Allow using custom traefik middlewares from exoframe config

Addresses exoframejs/exoframe#278

Author: yamalight

src/docker/start.js

@@ -229,6 +229,17 @@ exports.start = async ({image, username, folder, resultStream, existing = []}) =
   }
   const additionalLabels = config.labels || {};
 
+  const configMiddlewares = Object.keys(additionalLabels)
+    // we want all middlewares
+    .filter(label => label.startsWith('traefik.http.middlewares.'))
+    // map them to name with @docker postfix
+    .map(label => {
+      const [middlewareName] = label.replace('traefik.http.middlewares.', '').split('.');
+      return `${middlewareName}@docker`;
+    })
+    // concat with other middlewares from config if present
+    .concat(config.middlewares || []);
+
   const Labels = Object.assign({}, additionalLabels, {
     'exoframe.deployment': name,
     'exoframe.user': username,
@@ -238,7 +249,7 @@ exports.start = async ({image, username, folder, resultStream, existing = []}) =
   });
 
   // create middlewares array
-  const middlewares = [];
+  const middlewares = configMiddlewares || [];
 
   // if we have letsencrypt enabled - enable https redirect
   if (serverConfig.letsencrypt && (config.letsencrypt || config.letsencrypt === undefined)) {
@@ -289,7 +300,7 @@ exports.start = async ({image, username, folder, resultStream, existing = []}) =
 
   // remove or stringify all middlewares
   if (middlewares.length > 0) {
-    Labels[`traefik.http.routers.${name}.middlewares`] = middlewares.join(',');
+    Labels[`traefik.http.routers.${name}.middlewares`] = [...new Set(middlewares)].join(',');
   }
 
   // run startFromParams via plugins if available

test/deploy.test.js

@@ -699,6 +699,12 @@ test('Should have additional labels', async done => {
   expect(containerInfo).toBeDefined();
   expect(containerInfo.Labels['custom.label']).toEqual('additional-label');
 
+  // check middlewares
+  const name = completeDeployments[0].Name.slice(1);
+  const middlewaresLabel = containerInfo.Labels[`traefik.http.routers.${name}.middlewares`];
+  expect(middlewaresLabel).toContain('my-redirectregex@docker');
+  expect(middlewaresLabel).toContain('my-test@docker');
+
   // cleanup
   const instance = docker.getContainer(containerInfo.Id);
   await instance.remove({force: true});

test/fixtures/additional-labels/exoframe.json

@@ -4,6 +4,9 @@
   "project": "simple-html",
   "restart": "no",
   "labels": {
-    "custom.label": "additional-label"
-  }
+    "custom.label": "additional-label",
+    "traefik.http.middlewares.my-redirectregex.redirectregex.regex": "^https://domain.redirect/(.*)",
+    "traefik.http.middlewares.my-redirectregex.redirectregex.replacement": "https://domain.new/$${1}"
+  },
+  "middlewares": ["my-test@docker"]
 }