millisecond,
+		CertificateExpiration: 10 * time.Hour,
+		ConditionResults: []*core.ConditionResult{
+			{
+				Condition: "[STATUS] == 200",
+				Success:   true,
+			},
+			{
+				Condition: "[RESPONSE_TIME] < 500",
+				Success:   false,
+			},
+			{
+				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
+				Success:   false,
+			},
+		},
+	}
+)
+
+func TestServiceStatus(t *testing.T) {
+	defer storage.Get().Clear()
+	defer cache.Clear()
+	cfg := &config.Config{
+		Metrics: true,
+		Services: []*core.Service{
+			{
+				Name:  "frontend",
+				Group: "core",
+			},
+			{
+				Name:  "backend",
+				Group: "core",
+			},
+		},
+	}
+	watchdog.UpdateServiceStatuses(cfg.Services[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateServiceStatuses(cfg.Services[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	router := CreateRouter("../../web/static", cfg.Security, nil, cfg.Metrics)
+
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+		Gzip         bool
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "service-status",
+			Path:         "/api/v1/services/core_frontend/statuses",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "service-status-gzip",
+			Path:         "/api/v1/services/core_frontend/statuses",
+			ExpectedCode: http.StatusOK,
+			Gzip:         true,
+		},
+		{
+			Name:         "service-status-pagination",
+			Path:         "/api/v1/services/core_frontend/statuses?page=1&pageSize=20",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "service-status-for-invalid-key",
+			Path:         "/api/v1/services/invalid_key/statuses",
+			ExpectedCode: http.StatusNotFound,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			if scenario.Gzip {
+				request.Header.Set("Accept-Encoding", "gzip")
+			}
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+		})
+	}
+}
+
+func TestServiceStatuses(t *testing.T) {
+	defer storage.Get().Clear()
+	defer cache.Clear()
+	firstResult := &testSuccessfulResult
+	secondResult := &testUnsuccessfulResult
+	storage.Get().Insert(&testService, firstResult)
+	storage.Get().Insert(&testService, secondResult)
+	// Can't be bothered dealing with timezone issues on the worker that runs the automated tests
+	firstResult.Timestamp = time.Time{}
+	secondResult.Timestamp = time.Time{}
+	router := CreateRouter("../../web/static", nil, nil, false)
+
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+		ExpectedBody string
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "no-pagination",
+			Path:         "/api/v1/services/statuses",
+			ExpectedCode: http.StatusOK,
+			ExpectedBody: `[{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":150000000,"errors":null,"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":true},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":true}],"success":true,"timestamp":"0001-01-01T00:00:00Z"},{"status":200,"hostname":"example.org","duration":750000000,"errors":["error-1","error-2"],"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":false},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":false}],"success":false,"timestamp":"0001-01-01T00:00:00Z"}],"events":[]}]`,
+		},
+		{
+			Name:         "pagination-first-result",
+			Path:         "/api/v1/services/statuses?page=1&pageSize=1",
+			ExpectedCode: http.StatusOK,
+			ExpectedBody: `[{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":750000000,"errors":["error-1","error-2"],"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":false},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":false}],"success":false,"timestamp":"0001-01-01T00:00:00Z"}],"events":[]}]`,
+		},
+		{
+			Name:         "pagination-second-result",
+			Path:         "/api/v1/services/statuses?page=2&pageSize=1",
+			ExpectedCode: http.StatusOK,
+			ExpectedBody: `[{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":150000000,"errors":null,"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":true},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":true}],"success":true,"timestamp":"0001-01-01T00:00:00Z"}],"events":[]}]`,
+		},
+		{
+			Name:         "pagination-no-results",
+			Path:         "/api/v1/services/statuses?page=5&pageSize=20",
+			ExpectedCode: http.StatusOK,
+			ExpectedBody: `[{"name":"name","group":"group","key":"group_name","results":[],"events":[]}]`,
+		},
+		{
+			Name:         "invalid-pagination-should-fall-back-to-default",
+			Path:         "/api/v1/services/statuses?page=INVALID&pageSize=INVALID",
+			ExpectedCode: http.StatusOK,
+			ExpectedBody: `[{"name":"name","group":"group","key":"group_name","results":[{"status":200,"hostname":"example.org","duration":150000000,"errors":null,"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":true},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":true}],"success":true,"timestamp":"0001-01-01T00:00:00Z"},{"status":200,"hostname":"example.org","duration":750000000,"errors":["error-1","error-2"],"conditionResults":[{"condition":"[STATUS] == 200","success":true},{"condition":"[RESPONSE_TIME] \u003c 500","success":false},{"condition":"[CERTIFICATE_EXPIRATION] \u003c 72h","success":false}],"success":false,"timestamp":"0001-01-01T00:00:00Z"}],"events":[]}]`,
+		},
+	}
+
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+			output := responseRecorder.Body.String()
+			if output != scenario.ExpectedBody {
+				t.Errorf("expected:\n %s\n\ngot:\n %s", scenario.ExpectedBody, output)
+			}
+		})
+	}
+}

controller/handler/spa.go

@@ -0,0 +1,27 @@
+package handler
+
+import (
+	"html/template"
+	"log"
+	"net/http"
+
+	"github.com/TwinProduction/gatus/config"
+)
+
+func SinglePageApplication(staticFolder string, ui *config.UIConfig) http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		t, err := template.ParseFiles(staticFolder + "/index.html")
+		if err != nil {
+			log.Println("[handler][SinglePageApplication] Failed to parse template:", err.Error())
+			http.ServeFile(writer, request, staticFolder+"/index.html")
+			return
+		}
+		writer.Header().Set("Content-Type", "text/html")
+		err = t.Execute(writer, ui)
+		if err != nil {
+			log.Println("[handler][SinglePageApplication] Failed to parse template:", err.Error())
+			http.ServeFile(writer, request, staticFolder+"/index.html")
+			return
+		}
+	}
+}

controller/handler/spa_test.go

@@ -0,0 +1,65 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/TwinProduction/gatus/config"
+	"github.com/TwinProduction/gatus/core"
+	"github.com/TwinProduction/gatus/storage"
+	"github.com/TwinProduction/gatus/watchdog"
+)
+
+func TestSinglePageApplication(t *testing.T) {
+	defer storage.Get().Clear()
+	defer cache.Clear()
+	cfg := &config.Config{
+		Metrics: true,
+		Services: []*core.Service{
+			{
+				Name:  "frontend",
+				Group: "core",
+			},
+			{
+				Name:  "backend",
+				Group: "core",
+			},
+		},
+	}
+	watchdog.UpdateServiceStatuses(cfg.Services[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateServiceStatuses(cfg.Services[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	router := CreateRouter("../../web/static", cfg.Security, nil, cfg.Metrics)
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+		Gzip         bool
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "frontend-home",
+			Path:         "/",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "frontend-service",
+			Path:         "/services/core_frontend",
+			ExpectedCode: http.StatusOK,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", scenario.Path, nil)
+			if scenario.Gzip {
+				request.Header.Set("Accept-Encoding", "gzip")
+			}
+			responseRecorder := httptest.NewRecorder()
+			router.ServeHTTP(responseRecorder, request)
+			if responseRecorder.Code != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
+			}
+		})
+	}
+}

controller/handler/util.go

@@ -0,0 +1,48 @@
+package handler
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/TwinProduction/gatus/storage/store/common"
+)
+
+const (
+	// DefaultPage is the default page to use if none is specified or an invalid value is provided
+	DefaultPage = 1
+
+	// DefaultPageSize is the default page siZE to use if none is specified or an invalid value is provided
+	DefaultPageSize = 20
+
+	// MaximumPageSize is the maximum page size allowed
+	MaximumPageSize = common.MaximumNumberOfResults
+)
+
+func extractPageAndPageSizeFromRequest(r *http.Request) (page int, pageSize int) {
+	var err error
+	if pageParameter := r.URL.Query().Get("page"); len(pageParameter) == 0 {
+		page = DefaultPage
+	} else {
+		page, err = strconv.Atoi(pageParameter)
+		if err != nil {
+			page = DefaultPage
+		}
+		if page < 1 {
+			page = DefaultPage
+		}
+	}
+	if pageSizeParameter := r.URL.Query().Get("pageSize"); len(pageSizeParameter) == 0 {
+		pageSize = DefaultPageSize
+	} else {
+		pageSize, err = strconv.Atoi(pageSizeParameter)
+		if err != nil {
+			pageSize = DefaultPageSize
+		}
+		if pageSize > MaximumPageSize {
+			pageSize = MaximumPageSize
+		} else if pageSize < 1 {
+			pageSize = DefaultPageSize
+		}
+	}
+	return
+}

controller/handler/util_test.go

@@ -0,0 +1,67 @@
+package handler
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+)
+
+func TestExtractPageAndPageSizeFromRequest(t *testing.T) {
+	type Scenario struct {
+		Name             string
+		Page             string
+		PageSize         string
+		ExpectedPage     int
+		ExpectedPageSize int
+	}
+	scenarios := []Scenario{
+		{
+			Page:             "1",
+			PageSize:         "20",
+			ExpectedPage:     1,
+			ExpectedPageSize: 20,
+		},
+		{
+			Page:             "2",
+			PageSize:         "10",
+			ExpectedPage:     2,
+			ExpectedPageSize: 10,
+		},
+		{
+			Page:             "2",
+			PageSize:         "10",
+			ExpectedPage:     2,
+			ExpectedPageSize: 10,
+		},
+		{
+			Page:             "1",
+			PageSize:         "999999",
+			ExpectedPage:     1,
+			ExpectedPageSize: MaximumPageSize,
+		},
+		{
+			Page:             "-1",
+			PageSize:         "-1",
+			ExpectedPage:     DefaultPage,
+			ExpectedPageSize: DefaultPageSize,
+		},
+		{
+			Page:             "invalid",
+			PageSize:         "invalid",
+			ExpectedPage:     DefaultPage,
+			ExpectedPageSize: DefaultPageSize,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run("page-"+scenario.Page+"-pageSize-"+scenario.PageSize, func(t *testing.T) {
+			request, _ := http.NewRequest("GET", fmt.Sprintf("/api/v1/statuses?page=%s&pageSize=%s", scenario.Page, scenario.PageSize), nil)
+			actualPage, actualPageSize := extractPageAndPageSizeFromRequest(request)
+			if actualPage != scenario.ExpectedPage {
+				t.Errorf("expected %d, got %d", scenario.ExpectedPage, actualPage)
+			}
+			if actualPageSize != scenario.ExpectedPageSize {
+				t.Errorf("expected %d, got %d", scenario.ExpectedPageSize, actualPageSize)
+			}
+		})
+	}
+}

controller/spa.go

@@ -1,8 +0,0 @@
-package controller
-
-import "net/http"
-
-// spaHandler handles requests for /
-func spaHandler(writer http.ResponseWriter, request *http.Request) {
-	http.ServeFile(writer, request, staticFolder+"/index.html")
-}

controller/util.go

@@ -1,46 +0,0 @@
-package controller
-
-import (
-	"net/http"
-	"strconv"
-)
-
-const (
-	// DefaultPage is the default page to use if none is specified or an invalid value is provided
-	DefaultPage = 1
-
-	// DefaultPageSize is the default page siZE to use if none is specified or an invalid value is provided
-	DefaultPageSize = 20
-
-	// MaximumPageSize is the maximum page size allowed
-	MaximumPageSize = 100
-)
-
-func extractPageAndPageSizeFromRequest(r *http.Request) (page int, pageSize int) {
-	var err error
-	if pageParameter := r.URL.Query().Get("page"); len(pageParameter) == 0 {
-		page = DefaultPage
-	} else {
-		page, err = strconv.Atoi(pageParameter)
-		if err != nil {
-			page = DefaultPage
-		}
-		if page < 1 {
-			page = DefaultPage
-		}
-	}
-	if pageSizeParameter := r.URL.Query().Get("pageSize"); len(pageSizeParameter) == 0 {
-		pageSize = DefaultPageSize
-	} else {
-		pageSize, err = strconv.Atoi(pageSizeParameter)
-		if err != nil {
-			pageSize = DefaultPageSize
-		}
-		if pageSize > MaximumPageSize {
-			pageSize = MaximumPageSize
-		} else if pageSize < 1 {
-			pageSize = DefaultPageSize
-		}
-	}
-	return
-}

controller/util_test.go

@@ -1,67 +0,0 @@
-package controller
-
-import (
-	"fmt"
-	"net/http"
-	"testing"
-)
-
-func TestExtractPageAndPageSizeFromRequest(t *testing.T) {
-	type Scenario struct {
-		Name             string
-		Page             string
-		PageSize         string
-		ExpectedPage     int
-		ExpectedPageSize int
-	}
-	scenarios := []Scenario{
-		{
-			Page:             "1",
-			PageSize:         "20",
-			ExpectedPage:     1,
-			ExpectedPageSize: 20,
-		},
-		{
-			Page:             "2",
-			PageSize:         "10",
-			ExpectedPage:     2,
-			ExpectedPageSize: 10,
-		},
-		{
-			Page:             "2",
-			PageSize:         "10",
-			ExpectedPage:     2,
-			ExpectedPageSize: 10,
-		},
-		{
-			Page:             "1",
-			PageSize:         "999999",
-			ExpectedPage:     1,
-			ExpectedPageSize: MaximumPageSize,
-		},
-		{
-			Page:             "-1",
-			PageSize:         "-1",
-			ExpectedPage:     DefaultPage,
-			ExpectedPageSize: DefaultPageSize,
-		},
-		{
-			Page:             "invalid",
-			PageSize:         "invalid",
-			ExpectedPage:     DefaultPage,
-			ExpectedPageSize: DefaultPageSize,
-		},
-	}
-	for _, scenario := range scenarios {
-		t.Run("page-"+scenario.Page+"-pageSize-"+scenario.PageSize, func(t *testing.T) {
-			request, _ := http.NewRequest("GET", fmt.Sprintf("/api/v1/statuses?page=%s&pageSize=%s", scenario.Page, scenario.PageSize), nil)
-			actualPage, actualPageSize := extractPageAndPageSizeFromRequest(request)
-			if actualPage != scenario.ExpectedPage {
-				t.Errorf("expected %d, got %d", scenario.ExpectedPage, actualPage)
-			}
-			if actualPageSize != scenario.ExpectedPageSize {
-				t.Errorf("expected %d, got %d", scenario.ExpectedPageSize, actualPageSize)
-			}
-		})
-	}
-}

core/condition.go

@@ -85,44 +85,44 @@ type Condition string
 
 // evaluate the Condition with the Result of the health check
 // TODO: Add a mandatory space between each operators (e.g. " == " instead of "==") (BREAKING CHANGE)
-func (c Condition) evaluate(result *Result) bool {
+func (c Condition) evaluate(result *Result, dontResolveFailedConditions bool) bool {
 	condition := string(c)
 	success := false
 	conditionToDisplay := condition
 	if strings.Contains(condition, "==") {
 		parameters, resolvedParameters := sanitizeAndResolve(strings.Split(condition, "=="), result)
 		success = isEqual(resolvedParameters[0], resolvedParameters[1])
-		if !success {
+		if !success && !dontResolveFailedConditions {
 			conditionToDisplay = prettify(parameters, resolvedParameters, "==")
 		}
 	} else if strings.Contains(condition, "!=") {
 		parameters, resolvedParameters := sanitizeAndResolve(strings.Split(condition, "!="), result)
 		success = !isEqual(resolvedParameters[0], resolvedParameters[1])
-		if !success {
+		if !success && !dontResolveFailedConditions {
 			conditionToDisplay = prettify(parameters, resolvedParameters, "!=")
 		}
 	} else if strings.Contains(condition, "<=") {
 		parameters, resolvedParameters := sanitizeAndResolveNumerical(strings.Split(condition, "<="), result)
 		success = resolvedParameters[0] <= resolvedParameters[1]
-		if !success {
+		if !success && !dontResolveFailedConditions {
 			conditionToDisplay = prettifyNumericalParameters(parameters, resolvedParameters, "<=")
 		}
 	} else if strings.Contains(condition, ">=") {
 		parameters, resolvedParameters := sanitizeAndResolveNumerical(strings.Split(condition, ">="), result)
 		success = resolvedParameters[0] >= resolvedParameters[1]
-		if !success {
+		if !success && !dontResolveFailedConditions {
 			conditionToDisplay = prettifyNumericalParameters(parameters, resolvedParameters, ">=")
 		}
 	} else if strings.Contains(condition, ">") {
 		parameters, resolvedParameters := sanitizeAndResolveNumerical(strings.Split(condition, ">"), result)
 		success = resolvedParameters[0] > resolvedParameters[1]
-		if !success {
+		if !success && !dontResolveFailedConditions {
 			conditionToDisplay = prettifyNumericalParameters(parameters, resolvedParameters, ">")
 		}
 	} else if strings.Contains(condition, "<") {
 		parameters, resolvedParameters := sanitizeAndResolveNumerical(strings.Split(condition, "<"), result)
 		success = resolvedParameters[0] < resolvedParameters[1]
-		if !success {
+		if !success && !dontResolveFailedConditions {
 			conditionToDisplay = prettifyNumericalParameters(parameters, resolvedParameters, "<")
 		}
 	} else {

core/condition_bench_test.go

@@ -6,7 +6,7 @@ func BenchmarkCondition_evaluateWithBodyStringAny(b *testing.B) {
 	condition := Condition("[BODY].name == any(john.doe, jane.doe)")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"john.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -15,7 +15,7 @@ func BenchmarkCondition_evaluateWithBodyStringAnyFailure(b *testing.B) {
 	condition := Condition("[BODY].name == any(john.doe, jane.doe)")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"bob.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -24,7 +24,7 @@ func BenchmarkCondition_evaluateWithBodyString(b *testing.B) {
 	condition := Condition("[BODY].name == john.doe")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"john.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -33,7 +33,7 @@ func BenchmarkCondition_evaluateWithBodyStringFailure(b *testing.B) {
 	condition := Condition("[BODY].name == john.doe")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"bob.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -42,7 +42,7 @@ func BenchmarkCondition_evaluateWithBodyStringFailureInvalidPath(b *testing.B) {
 	condition := Condition("[BODY].user.name == bob.doe")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"bob.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -51,7 +51,7 @@ func BenchmarkCondition_evaluateWithBodyStringLen(b *testing.B) {
 	condition := Condition("len([BODY].name) == 8")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"john.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -60,7 +60,7 @@ func BenchmarkCondition_evaluateWithBodyStringLenFailure(b *testing.B) {
 	condition := Condition("len([BODY].name) == 8")
 	for n := 0; n < b.N; n++ {
 		result := &Result{body: []byte("{\"name\": \"bob.doe\"}")}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -69,7 +69,7 @@ func BenchmarkCondition_evaluateWithStatus(b *testing.B) {
 	condition := Condition("[STATUS] == 200")
 	for n := 0; n < b.N; n++ {
 		result := &Result{HTTPStatus: 200}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }
@@ -78,7 +78,7 @@ func BenchmarkCondition_evaluateWithStatusFailure(b *testing.B) {
 	condition := Condition("[STATUS] == 200")
 	for n := 0; n < b.N; n++ {
 		result := &Result{HTTPStatus: 400}
-		condition.evaluate(result)
+		condition.evaluate(result, false)
 	}
 	b.ReportAllocs()
 }

core/condition_test.go

@@ -8,11 +8,12 @@ import (
 
 func TestCondition_evaluate(t *testing.T) {
 	type scenario struct {
-		Name            string
-		Condition       Condition
-		Result          *Result
-		ExpectedSuccess bool
-		ExpectedOutput  string
+		Name                        string
+		Condition                   Condition
+		Result                      *Result
+		DontResolveFailedConditions bool
+		ExpectedSuccess             bool
+		ExpectedOutput              string
 	}
 	scenarios := []scenario{
 		{
@@ -372,6 +373,14 @@ func TestCondition_evaluate(t *testing.T) {
 			ExpectedSuccess: false,
 			ExpectedOutput:  "[STATUS] (404) == any(200, 429)",
 		},
+		{
+			Name:                        "status-any-failure-but-dont-resolve",
+			Condition:                   Condition("[STATUS] == any(200, 429)"),
+			Result:                      &Result{HTTPStatus: 404},
+			DontResolveFailedConditions: true,
+			ExpectedSuccess:             false,
+			ExpectedOutput:              "[STATUS] == any(200, 429)",
+		},
 		{
 			Name:            "connected",
 			Condition:       Condition("[CONNECTED] == true"),
@@ -435,6 +444,14 @@ func TestCondition_evaluate(t *testing.T) {
 			ExpectedSuccess: false,
 			ExpectedOutput:  "has([BODY].errors) (true) == false",
 		},
+		{
+			Name:                        "has-failure-but-dont-resolve",
+			Condition:                   Condition("has([BODY].errors) == false"),
+			Result:                      &Result{body: []byte("{\"errors\": [\"1\"]}")},
+			DontResolveFailedConditions: true,
+			ExpectedSuccess:             false,
+			ExpectedOutput:              "has([BODY].errors) == false",
+		},
 		{
 			Name:            "no-placeholders",
 			Condition:       Condition("1 == 2"),
@@ -445,7 +462,7 @@ func TestCondition_evaluate(t *testing.T) {
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
-			scenario.Condition.evaluate(scenario.Result)
+			scenario.Condition.evaluate(scenario.Result, scenario.DontResolveFailedConditions)
 			if scenario.Result.ConditionResults[0].Success != scenario.ExpectedSuccess {
 				t.Errorf("Condition '%s' should have been success=%v", scenario.Condition, scenario.ExpectedSuccess)
 			}
@@ -459,7 +476,7 @@ func TestCondition_evaluate(t *testing.T) {
 func TestCondition_evaluateWithInvalidOperator(t *testing.T) {
 	condition := Condition("[STATUS] ? 201")
 	result := &Result{HTTPStatus: 201}
-	condition.evaluate(result)
+	condition.evaluate(result, false)
 	if result.Success {
 		t.Error("condition was invalid, result should've been a failure")
 	}

core/event.go

@@ -24,3 +24,14 @@ var (
 	// EventUnhealthy is a type of event that represents a service failing one or more of its conditions
 	EventUnhealthy EventType = "UNHEALTHY"
 )
+
+// NewEventFromResult creates an Event from a Result
+func NewEventFromResult(result *Result) *Event {
+	event := &Event{Timestamp: result.Timestamp}
+	if result.Success {
+		event.Type = EventHealthy
+	} else {
+		event.Type = EventUnhealthy
+	}
+	return event
+}

core/event_test.go

@@ -0,0 +1,12 @@
+package core
+
+import "testing"
+
+func TestNewEventFromResult(t *testing.T) {
+	if event := NewEventFromResult(&Result{Success: true}); event.Type != EventHealthy {
+		t.Error("expected event.Type to be EventHealthy")
+	}
+	if event := NewEventFromResult(&Result{Success: false}); event.Type != EventUnhealthy {
+		t.Error("expected event.Type to be EventUnhealthy")
+	}
+}

core/result.go

@@ -25,7 +25,7 @@ type Result struct {
 	Duration time.Duration `json:"duration"`
 
 	// Errors encountered during the evaluation of the service's health
-	Errors []string `json:"errors"` // XXX: find a way to filter out duplicate errors
+	Errors []string `json:"errors"`
 
 	// ConditionResults results of the service's conditions
 	ConditionResults []*ConditionResult `json:"conditionResults"`

core/service-status.go

@@ -1,114 +0,0 @@
-package core
-
-import (
-	"time"
-
-	"github.com/TwinProduction/gatus/util"
-)
-
-const (
-	// MaximumNumberOfResults is the maximum number of results that ServiceStatus.Results can have
-	MaximumNumberOfResults = 100
-
-	// MaximumNumberOfEvents is the maximum number of events that ServiceStatus.Events can have
-	MaximumNumberOfEvents = 50
-)
-
-// ServiceStatus contains the evaluation Results of a Service
-type ServiceStatus struct {
-	// Name of the service
-	Name string `json:"name,omitempty"`
-
-	// Group the service is a part of. Used for grouping multiple services together on the front end.
-	Group string `json:"group,omitempty"`
-
-	// Key is the key representing the ServiceStatus
-	Key string `json:"key"`
-
-	// Results is the list of service evaluation results
-	Results []*Result `json:"results"`
-
-	// Events is a list of events
-	//
-	// We don't expose this through JSON, because the main dashboard doesn't need to have this data.
-	// However, the detailed service page does leverage this by including it to a map that will be
-	// marshalled alongside the ServiceStatus.
-	Events []*Event `json:"-"`
-
-	// Uptime information on the service's uptime
-	//
-	// We don't expose this through JSON, because the main dashboard doesn't need to have this data.
-	// However, the detailed service page does leverage this by including it to a map that will be
-	// marshalled alongside the ServiceStatus.
-	Uptime *Uptime `json:"-"`
-}
-
-// NewServiceStatus creates a new ServiceStatus
-func NewServiceStatus(service *Service) *ServiceStatus {
-	return &ServiceStatus{
-		Name:    service.Name,
-		Group:   service.Group,
-		Key:     util.ConvertGroupAndServiceToKey(service.Group, service.Name),
-		Results: make([]*Result, 0),
-		Events: []*Event{{
-			Type:      EventStart,
-			Timestamp: time.Now(),
-		}},
-		Uptime: NewUptime(),
-	}
-}
-
-// WithResultPagination returns a shallow copy of the ServiceStatus with only the results
-// within the range defined by the page and pageSize parameters
-func (ss ServiceStatus) WithResultPagination(page, pageSize int) *ServiceStatus {
-	shallowCopy := ss
-	numberOfResults := len(shallowCopy.Results)
-	start := numberOfResults - (page * pageSize)
-	end := numberOfResults - ((page - 1) * pageSize)
-	if start > numberOfResults {
-		start = -1
-	} else if start < 0 {
-		start = 0
-	}
-	if end > numberOfResults {
-		end = numberOfResults
-	}
-	if start < 0 || end < 0 {
-		shallowCopy.Results = []*Result{}
-	} else {
-		shallowCopy.Results = shallowCopy.Results[start:end]
-	}
-	return &shallowCopy
-}
-
-// AddResult adds a Result to ServiceStatus.Results and makes sure that there are
-// no more than 20 results in the Results slice
-func (ss *ServiceStatus) AddResult(result *Result) {
-	if len(ss.Results) > 0 {
-		// Check if there's any change since the last result
-		// OR there's only 1 event, which only happens when there's a start event
-		if ss.Results[len(ss.Results)-1].Success != result.Success || len(ss.Events) == 1 {
-			event := &Event{Timestamp: result.Timestamp}
-			if result.Success {
-				event.Type = EventHealthy
-			} else {
-				event.Type = EventUnhealthy
-			}
-			ss.Events = append(ss.Events, event)
-			if len(ss.Events) > MaximumNumberOfEvents {
-				// Doing ss.Events[1:] would usually be sufficient, but in the case where for some reason, the slice has
-				// more than one extra element, we can get rid of all of them at once and thus returning the slice to a
-				// length of MaximumNumberOfEvents by using ss.Events[len(ss.Events)-MaximumNumberOfEvents:] instead
-				ss.Events = ss.Events[len(ss.Events)-MaximumNumberOfEvents:]
-			}
-		}
-	}
-	ss.Results = append(ss.Results, result)
-	if len(ss.Results) > MaximumNumberOfResults {
-		// Doing ss.Results[1:] would usually be sufficient, but in the case where for some reason, the slice has more
-		// than one extra element, we can get rid of all of them at once and thus returning the slice to a length of
-		// MaximumNumberOfResults by using ss.Results[len(ss.Results)-MaximumNumberOfResults:] instead
-		ss.Results = ss.Results[len(ss.Results)-MaximumNumberOfResults:]
-	}
-	ss.Uptime.ProcessResult(result)
-}

core/service-status_bench_test.go

@@ -1,92 +0,0 @@
-package core
-
-import (
-	"testing"
-	"time"
-)
-
-var (
-	firstCondition  = Condition("[STATUS] == 200")
-	secondCondition = Condition("[RESPONSE_TIME] < 500")
-	thirdCondition  = Condition("[CERTIFICATE_EXPIRATION] < 72h")
-
-	timestamp = time.Now()
-
-	testService = Service{
-		Name:                    "name",
-		Group:                   "group",
-		URL:                     "https://example.org/what/ever",
-		Method:                  "GET",
-		Body:                    "body",
-		Interval:                30 * time.Second,
-		Conditions:              []*Condition{&firstCondition, &secondCondition, &thirdCondition},
-		Alerts:                  nil,
-		Insecure:                false,
-		NumberOfFailuresInARow:  0,
-		NumberOfSuccessesInARow: 0,
-	}
-	testSuccessfulResult = Result{
-		Hostname:              "example.org",
-		IP:                    "127.0.0.1",
-		HTTPStatus:            200,
-		body:                  []byte("body"),
-		Errors:                nil,
-		Connected:             true,
-		Success:               true,
-		Timestamp:             timestamp,
-		Duration:              150 * time.Millisecond,
-		CertificateExpiration: 10 * time.Hour,
-		ConditionResults: []*ConditionResult{
-			{
-				Condition: "[STATUS] == 200",
-				Success:   true,
-			},
-			{
-				Condition: "[RESPONSE_TIME] < 500",
-				Success:   true,
-			},
-			{
-				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
-				Success:   true,
-			},
-		},
-	}
-	testUnsuccessfulResult = Result{
-		Hostname:              "example.org",
-		IP:                    "127.0.0.1",
-		HTTPStatus:            200,
-		body:                  []byte("body"),
-		Errors:                []string{"error-1", "error-2"},
-		Connected:             true,
-		Success:               false,
-		Timestamp:             timestamp,
-		Duration:              750 * time.Millisecond,
-		CertificateExpiration: 10 * time.Hour,
-		ConditionResults: []*ConditionResult{
-			{
-				Condition: "[STATUS] == 200",
-				Success:   true,
-			},
-			{
-				Condition: "[RESPONSE_TIME] < 500",
-				Success:   false,
-			},
-			{
-				Condition: "[CERTIFICATE_EXPIRATION] < 72h",
-				Success:   false,
-			},
-		},
-	}
-)
-
-func BenchmarkServiceStatus_WithResultPagination(b *testing.B) {
-	service := &testService
-	serviceStatus := NewServiceStatus(service)
-	for i := 0; i < MaximumNumberOfResults; i++ {
-		serviceStatus.AddResult(&testSuccessfulResult)
-	}
-	for n := 0; n < b.N; n++ {
-		serviceStatus.WithResultPagination(1, 20)
-	}
-	b.ReportAllocs()
-}

core/service-status_test.go

@@ -1,66 +0,0 @@
-package core
-
-import (
-	"testing"
-	"time"
-)
-
-func TestNewServiceStatus(t *testing.T) {
-	service := &Service{Name: "name", Group: "group"}
-	serviceStatus := NewServiceStatus(service)
-	if serviceStatus.Name != service.Name {
-		t.Errorf("expected %s, got %s", service.Name, serviceStatus.Name)
-	}
-	if serviceStatus.Group != service.Group {
-		t.Errorf("expected %s, got %s", service.Group, serviceStatus.Group)
-	}
-	if serviceStatus.Key != "group_name" {
-		t.Errorf("expected %s, got %s", "group_name", serviceStatus.Key)
-	}
-}
-
-func TestServiceStatus_AddResult(t *testing.T) {
-	service := &Service{Name: "name", Group: "group"}
-	serviceStatus := NewServiceStatus(service)
-	for i := 0; i < MaximumNumberOfResults+10; i++ {
-		serviceStatus.AddResult(&Result{Timestamp: time.Now()})
-	}
-	if len(serviceStatus.Results) != MaximumNumberOfResults {
-		t.Errorf("expected serviceStatus.Results to not exceed a length of %d", MaximumNumberOfResults)
-	}
-}
-
-func TestServiceStatus_WithResultPagination(t *testing.T) {
-	service := &Service{Name: "name", Group: "group"}
-	serviceStatus := NewServiceStatus(service)
-	for i := 0; i < 25; i++ {
-		serviceStatus.AddResult(&Result{Timestamp: time.Now()})
-	}
-	if len(serviceStatus.WithResultPagination(1, 1).Results) != 1 {
-		t.Errorf("expected to have 1 result")
-	}
-	if len(serviceStatus.WithResultPagination(5, 0).Results) != 0 {
-		t.Errorf("expected to have 0 results")
-	}
-	if len(serviceStatus.WithResultPagination(-1, 20).Results) != 0 {
-		t.Errorf("expected to have 0 result, because the page was invalid")
-	}
-	if len(serviceStatus.WithResultPagination(1, -1).Results) != 0 {
-		t.Errorf("expected to have 0 result, because the page size was invalid")
-	}
-	if len(serviceStatus.WithResultPagination(1, 10).Results) != 10 {
-		t.Errorf("expected to have 10 results, because given a page size of 10, page 1 should have 10 elements")
-	}
-	if len(serviceStatus.WithResultPagination(2, 10).Results) != 10 {
-		t.Errorf("expected to have 10 results, because given a page size of 10, page 2 should have 10 elements")
-	}
-	if len(serviceStatus.WithResultPagination(3, 10).Results) != 5 {
-		t.Errorf("expected to have 5 results, because given a page size of 10, page 3 should have 5 elements")
-	}
-	if len(serviceStatus.WithResultPagination(4, 10).Results) != 0 {
-		t.Errorf("expected to have 0 results, because given a page size of 10, page 4 should have 0 elements")
-	}
-	if len(serviceStatus.WithResultPagination(1, 50).Results) != 25 {
-		t.Errorf("expected to have 25 results, because there's only 25 results")
-	}
-}

core/service.go

@@ -14,6 +14,8 @@ import (
 
 	"github.com/TwinProduction/gatus/alerting/alert"
 	"github.com/TwinProduction/gatus/client"
+	"github.com/TwinProduction/gatus/core/ui"
+	"github.com/TwinProduction/gatus/util"
 )
 
 const (
@@ -76,8 +78,11 @@ type Service struct {
 	// Alerts is the alerting configuration for the service in case of failure
 	Alerts []*alert.Alert `yaml:"alerts"`
 
-	// Insecure is whether to skip verifying the server's certificate chain and host name
-	Insecure bool `yaml:"insecure,omitempty"`
+	// ClientConfig is the configuration of the client used to communicate with the service's target
+	ClientConfig *client.Config `yaml:"client"`
+
+	// UIConfig is the configuration for the UI
+	UIConfig *ui.Config `yaml:"ui"`
 
 	// NumberOfFailuresInARow is the number of unsuccessful evaluations in a row
 	NumberOfFailuresInARow int
@@ -89,6 +94,14 @@ type Service struct {
 // ValidateAndSetDefaults validates the service's configuration and sets the default value of fields that have one
 func (service *Service) ValidateAndSetDefaults() error {
 	// Set default values
+	if service.ClientConfig == nil {
+		service.ClientConfig = client.GetDefaultConfig()
+	} else {
+		service.ClientConfig.ValidateAndSetDefaults()
+	}
+	if service.UIConfig == nil {
+		service.UIConfig = ui.GetDefaultConfig()
+	}
 	if service.Interval == 0 {
 		service.Interval = 1 * time.Minute
 	}
@@ -135,6 +148,11 @@ func (service *Service) ValidateAndSetDefaults() error {
 	return nil
 }
 
+// Key returns the unique key for the Service
+func (service Service) Key() string {
+	return util.ConvertGroupAndServiceToKey(service.Group, service.Name)
+}
+
 // EvaluateHealth sends a request to the service's URL and evaluates the conditions of the service.
 func (service *Service) EvaluateHealth() *Result {
 	result := &Result{Success: true, Errors: []string{}}
@@ -145,7 +163,7 @@ func (service *Service) EvaluateHealth() *Result {
 		result.Success = false
 	}
 	for _, condition := range service.Conditions {
-		success := condition.evaluate(result)
+		success := condition.evaluate(result, service.UIConfig.DontResolveFailedConditions)
 		if !success {
 			result.Success = false
 		}
@@ -153,6 +171,10 @@ func (service *Service) EvaluateHealth() *Result {
 	result.Timestamp = time.Now()
 	// No need to keep the body after the service has been evaluated
 	result.body = nil
+	// Clean up parameters that we don't need to keep in the results
+	if service.UIConfig.HideHostname {
+		result.Hostname = ""
+	}
 	return result
 }
 
@@ -193,7 +215,7 @@ func (service *Service) call(result *Result) {
 		service.DNS.query(service.URL, result)
 		result.Duration = time.Since(startTime)
 	} else if isServiceStartTLS {
-		result.Connected, certificate, err = client.CanPerformStartTLS(strings.TrimPrefix(service.URL, "starttls://"), service.Insecure)
+		result.Connected, certificate, err = client.CanPerformStartTLS(strings.TrimPrefix(service.URL, "starttls://"), service.ClientConfig)
 		if err != nil {
 			result.AddError(err.Error())
 			return
@@ -201,12 +223,12 @@ func (service *Service) call(result *Result) {
 		result.Duration = time.Since(startTime)
 		result.CertificateExpiration = time.Until(certificate.NotAfter)
 	} else if isServiceTCP {
-		result.Connected = client.CanCreateTCPConnection(strings.TrimPrefix(service.URL, "tcp://"))
+		result.Connected = client.CanCreateTCPConnection(strings.TrimPrefix(service.URL, "tcp://"), service.ClientConfig)
 		result.Duration = time.Since(startTime)
 	} else if isServiceICMP {
-		result.Connected, result.Duration = client.Ping(strings.TrimPrefix(service.URL, "icmp://"))
+		result.Connected, result.Duration = client.Ping(strings.TrimPrefix(service.URL, "icmp://"), service.ClientConfig)
 	} else {
-		response, err = client.GetHTTPClient(service.Insecure).Do(request)
+		response, err = client.GetHTTPClient(service.ClientConfig).Do(request)
 		result.Duration = time.Since(startTime)
 		if err != nil {
 			result.AddError(err.Error())

core/service_status.go

@@ -0,0 +1,38 @@
+package core
+
+// ServiceStatus contains the evaluation Results of a Service
+type ServiceStatus struct {
+	// Name of the service
+	Name string `json:"name,omitempty"`
+
+	// Group the service is a part of. Used for grouping multiple services together on the front end.
+	Group string `json:"group,omitempty"`
+
+	// Key is the key representing the ServiceStatus
+	Key string `json:"key"`
+
+	// Results is the list of service evaluation results
+	Results []*Result `json:"results"`
+
+	// Events is a list of events
+	Events []*Event `json:"events"`
+
+	// Uptime information on the service's uptime
+	//
+	// Used by the memory store.
+	//
+	// To retrieve the uptime between two time, use store.GetUptimeByKey.
+	Uptime *Uptime `json:"-"`
+}
+
+// NewServiceStatus creates a new ServiceStatus
+func NewServiceStatus(serviceKey, serviceGroup, serviceName string) *ServiceStatus {
+	return &ServiceStatus{
+		Name:    serviceName,
+		Group:   serviceGroup,
+		Key:     serviceKey,
+		Results: make([]*Result, 0),
+		Events:  make([]*Event, 0),
+		Uptime:  NewUptime(),
+	}
+}

core/service_status_test.go

@@ -0,0 +1,19 @@
+package core
+
+import (
+	"testing"
+)
+
+func TestNewServiceStatus(t *testing.T) {
+	service := &Service{Name: "name", Group: "group"}
+	serviceStatus := NewServiceStatus(service.Key(), service.Group, service.Name)
+	if serviceStatus.Name != service.Name {
+		t.Errorf("expected %s, got %s", service.Name, serviceStatus.Name)
+	}
+	if serviceStatus.Group != service.Group {
+		t.Errorf("expected %s, got %s", service.Group, serviceStatus.Group)
+	}
+	if serviceStatus.Key != "group_name" {
+		t.Errorf("expected %s, got %s", "group_name", serviceStatus.Key)
+	}
+}

core/service_test.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/TwinProduction/gatus/alerting/alert"
+	"github.com/TwinProduction/gatus/client"
 )
 
 func TestService_ValidateAndSetDefaults(t *testing.T) {
@@ -18,6 +19,19 @@ func TestService_ValidateAndSetDefaults(t *testing.T) {
 		Alerts:     []*alert.Alert{{Type: alert.TypePagerDuty}},
 	}
 	service.ValidateAndSetDefaults()
+	if service.ClientConfig == nil {
+		t.Error("client configuration should've been set to the default configuration")
+	} else {
+		if service.ClientConfig.Insecure != client.GetDefaultConfig().Insecure {
+			t.Errorf("Default client configuration should've set Insecure to %v, got %v", client.GetDefaultConfig().Insecure, service.ClientConfig.Insecure)
+		}
+		if service.ClientConfig.IgnoreRedirect != client.GetDefaultConfig().IgnoreRedirect {
+			t.Errorf("Default client configuration should've set IgnoreRedirect to %v, got %v", client.GetDefaultConfig().IgnoreRedirect, service.ClientConfig.IgnoreRedirect)
+		}
+		if service.ClientConfig.Timeout != client.GetDefaultConfig().Timeout {
+			t.Errorf("Default client configuration should've set Timeout to %v, got %v", client.GetDefaultConfig().Timeout, service.ClientConfig.Timeout)
+		}
+	}
 	if service.Method != "GET" {
 		t.Error("Service method should've defaulted to GET")
 	}
@@ -41,6 +55,34 @@ func TestService_ValidateAndSetDefaults(t *testing.T) {
 	}
 }
 
+func TestService_ValidateAndSetDefaultsWithClientConfig(t *testing.T) {
+	condition := Condition("[STATUS] == 200")
+	service := Service{
+		Name:       "twinnation-health",
+		URL:        "https://twinnation.org/health",
+		Conditions: []*Condition{&condition},
+		ClientConfig: &client.Config{
+			Insecure:       true,
+			IgnoreRedirect: true,
+			Timeout:        0,
+		},
+	}
+	service.ValidateAndSetDefaults()
+	if service.ClientConfig == nil {
+		t.Error("client configuration should've been set to the default configuration")
+	} else {
+		if !service.ClientConfig.Insecure {
+			t.Error("service.ClientConfig.Insecure should've been set to true")
+		}
+		if !service.ClientConfig.IgnoreRedirect {
+			t.Error("service.ClientConfig.IgnoreRedirect should've been set to true")
+		}
+		if service.ClientConfig.Timeout != client.GetDefaultConfig().Timeout {
+			t.Error("service.ClientConfig.Timeout should've been set to 10s, because the timeout value entered is not set or invalid")
+		}
+	}
+}
+
 func TestService_ValidateAndSetDefaultsWithNoName(t *testing.T) {
 	defer func() { recover() }()
 	condition := Condition("[STATUS] == 200")
@@ -205,6 +247,7 @@ func TestIntegrationEvaluateHealth(t *testing.T) {
 		URL:        "https://twinnation.org/health",
 		Conditions: []*Condition{&condition, &bodyCondition},
 	}
+	service.ValidateAndSetDefaults()
 	result := service.EvaluateHealth()
 	if !result.ConditionResults[0].Success {
 		t.Errorf("Condition '%s' should have been a success", condition)
@@ -224,6 +267,7 @@ func TestIntegrationEvaluateHealthWithFailure(t *testing.T) {
 		URL:        "https://twinnation.org/health",
 		Conditions: []*Condition{&condition},
 	}
+	service.ValidateAndSetDefaults()
 	result := service.EvaluateHealth()
 	if result.ConditionResults[0].Success {
 		t.Errorf("Condition '%s' should have been a failure", condition)
@@ -248,6 +292,7 @@ func TestIntegrationEvaluateHealthForDNS(t *testing.T) {
 		},
 		Conditions: []*Condition{&conditionSuccess, &conditionBody},
 	}
+	service.ValidateAndSetDefaults()
 	result := service.EvaluateHealth()
 	if !result.ConditionResults[0].Success {
 		t.Errorf("Conditions '%s' and %s should have been a success", conditionSuccess, conditionBody)
@@ -267,6 +312,7 @@ func TestIntegrationEvaluateHealthForICMP(t *testing.T) {
 		URL:        "icmp://127.0.0.1",
 		Conditions: []*Condition{&conditionSuccess},
 	}
+	service.ValidateAndSetDefaults()
 	result := service.EvaluateHealth()
 	if !result.ConditionResults[0].Success {
 		t.Errorf("Conditions '%s' should have been a success", conditionSuccess)

core/ui/ui.go

@@ -0,0 +1,17 @@
+package ui
+
+// Config is the UI configuration for services
+type Config struct {
+	// HideHostname whether to hide the hostname in the Result
+	HideHostname bool `yaml:"hide-hostname"`
+	// DontResolveFailedConditions whether to resolve failed conditions in the Result for display in the UI
+	DontResolveFailedConditions bool `yaml:"dont-resolve-failed-conditions"`
+}
+
+// GetDefaultConfig retrieves the default UI configuration
+func GetDefaultConfig() *Config {
+	return &Config{
+		HideHostname:                false,
+		DontResolveFailedConditions: false,
+	}
+}

core/uptime.go

@@ -1,33 +1,11 @@
 package core
 
-import (
-	"log"
-	"time"
-)
-
-const (
-	numberOfHoursInTenDays = 10 * 24
-	sevenDays              = 7 * 24 * time.Hour
-)
-
 // Uptime is the struct that contains the relevant data for calculating the uptime as well as the uptime itself
 // and some other statistics
 type Uptime struct {
-	LastSevenDays       float64 `json:"7d"`  // Uptime percentage over the past 7 days
-	LastTwentyFourHours float64 `json:"24h"` // Uptime percentage over the past 24 hours
-	LastHour            float64 `json:"1h"`  // Uptime percentage over the past hour
-
-	// SuccessfulExecutionsPerHour is a map containing the number of successes (value)
-	// for every hourly unix timestamps (key)
-	// Deprecated
-	SuccessfulExecutionsPerHour map[int64]uint64 `json:"-"`
-
-	// TotalExecutionsPerHour is a map containing the total number of checks (value)
-	// for every hourly unix timestamps (key)
-	// Deprecated
-	TotalExecutionsPerHour map[int64]uint64 `json:"-"`
-
 	// HourlyStatistics is a map containing metrics collected (value) for every hourly unix timestamps (key)
+	//
+	// Used only if the storage type is memory
 	HourlyStatistics map[int64]*HourlyUptimeStatistics `json:"-"`
 }
 
@@ -35,7 +13,7 @@ type Uptime struct {
 type HourlyUptimeStatistics struct {
 	TotalExecutions             uint64 // Total number of checks
 	SuccessfulExecutions        uint64 // Number of successful executions
-	TotalExecutionsResponseTime uint64 // Total response time for all executions
+	TotalExecutionsResponseTime uint64 // Total response time for all executions in milliseconds
 }
 
 // NewUptime creates a new Uptime
@@ -44,109 +22,3 @@ func NewUptime() *Uptime {
 		HourlyStatistics: make(map[int64]*HourlyUptimeStatistics),
 	}
 }
-
-// ProcessResult processes the result by extracting the relevant from the result and recalculating the uptime
-// if necessary
-func (uptime *Uptime) ProcessResult(result *Result) {
-	// XXX: Remove this on v3.0.0
-	if len(uptime.SuccessfulExecutionsPerHour) != 0 || len(uptime.TotalExecutionsPerHour) != 0 {
-		uptime.migrateToHourlyStatistics()
-	}
-	if uptime.HourlyStatistics == nil {
-		uptime.HourlyStatistics = make(map[int64]*HourlyUptimeStatistics)
-	}
-	unixTimestampFlooredAtHour := result.Timestamp.Unix() - (result.Timestamp.Unix() % 3600)
-	hourlyStats, _ := uptime.HourlyStatistics[unixTimestampFlooredAtHour]
-	if hourlyStats == nil {
-		hourlyStats = &HourlyUptimeStatistics{}
-		uptime.HourlyStatistics[unixTimestampFlooredAtHour] = hourlyStats
-	}
-	if result.Success {
-		hourlyStats.SuccessfulExecutions++
-	}
-	hourlyStats.TotalExecutions++
-	hourlyStats.TotalExecutionsResponseTime += uint64(result.Duration.Milliseconds())
-	// Clean up only when we're starting to have too many useless keys
-	// Note that this is only triggered when there are more entries than there should be after
-	// 10 days, despite the fact that we are deleting everything that's older than 7 days.
-	// This is to prevent re-iterating on every `ProcessResult` as soon as the uptime has been logged for 7 days.
-	if len(uptime.HourlyStatistics) > numberOfHoursInTenDays {
-		sevenDaysAgo := time.Now().Add(-(sevenDays + time.Hour)).Unix()
-		for hourlyUnixTimestamp := range uptime.HourlyStatistics {
-			if sevenDaysAgo > hourlyUnixTimestamp {
-				delete(uptime.HourlyStatistics, hourlyUnixTimestamp)
-			}
-		}
-	}
-	if result.Success {
-		// Recalculate uptime if at least one of the 1h, 24h or 7d uptime are not 100%
-		// If they're all 100%, then recalculating the uptime would be useless unless
-		// the result added was a failure (!result.Success)
-		if uptime.LastSevenDays != 1 || uptime.LastTwentyFourHours != 1 || uptime.LastHour != 1 {
-			uptime.recalculate()
-		}
-	} else {
-		// Recalculate uptime if at least one of the 1h, 24h or 7d uptime are not 0%
-		// If they're all 0%, then recalculating the uptime would be useless unless
-		// the result added was a success (result.Success)
-		if uptime.LastSevenDays != 0 || uptime.LastTwentyFourHours != 0 || uptime.LastHour != 0 {
-			uptime.recalculate()
-		}
-	}
-}
-
-func (uptime *Uptime) recalculate() {
-	uptimeBrackets := make(map[string]uint64)
-	now := time.Now()
-	// The oldest uptime bracket starts 7 days ago, so we'll start from there
-	timestamp := now.Add(-sevenDays)
-	for now.Sub(timestamp) >= 0 {
-		hourlyUnixTimestamp := timestamp.Unix() - (timestamp.Unix() % 3600)
-		hourlyStats := uptime.HourlyStatistics[hourlyUnixTimestamp]
-		if hourlyStats == nil || hourlyStats.TotalExecutions == 0 {
-			timestamp = timestamp.Add(time.Hour)
-			continue
-		}
-		uptimeBrackets["7d_success"] += hourlyStats.SuccessfulExecutions
-		uptimeBrackets["7d_total"] += hourlyStats.TotalExecutions
-		if now.Sub(timestamp) <= 24*time.Hour {
-			uptimeBrackets["24h_success"] += hourlyStats.SuccessfulExecutions
-			uptimeBrackets["24h_total"] += hourlyStats.TotalExecutions
-		}
-		if now.Sub(timestamp) <= time.Hour {
-			uptimeBrackets["1h_success"] += hourlyStats.SuccessfulExecutions
-			uptimeBrackets["1h_total"] += hourlyStats.TotalExecutions
-		}
-		timestamp = timestamp.Add(time.Hour)
-	}
-	if uptimeBrackets["7d_total"] > 0 {
-		uptime.LastSevenDays = float64(uptimeBrackets["7d_success"]) / float64(uptimeBrackets["7d_total"])
-	}
-	if uptimeBrackets["24h_total"] > 0 {
-		uptime.LastTwentyFourHours = float64(uptimeBrackets["24h_success"]) / float64(uptimeBrackets["24h_total"])
-	}
-	if uptimeBrackets["1h_total"] > 0 {
-		uptime.LastHour = float64(uptimeBrackets["1h_success"]) / float64(uptimeBrackets["1h_total"])
-	}
-}
-
-// XXX: Remove this on v3.0.0
-// Deprecated
-func (uptime *Uptime) migrateToHourlyStatistics() {
-	log.Println("[migrateToHourlyStatistics] Got", len(uptime.SuccessfulExecutionsPerHour), "entries for successful executions and", len(uptime.TotalExecutionsPerHour), "entries for total executions")
-	uptime.HourlyStatistics = make(map[int64]*HourlyUptimeStatistics)
-	for hourlyUnixTimestamp, totalExecutions := range uptime.TotalExecutionsPerHour {
-		if totalExecutions == 0 {
-			log.Println("[migrateToHourlyStatistics] Skipping entry at", hourlyUnixTimestamp, "because total number of executions is 0")
-			continue
-		}
-		uptime.HourlyStatistics[hourlyUnixTimestamp] = &HourlyUptimeStatistics{
-			TotalExecutions:             totalExecutions,
-			SuccessfulExecutions:        uptime.SuccessfulExecutionsPerHour[hourlyUnixTimestamp],
-			TotalExecutionsResponseTime: 0,
-		}
-	}
-	log.Println("[migrateToHourlyStatistics] Migrated", len(uptime.HourlyStatistics), "entries")
-	uptime.SuccessfulExecutionsPerHour = nil
-	uptime.TotalExecutionsPerHour = nil
-}

core/uptime_bench_test.go

@@ -1,24 +0,0 @@
-package core
-
-import (
-	"testing"
-	"time"
-)
-
-func BenchmarkUptime_ProcessResult(b *testing.B) {
-	uptime := NewUptime()
-	now := time.Now()
-	now = time.Date(now.Year(), now.Month(), now.Day(), now.Hour(), 0, 0, 0, now.Location())
-	// Start 12000 days ago
-	timestamp := now.Add(-12000 * 24 * time.Hour)
-	for n := 0; n < b.N; n++ {
-		uptime.ProcessResult(&Result{
-			Duration:  18 * time.Millisecond,
-			Success:   n%15 == 0,
-			Timestamp: timestamp,
-		})
-		// Simulate service with an interval of 3 minutes
-		timestamp = timestamp.Add(3 * time.Minute)
-	}
-	b.ReportAllocs()
-}

core/uptime_test.go

@@ -1,96 +0,0 @@
-package core
-
-import (
-	"testing"
-	"time"
-)
-
-func TestUptime_ProcessResult(t *testing.T) {
-	service := &Service{Name: "name", Group: "group"}
-	serviceStatus := NewServiceStatus(service)
-	uptime := serviceStatus.Uptime
-
-	checkUptimes(t, serviceStatus, 0.00, 0.00, 0.00)
-
-	now := time.Now()
-	now = time.Date(now.Year(), now.Month(), now.Day(), now.Hour(), 0, 0, 0, now.Location())
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-7 * 24 * time.Hour), Success: true})
-	checkUptimes(t, serviceStatus, 1.00, 0.00, 0.00)
-
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-6 * 24 * time.Hour), Success: false})
-	checkUptimes(t, serviceStatus, 0.50, 0.00, 0.00)
-
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-8 * 24 * time.Hour), Success: true})
-	checkUptimes(t, serviceStatus, 0.50, 0.00, 0.00)
-
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-24 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-12 * time.Hour), Success: true})
-	checkUptimes(t, serviceStatus, 0.75, 1.00, 0.00)
-
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-1 * time.Hour), Success: true, Duration: 10 * time.Millisecond})
-	checkHourlyStatistics(t, uptime.HourlyStatistics[now.Unix()-now.Unix()%3600-3600], 10, 1, 1)
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-30 * time.Minute), Success: false, Duration: 500 * time.Millisecond})
-	checkHourlyStatistics(t, uptime.HourlyStatistics[now.Unix()-now.Unix()%3600-3600], 510, 2, 1)
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-15 * time.Minute), Success: false, Duration: 25 * time.Millisecond})
-	checkHourlyStatistics(t, uptime.HourlyStatistics[now.Unix()-now.Unix()%3600-3600], 535, 3, 1)
-
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-10 * time.Minute), Success: false})
-	checkUptimes(t, serviceStatus, 0.50, 0.50, 0.25)
-
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-120 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-119 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-118 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-117 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-10 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-8 * time.Hour), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-30 * time.Minute), Success: true})
-	uptime.ProcessResult(&Result{Timestamp: now.Add(-25 * time.Minute), Success: true})
-	checkUptimes(t, serviceStatus, 0.75, 0.70, 0.50)
-}
-
-func TestServiceStatus_AddResultUptimeIsCleaningUpAfterItself(t *testing.T) {
-	service := &Service{Name: "name", Group: "group"}
-	serviceStatus := NewServiceStatus(service)
-	now := time.Now()
-	now = time.Date(now.Year(), now.Month(), now.Day(), now.Hour(), 0, 0, 0, now.Location())
-	// Start 12 days ago
-	timestamp := now.Add(-12 * 24 * time.Hour)
-	for timestamp.Unix() <= now.Unix() {
-		serviceStatus.AddResult(&Result{Timestamp: timestamp, Success: true})
-		if len(serviceStatus.Uptime.HourlyStatistics) > numberOfHoursInTenDays {
-			t.Errorf("At no point in time should there be more than %d entries in serviceStatus.SuccessfulExecutionsPerHour, but there are %d", numberOfHoursInTenDays, len(serviceStatus.Uptime.HourlyStatistics))
-		}
-		if now.Sub(timestamp) > time.Hour && serviceStatus.Uptime.LastHour != 0 {
-			t.Error("most recent timestamp > 1h ago, expected serviceStatus.Uptime.LastHour to be 0, got", serviceStatus.Uptime.LastHour)
-		}
-		if now.Sub(timestamp) < time.Hour && serviceStatus.Uptime.LastHour == 0 {
-			t.Error("most recent timestamp < 1h ago, expected serviceStatus.Uptime.LastHour to NOT be 0, got", serviceStatus.Uptime.LastHour)
-		}
-		// Simulate service with an interval of 3 minutes
-		timestamp = timestamp.Add(3 * time.Minute)
-	}
-}
-
-func checkUptimes(t *testing.T, status *ServiceStatus, expectedUptimeDuringLastSevenDays, expectedUptimeDuringLastTwentyFourHours, expectedUptimeDuringLastHour float64) {
-	if status.Uptime.LastSevenDays != expectedUptimeDuringLastSevenDays {
-		t.Errorf("expected status.Uptime.LastSevenDays to be %f, got %f", expectedUptimeDuringLastHour, status.Uptime.LastSevenDays)
-	}
-	if status.Uptime.LastTwentyFourHours != expectedUptimeDuringLastTwentyFourHours {
-		t.Errorf("expected status.Uptime.LastTwentyFourHours to be %f, got %f", expectedUptimeDuringLastTwentyFourHours, status.Uptime.LastTwentyFourHours)
-	}
-	if status.Uptime.LastHour != expectedUptimeDuringLastHour {
-		t.Errorf("expected status.Uptime.LastHour to be %f, got %f", expectedUptimeDuringLastHour, status.Uptime.LastHour)
-	}
-}
-
-func checkHourlyStatistics(t *testing.T, hourlyUptimeStatistics *HourlyUptimeStatistics, expectedTotalExecutionsResponseTime uint64, expectedTotalExecutions uint64, expectedSuccessfulExecutions uint64) {
-	if hourlyUptimeStatistics.TotalExecutionsResponseTime != expectedTotalExecutionsResponseTime {
-		t.Error("TotalExecutionsResponseTime should've been", expectedTotalExecutionsResponseTime, "got", hourlyUptimeStatistics.TotalExecutionsResponseTime)
-	}
-	if hourlyUptimeStatistics.TotalExecutions != expectedTotalExecutions {
-		t.Error("TotalExecutions should've been", expectedTotalExecutions, "got", hourlyUptimeStatistics.TotalExecutions)
-	}
-	if hourlyUptimeStatistics.SuccessfulExecutions != expectedSuccessfulExecutions {
-		t.Error("SuccessfulExecutions should've been", expectedSuccessfulExecutions, "got", hourlyUptimeStatistics.SuccessfulExecutions)
-	}
-}

example/docker-compose-grafana-prometheus/docker-compose.yml

@@ -1,43 +0,0 @@
-version: '3.7'
-
-services:
-  gatus:
-    container_name: gatus
-    image: twinproduction/gatus
-    restart: always
-    ports:
-      - 8080:8080
-    volumes:
-      - ./config.yaml:/config/config.yaml
-    networks:
-      - metrics
-
-  prometheus:
-    container_name: prometheus
-    image: prom/prometheus:v2.14.0
-    restart: always
-    command: --config.file=/etc/prometheus/prometheus.yml
-    ports:
-      - 9090:9090
-    volumes:
-      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
-    networks:
-      - metrics
-
-  grafana:
-    container_name: grafana
-    image: grafana/grafana:6.4.4
-    restart: always
-    environment:
-      GF_SECURITY_ADMIN_PASSWORD: secret
-    ports:
-      - 3000:3000
-    volumes:
-      - ./grafana/grafana.ini/:/etc/grafana/grafana.ini:ro
-      - ./grafana/provisioning/:/etc/grafana/provisioning/:ro
-    networks:
-      - metrics
-
-networks:
-  metrics:
-    driver: bridge

example/docker-compose-mattermost/docker-compose.yml

@@ -1,24 +0,0 @@
-version: "3.8"
-
-services:
-  gatus:
-    container_name: gatus
-    image: twinproduction/gatus:latest
-    ports:
-      - 8080:8080
-    volumes:
-      - ./config.yaml:/config/config.yaml
-    networks:
-      - default
-
-  mattermost:
-    container_name: mattermost
-    image: mattermost/mattermost-preview:5.26.0
-    ports:
-      - 8065:8065
-    networks:
-      - default
-
-networks:
-  default:
-    driver: bridge

example/kubernetes-with-auto-discovery/gatus.yaml

@@ -1,109 +0,0 @@
-apiVersion: v1
-data:
-  config.yaml: |
-    kubernetes:
-      cluster-mode: "in"
-      auto-discover: true
-      excluded-service-suffixes:
-        - canary
-      service-template:
-        interval: 30s
-        conditions:
-          - "[STATUS] == 200"
-      namespaces:
-        - name: default
-          hostname-suffix: ".default.svc.cluster.local"
-          target-path: "/health"
-          excluded-services:
-            - gatus
-kind: ConfigMap
-metadata:
-  name: gatus
-  namespace: kube-system
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRole
-metadata:
-  name: gatus
-rules:
-  - apiGroups:
-      - ""
-    resources:
-      - services
-    verbs:
-      - list
-      - get
----
-apiVersion: v1
-automountServiceAccountToken: true
-kind: ServiceAccount
-metadata:
-  name: gatus
-  namespace: kube-system
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRoleBinding
-metadata:
-  name: gatus
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: gatus
-subjects:
-  - kind: ServiceAccount
-    name: gatus
-    namespace: kube-system
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: gatus
-  namespace: kube-system
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      k8s-app: gatus
-  template:
-    metadata:
-      labels:
-        k8s-app: gatus
-      name: gatus
-      namespace: kube-system
-    spec:
-      containers:
-        - image: twinproduction/gatus
-          imagePullPolicy: IfNotPresent
-          name: gatus
-          ports:
-            - containerPort: 8080
-              name: http
-              protocol: TCP
-          resources:
-            limits:
-              cpu: 250m
-              memory: 100M
-            requests:
-              cpu: 50m
-              memory: 30M
-          volumeMounts:
-            - mountPath: /config
-              name: gatus-config
-      volumes:
-        - configMap:
-            name: gatus
-          name: gatus-config
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: gatus
-  namespace: kube-system
-spec:
-  ports:
-    - name: http
-      port: 8080
-      protocol: TCP
-      targetPort: 8080
-  selector:
-    k8s-app: gatus

examples/docker-compose-grafana-prometheus/docker-compose.yml

@@ -0,0 +1,42 @@
+version: "3.9"
+services:
+  gatus:
+    container_name: gatus
+    image: twinproduction/gatus
+    restart: always
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./config.yaml:/config/config.yaml
+    networks:
+      - metrics
+
+  prometheus:
+    container_name: prometheus
+    image: prom/prometheus:v2.14.0
+    restart: always
+    command: --config.file=/etc/prometheus/prometheus.yml
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+    networks:
+      - metrics
+
+  grafana:
+    container_name: grafana
+    image: grafana/grafana:6.4.4
+    restart: always
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: secret
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./grafana/grafana.ini/:/etc/grafana/grafana.ini:ro
+      - ./grafana/provisioning/:/etc/grafana/provisioning/:ro
+    networks:
+      - metrics
+
+networks:
+  metrics:
+    driver: bridge

examples/docker-compose-mattermost/docker-compose.yml

@@ -0,0 +1,23 @@
+version: "3.9"
+services:
+  gatus:
+    container_name: gatus
+    image: twinproduction/gatus:latest
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./config.yaml:/config/config.yaml
+    networks:
+      - default
+
+  mattermost:
+    container_name: mattermost
+    image: mattermost/mattermost-preview:5.26.0
+    ports:
+      - "8065:8065"
+    networks:
+      - default
+
+networks:
+  default:
+    driver: bridge

examples/docker-compose-postgres-storage/config.yaml

@@ -0,0 +1,42 @@
+storage:
+  type: postgres
+  file: "postgres://username:password@postgres:5432/gatus?sslmode=disable"
+
+services:
+  - name: back-end
+    group: core
+    url: "https://example.org/"
+    interval: 5m
+    conditions:
+      - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
+
+  - name: monitoring
+    group: internal
+    url: "https://example.org/"
+    interval: 5m
+    conditions:
+      - "[STATUS] == 200"
+
+  - name: nas
+    group: internal
+    url: "https://example.org/"
+    interval: 5m
+    conditions:
+      - "[STATUS] == 200"
+
+  - name: example-dns-query
+    url: "8.8.8.8" # Address of the DNS server to use
+    interval: 5m
+    dns:
+      query-name: "example.com"
+      query-type: "A"
+    conditions:
+      - "[BODY] == 93.184.216.34"
+      - "[DNS_RCODE] == NOERROR"
+
+  - name: icmp-ping
+    url: "icmp://example.org"
+    interval: 1m
+    conditions:
+      - "[CONNECTED] == true"

examples/docker-compose-postgres-storage/docker-compose.yml

@@ -0,0 +1,29 @@
+version: "3.9"
+services:
+  postgres:
+    image: postgres
+    volumes:
+      - ./data/db:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    environment:
+      - POSTGRES_DB=gatus
+      - POSTGRES_USER=username
+      - POSTGRES_PASSWORD=password
+    networks:
+      - web
+
+  gatus:
+    image: twinproduction/gatus:latest
+    restart: always
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./config.yaml:/config/config.yaml
+    networks:
+      - web
+    depends_on:
+      - postgres
+
+networks:
+  web:

examples/docker-compose-sqlite-storage/config.yaml

@@ -0,0 +1,42 @@
+storage:
+  type: sqlite
+  file: /data/data.db
+
+services:
+  - name: back-end
+    group: core
+    url: "https://example.org/"
+    interval: 5m
+    conditions:
+      - "[STATUS] == 200"
+      - "[CERTIFICATE_EXPIRATION] > 48h"
+
+  - name: monitoring
+    group: internal
+    url: "https://example.org/"
+    interval: 5m
+    conditions:
+      - "[STATUS] == 200"
+
+  - name: nas
+    group: internal
+    url: "https://example.org/"
+    interval: 5m
+    conditions:
+      - "[STATUS] == 200"
+
+  - name: example-dns-query
+    url: "8.8.8.8" # Address of the DNS server to use
+    interval: 5m
+    dns:
+      query-name: "example.com"
+      query-type: "A"
+    conditions:
+      - "[BODY] == 93.184.216.34"
+      - "[DNS_RCODE] == NOERROR"
+
+  - name: icmp-ping
+    url: "icmp://example.org"
+    interval: 1m
+    conditions:
+      - "[CONNECTED] == true"

examples/docker-compose-sqlite-storage/docker-compose.yml

@@ -0,0 +1,9 @@
+version: "3.9"
+services:
+  gatus:
+    image: twinproduction/gatus:latest
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./config.yaml:/config/config.yaml
+      - ./data:/data/