Инициализация

server.js

@@ -0,0 +1,53 @@
+import express from 'express'
+import Docker from 'dockerode'
+
+const app = express()
+const PORT = 8080
+const docker = new Docker({ socketPath: '/var/run/docker.sock' })
+
+async function getServiceStatusCode(serviceName) {
+  try {
+    const service = docker.getService(serviceName)
+    const tasks = await service.tasks({ filters: { service: [serviceName] } })
+
+    if (tasks.length === 0) {
+      return 503
+    }
+
+    const isHealthy = tasks.some(task => {
+      const state = task.Status.State
+      const healthStatus = task.Status.ContainerStatus?.Health?.Status
+
+      if (healthStatus === 'healthy' || (state === 'running' && !healthStatus)) {
+        return true
+      }
+
+      return false
+    })
+
+    return isHealthy ? 200 : 503
+  } catch (error) {
+    if (error.statusCode === 404) {
+      return 404
+    }
+
+    return 503
+  }
+}
+
+app.get('/health/:service', async (req, res) => {
+  const service = req.params.service
+
+  if (!service || !/^[a-zA-Z0-9_-]+$/.test(service)) {
+    return res.sendStatus(400)
+  }
+
+  const statusCode = await getServiceStatusCode(service)
+  res.sendStatus(statusCode)
+})
+
+app.use((_, response) => response.sendStatus(404))
+
+app.listen(PORT, () => {
+  console.log(`Health Check Proxy listening on port ${PORT}`)
+})