implement docker host details page

server/src/service/network/DockerProvider.ts

@@ -100,7 +100,7 @@ export class DockerProvider implements IStatusProvider<DockerStatusPayload> {
 		const systemDelta = stats.cpu_stats.system_cpu_usage - (stats.precpu_stats.system_cpu_usage ?? 0);
 		const onlineCpus = stats.cpu_stats.online_cpus ?? stats.cpu_stats.cpu_usage.percpu_usage?.length ?? 1;
 		if (!(systemDelta > 0) || cpuDelta < 0) return 0;
-		return (cpuDelta / systemDelta) * onlineCpus * 100;
+		return (cpuDelta / systemDelta) * onlineCpus;
 	}
 
 	private computeMemory(stats: Dockerode.ContainerStats): Pick<DockerContainerInfo, "memoryUsedBytes" | "memoryLimitBytes" | "memoryPct"> {
@@ -111,7 +111,7 @@ export class DockerProvider implements IStatusProvider<DockerStatusPayload> {
 		return {
 			memoryUsedBytes,
 			memoryLimitBytes,
-			memoryPct: memoryLimitBytes > 0 ? (memoryUsedBytes / memoryLimitBytes) * 100 : 0,
+			memoryPct: memoryLimitBytes > 0 ? memoryUsedBytes / memoryLimitBytes : 0,
 		};
 	}
 

server/src/types/network.ts

@@ -117,10 +117,10 @@ export interface DockerContainerInfo {
 	state: DockerContainerState;
 	status: string;
 	health: DockerHealthStatus;
-	cpuPct?: number;
+	cpuPct?: number; // fraction of one core (docker stats convention / 100); exceeds 1 when using multiple cores
 	memoryUsedBytes?: number;
 	memoryLimitBytes?: number;
-	memoryPct?: number;
+	memoryPct?: number; // 0-1 fraction of the memory limit
 	restartCount?: number;
 	startedAt?: string; // ISO date
 }

server/test/unit/providers/network/dockerProvider.test.ts

@@ -324,10 +324,10 @@ describe("DockerProvider", () => {
 			const result = await provider.handle(makeMonitor());
 			const container = result.payload?.containers[0];
 
-			expect(container?.cpuPct).toBeCloseTo(80);
+			expect(container?.cpuPct).toBeCloseTo(0.8);
 			expect(container?.memoryUsedBytes).toBe(200 * 1024 * 1024);
 			expect(container?.memoryLimitBytes).toBe(1024 * 1024 * 1024);
-			expect(container?.memoryPct).toBeCloseTo(19.53125);
+			expect(container?.memoryPct).toBeCloseTo(0.1953125);
 		});
 
 		it("falls back to the cgroup v1 cache field for page cache", async () => {
@@ -351,7 +351,7 @@ describe("DockerProvider", () => {
 
 			const result = await provider.handle(makeMonitor());
 
-			expect(result.payload?.containers[0]?.cpuPct).toBeCloseTo(40);
+			expect(result.payload?.containers[0]?.cpuPct).toBeCloseTo(0.4);
 		});
 
 		it("returns 0 cpu when the system delta is not positive", async () => {