Merge pull request #660 from vinaydawani/features/basic-docker-swarm

Support for docker swarm services

src/pages/api/docker/stats/[...service].js

@@ -14,7 +14,8 @@ export default async function handler(req, res) {
   }
 
   try {
-    const docker = new Docker(getDockerArguments(containerServer));
+    const dockerArgs = getDockerArguments(containerServer);
+    const docker = new Docker(dockerArgs.conn);
     const containers = await docker.listContainers({
       all: true,
     });
@@ -31,19 +32,45 @@ export default async function handler(req, res) {
     const containerNames = containers.map((container) => container.Names[0].replace(/^\//, ""));
     const containerExists = containerNames.includes(containerName);
 
-    if (!containerExists) {
-      res.status(200).send({
-        error: "not found",
+    if (containerExists) {
+      const container = docker.getContainer(containerName);
+      const stats = await container.stats({ stream: false });
+
+      res.status(200).json({
+        stats,
       });
       return;
     }
 
-    const container = docker.getContainer(containerName);
+    // Try with a service deployed in Docker Swarm, if enabled
+    if (dockerArgs.swarm) {
+      const tasks = await docker.listTasks({
+          filters: {
+            service: [containerName],
+            // A service can have several offline containers, so we only look for an active one.
+            "desired-state": ["running"],
+          },
+        })
+        .catch(() => []);
+
+      // For now we are only interested in the first one (in case replicas > 1).
+      // TODO: Show the result for all replicas/containers?
+      const taskContainerId = tasks.at(0)?.Status?.ContainerStatus?.ContainerID;
+
+      if (taskContainerId) {
+        const container = docker.getContainer(taskContainerId);
         const stats = await container.stats({ stream: false });
 
         res.status(200).json({
           stats,
         });
+        return;
+      }
+    }
+
+    res.status(200).send({
+      error: "not found",
+    });
   } catch {
     res.status(500).send({
       error: {message: "Unknown error"},

src/pages/api/docker/status/[...service].js

@@ -13,7 +13,8 @@ export default async function handler(req, res) {
   }
 
   try {
-    const docker = new Docker(getDockerArguments(containerServer));
+    const dockerArgs = getDockerArguments(containerServer);
+    const docker = new Docker(dockerArgs.conn);
     const containers = await docker.listContainers({
       all: true,
     });
@@ -29,18 +30,43 @@ export default async function handler(req, res) {
     const containerNames = containers.map((container) => container.Names[0].replace(/^\//, ""));
     const containerExists = containerNames.includes(containerName);
 
-    if (!containerExists) {
-      return res.status(200).send({
-        error: "not found",
+    if (containerExists) {
+      const container = docker.getContainer(containerName);
+      const info = await container.inspect();
+
+      return res.status(200).json({
+        status: info.State.Status,
+        health: info.State.Health?.Status,
       });
     }
 
-    const container = docker.getContainer(containerName);
+    if (dockerArgs.swarm) {
+      const tasks = await docker.listTasks({
+          filters: {
+            service: [containerName],
+            // A service can have several offline containers, we only look for an active one.
+            "desired-state": ["running"],
+          },
+        })
+        .catch(() => []);
+
+      // For now we are only interested in the first one (in case replicas > 1).
+      // TODO: Show the result for all replicas/containers?
+      const taskContainerId = tasks.at(0)?.Status?.ContainerStatus?.ContainerID;
+
+      if (taskContainerId) {
+        const container = docker.getContainer(taskContainerId);
         const info = await container.inspect();
 
         return res.status(200).json({
           status: info.State.Status,
-      health: info.State.Health?.Status
+          health: info.State.Health?.Status,
+        });
+      }
+    }
+
+    return res.status(200).send({
+      error: "not found",
     });
   } catch {
     return res.status(500).send({

src/utils/config/docker.js

@@ -22,11 +22,14 @@ export default function getDockerArguments(server) {
 
   if (servers[server]) {
     if (servers[server].socket) {
-      return { socketPath: servers[server].socket };
+      return { conn: { socketPath: servers[server].socket }, swarm: !!servers[server].swarm };
     }
 
     if (servers[server].host) {
-      return { host: servers[server].host, port: servers[server].port || null };
+      return {
+        conn: { host: servers[server].host, port: servers[server].port || null },
+        swarm: !!servers[server].swarm,
+      };
     }
 
     return servers[server];

src/utils/config/service-helpers.js

@@ -44,7 +44,7 @@ export async function servicesFromDocker() {
 
   const serviceServers = await Promise.all(
     Object.keys(servers).map(async (serverName) => {
-      const docker = new Docker(getDockerArguments(serverName));
+      const docker = new Docker(getDockerArguments(serverName).conn);
       const containers = await docker.listContainers({
         all: true,
       });