final mongodb fix

api/db.js

@@ -0,0 +1,34 @@
+import mongoose from 'mongoose'
+
+const postSchema = new mongoose.Schema({
+  title: String,
+  content: String,
+  author: String,
+  userId: String,
+  url: String,
+  encryptionEnabled: Boolean,
+  expireAt: Date
+}, { timestamps: true })
+
+export const Post = mongoose.model("Post", postSchema)
+
+let cachedDb = null
+
+console.log('outside-cachedDB:', cachedDb)
+async function connectToDatabase(uri) {
+  if (cachedDb) {
+    console.log('=> using cached database instance')
+    return cachedDb
+  }
+
+  const db = await mongoose.connect(uri, { useNewUrlParser: true })
+
+  console.log('New MongoDB Connected')
+
+  cachedDb = db
+  return db
+}
+
+export const mongoo =  async () => {
+  await connectToDatabase(process.env.MONGODB_URI)
+}

api/index.js

@@ -1,38 +1,30 @@
 import express from 'express'
-import mongoose from 'mongoose'
+import { mongoo, Post } from './db'
 import Joi from 'joi'
 import { slugify } from 'transliteration'
 import moment from 'moment'
 import bodyParser from 'body-parser'
 
-mongoose.connect(
-  `mongodb://${process.env.MONGODB_HOST}`,
-  {
-    useNewUrlParser: true,
-    useUnifiedTopology: true,
-    useFindAndModify: false,
-    useCreateIndex: true,
-    user: process.env.MONGODB_LOGIN,
-    pass: process.env.MONGODB_PASS, 
-    dbName: 'tinypaste',
-  },
-  err => { throw err; },
-);
+mongoo()
+
+// mongoose.connect(
+//   `mongodb://${process.env.MONGODB_HOST}`,
+//   {
+//     useNewUrlParser: true,
+//     useUnifiedTopology: true,
+//     useFindAndModify: false,
+//     useCreateIndex: true,
+//     user: process.env.MONGODB_LOGIN,
+//     pass: process.env.MONGODB_PASS, 
+//     dbName: 'tinypaste',
+//   },
+//   err => { throw err; },
+// )
 
 const app = express()
 
 //схема для постов
-const postSchema = new mongoose.Schema({
-  title: String,
-  content: String,
-  author: String,
-  userId: String,
-  url: String,
-  encryptionEnabled: Boolean,
-  expireAt: Date
-}, { timestamps: true })
-
-const Post = mongoose.model("Post", postSchema)
+
 const urlencodedParser = bodyParser.urlencoded({ extended: false })
 
 

now.json

@@ -10,8 +10,6 @@
     }
   ],
   "env": {
-    "MONGODB_HOST": "@mongodb_host",
-    "MONGODB_LOGIN": "@mongodb_login",
-    "MONGODB_PASS": "@mongodb_pass"
+    "MONGODB_URI": "@mongodb_uri"
   }
 }