Run database migration (mongodb) with node.js

问题

I'm looking for a node module to make mongo database migrations. So far I found mongo-migrate, but not really powerful enough. (Better than nothing but I need more, I'm used to use the Ruby migration which was really powerful!)

I found another one few weeks ago, powerful but doesn't deal with mongoDb, only with MySQL, PostGre and so on.

Do you know a module or something that could help me? I mean, I'm not the first person to want to deal with DB migrations, how do you manage that? My project will be big and I need control.

Here an example of what I did so far:

*0010-init_category_table.js*

var mongodb = require('mongodb');

exports.up = function(db, next){

    var documentName = 'category';
    var collection = mongodb.Collection(db, documentName);
    var index;
    var indexOptions;

    /**
     * Create indexes.
     */
    index = { "code": 1 };
    indexOptions = { unique: true };
    collection.ensureIndex( index, {unique: true, w: 1}, function(error, data){
        console.log(error ? error : documentName + ': [ensureIndex] ' + JSON.stringify(index) + JSON.stringify(indexOptions));
    });

    index = { "name": 1 };
    indexOptions = { unique: true };
    collection.ensureIndex( index, {unique: true, w: 1}, function(error, data){
        console.log(error ? error : documentName + ': [ensureIndex] ' + JSON.stringify(index) + JSON.stringify(indexOptions));
    });

    /**
     * Create basic data.
     */
    collection.insert({
        code: 'a',
        name: 'languageStatus'
    }, {w: 1}, function(error, data){
        console.log(error ? error : documentName + ': [insert] ' + JSON.stringify(data));
    });
    collection.insert({
        code: 'b',
        name: 'accessName'
    }, {w: 1}, function(error, data){
        console.log(error ? error : documentName + ': [insert] ' + JSON.stringify(data));
    });
    collection.insert({
        code: 'c',
        name: 'roleName'
    }, {w: 1}, function(error, data){
        console.log(error ? error : documentName + ': [insert] ' + JSON.stringify(data));
    });
    collection.insert({
        code: 'd',
        name: 'translationStatus'
    }, {w: 1}, function(error, data){
        console.log(error ? error : documentName + ': [insert] ' + JSON.stringify(data));
    });

    /**
     * Display index information.
     */
    collection.indexInformation(function(error, data){
        console.log(error ? error : documentName + ': [indexes] ' + JSON.stringify(data));
    });

    next();
};

exports.down = function(db, next){
    var documentName = 'category';
    var document = mongodb.Collection(db, documentName);

    var query = {
        $or: [
            {name: 'languageStatus'},
            {name: 'accessName'},
            {name: 'roleName'},
            {name: 'translationStatus'}
        ]
    };
    document.find(query, function(error, data){
        data.each(function(error, data){
            document.remove(data, {w: 1}, function(error, number){
                console.log(error ? error : documentName + ': [remove] (' + number + ') ' + JSON.stringify(data));
            })
        });
    });

    next();
};

回答1:

I just developed this one: https://github.com/eberhara/mongration - you can also find on npm.

We needed a good node migration framework for mongodb, but could not find any - so we built one.

It has lots of better features than the regular migration frameworks:

Checksum (issues an error when a previosuly ran migration does not match its old version)
Persists migration state to mongo (there is no regular state file)
Full support to replica sets
Automatic handle rollbacks (developers must specify the rollback procedures)
Ability to run multiple migrations (sync or async) at the same time
Ability to run migrations against different databases at the same time

回答2:

Take a look at https://github.com/emirotin/mongodb-migrations it seems to be more feature rich, mature and maintained.

来源：https://stackoverflow.com/questions/21646153/run-database-migration-mongodb-with-node-js

标签

node.js

mongodb

database-migration