node-mongotools

This project provide 2 wrappers :

• mongodump,
• mongorestore.

This project also include dropbox integration feature to

• dump and upload onto dropbox,
• restore from a dropbox hosted mongo backup.

There is an autonomous feature called rotation that provide a backup file rotation mechanism

• remove N oldest deprecated backups.

This readme contains some samples. Other samples are under examples/.

Command line usage

Initial setup - first time only

# get source code
git clone https://github.com/boly38/node-mongotools.git
# install dependencies
npm install

#~ setup environment variables
cp env/initEnv.template.sh env/initEnv.dontpush.sh
# you must update env/initEnv.dontpush.sh

Set your preferences

# source your options
. ./env/initEnv.dontpush.sh

Basic feature

# create a mongo dump
node mt dump

# create a encrypted mongo dump
node mt dumpz

# list backups
node mt list

# restore a mongo local dump
# please note that mt restore use following options : dropBeforeRestore: true, deleteDumpAfterRestore: true
node mt restore backup/myDatabase__2020-11-08_150102.gz

# rotate backup files
node mt rotation

Dropbox feature

You have a dropbox access token in your preferences, (cf. "Mongo tools options")

# create a mongo dump is the same command
node mt dump
# restore a mongo dropbox dump 
node mt restore /backup/myDatabase__2020-11-08_150102.gz

# git bash for windows users having absolute path issue could use the following command
unalias node
MSYS_NO_PATHCONV=1 node mt restore /backup/myDatabase__2020-11-08_150102.gz

# rotate local and dropbox backup files
node mt rotation

Library use

Install dependency

You have to import as dependency

npm install node-mongotools

Define the requirements, example:

const { MongoTools, MTOptions } = require("node-mongotools")
var mongoTools = new MongoTools();
const mtOptions = {
        db: 'myDb',
        port: 17017,
        path: '/opt/myapp/backups',
        dropboxToken: process.env.MYAPP_DROPBOX_SECRET_TOKEN
      };

List dumps

var promiseResult = mongoTools.list(mtOptions);

Dump

var promiseResult = mongoTools.mongodump(mtOptions);

Restore

var promiseResult = mongoTools.mongorestore(mtOptions);

Rotation

var promiseResult = mongoTools.rotation(mtOptions);

Mongo tools options

Each mongotools feature rely on Mongo tools options (aka. MTOption).

Options precedence is the following:

• take options attribute if set,
• else take related environment variable if any,
• else take default value if any,
• else if it's a mandatory option, throw an error.

TIP: you could also show current options by doing:

console.log(new MTOptions());

shared options

These options are used by dump and restore.

Either uri or host/port/db:

option	env	required	default value	description
uri	MT_MONGO_URI	true	(none)	mongodump uri, example mongodb+srv://granted-user:[email protected]/tMyDatababse

or

option	env	required	default value	description
db	MT_MONGO_DB	true	(none)	mongo database name. For dump only, you could set it to '*' to dump all
host	MT_MONGO_HOST	false	127.0.0.1	mongo database hostname
port	MT_MONGO_PORT	false	27017	mongo database port
username	MT_MONGO_USER	false	(none)	mongo database username
password	MT_MONGO_PWD	false	(none)	mongo database password
authDb	MT_MONGO_AUTH_DB	false	admin	mongo auth database

mongodump options

option	env	required	default value	description
path	MT_PATH	false	backup	dump target directory, created if it doesn't exist
dumpCmd		false	mongodump	mongodump binary
fileName		false	<dbName_date_time.gz>	dump target filename
ssl		false	false	add --ssl option
encrypt		false	false	encrypt the dump using secret
secret	MT_SECRET	false	null	secret to use if encrypt is enabled
encryptSuffix		false	.enc	encrypt file suffix
includeCollections		false	(none)	Collections to include, if not specified all collections are included
excludeCollections		false	(none)	Collections to exclude, if not specified all collections are included

Simple example:

const { MongoTools, MTOptions } = require("node-mongotools")
var mongoTools = new MongoTools();

mongoTools.mongodump({ 
   db:'myDatabase',
   path:'backup',
   username:'root', password:'mypass', authDb:'admin'
})
.then((success) => console.info("success", success) )
.catch((err) => console.error("error", err) );

mongorestore options

option	env	required	default value	description
dumpFile	MT_DUMP_FILE	true	(none)	dump file to restore
restoreCmd		false	mongorestore	mongorestore binary
ssl		false	false	add --ssl option
dropBeforeRestore		false	false	set it to true to append --drop option
deleteDumpAfterRestore		false	false	set it to true to remove restored backup file
decrypt		false	false	decrypt the dump using secret. Activated if suffix is detected
secret	MT_SECRET	false	null	secret to use if decrypt is enabled

Simple example:

const { MongoTools, MTOptions } = require("node-mongotools")
var mongoTools = new MongoTools();

mongoTools.mongorestore({ 
   dumpFile:'backup/myDatabase__2020-11-8_160011.gz',
   username:'root', password:'mypass', authDb:'admin'
})
.then((success) => {
  console.info("success", success.message);
  if (success.stderr) {
    console.info("stderr:\n", success.stderr);// mongorestore binary write details on stderr
  }
})
.catch((err) => console.error("error", err) );

Dropbox options

You could create a dropbox app to get a token : cf. https://www.dropbox.com/developers/apps/ "Generated access token"

option	env	required	default value	description
dropboxToken	MT_DROPBOX_TOKEN	false	(none)	activate dropbox feature if present
dropboxLocalPath	MT_DROPBOX_LOCAL_PATH	false	"dropbox"	local directory to receive dropbox dump

When a token is set,

• the list feature will list the / + path dropbox directory
• the mongodump feature will upload the dump onto / + path dropbox directory (in addition to spawn it locally),
• the mongorestore feature will use dumpFile as dropbox dump location and retrieve it into dropboxLocalPath before doing the mongorestore action.

Rotation options

A safe time windows is defined by :

• now - rotationWindowsDays day(s) ===> now
  where backups can't be removed.

Backup out of safe time windows are called deprecated backup.

• rotationMinCount: minimum deprecated backups to keep,
• rotationCleanCount: number of (oldest) deprecated backups to delete.

option	env	required	default value	description
rotationDryMode	MT_ROTATION_DRY_MODE	false	false	dont do delete actions, just print it
rotationWindowsDays	MT_ROTATION_WINDOWS_DAYS	true	15	safe time windows in days since now
rotationMinCount	MT_ROTATION_MIN_COUNT	true	2	minimum deprecated backups to keep.
rotationCleanCount	MT_ROTATION_CLEAN_COUNT	true	10	number of (oldest first) deprecated backups to delete.

Simple example:

MT_ROTATION_CLEAN_COUNT=2 \
MT_ROTATION_DRY_MODE=true \
MT_ROTATION_WINDOWS_DAYS=3 \ node mt rotation

Example details: if there is a backup that is more than 3 days old, keep 2 newer ones and delete the 10 oldest.

Dropbox limits:

• rotation feature will not apply if dropbox backup target directory content contains more than 2000 files.

How to contribute

You're not a dev ? just submit an issue (bug, improvements, questions). Or else:

• Clone
• Install deps
• Then mocha tests

git clone https://github.com/boly38/node-mongotools.git
npm install
npm run test

• you could also fork, feature branch, then submit a pull request.

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