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index.js
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index.js
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'use strict';
var path = require('path');
var nodeify = require('nodeify');
var mongodb_prebuilt = require('mongodb-prebuilt');
var mongodb = require('mongodb');
var uid = require('uid');
var fs = require('fs');
var rmrf = require('rimraf');
function MongoInMemory (port) {
this.databasePath = path.join(__dirname, '.data-' + uid());
this.serverEventEmitter = null;
this.host = '127.0.0.1';
this.port = port || 27017;
this.connections = {};
}
MongoInMemory.prototype.start = function (callback) {
return nodeify(new Promise(function (resolve, reject) {
fs.mkdirSync(this.databasePath);
this.serverEventEmitter = mongodb_prebuilt.start_server({
args: {
storageEngine: 'ephemeralForTest',
bind_ip: this.host,
port: this.port,
dbpath: this.databasePath
},
auto_shutdown: true
}, (error) => {
if (error) {
reject(error);
} else {
resolve({'host' : this.host, 'port' : this.port});
}
});
}.bind(this)), callback);
};
MongoInMemory.prototype.getMongouri = function (databaseName) {
return "mongodb://" + this.host + ":" + this.port + "/" + databaseName;
};
MongoInMemory.prototype.getConnection = function (databaseName, callback) {
return nodeify(new Promise(function (resolve, reject) {
if (this.connections[databaseName]) {
resolve(this.connections[databaseName]);
} else {
return mongodb.connect(this.getMongouri(databaseName)).then(function(connection) {
this.connections[databaseName] = connection;
resolve(connection);
}.bind(this));
}
}.bind(this)), callback);
};
MongoInMemory.prototype.getCollection = function (databaseName, collection, callback) {
return nodeify(new Promise(function (resolve, reject) {
return this.getConnection(databaseName).then(function (connection) {
resolve(connection.collection(collection));
});
}.bind(this)), callback);
};
MongoInMemory.prototype.addDocument = function (databaseName, collectionName, document, callback) {
return nodeify(new Promise(function (resolve, reject) {
return this.getCollection(databaseName, collectionName).then(function (collection) {
collection.insertOne(document, function (error, result) {
if (error) {
reject(error);
} else if (result.n === 0) {
reject(new Error("no document was actually saved in the database"));
} else {
resolve(result.ops[0]);
}
});
});
}.bind(this)), callback);
};
MongoInMemory.prototype.getDocument = function (databaseName, collectionName, documentId, callback) {
return nodeify(new Promise(function (resolve, reject) {
return this.getCollection(databaseName, collectionName).then(function (collection) {
resolve(collection.findOne({"_id": documentId}));
});
}.bind(this)), callback);
};
MongoInMemory.prototype.addDirectoryOfCollections = function (databaseName, collectionsPath, callback) {
return nodeify(new Promise(function (resolve, reject) {
this.getConnection(databaseName).then(function (connection) {
let documentsAdded = [];
let collections = fs.readdirSync(collectionsPath);
for (let collection of collections) {
var collectionPath = collectionsPath + "/" + collection;
if (fs.lstatSync(collectionPath).isDirectory()) {
let filenames = fs.readdirSync(collectionPath);
for (let filename of filenames) {
var documentPath = collectionPath + "/" + filename;
let document = JSON.parse(fs.readFileSync(documentPath, 'utf8'));
connection.collection(collection).insertOne(document);
documentsAdded.push(collection + "/" + filename);
}
}
}
resolve(documentsAdded);
});
}.bind(this)), callback);
};
MongoInMemory.prototype.stop = function (callback) {
return nodeify(new Promise(function (resolve, reject) {
if (this.serverEventEmitter) {
this.serverEventEmitter.emit('mongoShutdown');
this.serverEventEmitter = null;
}
Object.keys(this.connections).map(databaseName => {
this.connections[databaseName].close();
});
rmrf.sync(this.databasePath);
process.nextTick(() => resolve(null));
}.bind(this)), callback);
};
module.exports = MongoInMemory;