feat(app/web): add endpoint to stop instance

.github/workflows/ci.yml

@@ -217,11 +217,20 @@ jobs:
           use_mocked_data: yes
           verify: yes
 
+  # Deploy to metrics.lecoq.io
+  deploy-latest:
+    name: Deploy lowlighter/metrics@latest
+    runs-on: ubuntu-latest
+    needs: [ update-latest ]
+    steps:
+      - name: Deploy web instance
+        run: "curl -X POST -H 'Authorization: ${{ secrets.WEB_DEPLOY_TOKEN }}' https://metrics.lecoq.io/.control/stop"
+
   # Publish GitHub release
   publish-release:
     name: Publish release
     runs-on: ubuntu-latest
-    needs: [ action-latest-test ]
+    needs: [ action-latest-test, deploy-latest ]
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -237,13 +246,3 @@ jobs:
           GITHUB_TOKEN: ${{ github.token }}
           GITHUB_REPOSITORY: ${{ github.repository }}
           GITHUB_COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
-
-  # Deploy to metrics.lecoq.io
-  deploy-latest:
-    name: Deploy lowlighter/metrics@latest
-    runs-on: ubuntu-latest
-    needs: [ action-latest-test ]
-    if: contains(github.event.head_commit.message, '[deploy]')
-    steps:
-      - name: Deploy web instance
-        run: "curl -H 'Content-Type: application/json' --data '${{ secrets.WEB_DEPLOY_TOKEN }}' -X POST https://deploy.metrics.lecoq.io"

source/app/web/instance.mjs

@@ -399,6 +399,24 @@ export default async function({sandbox = false} = {}) {
     app.get("/embed/*", (req, res) => res.status(405).send("Method not allowed: this endpoint is not available"))
   }
 
+  //Control endpoints
+  if ((conf.settings.control?.token)&&(conf.settings.control.token)) {
+    const middleware = (req, res, next) => {
+      console.log(`metrics/app/control > ${req.method} > ${req.url}`)
+      if (req.headers.authorization === conf.settings.control.token) {
+        next()
+        return
+      }
+      return res.status(401).send("Unauthorized: invalid token")
+    }
+    app.post("/.control/stop", limiter, middleware, async (req, res) => {
+      console.debug("metrics/app/control > instance will be stopped in a few seconds")
+      res.status(202).send("Accepted: instance will be stopped in a few seconds")
+      await new Promise(resolve => setTimeout(resolve, 5000))
+      process.exit(1)
+    })
+  }
+
   //Listen
   app.listen(port, () =>
     console.log([

source/app/web/settings.example.json

@@ -20,6 +20,9 @@
     "by": "",                           "//": "Web instance host (displayed in footer)",
     "link": "",                         "//": "Web instance host link (displayed in footer)"
   },
+  "control":{
+    "token": null,                      "//": "Control token (can be used by external services to perform actions on instance, such as stopping it for redeploys)"
+  },
   "community": {
     "templates": [],                    "//": "Additional community templates to setup"
   },