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author | 2017-08-07 11:39:39 +0800 | |
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committer | 2017-08-07 11:39:39 +0800 | |
commit | 21d72c4a80fe2937d0c4ddd20624b27adbcd989b (patch) | |
tree | e5013ee12f74f8452e01cbff16e7b0158bc456cb /common/src/main/webapp/usageguide/appserver/node_modules/mongoose/lib/connection.js | |
parent | f533e73e2ae32e010b16abdcf7985abaf31ab843 (diff) |
Upload the ESR GUI seed code
Issue-ID: AAI-68
Change-Id: Ia50ce0570c2fabecd77199d4e8454f56fe587c4e
Signed-off-by: lizi00164331 <li.zi30@zte.com.cn>
Diffstat (limited to 'common/src/main/webapp/usageguide/appserver/node_modules/mongoose/lib/connection.js')
-rw-r--r-- | common/src/main/webapp/usageguide/appserver/node_modules/mongoose/lib/connection.js | 854 |
1 files changed, 854 insertions, 0 deletions
diff --git a/common/src/main/webapp/usageguide/appserver/node_modules/mongoose/lib/connection.js b/common/src/main/webapp/usageguide/appserver/node_modules/mongoose/lib/connection.js new file mode 100644 index 0000000..69c470a --- /dev/null +++ b/common/src/main/webapp/usageguide/appserver/node_modules/mongoose/lib/connection.js @@ -0,0 +1,854 @@ +/*! + * Module dependencies. + */ + +var utils = require('./utils'); +var EventEmitter = require('events').EventEmitter; +var driver = global.MONGOOSE_DRIVER_PATH || './drivers/node-mongodb-native'; +var Schema = require('./schema'); +var Collection = require(driver + '/collection'); +var STATES = require('./connectionstate'); +var MongooseError = require('./error'); +var muri = require('muri'); +var PromiseProvider = require('./promise_provider'); + +/*! + * Protocol prefix regexp. + * + * @api private + */ + +var rgxProtocol = /^(?:.)+:\/\//; + +/*! + * A list of authentication mechanisms that don't require a password for authentication. + * This is used by the authMechanismDoesNotRequirePassword method. + * + * @api private + */ +var authMechanismsWhichDontRequirePassword = [ + 'MONGODB-X509' +]; + +/** + * Connection constructor + * + * For practical reasons, a Connection equals a Db. + * + * @param {Mongoose} base a mongoose instance + * @inherits NodeJS EventEmitter http://nodejs.org/api/events.html#events_class_events_eventemitter + * @event `connecting`: Emitted when `connection.{open,openSet}()` is executed on this connection. + * @event `connected`: Emitted when this connection successfully connects to the db. May be emitted _multiple_ times in `reconnected` scenarios. + * @event `open`: Emitted after we `connected` and `onOpen` is executed on all of this connections models. + * @event `disconnecting`: Emitted when `connection.close()` was executed. + * @event `disconnected`: Emitted after getting disconnected from the db. + * @event `close`: Emitted after we `disconnected` and `onClose` executed on all of this connections models. + * @event `reconnected`: Emitted after we `connected` and subsequently `disconnected`, followed by successfully another successfull connection. + * @event `error`: Emitted when an error occurs on this connection. + * @event `fullsetup`: Emitted in a replica-set scenario, when primary and at least one seconaries specified in the connection string are connected. + * @event `all`: Emitted in a replica-set scenario, when all nodes specified in the connection string are connected. + * @api public + */ + +function Connection(base) { + this.base = base; + this.collections = {}; + this.models = {}; + this.config = {autoIndex: true}; + this.replica = false; + this.hosts = null; + this.host = null; + this.port = null; + this.user = null; + this.pass = null; + this.name = null; + this.options = null; + this.otherDbs = []; + this._readyState = STATES.disconnected; + this._closeCalled = false; + this._hasOpened = false; +} + +/*! + * Inherit from EventEmitter + */ + +Connection.prototype.__proto__ = EventEmitter.prototype; + +/** + * Connection ready state + * + * - 0 = disconnected + * - 1 = connected + * - 2 = connecting + * - 3 = disconnecting + * + * Each state change emits its associated event name. + * + * ####Example + * + * conn.on('connected', callback); + * conn.on('disconnected', callback); + * + * @property readyState + * @api public + */ + +Object.defineProperty(Connection.prototype, 'readyState', { + get: function() { + return this._readyState; + }, + set: function(val) { + if (!(val in STATES)) { + throw new Error('Invalid connection state: ' + val); + } + + if (this._readyState !== val) { + this._readyState = val; + // loop over the otherDbs on this connection and change their state + for (var i = 0; i < this.otherDbs.length; i++) { + this.otherDbs[i].readyState = val; + } + + if (STATES.connected === val) { + this._hasOpened = true; + } + + this.emit(STATES[val]); + } + } +}); + +/** + * A hash of the collections associated with this connection + * + * @property collections + */ + +Connection.prototype.collections; + +/** + * The mongodb.Db instance, set when the connection is opened + * + * @property db + */ + +Connection.prototype.db; + +/** + * A hash of the global options that are associated with this connection + * + * @property config + */ + +Connection.prototype.config; + +/** + * Opens the connection to MongoDB. + * + * `options` is a hash with the following possible properties: + * + * config - passed to the connection config instance + * db - passed to the connection db instance + * server - passed to the connection server instance(s) + * replset - passed to the connection ReplSet instance + * user - username for authentication + * pass - password for authentication + * auth - options for authentication (see http://mongodb.github.com/node-mongodb-native/api-generated/db.html#authenticate) + * + * ####Notes: + * + * Mongoose forces the db option `forceServerObjectId` false and cannot be overridden. + * Mongoose defaults the server `auto_reconnect` options to true which can be overridden. + * See the node-mongodb-native driver instance for options that it understands. + * + * _Options passed take precedence over options included in connection strings._ + * + * @param {String} connection_string mongodb://uri or the host to which you are connecting + * @param {String} [database] database name + * @param {Number} [port] database port + * @param {Object} [options] options + * @param {Function} [callback] + * @see node-mongodb-native https://github.com/mongodb/node-mongodb-native + * @see http://mongodb.github.com/node-mongodb-native/api-generated/db.html#authenticate + * @api public + */ + +Connection.prototype.open = function(host, database, port, options, callback) { + var parsed; + var Promise = PromiseProvider.get(); + + if (typeof database === 'string') { + switch (arguments.length) { + case 2: + port = 27017; + break; + case 3: + switch (typeof port) { + case 'function': + callback = port; + port = 27017; + break; + case 'object': + options = port; + port = 27017; + break; + } + break; + case 4: + if (typeof options === 'function') { + callback = options; + options = {}; + } + } + } else { + switch (typeof database) { + case 'function': + callback = database; + database = undefined; + break; + case 'object': + options = database; + database = undefined; + callback = port; + break; + } + + if (!rgxProtocol.test(host)) { + host = 'mongodb://' + host; + } + + try { + parsed = muri(host); + } catch (err) { + this.error(err, callback); + return this; + } + + database = parsed.db; + host = parsed.hosts[0].host || parsed.hosts[0].ipc; + port = parsed.hosts[0].port || 27017; + } + + this.options = this.parseOptions(options, parsed && parsed.options); + + // make sure we can open + if (STATES.disconnected !== this.readyState) { + var err = new Error('Trying to open unclosed connection.'); + err.state = this.readyState; + this.error(err, callback); + return new Promise.ES6(function(resolve, reject) { + reject(err); + }); + } + + if (!host) { + this.error(new Error('Missing hostname.'), callback); + return new Promise.ES6(function(resolve, reject) { + reject(err); + }); + } + + if (!database) { + this.error(new Error('Missing database name.'), callback); + return new Promise.ES6(function(resolve, reject) { + reject(err); + }); + } + + // authentication + if (this.optionsProvideAuthenticationData(options)) { + this.user = options.user; + this.pass = options.pass; + } else if (parsed && parsed.auth) { + this.user = parsed.auth.user; + this.pass = parsed.auth.pass; + + // Check hostname for user/pass + } else if (/@/.test(host) && /:/.test(host.split('@')[0])) { + host = host.split('@'); + var auth = host.shift().split(':'); + host = host.pop(); + this.user = auth[0]; + this.pass = auth[1]; + } else { + this.user = this.pass = undefined; + } + + // global configuration options + if (options && options.config) { + this.config.autoIndex = options.config.autoIndex !== false; + } + + this.name = database; + this.host = host; + this.port = port; + + var _this = this; + var promise = new Promise.ES6(function(resolve, reject) { + _this._open(true, function(error) { + callback && callback(error); + if (error) { + reject(error); + if (!callback && !promise.$hasHandler) { + _this.emit('error', error); + } + return; + } + resolve(); + }); + }); + return promise; +}; + +/** + * Helper for `dropDatabase()`. + * + * @param {Function} callback + * @return {Promise} + * @api public + */ + +Connection.prototype.dropDatabase = function(callback) { + var Promise = PromiseProvider.get(); + var _this = this; + var promise = new Promise.ES6(function(resolve, reject) { + if (_this.readyState !== STATES.connected) { + _this.on('open', function() { + _this.db.dropDatabase(function(error) { + if (error) { + reject(error); + } else { + resolve(); + } + }); + }); + } else { + _this.db.dropDatabase(function(error) { + if (error) { + reject(error); + } else { + resolve(); + } + }); + } + }); + if (callback) { + promise.then(function() { callback(); }, callback); + } + return promise; +}; + +/** + * Opens the connection to a replica set. + * + * ####Example: + * + * var db = mongoose.createConnection(); + * db.openSet("mongodb://user:pwd@localhost:27020,localhost:27021,localhost:27012/mydb"); + * + * The database name and/or auth need only be included in one URI. + * The `options` is a hash which is passed to the internal driver connection object. + * + * Valid `options` + * + * db - passed to the connection db instance + * server - passed to the connection server instance(s) + * replset - passed to the connection ReplSetServer instance + * user - username for authentication + * pass - password for authentication + * auth - options for authentication (see http://mongodb.github.com/node-mongodb-native/api-generated/db.html#authenticate) + * mongos - Boolean - if true, enables High Availability support for mongos + * + * _Options passed take precedence over options included in connection strings._ + * + * ####Notes: + * + * _If connecting to multiple mongos servers, set the `mongos` option to true._ + * + * conn.open('mongodb://mongosA:27501,mongosB:27501', { mongos: true }, cb); + * + * Mongoose forces the db option `forceServerObjectId` false and cannot be overridden. + * Mongoose defaults the server `auto_reconnect` options to true which can be overridden. + * See the node-mongodb-native driver instance for options that it understands. + * + * _Options passed take precedence over options included in connection strings._ + * + * @param {String} uris MongoDB connection string + * @param {String} [database] database name if not included in `uris` + * @param {Object} [options] passed to the internal driver + * @param {Function} [callback] + * @see node-mongodb-native https://github.com/mongodb/node-mongodb-native + * @see http://mongodb.github.com/node-mongodb-native/api-generated/db.html#authenticate + * @api public + */ + +Connection.prototype.openSet = function(uris, database, options, callback) { + if (!rgxProtocol.test(uris)) { + uris = 'mongodb://' + uris; + } + + var Promise = PromiseProvider.get(); + + switch (arguments.length) { + case 3: + switch (typeof database) { + case 'string': + this.name = database; + break; + case 'object': + callback = options; + options = database; + database = null; + break; + } + + if (typeof options === 'function') { + callback = options; + options = {}; + } + break; + case 2: + switch (typeof database) { + case 'string': + this.name = database; + break; + case 'function': + callback = database; + database = null; + break; + case 'object': + options = database; + database = null; + break; + } + } + + if (typeof database === 'string') { + this.name = database; + } + + var parsed; + try { + parsed = muri(uris); + } catch (err) { + this.error(err, callback); + return new Promise.ES6(function(resolve, reject) { + reject(err); + }); + } + + if (!this.name) { + this.name = parsed.db; + } + + this.hosts = parsed.hosts; + this.options = this.parseOptions(options, parsed && parsed.options); + this.replica = true; + + if (!this.name) { + var err = new Error('No database name provided for replica set'); + this.error(err, callback); + return new Promise.ES6(function(resolve, reject) { + reject(err); + }); + } + + // authentication + if (this.optionsProvideAuthenticationData(options)) { + this.user = options.user; + this.pass = options.pass; + } else if (parsed && parsed.auth) { + this.user = parsed.auth.user; + this.pass = parsed.auth.pass; + } else { + this.user = this.pass = undefined; + } + + // global configuration options + if (options && options.config) { + this.config.autoIndex = options.config.autoIndex !== false; + } + + var _this = this; + var emitted = false; + var promise = new Promise.ES6(function(resolve, reject) { + _this._open(true, function(error) { + callback && callback(error); + if (error) { + reject(error); + if (!callback && !promise.$hasHandler && !emitted) { + emitted = true; + _this.emit('error', error); + } + return; + } + resolve(); + }); + }); + return promise; +}; + +/** + * error + * + * Graceful error handling, passes error to callback + * if available, else emits error on the connection. + * + * @param {Error} err + * @param {Function} callback optional + * @api private + */ + +Connection.prototype.error = function(err, callback) { + if (callback) { + return callback(err); + } + this.emit('error', err); +}; + +/** + * Handles opening the connection with the appropriate method based on connection type. + * + * @param {Function} callback + * @api private + */ + +Connection.prototype._open = function(emit, callback) { + this.readyState = STATES.connecting; + this._closeCalled = false; + + var _this = this; + + var method = this.replica + ? 'doOpenSet' + : 'doOpen'; + + // open connection + this[method](function(err) { + if (err) { + _this.readyState = STATES.disconnected; + if (_this._hasOpened) { + if (callback) { + callback(err); + } + } else { + _this.error(err, emit && callback); + } + return; + } + + _this.onOpen(callback); + }); +}; + +/** + * Called when the connection is opened + * + * @api private + */ + +Connection.prototype.onOpen = function(callback) { + var _this = this; + + function open(err, isAuth) { + if (err) { + _this.readyState = isAuth ? STATES.unauthorized : STATES.disconnected; + _this.error(err, callback); + return; + } + + _this.readyState = STATES.connected; + + // avoid having the collection subscribe to our event emitter + // to prevent 0.3 warning + for (var i in _this.collections) { + if (utils.object.hasOwnProperty(_this.collections, i)) { + _this.collections[i].onOpen(); + } + } + + callback && callback(); + _this.emit('open'); + } + + // re-authenticate if we're not already connected #3871 + if (this._readyState !== STATES.connected && this.shouldAuthenticate()) { + _this.db.authenticate(_this.user, _this.pass, _this.options.auth, function(err) { + open(err, true); + }); + } else { + open(); + } +}; + +/** + * Closes the connection + * + * @param {Function} [callback] optional + * @return {Connection} self + * @api public + */ + +Connection.prototype.close = function(callback) { + var _this = this; + var Promise = PromiseProvider.get(); + return new Promise.ES6(function(resolve, reject) { + _this._close(function(error) { + callback && callback(error); + if (error) { + reject(error); + return; + } + resolve(); + }); + }); +}; + +/** + * Handles closing the connection + * + * @param {Function} callback + * @api private + */ +Connection.prototype._close = function(callback) { + var _this = this; + this._closeCalled = true; + + switch (this.readyState) { + case 0: // disconnected + callback && callback(); + break; + + case 1: // connected + case 4: // unauthorized + this.readyState = STATES.disconnecting; + this.doClose(function(err) { + if (err) { + _this.error(err, callback); + } else { + _this.onClose(); + callback && callback(); + } + }); + break; + + case 2: // connecting + this.once('open', function() { + _this.close(callback); + }); + break; + + case 3: // disconnecting + if (!callback) { + break; + } + this.once('close', function() { + callback(); + }); + break; + } + + return this; +}; + +/** + * Called when the connection closes + * + * @api private + */ + +Connection.prototype.onClose = function() { + this.readyState = STATES.disconnected; + + // avoid having the collection subscribe to our event emitter + // to prevent 0.3 warning + for (var i in this.collections) { + if (utils.object.hasOwnProperty(this.collections, i)) { + this.collections[i].onClose(); + } + } + + this.emit('close'); +}; + +/** + * Retrieves a collection, creating it if not cached. + * + * Not typically needed by applications. Just talk to your collection through your model. + * + * @param {String} name of the collection + * @param {Object} [options] optional collection options + * @return {Collection} collection instance + * @api public + */ + +Connection.prototype.collection = function(name, options) { + if (!(name in this.collections)) { + this.collections[name] = new Collection(name, this, options); + } + return this.collections[name]; +}; + +/** + * Defines or retrieves a model. + * + * var mongoose = require('mongoose'); + * var db = mongoose.createConnection(..); + * db.model('Venue', new Schema(..)); + * var Ticket = db.model('Ticket', new Schema(..)); + * var Venue = db.model('Venue'); + * + * _When no `collection` argument is passed, Mongoose produces a collection name by passing the model `name` to the [utils.toCollectionName](#utils_exports.toCollectionName) method. This method pluralizes the name. If you don't like this behavior, either pass a collection name or set your schemas collection name option._ + * + * ####Example: + * + * var schema = new Schema({ name: String }, { collection: 'actor' }); + * + * // or + * + * schema.set('collection', 'actor'); + * + * // or + * + * var collectionName = 'actor' + * var M = conn.model('Actor', schema, collectionName) + * + * @param {String} name the model name + * @param {Schema} [schema] a schema. necessary when defining a model + * @param {String} [collection] name of mongodb collection (optional) if not given it will be induced from model name + * @see Mongoose#model #index_Mongoose-model + * @return {Model} The compiled model + * @api public + */ + +Connection.prototype.model = function(name, schema, collection) { + // collection name discovery + if (typeof schema === 'string') { + collection = schema; + schema = false; + } + + if (utils.isObject(schema) && !schema.instanceOfSchema) { + schema = new Schema(schema); + } + if (schema && !schema.instanceOfSchema) { + throw new Error('The 2nd parameter to `mongoose.model()` should be a ' + + 'schema or a POJO'); + } + + if (this.models[name] && !collection) { + // model exists but we are not subclassing with custom collection + if (schema && schema.instanceOfSchema && schema !== this.models[name].schema) { + throw new MongooseError.OverwriteModelError(name); + } + return this.models[name]; + } + + var opts = {cache: false, connection: this}; + var model; + + if (schema && schema.instanceOfSchema) { + // compile a model + model = this.base.model(name, schema, collection, opts); + + // only the first model with this name is cached to allow + // for one-offs with custom collection names etc. + if (!this.models[name]) { + this.models[name] = model; + } + + model.init(); + return model; + } + + if (this.models[name] && collection) { + // subclassing current model with alternate collection + model = this.models[name]; + schema = model.prototype.schema; + var sub = model.__subclass(this, schema, collection); + // do not cache the sub model + return sub; + } + + // lookup model in mongoose module + model = this.base.models[name]; + + if (!model) { + throw new MongooseError.MissingSchemaError(name); + } + + if (this === model.prototype.db + && (!collection || collection === model.collection.name)) { + // model already uses this connection. + + // only the first model with this name is cached to allow + // for one-offs with custom collection names etc. + if (!this.models[name]) { + this.models[name] = model; + } + + return model; + } + this.models[name] = model.__subclass(this, schema, collection); + return this.models[name]; +}; + +/** + * Returns an array of model names created on this connection. + * @api public + * @return {Array} + */ + +Connection.prototype.modelNames = function() { + return Object.keys(this.models); +}; + +/** + * @brief Returns if the connection requires authentication after it is opened. Generally if a + * username and password are both provided than authentication is needed, but in some cases a + * password is not required. + * @api private + * @return {Boolean} true if the connection should be authenticated after it is opened, otherwise false. + */ +Connection.prototype.shouldAuthenticate = function() { + return (this.user !== null && this.user !== void 0) && + ((this.pass !== null || this.pass !== void 0) || this.authMechanismDoesNotRequirePassword()); +}; + +/** + * @brief Returns a boolean value that specifies if the current authentication mechanism needs a + * password to authenticate according to the auth objects passed into the open/openSet methods. + * @api private + * @return {Boolean} true if the authentication mechanism specified in the options object requires + * a password, otherwise false. + */ +Connection.prototype.authMechanismDoesNotRequirePassword = function() { + if (this.options && this.options.auth) { + return authMechanismsWhichDontRequirePassword.indexOf(this.options.auth.authMechanism) >= 0; + } + return true; +}; + +/** + * @brief Returns a boolean value that specifies if the provided objects object provides enough + * data to authenticate with. Generally this is true if the username and password are both specified + * but in some authentication methods, a password is not required for authentication so only a username + * is required. + * @param {Object} [options] the options object passed into the open/openSet methods. + * @api private + * @return {Boolean} true if the provided options object provides enough data to authenticate with, + * otherwise false. + */ +Connection.prototype.optionsProvideAuthenticationData = function(options) { + return (options) && + (options.user) && + ((options.pass) || this.authMechanismDoesNotRequirePassword()); +}; + +/*! + * Module exports. + */ + +Connection.STATES = STATES; +module.exports = Connection; |