feat(db backup): script to take db backups (#168)

* feat(db-backup): rebase

fe 126

* feat(db-backup): rebase

* feat(db-backup): rebase

* feat(db-backup): create modules to take backup and delete backups older than a week

fe #126

* feat(db-backup): ammendments

fe #126

* feat(db-backup): ammendments after review

fe #126

scripts/db.js

@@ -0,0 +1,68 @@
+require('dotenv').config({ path: __dirname + '/../.env' })
+const { exec } = require('child_process')
+const fs = require('fs')
+const path = require('path')
+
+const backup = path => {
+  if (!path) {
+    console.error(
+      'Usage:\tnode  -e \'require("./db.js").backup("/path/to/store/backup/file")',
+    )
+    process.exit(1)
+  }
+
+  const fileName = `${path}/${new Date()
+    .toISOString()
+    .replace(/T/, '_')
+    .replace(/\..+/, '')}_standup_db_backup.archive`
+
+  const command = `docker exec standup-mongo-db sh -c "exec mongodump -u ${process.env.DB_USERNAME} -p ${process.env.DB_PASSWORD} -d ${process.env.DB_NAME} --archive" > ${fileName}`
+
+  exec(command, err => {
+    if (err) {
+      console.error(err)
+    }
+  })
+}
+
+const deleteOldBackups = filePath => {
+  if (!filePath) {
+    console.error(
+      'Usage:\tnode  -e \'require("./db.js").deleteOldBackups("/path/to/store/backup/file")',
+    )
+    process.exit(1)
+  }
+
+  fs.readdir(filePath, function (err, files) {
+    if (err) {
+      console.error(err)
+      return
+    }
+
+    files.forEach(fileName => {
+      if (!fileName.includes('.archive')) {
+        return
+      }
+
+      fs.stat(path.join(filePath, fileName), function (err, stat) {
+        if (err) {
+          return console.error(err)
+        }
+
+        const now = new Date().getTime()
+        const oneWeek = new Date(stat.ctime).getTime() + 604800000
+
+        if (now > oneWeek) {
+          return fs.unlink(path.join(filePath, fileName), function (err) {
+            if (err) {
+              return console.error(err)
+            }
+            console.log('successfully deleted')
+          })
+        }
+      })
+    })
+  })
+}
+
+module.exports = { backup, deleteOldBackups }