feat: Graceful shutdown with git sync

Dockerfile

@@ -1,10 +1,10 @@
-FROM node:latest
+FROM node:6-alpine
 
 ENV WIKI_JS_DOCKER 1
 
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
-RUN yarn add wiki.js@latest
+RUN npm install wiki.js@latest
 
 EXPOSE 3000
 CMD [ "node", "server" ]

package.json

@@ -92,6 +92,7 @@
     "mongodb": "^2.2.26",
     "mongoose": "^4.9.9",
     "multer": "^1.3.0",
+    "node-graceful": "^0.2.3",
     "ora": "^1.2.0",
     "passport": "^0.3.2",
     "passport-azure-ad-oauth2": "0.0.4",

server/index.js

@@ -16,9 +16,9 @@ const IS_DEBUG = process.env.NODE_ENV === 'development'
 
 process.env.VIPS_WARNING = false
 
-if (IS_DEBUG) {
-  require('@glimpse/glimpse').init()
-}
+// if (IS_DEBUG) {
+//   require('@glimpse/glimpse').init()
+// }
 
 let appconf = require('./libs/config')()
 global.appconfig = appconf.config
@@ -62,6 +62,7 @@ const passport = require('passport')
 const passportSocketIo = require('passport.socketio')
 const session = require('express-session')
 const SessionMongoStore = require('connect-mongo')(session)
+const graceful = require('node-graceful')
 const socketio = require('socket.io')
 
 var mw = autoload(path.join(SERVERPATH, '/middlewares'))
@@ -257,6 +258,14 @@ bgAgent.on('message', m => {
   }
 })
 
-process.on('exit', (code) => {
-  bgAgent.disconnect()
+// ----------------------------------------
+// Graceful shutdown
+// ----------------------------------------
+
+graceful.on('exit', () => {
+  global.winston.info('- SHUTTING DOWN - Performing git sync...')
+  return global.git.resync().then(() => {
+    global.winston.info('- SHUTTING DOWN - Git sync successful. Now safe to exit.')
+    process.kill(process.pid, 'SIGINT')
+  })
 })

yarn.lock

@@ -4569,6 +4569,10 @@ node-abi@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.0.2.tgz#00f3e0a58100eb480133b48c99a32cc1f9e6c93e"
 
+node-graceful@^0.2.3:
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/node-graceful/-/node-graceful-0.2.3.tgz#ab120e1eed8c0c2b5e2ac874bf2754519c3fa942"
+
 node-gyp@^3.3.1:
   version "3.6.1"
   resolved "https://registry.yarnpkg.com/node-gyp/-/node-gyp-3.6.1.tgz#19561067ff185464aded478212681f47fd578cbc"