"use strict";
var EventEmitter = require('events').EventEmitter
, inherits = require('util').inherits
, CServer = require('mongodb-core').Server
, Cursor = require('./cursor')
, AggregationCursor = require('./aggregation_cursor')
, CommandCursor = require('./command_cursor')
, f = require('util').format
, ServerCapabilities = require('./topology_base').ServerCapabilities
, Store = require('./topology_base').Store
, Define = require('./metadata')
, MongoError = require('mongodb-core').MongoError
, MAX_JS_INT = require('./utils').MAX_JS_INT
, translateOptions = require('./utils').translateOptions
, filterOptions = require('./utils').filterOptions
, mergeOptions = require('./utils').mergeOptions
, getReadPreference = require('./utils').getReadPreference
, os = require('os');
// Get package.json variable
var driverVersion = require('../package.json').version;
var nodejsversion = f('Node.js %s, %s', process.version, os.endianness());
var type = os.type();
var name = process.platform;
var architecture = process.arch;
var release = os.release();
/**
* @fileOverview The **Server** class is a class that represents a single server topology and is
* used to construct connections.
*
* **Server Should not be used, use MongoClient.connect**
* @example
* var Db = require('mongodb').Db,
* Server = require('mongodb').Server,
* test = require('assert');
* // Connect using single Server
* var db = new Db('test', new Server('localhost', 27017););
* db.open(function(err, db) {
* // Get an additional db
* db.close();
* });
*/
// Allowed parameters
var legalOptionNames = ['ha', 'haInterval', 'acceptableLatencyMS'
, 'poolSize', 'ssl', 'checkServerIdentity', 'sslValidate'
, 'sslCA', 'sslCRL', 'sslCert', 'sslKey', 'sslPass', 'socketOptions', 'bufferMaxEntries'
, 'store', 'auto_reconnect', 'autoReconnect', 'emitError'
, 'keepAlive', 'noDelay', 'connectTimeoutMS', 'socketTimeoutMS', 'family'
, 'loggerLevel', 'logger', 'reconnectTries', 'reconnectInterval', 'monitoring'
, 'appname', 'domainsEnabled'
, 'servername', 'promoteLongs', 'promoteValues', 'promoteBuffers'];
/**
* Creates a new Server instance
* @class
* @deprecated
* @param {string} host The host for the server, can be either an IP4, IP6 or domain socket style host.
* @param {number} [port] The server port if IP4.
* @param {object} [options=null] Optional settings.
* @param {number} [options.poolSize=5] Number of connections in the connection pool for each server instance, set to 5 as default for legacy reasons.
* @param {boolean} [options.ssl=false] Use ssl connection (needs to have a mongod server with ssl support)
* @param {object} [options.sslValidate=true] Validate mongod server certificate against ca (needs to have a mongod server with ssl support, 2.4 or higher)
* @param {boolean|function} [options.checkServerIdentity=true] Ensure we check server identify during SSL, set to false to disable checking. Only works for Node 0.12.x or higher. You can pass in a boolean or your own checkServerIdentity override function.
* @param {array} [options.sslCA=null] Array of valid certificates either as Buffers or Strings (needs to have a mongod server with ssl support, 2.4 or higher)
* @param {array} [options.sslCRL=null] Array of revocation certificates either as Buffers or Strings (needs to have a mongod server with ssl support, 2.4 or higher)
* @param {(Buffer|string)} [options.sslCert=null] String or buffer containing the certificate we wish to present (needs to have a mongod server with ssl support, 2.4 or higher)
* @param {(Buffer|string)} [options.sslKey=null] String or buffer containing the certificate private key we wish to present (needs to have a mongod server with ssl support, 2.4 or higher)
* @param {(Buffer|string)} [options.sslPass=null] String or buffer containing the certificate password (needs to have a mongod server with ssl support, 2.4 or higher)
* @param {string} [options.servername=null] String containing the server name requested via TLS SNI.
* @param {boolean} [options.autoReconnect=true] Reconnect on error or timeout.
* @param {object} [options.socketOptions=null] Socket options
* @param {boolean} [options.socketOptions.noDelay=true] TCP Socket NoDelay option.
* @param {number} [options.socketOptions.keepAlive=0] TCP KeepAlive on the socket with a X ms delay before start.
* @param {number} [options.socketOptions.connectTimeoutMS=0] TCP Connection timeout setting
* @param {number} [options.socketOptions.socketTimeoutMS=0] TCP Socket timeout setting
* @param {number} [options.reconnectTries=30] Server attempt to reconnect #times
* @param {number} [options.reconnectInterval=1000] Server will wait # milliseconds between retries
* @param {number} [options.monitoring=true] Triggers the server instance to call ismaster
* @param {number} [options.haInterval=10000] The interval of calling ismaster when monitoring is enabled.
* @param {boolean} [options.domainsEnabled=false] Enable the wrapping of the callback in the current domain, disabled by default to avoid perf hit.
* @fires Server#connect
* @fires Server#close
* @fires Server#error
* @fires Server#timeout
* @fires Server#parseError
* @fires Server#reconnect
* @property {string} parserType the parser type used (c++ or js).
* @return {Server} a Server instance.
*/
var Server = function(host, port, options) {
options = options || {};
if(!(this instanceof Server)) return new Server(host, port, options);
EventEmitter.call(this);
var self = this;
// Filter the options
options = filterOptions(options, legalOptionNames);
// Stored options
var storeOptions = {
force: false
, bufferMaxEntries: typeof options.bufferMaxEntries == 'number' ? options.bufferMaxEntries : MAX_JS_INT
}
// Shared global store
var store = options.store || new Store(self, storeOptions);
// Detect if we have a socket connection
if(host.indexOf('\/') != -1) {
if(port != null && typeof port == 'object') {
options = port;
port = null;
}
} else if(port == null) {
throw MongoError.create({message: 'port must be specified', driver:true});
}
// Get the reconnect option
var reconnect = typeof options.auto_reconnect == 'boolean' ? options.auto_reconnect : true;
reconnect = typeof options.autoReconnect == 'boolean' ? options.autoReconnect : reconnect;
// Clone options
var clonedOptions = mergeOptions({}, {
host: host, port: port, disconnectHandler: store,
cursorFactory: Cursor,
reconnect: reconnect,
emitError: typeof options.emitError == 'boolean' ? options.emitError : true,
size: typeof options.poolSize == 'number' ? options.poolSize : 5
});
// Translate any SSL options and other connectivity options
clonedOptions = translateOptions(clonedOptions, options);
// Socket options
var socketOptions = options.socketOptions && Object.keys(options.socketOptions).length > 0
? options.socketOptions : options;
// Translate all the options to the mongodb-core ones
clonedOptions = translateOptions(clonedOptions, socketOptions);
if(typeof clonedOptions.keepAlive == 'number') {
clonedOptions.keepAliveInitialDelay = clonedOptions.keepAlive;
clonedOptions.keepAlive = clonedOptions.keepAlive > 0;
}
// Build default client information
this.clientInfo = {
driver: {
name: "nodejs",
version: driverVersion
},
os: {
type: type,
name: name,
architecture: architecture,
version: release
},
platform: nodejsversion
}
// Build default client information
clonedOptions.clientInfo = this.clientInfo;
// Do we have an application specific string
if(options.appname) {
clonedOptions.clientInfo.application = { name: options.appname };
}
// Create an instance of a server instance from mongodb-core
var server = new CServer(clonedOptions);
// Define the internal properties
this.s = {
// Create an instance of a server instance from mongodb-core
server: server
// Server capabilities
, sCapabilities: null
// Cloned options
, clonedOptions: clonedOptions
// Reconnect
, reconnect: clonedOptions.reconnect
// Emit error
, emitError: clonedOptions.emitError
// Pool size
, poolSize: clonedOptions.size
// Store Options
, storeOptions: storeOptions
// Store
, store: store
// Host
, host: host
// Port
, port: port
// Options
, options: options
}
}
inherits(Server, EventEmitter);
var define = Server.define = new Define('Server', Server, false);
// BSON property
Object.defineProperty(Server.prototype, 'bson', {
enumerable: true, get: function() {
return this.s.server.s.bson;
}
});
// Last ismaster
Object.defineProperty(Server.prototype, 'isMasterDoc', {
enumerable:true, get: function() {
return this.s.server.lastIsMaster();
}
});
Object.defineProperty(Server.prototype, 'parserType', {
enumerable:true, get: function() {
return this.s.server.parserType;
}
});
// Last ismaster
Object.defineProperty(Server.prototype, 'poolSize', {
enumerable:true, get: function() { return this.s.server.connections().length; }
});
Object.defineProperty(Server.prototype, 'autoReconnect', {
enumerable:true, get: function() { return this.s.reconnect; }
});
Object.defineProperty(Server.prototype, 'host', {
enumerable:true, get: function() { return this.s.host; }
});
Object.defineProperty(Server.prototype, 'port', {
enumerable:true, get: function() { return this.s.port; }
});
// Connect
Server.prototype.connect = function(db, _options, callback) {
var self = this;
if('function' === typeof _options) callback = _options, _options = {};
if(_options == null) _options = {};
if(!('function' === typeof callback)) callback = null;
self.s.options = _options;
// Update bufferMaxEntries
self.s.storeOptions.bufferMaxEntries = db.bufferMaxEntries;
// Error handler
var connectErrorHandler = function() {
return function(err) {
// Remove all event handlers
var events = ['timeout', 'error', 'close'];
events.forEach(function(e) {
self.s.server.removeListener(e, connectHandlers[e]);
});
self.s.server.removeListener('connect', connectErrorHandler);
// Try to callback
try {
callback(err);
} catch(err) {
process.nextTick(function() { throw err; })
}
}
}
// Actual handler
var errorHandler = function(event) {
return function(err) {
if(event != 'error') {
self.emit(event, err);
}
}
}
// Error handler
var reconnectHandler = function() {
self.emit('reconnect', self);
self.s.store.execute();
}
// Reconnect failed
var reconnectFailedHandler = function(err) {
self.emit('reconnectFailed', err);
self.s.store.flush(err);
}
// Destroy called on topology, perform cleanup
var destroyHandler = function() {
self.s.store.flush();
}
// relay the event
var relay = function(event) {
return function(t, server) {
self.emit(event, t, server);
}
}
// Connect handler
var connectHandler = function() {
// Clear out all the current handlers left over
["timeout", "error", "close", 'destroy'].forEach(function(e) {
self.s.server.removeAllListeners(e);
});
// Set up listeners
self.s.server.on('timeout', errorHandler('timeout'));
self.s.server.once('error', errorHandler('error'));
self.s.server.on('close', errorHandler('close'));
// Only called on destroy
self.s.server.on('destroy', destroyHandler);
// Emit open event
self.emit('open', null, self);
// Return correctly
try {
callback(null, self);
} catch(err) {
console.log(err.stack)
process.nextTick(function() { throw err; })
}
}
// Set up listeners
var connectHandlers = {
timeout: connectErrorHandler('timeout'),
error: connectErrorHandler('error'),
close: connectErrorHandler('close')
};
// Clear out all the current handlers left over
["timeout", "error", "close", 'serverOpening', 'serverDescriptionChanged', 'serverHeartbeatStarted',
'serverHeartbeatSucceeded', 'serverHeartbeatFailed', 'serverClosed', 'topologyOpening',
'topologyClosed', 'topologyDescriptionChanged'].forEach(function(e) {
self.s.server.removeAllListeners(e);
});
// Add the event handlers
self.s.server.once('timeout', connectHandlers.timeout);
self.s.server.once('error', connectHandlers.error);
self.s.server.once('close', connectHandlers.close);
self.s.server.once('connect', connectHandler);
// Reconnect server
self.s.server.on('reconnect', reconnectHandler);
self.s.server.on('reconnectFailed', reconnectFailedHandler);
// Set up SDAM listeners
self.s.server.on('serverDescriptionChanged', relay('serverDescriptionChanged'));
self.s.server.on('serverHeartbeatStarted', relay('serverHeartbeatStarted'));
self.s.server.on('serverHeartbeatSucceeded', relay('serverHeartbeatSucceeded'));
self.s.server.on('serverHeartbeatFailed', relay('serverHeartbeatFailed'));
self.s.server.on('serverOpening', relay('serverOpening'));
self.s.server.on('serverClosed', relay('serverClosed'));
self.s.server.on('topologyOpening', relay('topologyOpening'));
self.s.server.on('topologyClosed', relay('topologyClosed'));
self.s.server.on('topologyDescriptionChanged', relay('topologyDescriptionChanged'));
self.s.server.on('attemptReconnect', relay('attemptReconnect'));
self.s.server.on('monitoring', relay('monitoring'));
// Start connection
self.s.server.connect(_options);
}
// Server capabilities
Server.prototype.capabilities = function() {
if(this.s.sCapabilities) return this.s.sCapabilities;
if(this.s.server.lastIsMaster() == null) return null;
this.s.sCapabilities = new ServerCapabilities(this.s.server.lastIsMaster());
return this.s.sCapabilities;
}
define.classMethod('capabilities', {callback: false, promise:false, returns: [ServerCapabilities]});
// Command
Server.prototype.command = function(ns, cmd, options, callback) {
this.s.server.command(ns, cmd, getReadPreference(options), callback);
}
define.classMethod('command', {callback: true, promise:false});
// Insert
Server.prototype.insert = function(ns, ops, options, callback) {
this.s.server.insert(ns, ops, options, callback);
}
define.classMethod('insert', {callback: true, promise:false});
// Update
Server.prototype.update = function(ns, ops, options, callback) {
this.s.server.update(ns, ops, options, callback);
}
define.classMethod('update', {callback: true, promise:false});
// Remove
Server.prototype.remove = function(ns, ops, options, callback) {
this.s.server.remove(ns, ops, options, callback);
}
define.classMethod('remove', {callback: true, promise:false});
// IsConnected
Server.prototype.isConnected = function() {
return this.s.server.isConnected();
}
Server.prototype.isDestroyed = function() {
return this.s.server.isDestroyed();
}
define.classMethod('isConnected', {callback: false, promise:false, returns: [Boolean]});
// Insert
Server.prototype.cursor = function(ns, cmd, options) {
options.disconnectHandler = this.s.store;
return this.s.server.cursor(ns, cmd, options);
}
define.classMethod('cursor', {callback: false, promise:false, returns: [Cursor, AggregationCursor, CommandCursor]});
Server.prototype.lastIsMaster = function() {
return this.s.server.lastIsMaster();
}
/**
* Unref all sockets
* @method
*/
Server.prototype.unref = function() {
this.s.server.unref();
}
Server.prototype.close = function(forceClosed) {
this.s.server.destroy();
// We need to wash out all stored processes
if(forceClosed == true) {
this.s.storeOptions.force = forceClosed;
this.s.store.flush();
}
}
define.classMethod('close', {callback: false, promise:false});
Server.prototype.auth = function() {
var args = Array.prototype.slice.call(arguments, 0);
this.s.server.auth.apply(this.s.server, args);
}
define.classMethod('auth', {callback: true, promise:false});
Server.prototype.logout = function() {
var args = Array.prototype.slice.call(arguments, 0);
this.s.server.logout.apply(this.s.server, args);
}
define.classMethod('logout', {callback: true, promise:false});
/**
* All raw connections
* @method
* @return {array}
*/
Server.prototype.connections = function() {
return this.s.server.connections();
}
define.classMethod('connections', {callback: false, promise:false, returns:[Array]});
/**
* Server connect event
*
* @event Server#connect
* @type {object}
*/
/**
* Server close event
*
* @event Server#close
* @type {object}
*/
/**
* Server reconnect event
*
* @event Server#reconnect
* @type {object}
*/
/**
* Server error event
*
* @event Server#error
* @type {MongoError}
*/
/**
* Server timeout event
*
* @event Server#timeout
* @type {object}
*/
/**
* Server parseError event
*
* @event Server#parseError
* @type {object}
*/
module.exports = Server;