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This commit is contained in:
497
node_modules/mongodb/lib/topologies/replset.js
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vendored
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497
node_modules/mongodb/lib/topologies/replset.js
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'use strict';
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const Server = require('./server');
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const Cursor = require('../cursor');
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const MongoError = require('mongodb-core').MongoError;
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const TopologyBase = require('./topology_base').TopologyBase;
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const Store = require('./topology_base').Store;
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const CReplSet = require('mongodb-core').ReplSet;
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const MAX_JS_INT = require('../utils').MAX_JS_INT;
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const translateOptions = require('../utils').translateOptions;
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const filterOptions = require('../utils').filterOptions;
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const mergeOptions = require('../utils').mergeOptions;
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/**
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* @fileOverview The **ReplSet** class is a class that represents a Replicaset topology and is
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* used to construct connections.
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*
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* **ReplSet Should not be used, use MongoClient.connect**
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*/
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// Allowed parameters
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var legalOptionNames = [
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'ha',
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'haInterval',
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'replicaSet',
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'rs_name',
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'secondaryAcceptableLatencyMS',
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'connectWithNoPrimary',
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'poolSize',
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'ssl',
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'checkServerIdentity',
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'sslValidate',
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'sslCA',
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'sslCert',
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'ciphers',
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'ecdhCurve',
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'sslCRL',
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'sslKey',
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'sslPass',
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'socketOptions',
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'bufferMaxEntries',
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'store',
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||||
'auto_reconnect',
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'autoReconnect',
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'emitError',
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'keepAlive',
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||||
'keepAliveInitialDelay',
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'noDelay',
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'connectTimeoutMS',
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'socketTimeoutMS',
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'strategy',
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'debug',
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'family',
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'loggerLevel',
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'logger',
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'reconnectTries',
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'appname',
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'domainsEnabled',
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'servername',
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'promoteLongs',
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'promoteValues',
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'promoteBuffers',
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'maxStalenessSeconds',
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'promiseLibrary',
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'minSize',
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'monitorCommands'
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];
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/**
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* Creates a new ReplSet instance
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* @class
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* @deprecated
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* @param {Server[]} servers A seedlist of servers participating in the replicaset.
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* @param {object} [options] Optional settings.
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* @param {boolean} [options.ha=true] Turn on high availability monitoring.
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* @param {number} [options.haInterval=10000] Time between each replicaset status check.
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* @param {string} [options.replicaSet] The name of the replicaset to connect to.
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* @param {number} [options.secondaryAcceptableLatencyMS=15] Sets the range of servers to pick when using NEAREST (lowest ping ms + the latency fence, ex: range of 1 to (1 + 15) ms)
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* @param {boolean} [options.connectWithNoPrimary=false] Sets if the driver should connect even if no primary is available
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* @param {number} [options.poolSize=5] Number of connections in the connection pool for each server instance, set to 5 as default for legacy reasons.
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* @param {boolean} [options.ssl=false] Use ssl connection (needs to have a mongod server with ssl support)
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* @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.
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* @param {boolean} [options.sslValidate=true] Validate mongod server certificate against ca (needs to have a mongod server with ssl support, 2.4 or higher)
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* @param {array} [options.sslCA] Array of valid certificates either as Buffers or Strings (needs to have a mongod server with ssl support, 2.4 or higher)
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* @param {array} [options.sslCRL] Array of revocation certificates either as Buffers or Strings (needs to have a mongod server with ssl support, 2.4 or higher)
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* @param {(Buffer|string)} [options.sslCert] String or buffer containing the certificate we wish to present (needs to have a mongod server with ssl support, 2.4 or higher.
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* @param {string} [options.ciphers] Passed directly through to tls.createSecureContext. See https://nodejs.org/dist/latest-v9.x/docs/api/tls.html#tls_tls_createsecurecontext_options for more info.
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* @param {string} [options.ecdhCurve] Passed directly through to tls.createSecureContext. See https://nodejs.org/dist/latest-v9.x/docs/api/tls.html#tls_tls_createsecurecontext_options for more info.
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* @param {(Buffer|string)} [options.sslKey] 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)
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* @param {(Buffer|string)} [options.sslPass] String or buffer containing the certificate password (needs to have a mongod server with ssl support, 2.4 or higher)
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* @param {string} [options.servername] String containing the server name requested via TLS SNI.
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* @param {object} [options.socketOptions] Socket options
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||||
* @param {boolean} [options.socketOptions.noDelay=true] TCP Socket NoDelay option.
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||||
* @param {boolean} [options.socketOptions.keepAlive=true] TCP Connection keep alive enabled
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* @param {number} [options.socketOptions.keepAliveInitialDelay=30000] The number of milliseconds to wait before initiating keepAlive on the TCP socket
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||||
* @param {number} [options.socketOptions.connectTimeoutMS=10000] TCP Connection timeout setting
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* @param {number} [options.socketOptions.socketTimeoutMS=0] TCP Socket timeout setting
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* @param {boolean} [options.domainsEnabled=false] Enable the wrapping of the callback in the current domain, disabled by default to avoid perf hit.
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* @param {number} [options.maxStalenessSeconds=undefined] The max staleness to secondary reads (values under 10 seconds cannot be guaranteed);
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* @param {boolean} [options.monitorCommands=false] Enable command monitoring for this topology
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* @fires ReplSet#connect
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* @fires ReplSet#ha
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* @fires ReplSet#joined
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* @fires ReplSet#left
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||||
* @fires ReplSet#fullsetup
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||||
* @fires ReplSet#open
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* @fires ReplSet#close
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||||
* @fires ReplSet#error
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* @fires ReplSet#timeout
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* @fires ReplSet#parseError
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||||
* @fires ReplSet#commandStarted
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* @fires ReplSet#commandSucceeded
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* @fires ReplSet#commandFailed
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* @property {string} parserType the parser type used (c++ or js).
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* @return {ReplSet} a ReplSet instance.
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*/
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class ReplSet extends TopologyBase {
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constructor(servers, options) {
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super();
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options = options || {};
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var self = this;
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// Filter the options
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options = filterOptions(options, legalOptionNames);
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// Ensure all the instances are Server
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for (var i = 0; i < servers.length; i++) {
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if (!(servers[i] instanceof Server)) {
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throw MongoError.create({
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||||
message: 'all seed list instances must be of the Server type',
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driver: true
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});
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}
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}
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// Stored options
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||||
var storeOptions = {
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force: false,
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bufferMaxEntries:
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typeof options.bufferMaxEntries === 'number' ? options.bufferMaxEntries : MAX_JS_INT
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};
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// Shared global store
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var store = options.store || new Store(self, storeOptions);
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// Build seed list
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var seedlist = servers.map(function(x) {
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return { host: x.host, port: x.port };
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});
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// Clone options
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var clonedOptions = mergeOptions(
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{},
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{
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disconnectHandler: store,
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cursorFactory: Cursor,
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reconnect: false,
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emitError: typeof options.emitError === 'boolean' ? options.emitError : true,
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size: typeof options.poolSize === 'number' ? options.poolSize : 5,
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||||
monitorCommands:
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||||
typeof options.monitorCommands === 'boolean' ? options.monitorCommands : false
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||||
}
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||||
);
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||||
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||||
// Translate any SSL options and other connectivity options
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||||
clonedOptions = translateOptions(clonedOptions, options);
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||||
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||||
// Socket options
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||||
var socketOptions =
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||||
options.socketOptions && Object.keys(options.socketOptions).length > 0
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||||
? options.socketOptions
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: options;
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||||
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// Translate all the options to the mongodb-core ones
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||||
clonedOptions = translateOptions(clonedOptions, socketOptions);
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||||
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||||
// Build default client information
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||||
clonedOptions.clientInfo = this.clientInfo;
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||||
// Do we have an application specific string
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||||
if (options.appname) {
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||||
clonedOptions.clientInfo.application = { name: options.appname };
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||||
}
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||||
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||||
// Create the ReplSet
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||||
var coreTopology = new CReplSet(seedlist, clonedOptions);
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||||
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||||
// Listen to reconnect event
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||||
coreTopology.on('reconnect', function() {
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self.emit('reconnect');
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store.execute();
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||||
});
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||||
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||||
// Internal state
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||||
this.s = {
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||||
// Replicaset
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||||
coreTopology: coreTopology,
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// Server capabilities
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||||
sCapabilities: null,
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||||
// Debug tag
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||||
tag: options.tag,
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||||
// Store options
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||||
storeOptions: storeOptions,
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||||
// Cloned options
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||||
clonedOptions: clonedOptions,
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||||
// Store
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||||
store: store,
|
||||
// Options
|
||||
options: options,
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||||
// Server Session Pool
|
||||
sessionPool: null,
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||||
// Active client sessions
|
||||
sessions: [],
|
||||
// Promise library
|
||||
promiseLibrary: options.promiseLibrary || Promise
|
||||
};
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||||
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||||
// Debug
|
||||
if (clonedOptions.debug) {
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||||
// Last ismaster
|
||||
Object.defineProperty(this, 'replset', {
|
||||
enumerable: true,
|
||||
get: function() {
|
||||
return coreTopology;
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
// Connect method
|
||||
connect(_options, callback) {
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||||
var self = this;
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||||
if ('function' === typeof _options) (callback = _options), (_options = {});
|
||||
if (_options == null) _options = {};
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||||
if (!('function' === typeof callback)) callback = null;
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||||
_options = Object.assign({}, this.s.clonedOptions, _options);
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||||
self.s.options = _options;
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||||
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||||
// Update bufferMaxEntries
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||||
self.s.storeOptions.bufferMaxEntries =
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||||
typeof _options.bufferMaxEntries === 'number' ? _options.bufferMaxEntries : -1;
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||||
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||||
// Actual handler
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||||
var errorHandler = function(event) {
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||||
return function(err) {
|
||||
if (event !== 'error') {
|
||||
self.emit(event, err);
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||||
}
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||||
};
|
||||
};
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||||
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||||
// Clear out all the current handlers left over
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||||
var events = [
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||||
'timeout',
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||||
'error',
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||||
'close',
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||||
'serverOpening',
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||||
'serverDescriptionChanged',
|
||||
'serverHeartbeatStarted',
|
||||
'serverHeartbeatSucceeded',
|
||||
'serverHeartbeatFailed',
|
||||
'serverClosed',
|
||||
'topologyOpening',
|
||||
'topologyClosed',
|
||||
'topologyDescriptionChanged',
|
||||
'commandStarted',
|
||||
'commandSucceeded',
|
||||
'commandFailed',
|
||||
'joined',
|
||||
'left',
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||||
'ping',
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||||
'ha'
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||||
];
|
||||
events.forEach(function(e) {
|
||||
self.s.coreTopology.removeAllListeners(e);
|
||||
});
|
||||
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||||
// relay the event
|
||||
var relay = function(event) {
|
||||
return function(t, server) {
|
||||
self.emit(event, t, server);
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||||
};
|
||||
};
|
||||
|
||||
// Replset events relay
|
||||
var replsetRelay = function(event) {
|
||||
return function(t, server) {
|
||||
self.emit(event, t, server.lastIsMaster(), server);
|
||||
};
|
||||
};
|
||||
|
||||
// Relay ha
|
||||
var relayHa = function(t, state) {
|
||||
self.emit('ha', t, state);
|
||||
|
||||
if (t === 'start') {
|
||||
self.emit('ha_connect', t, state);
|
||||
} else if (t === 'end') {
|
||||
self.emit('ha_ismaster', t, state);
|
||||
}
|
||||
};
|
||||
|
||||
// Set up serverConfig listeners
|
||||
self.s.coreTopology.on('joined', replsetRelay('joined'));
|
||||
self.s.coreTopology.on('left', relay('left'));
|
||||
self.s.coreTopology.on('ping', relay('ping'));
|
||||
self.s.coreTopology.on('ha', relayHa);
|
||||
|
||||
// Set up SDAM listeners
|
||||
self.s.coreTopology.on('serverDescriptionChanged', relay('serverDescriptionChanged'));
|
||||
self.s.coreTopology.on('serverHeartbeatStarted', relay('serverHeartbeatStarted'));
|
||||
self.s.coreTopology.on('serverHeartbeatSucceeded', relay('serverHeartbeatSucceeded'));
|
||||
self.s.coreTopology.on('serverHeartbeatFailed', relay('serverHeartbeatFailed'));
|
||||
self.s.coreTopology.on('serverOpening', relay('serverOpening'));
|
||||
self.s.coreTopology.on('serverClosed', relay('serverClosed'));
|
||||
self.s.coreTopology.on('topologyOpening', relay('topologyOpening'));
|
||||
self.s.coreTopology.on('topologyClosed', relay('topologyClosed'));
|
||||
self.s.coreTopology.on('topologyDescriptionChanged', relay('topologyDescriptionChanged'));
|
||||
self.s.coreTopology.on('commandStarted', relay('commandStarted'));
|
||||
self.s.coreTopology.on('commandSucceeded', relay('commandSucceeded'));
|
||||
self.s.coreTopology.on('commandFailed', relay('commandFailed'));
|
||||
|
||||
self.s.coreTopology.on('fullsetup', function() {
|
||||
self.emit('fullsetup', self, self);
|
||||
});
|
||||
|
||||
self.s.coreTopology.on('all', function() {
|
||||
self.emit('all', null, self);
|
||||
});
|
||||
|
||||
// Connect handler
|
||||
var connectHandler = function() {
|
||||
// Set up listeners
|
||||
self.s.coreTopology.once('timeout', errorHandler('timeout'));
|
||||
self.s.coreTopology.once('error', errorHandler('error'));
|
||||
self.s.coreTopology.once('close', errorHandler('close'));
|
||||
|
||||
// Emit open event
|
||||
self.emit('open', null, self);
|
||||
|
||||
// Return correctly
|
||||
try {
|
||||
callback(null, self);
|
||||
} catch (err) {
|
||||
process.nextTick(function() {
|
||||
throw err;
|
||||
});
|
||||
}
|
||||
};
|
||||
|
||||
// Error handler
|
||||
var connectErrorHandler = function() {
|
||||
return function(err) {
|
||||
['timeout', 'error', 'close'].forEach(function(e) {
|
||||
self.s.coreTopology.removeListener(e, connectErrorHandler);
|
||||
});
|
||||
|
||||
self.s.coreTopology.removeListener('connect', connectErrorHandler);
|
||||
// Destroy the replset
|
||||
self.s.coreTopology.destroy();
|
||||
|
||||
// Try to callback
|
||||
try {
|
||||
callback(err);
|
||||
} catch (err) {
|
||||
if (!self.s.coreTopology.isConnected())
|
||||
process.nextTick(function() {
|
||||
throw err;
|
||||
});
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
// Set up listeners
|
||||
self.s.coreTopology.once('timeout', connectErrorHandler('timeout'));
|
||||
self.s.coreTopology.once('error', connectErrorHandler('error'));
|
||||
self.s.coreTopology.once('close', connectErrorHandler('close'));
|
||||
self.s.coreTopology.once('connect', connectHandler);
|
||||
|
||||
// Start connection
|
||||
self.s.coreTopology.connect(_options);
|
||||
}
|
||||
|
||||
close(forceClosed) {
|
||||
super.close(forceClosed);
|
||||
|
||||
['timeout', 'error', 'close', 'joined', 'left'].forEach(e => this.removeAllListeners(e));
|
||||
}
|
||||
}
|
||||
|
||||
Object.defineProperty(ReplSet.prototype, 'haInterval', {
|
||||
enumerable: true,
|
||||
get: function() {
|
||||
return this.s.coreTopology.s.haInterval;
|
||||
}
|
||||
});
|
||||
|
||||
/**
|
||||
* A replset connect event, used to verify that the connection is up and running
|
||||
*
|
||||
* @event ReplSet#connect
|
||||
* @type {ReplSet}
|
||||
*/
|
||||
|
||||
/**
|
||||
* The replset high availability event
|
||||
*
|
||||
* @event ReplSet#ha
|
||||
* @type {function}
|
||||
* @param {string} type The stage in the high availability event (start|end)
|
||||
* @param {boolean} data.norepeat This is a repeating high availability process or a single execution only
|
||||
* @param {number} data.id The id for this high availability request
|
||||
* @param {object} data.state An object containing the information about the current replicaset
|
||||
*/
|
||||
|
||||
/**
|
||||
* A server member left the replicaset
|
||||
*
|
||||
* @event ReplSet#left
|
||||
* @type {function}
|
||||
* @param {string} type The type of member that left (primary|secondary|arbiter)
|
||||
* @param {Server} server The server object that left
|
||||
*/
|
||||
|
||||
/**
|
||||
* A server member joined the replicaset
|
||||
*
|
||||
* @event ReplSet#joined
|
||||
* @type {function}
|
||||
* @param {string} type The type of member that joined (primary|secondary|arbiter)
|
||||
* @param {Server} server The server object that joined
|
||||
*/
|
||||
|
||||
/**
|
||||
* ReplSet open event, emitted when replicaset can start processing commands.
|
||||
*
|
||||
* @event ReplSet#open
|
||||
* @type {Replset}
|
||||
*/
|
||||
|
||||
/**
|
||||
* ReplSet fullsetup event, emitted when all servers in the topology have been connected to.
|
||||
*
|
||||
* @event ReplSet#fullsetup
|
||||
* @type {Replset}
|
||||
*/
|
||||
|
||||
/**
|
||||
* ReplSet close event
|
||||
*
|
||||
* @event ReplSet#close
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
/**
|
||||
* ReplSet error event, emitted if there is an error listener.
|
||||
*
|
||||
* @event ReplSet#error
|
||||
* @type {MongoError}
|
||||
*/
|
||||
|
||||
/**
|
||||
* ReplSet timeout event
|
||||
*
|
||||
* @event ReplSet#timeout
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
/**
|
||||
* ReplSet parseError event
|
||||
*
|
||||
* @event ReplSet#parseError
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
/**
|
||||
* An event emitted indicating a command was started, if command monitoring is enabled
|
||||
*
|
||||
* @event ReplSet#commandStarted
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
/**
|
||||
* An event emitted indicating a command succeeded, if command monitoring is enabled
|
||||
*
|
||||
* @event ReplSet#commandSucceeded
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
/**
|
||||
* An event emitted indicating a command failed, if command monitoring is enabled
|
||||
*
|
||||
* @event ReplSet#commandFailed
|
||||
* @type {object}
|
||||
*/
|
||||
|
||||
module.exports = ReplSet;
|
||||
Reference in New Issue
Block a user