Implemented connection to cluster using gossip seeds

README.md

@@ -35,7 +35,9 @@ Examples
 
 ## Porting .Net Task to Node.js
 
-I used Promise to replace .Net Task, so when executing an async command, i.e. appendToStream you'll have to wait for result/error like this:
+.Net Task have been replace with Promise. When executing an async command, i.e. appendToStream you can use then/catch to wait for result/error.
+
+*Example*
 
     connection
       .appendToStream('myStream', client.expectedVersion.any, events, userCredentials)
@@ -51,7 +53,6 @@ I used Promise to replace .Net Task, so when executing an async command, i.e. ap
 To run the tests you will need
 
 - To install the dependencies (`npm install`)
-- To install nodeunit (`npm install -g nodeunit`)
 - Run an instance of EventStore >= 3.3.0 (competing consumers are required for test) on localhost:1113 (Download [here](https://geteventstore.com/downloads/))
 
 To execute the tests suites simply run test with npm

src/client.js

@@ -44,6 +44,7 @@ module.exports.UserCredentials = require('./systemData/userCredentials');
 module.exports.EventData = EventData;
 module.exports.PersistentSubscriptionSettings = require('./persistentSubscriptionSettings');
 module.exports.SystemConsumerStrategies = require('./systemConsumerStrategies');
+module.exports.GossipSeed = require('./gossipSeed');
 // Exporting errors
 module.exports.WrongExpectedVersionError = require('./errors/wrongExpectedVersionError');
 module.exports.StreamDeletedError = require('./errors/streamDeletedError');

src/core/clusterDnsEndPointDiscoverer.js

@@ -0,0 +1,240 @@
+var http = require('http');
+var util = require('util');
+var GossipSeed = require('../gossipSeed');
+
+function NodeEndPoints(tcpEndPoint, secureTcpEndPoint) {
+  if (tcpEndPoint === null && secureTcpEndPoint === null) throw new Error('Both endpoints are null.');
+  Object.defineProperties(this, {
+    tcpEndPoint: {
+      enumerable: true,
+      value: tcpEndPoint
+    },
+    secureTcpEndPoint: {
+      enumerable: true,
+      value: secureTcpEndPoint
+    }
+  });
+}
+
+function ClusterDnsEndPointDiscoverer(log, clusterDns, maxDiscoverAttempts, managerExternalHttpPort, gossipSeeds, gossipTimeout) {
+  if (!clusterDns && (!gossipSeeds || gossipSeeds.length === 0)) throw new Error('Both clusterDns and gossipSeeds are null/empty.');
+  this._log = log;
+  this._clusterDns = clusterDns;
+  this._maxDiscoverAttempts = maxDiscoverAttempts;
+  this._managerExternalHttpPort = managerExternalHttpPort;
+  this._gossipSeeds = gossipSeeds;
+  this._gossipTimeout = gossipTimeout;
+  this._oldGossip = null;
+}
+
+ClusterDnsEndPointDiscoverer.prototype.discover = function(failedTcpEndPoint) {
+  var attempt = 1;
+  var self = this;
+  function discover(resolve, reject) {
+    self._discoverEndPoint(failedTcpEndPoint)
+      .then(function (endPoints) {
+        if (!endPoints)
+          self._log.info(util.format("Discovering attempt %d/%d failed: no candidate found.", attempt, self._maxDiscoverAttempts));
+        return endPoints;
+      })
+      .catch(function (exc) {
+        self._log.info(util.format("Discovering attempt %d/%d failed with error: %s.", attempt, self._maxDiscoverAttempts, exc));
+      })
+      .then(function (endPoints) {
+        if (endPoints)
+          return resolve(endPoints);
+        if (attempt++ === self._maxDiscoverAttempts)
+          return reject(new Error('Failed to discover candidate in ' + self._maxDiscoverAttempts + ' attempts.'));
+        setTimeout(discover, 500, resolve, reject);
+      });
+  }
+  return new Promise(function (resolve, reject) {
+    discover(resolve, reject);
+  });
+};
+
+/**
+ * Discover Cluster endpoints
+ * @param {Object} failedTcpEndPoint
+ * @returns {Promise.<NodeEndPoints>}
+ * @private
+ */
+ClusterDnsEndPointDiscoverer.prototype._discoverEndPoint = function (failedTcpEndPoint) {
+  try {
+    var gossipCandidates = this._oldGossip
+      ? this._getGossipCandidatesFromOldGossip(this._oldGossip, failedTcpEndPoint)
+      : this._getGossipCandidatesFromDns();
+    var self = this;
+    var promise = Promise.resolve();
+    var j = 0;
+    for (var i = 0; i < gossipCandidates.length; i++) {
+      promise = promise.then(function (endPoints) {
+        if (endPoints) return endPoints;
+
+        return self._tryGetGossipFrom(gossipCandidates[j++])
+          .then(function (gossip) {
+            if (gossip === null || gossip.members === null || gossip.members.length === 0)
+              return;
+            var bestNode = self._tryDetermineBestNode(gossip.members);
+            if (bestNode !== null) {
+              self._oldGossip = gossip.members;
+              return bestNode;
+            }
+          });
+      });
+    }
+    return promise;
+  } catch (e) {
+    return Promise.reject(e);
+  }
+};
+
+ClusterDnsEndPointDiscoverer.prototype._getGossipCandidatesFromOldGossip = function (oldGossip, failedTcpEndPoint) {
+  if (failedTcpEndPoint === null) return oldGossip;
+  var gossipCandidates = oldGossip.filter(function(x) {
+    //TODO: failedTcpEndpoint.host might not be an ip
+    return (x.externalTcpPort !== failedTcpEndPoint.port && x.externalTcpIp !== failedTcpEndPoint.host);
+  });
+  return this._arrangeGossipCandidates(gossipCandidates);
+};
+
+ClusterDnsEndPointDiscoverer.prototype._arrangeGossipCandidates = function (members) {
+  var result = new Array(members.length);
+  var i = -1;
+  var j = members.length;
+  for (var k = 0; k < members.length; ++k)
+  {
+    if (members[k].state === 'Manager')
+      result[--j] = new GossipSeed({host: members[k].externalHttpIp, port: members[k].externalHttpPort});
+    else
+      result[++i] = new GossipSeed({host: members[k].externalHttpIp, port: members[k].externalHttpPort});
+  }
+  this._randomShuffle(result, 0, i); // shuffle nodes
+  this._randomShuffle(result, j, members.length - 1); // shuffle managers
+  return result;
+};
+
+ClusterDnsEndPointDiscoverer.prototype._getGossipCandidatesFromDns = function () {
+  var endpoints = [];
+  if(this._gossipSeeds !== null && this._gossipSeeds.length > 0)
+  {
+    endpoints = this._gossipSeeds;
+  }
+  else
+  {
+    //TODO: dns resolve
+    throw new Error('Not implemented.');
+    //endpoints = ResolveDns(_clusterDns).Select(x => new GossipSeed(new IPEndPoint(x, _managerExternalHttpPort))).ToArray();
+  }
+
+  this._randomShuffle(endpoints, 0, endpoints.length-1);
+  return endpoints;
+};
+
+ClusterDnsEndPointDiscoverer.prototype._tryGetGossipFrom = function (endPoint) {
+  var options = {
+    hostname: endPoint.endPoint.hostname,
+    port: endPoint.endPoint.port,
+    path: '/gossip?format=json'
+  };
+  if (endPoint.hostHeader) {
+    options.headers = {'Host': endPoint.hostHeader};
+  }
+  var self = this;
+  return new Promise(function (resolve, reject) {
+    try {
+      http
+        .request(options, function (res) {
+          var result = '';
+          if (res.statusCode !== 200) {
+            self._log.info('Trying to get gossip from', endPoint, 'failed with status code:', res.statusCode);
+            resolve();
+            return;
+          }
+          res.on('data', function (chunk) {
+            result += chunk.toString();
+          });
+          res.on('end', function () {
+            try {
+              result = JSON.parse(result);
+            } catch (e) {
+              return resolve();
+            }
+            resolve(result);
+          });
+        })
+        .setTimeout(self._gossipTimeout, function () {
+          self._log.info('Trying to get gossip from', endPoint, 'timed out.');
+          resolve();
+        })
+        .on('error', function (e) {
+          self._log.info('Trying to get gossip from', endPoint, 'failed with error:', e);
+          resolve();
+        })
+        .end();
+    } catch(e) {
+      reject(e);
+    }
+  });
+};
+
+const VNodeStates = {
+  'Initializing': 0,
+  'Unknown': 1,
+  'PreReplica': 2,
+  'CatchingUp': 3,
+  'Clone': 4,
+  'Slave': 5,
+  'PreMaster': 6,
+  'Master': 7,
+  'Manager': 8,
+  'ShuttingDown': 9,
+  'Shutdown': 10
+};
+
+ClusterDnsEndPointDiscoverer.prototype._tryDetermineBestNode = function (members) {
+  var notAllowedStates = [
+    'Manager',
+    'ShuttingDown',
+    'Shutdown'
+  ];
+  var node = members
+    .filter(function (x) {
+      return (x.isAlive && notAllowedStates.indexOf(x.state) === -1);
+    })
+    .sort(function (a, b) {
+      return VNodeStates[b.state] - VNodeStates[a.state];
+    })[0];
+  if (!node)
+  {
+    //_log.Info("Unable to locate suitable node. Gossip info:\n{0}.", string.Join("\n", members.Select(x => x.ToString())));
+    return null;
+  }
+
+  var normTcp = {host: node.externalTcpIp, port: node.externalTcpPort};
+  var secTcp = node.externalSecureTcpPort > 0
+    ? {host: externalTcpIp, port: node.externalSecureTcpPort}
+    : null;
+  this._log.info(util.format("Discovering: found best choice [%j,%j] (%s).", normTcp, secTcp == null ? "n/a" : secTcp, node.state));
+  return new NodeEndPoints(normTcp, secTcp);
+};
+
+function rndNext(min, max) {
+  min = Math.ceil(min);
+  max = Math.floor(max);
+  return Math.floor(Math.random() * (max - min)) + min;
+}
+
+ClusterDnsEndPointDiscoverer.prototype._randomShuffle = function (arr, i, j) {
+  if (i >= j)
+    return;
+  for (var k = i; k <= j; ++k)
+  {
+    var index = rndNext(k, j + 1);
+    var tmp = arr[index];
+    arr[index] = arr[k];
+    arr[k] = tmp;
+  }
+};
+
+module.exports = ClusterDnsEndPointDiscoverer;

src/core/eventStoreConnectionLogicHandler.js

@@ -624,7 +624,7 @@ EventStoreConnectionLogicHandler.prototype._timerTick = function() {
 };
 
 EventStoreConnectionLogicHandler.prototype._manageHeartbeats = function() {
-  if (this._connection == null) throw new Error();
+  if (this._connection == null) return;
 
   var timeout = this._heartbeatInfo.isIntervalStage ? this._settings.heartbeatInterval : this._settings.heartbeatTimeout;
   if (Date.now() - this._heartbeatInfo.timeStamp < timeout)

src/eventStoreConnection.js

@@ -1,6 +1,8 @@
 var EventStoreNodeConnection = require('./eventStoreNodeConnection');
 var StaticEndpointDiscoverer = require('./core/staticEndpointDiscoverer');
+var ClusterDnsEndPointDiscoverer = require('./core/clusterDnsEndPointDiscoverer');
 var NoopLogger = require('./common/log/noopLogger');
+var ensure = require('./common/utils/ensure');
 
 var defaultConnectionSettings = {
   log: new NoopLogger(),
@@ -25,7 +27,13 @@ var defaultConnectionSettings = {
   failOnNoServerResponse: false,
   heartbeatInterval: 750,
   heartbeatTimeout: 1500,
-  clientConnectionTimeout: 1000
+  clientConnectionTimeout: 1000,
+
+  // Cluster Settings
+  clusterDns: '',
+  maxDiscoverAttemps: 10,
+  externalGossipPort: 0,
+  gossipTimeout: 1000
 };
 
 
@@ -40,24 +48,63 @@ function merge(a,b) {
   return c;
 }
 
+function createFromTcpEndpoint(settings, tcpEndpoint, connectionName) {
+  if (!tcpEndpoint.port || !tcpEndpoint.hostname) throw new TypeError('endPoint object must have hostname and port properties.');
+  var mergedSettings = merge(defaultConnectionSettings, settings || {});
+  var endpointDiscoverer = new StaticEndpointDiscoverer(tcpEndpoint, settings.useSslConnection);
+  return new EventStoreNodeConnection(mergedSettings, null, endpointDiscoverer, connectionName || null);
+}
+
+function createFromStringEndpoint(settings, endPoint, connectionName) {
+  var m = endPoint.match(/^(tcp|discover):\/\/([^:]):?(\d+)?$/);
+  if (!m) throw new Error('endPoint string must be tcp://hostname[:port] or discover://dns[:port]');
+  var scheme = m[1];
+  var hostname = m[2];
+  var port = m[3] ? parseInt(m[3]) : 1113;
+  if (scheme === 'tcp') {
+    var tcpEndpoint = {
+      hostname: hostname,
+      port: port
+    };
+    return createFromTcpEndpoint(settings, tcpEndpoint, connectionName);
+  }
+  if (scheme === 'discover') {
+    throw new Error('Not implemented.');
+  }
+  throw new Error('Invalid scheme for endPoint: ' + scheme);
+}
+
+function createFromGossipSeeds(connectionSettings, gossipSeeds, connectionName) {
+  ensure.notNull(connectionSettings, "connectionSettings");
+  ensure.notNull(gossipSeeds, "gossipSeeds");
+  var mergedSettings = merge(defaultConnectionSettings, connectionSettings || {});
+  var clusterSettings = {
+    clusterDns: '',
+    gossipSeeds: gossipSeeds,
+    externalGossipPort: 0,
+    maxDiscoverAttempts: mergedSettings.maxDiscoverAttempts,
+    gossipTimeout: mergedSettings.gossipTimeout
+  };
+  var endPointDiscoverer = new ClusterDnsEndPointDiscoverer(connectionSettings.log,
+    clusterSettings.clusterDns,
+    clusterSettings.maxDiscoverAttempts,
+    clusterSettings.externalGossipPort,
+    clusterSettings.gossipSeeds,
+    clusterSettings.gossipTimeout
+  );
+  return new EventStoreNodeConnection(mergedSettings, clusterSettings, endPointDiscoverer, connectionName);
+}
+
 /**
  * Create an EventStore connection
  * @param {object} settings
- * @param {string|object} endPoint
+ * @param {string|object|array} endPointOrGossipSeeds
  * @param {string} [connectionName]
  * @returns {EventStoreNodeConnection}
  */
-module.exports.create = function(settings, endPoint, connectionName) {
-  if (typeof endPoint === 'object') {
-    var mergedSettings = merge(defaultConnectionSettings, settings || {});
-    var endpointDiscoverer = new StaticEndpointDiscoverer(endPoint, settings.useSslConnection);
-    return new EventStoreNodeConnection(mergedSettings, endpointDiscoverer, connectionName || null);
-  }
-  if (typeof endPoint === 'string') {
-    //TODO: tcpEndpoint represented as tcp://hostname:port
-    //TODO: cluster discovery via dns represented as discover://dns:?port
-    throw new Error('Not implemented.');
-  }
-  //TODO: cluster discovery via gossip seeds in settings
-  throw new Error('Not implemented.');
+module.exports.create = function(settings, endPointOrGossipSeeds, connectionName) {
+  if (Array.isArray(endPointOrGossipSeeds)) return createFromGossipSeeds(settings, endPointOrGossipSeeds, connectionName);
+  if (typeof endPointOrGossipSeeds === 'object') return createFromTcpEndpoint(settings, endPointOrGossipSeeds, connectionName);
+  if (typeof endPointOrGossipSeeds === 'string') return createFromStringEndpoint(settings, endPointOrGossipSeeds, connectionName);
+  throw new TypeError('endPointOrGossipSeeds must be an object, a string or an array.');
 };

src/eventStoreNodeConnection.js

@@ -34,14 +34,16 @@ const MaxReadSize = 4096;
 
 /**
  * @param settings
+ * @param clusterSettings
  * @param endpointDiscoverer
  * @param connectionName
  * @constructor
  * @property {string} connectionName
  */
-function EventStoreNodeConnection(settings, endpointDiscoverer, connectionName) {
+function EventStoreNodeConnection(settings, clusterSettings, endpointDiscoverer, connectionName) {
   this._connectionName = connectionName || ['ES-', uuid.v4()].join('');
   this._settings = settings;
+  this._clusterSettings = clusterSettings;
   this._endpointDiscoverer = endpointDiscoverer;
   this._handler = new EventStoreConnectionLogicHandler(this, settings);
 

src/gossipSeed.js

@@ -0,0 +1,13 @@
+module.exports = function GossipSeed(endPoint, hostName) {
+  if (typeof endPoint !== 'object' || !endPoint.hostname || !endPoint.port) throw new TypeError('endPoint must be have hostname and port properties.');
+  Object.defineProperties(this, {
+    endPoint: {
+      enumerable: true,
+      value: endPoint
+    },
+    hostName: {
+      enumerable: true,
+      value: hostName
+    }
+  });
+};

test/client_test.js

@@ -1,280 +0,0 @@
-var util = require('util');
-var uuid = require('uuid');
-var client = require('../src/client');
-var NoopLogger = require('../src/common/log/noopLogger');
-
-var consoleLogger = {
-  debug: function() {
-    var msg = util.format.apply(util, Array.prototype.slice.call(arguments));
-    util.log(msg);
-  },
-  info: function() {},
-  error: function() {}
-};
-
-function createRandomEvent() {
-  return client.createJsonEventData(uuid.v4(), {a: uuid.v4(), b: Math.random()}, {createdAt: Date.now()}, 'testEvent');
-}
-
-var testStreamName = 'test-' + uuid.v4();
-var userCredentialsForAll = new client.UserCredentials("admin", "changeit");
-
-function testEvent(test, event, expectedVersion) {
-  if (!event) return;
-  test.ok(event.event, "Event has no 'event'.");
-  if (!event.event) return;
-  test.ok(event.event.eventNumber === expectedVersion, util.format("Wrong expected version. Expected: %d Got: %d", event.event.eventNumber, expectedVersion));
-}
-
-module.exports = {
-  setUp: function(cb) {
-    var tcpEndPoint = {host: 'localhost', port: 1113};
-    var settings = {verboseLogging: false, log: new NoopLogger()};
-    //var settings = {verboseLogging: true, log: consoleLogger};
-    this.conn = client.EventStoreConnection.create(settings, tcpEndPoint);
-    this.connError = null;
-    var self = this;
-    this.conn.connect()
-        .catch(function(e) {
-          self.connError = e;
-          cb(e);
-        });
-    this.conn.on('connected', function() {
-      cb();
-    });
-  },
-  tearDown: function(cb) {
-    this.conn.close();
-    this.conn.on('closed', function() {
-      cb();
-    });
-    this.conn = null;
-  },
-/*
-  'Test Connection': function(test) {
-    test.ok(this.connError === null, "Connection error: " + this.connError);
-    test.done();
-  },
-  'Test Append To Stream': function(test) {
-    var events = [
-      createRandomEvent()
-    ];
-    this.conn.appendToStream(testStreamName, client.expectedVersion.any, events)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          test.done();
-        })
-        .catch(function (err) {
-          test.done(err);
-        });
-  },
-  'Test Commit Two Events Using Transaction': function(test) {
-    this.conn.startTransaction(testStreamName, client.expectedVersion.any)
-        .then(function(trx) {
-          test.ok(trx, "No transaction.");
-          return Promise.all([trx, trx.write([createRandomEvent()])]);
-        })
-        .then(function(args) {
-          var trx = args[0];
-          return Promise.all([trx, trx.write([createRandomEvent()])]);
-        })
-        .then(function(args) {
-          var trx = args[0];
-          return trx.commit();
-        })
-        .then(function(result) {
-          test.ok(result, "No result.");
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  },
-  'Test Read One Event': function(test) {
-    this.conn.readEvent(testStreamName, 0)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          if (result)
-            test.ok(result.event, "No event. " + result.status);
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  },
-  'Test Read Stream Forward': function(test) {
-    this.conn.readStreamEventsForward(testStreamName, 0, 100)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          if (result)
-            test.ok(result.events.length === 3, "Expecting 3 events, got " + result.events.length);
-          for(var i = 0; i < 3; i++)
-            testEvent(test, result.events[i], i);
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  },
-  'Test Read Stream Backward': function(test) {
-    this.conn.readStreamEventsBackward(testStreamName, 2, 100)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          if (result)
-            test.ok(result.events.length === 3, "Expecting 3 events, got " + result.events.length);
-          for(var i = 0; i < 3; i++)
-            testEvent(test, result.events[i], 2-i);
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  },
-  'Test Read All Forward': function(test) {
-    this.conn.readAllEventsForward(client.positions.start, 100, false, userCredentialsForAll)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          if (result)
-            test.ok(result.events.length >= 3, "Expecting at least 3 events, got " + result.events.length);
-          for(var i = 1; i < result.events.length; i++)
-            test.ok(result.events[i].originalPosition.compareTo(result.events[i-1].originalPosition) > 0,
-                    util.format("event[%d] position is not > event[%d] position.",
-                                result.events[i].originalPosition,
-                                result.events[i-1].originalPosition));
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  },
-  'Test Read All Backward': function(test) {
-    this.conn.readAllEventsBackward(client.positions.end, 100, false, userCredentialsForAll)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          if (result)
-            test.ok(result.events.length >= 3, "Expecting at least 3 events, got " + result.events.length);
-          for(var i = 1; i < result.events.length; i++)
-            test.ok(result.events[i].originalPosition.compareTo(result.events[i-1].originalPosition) < 0,
-                util.format("event[%d] position is not < event[%d] position.",
-                    result.events[i].originalPosition,
-                    result.events[i-1].originalPosition));
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  },
-  'Test Subscribe to Stream': function(test) {
-    var done = false;
-    function eventAppeared() {
-      if (!done) {
-        done = true;
-        test.done();
-      }
-    }
-    function subscriptionDropped() {
-      if (!done) {
-        done = true;
-        test.done();
-      }
-    }
-    var conn = this.conn;
-    this.conn.subscribeToStream(testStreamName, false, eventAppeared, subscriptionDropped)
-        .then(function(subscription) {
-          var events = [createRandomEvent()];
-          return conn.appendToStream(testStreamName, client.expectedVersion.any, events);
-        })
-        .catch(function(err) {
-          done = true;
-          test.done(err);
-        })
-  }
-  'Test Subscribe to All': function(test) {
-    var done = false;
-    function eventAppeared() {
-      if (!done) {
-        done = true;
-        test.done();
-      }
-    }
-    function subscriptionDropped() {
-      if (!done) {
-        done = true;
-        test.done();
-      }
-    }
-    var conn = this.conn;
-    this.conn.subscribeToAll(false, eventAppeared, subscriptionDropped, userCredentialsForAll)
-        .then(function(subscription) {
-          var events = [createRandomEvent()];
-          return conn.appendToStream(testStreamName, client.expectedVersion.any, events);
-        })
-        .catch(function(err) {
-          done = true;
-          test.done(err);
-        });
-  },
-  'Test Subscribe to Stream From': function(test) {
-    var self = this;
-    var liveProcessing = false;
-    var catchUpEvents = [];
-    var liveEvents = [];
-    function eventAppeared(s, e) {
-      if (liveProcessing) {
-        liveEvents.push(e);
-        s.stop();
-      } else {
-        catchUpEvents.push(e);
-      }
-    }
-    function liveProcessingStarted() {
-      liveProcessing = true;
-      var events = [createRandomEvent()];
-      self.conn.appendToStream(testStreamName, client.expectedVersion.any, events);
-    }
-    function subscriptionDropped(connection, reason, error) {
-      console.log(reason);
-      test.ok(liveEvents.length === 1, "Expecting 1 live event, got " + liveEvents.length);
-      test.ok(catchUpEvents.length >= 1, "Expecting at least 1 catchUp event, got " + catchUpEvents.length);
-      test.done(error);
-    }
-    this.conn.appendToStream(testStreamName, client.expectedVersion.noStream, )
-    var subscription = this.conn.subscribeToStreamFrom(testStreamName, null, false, eventAppeared, liveProcessingStarted, subscriptionDropped);
-  },
-  'Test Subscribe to All From': function(test) {
-    var self = this;
-    var liveProcessing = false;
-    var catchUpEvents = [];
-    var liveEvents = [];
-    function eventAppeared(s, e) {
-      if (liveProcessing) {
-        liveEvents.push(e);
-        s.stop();
-      } else {
-        catchUpEvents.push(e);
-      }
-    }
-    function liveProcessingStarted() {
-      liveProcessing = true;
-      var events = [createRandomEvent()];
-      self.conn.appendToStream(testStreamName, client.expectedVersion.any, events);
-    }
-    function subscriptionDropped(connection, reason, error) {
-      test.ok(liveEvents.length === 1, "Expecting 1 live event, got " + liveEvents.length);
-      test.ok(catchUpEvents.length > 1, "Expecting at least 1 catchUp event, got " + catchUpEvents.length);
-      test.done(error);
-    }
-    var subscription = this.conn.subscribeToAllFrom(null, false, eventAppeared, liveProcessingStarted, subscriptionDropped, userCredentialsForAll);
-  },*/
-  /*,
-  'Test Delete Stream': function(test) {
-    this.conn.deleteStream(testStreamName, client.expectedVersion.any)
-        .then(function(result) {
-          test.ok(result, "No result.");
-          test.done();
-        })
-        .catch(function(err) {
-          test.done(err);
-        });
-  }*/
-};

test/common/base_test.js

@@ -12,12 +12,11 @@ if (process.env.TESTS_VERBOSE_LOGGING === '1') {
   settings.log = new FileLogger('test-verbose.log');
 }
 
-var tcpEndPoint = {host: 'localhost', port: 1113};
+var tcpEndPoint = {hostname: 'localhost', port: 1112};
 
 function setUp(cb) {
   this.log = settings.log;
   this.testStreamName = 'test-' + uuid.v4();
-  this.log.info('A', this.testStreamName);
   var connected = false;
   this.conn = client.EventStoreConnection.create(settings, tcpEndPoint);
   this.conn.connect()

test/connection_test.js

@@ -1,10 +1,11 @@
 var client = require('../src/client.js');
+var GossipSeed = require('../src/gossipSeed');
 
 var testBase = require('./common/base_test');
 
 module.exports = {
   'Connect To Endpoint Happy Path': function(test) {
-    var tcpEndpoint = {hostname: 'localhost', port: 1113};
+    var tcpEndpoint = {hostname: 'localhost', port: 1112};
     var conn = client.EventStoreConnection.create(testBase.settings(), tcpEndpoint);
     conn.connect()
         .catch(function(err) {
@@ -23,7 +24,7 @@ module.exports = {
     }
   },
   'Connect To Endpoint That Doesn\'t Exist': function(test) {
-    var tcpEndpoint = {hostname: 'localhost', port: 1114};
+    var tcpEndpoint = {hostname: 'localhost', port: 11112};
     var conn = client.EventStoreConnection.create(testBase.settings({maxReconnections:1}), tcpEndpoint);
     conn.connect()
         .catch(function (err) {
@@ -40,6 +41,30 @@ module.exports = {
       test.ok(reason.indexOf("Reconnection limit reached") === 0, "Wrong expected reason.");
       test.done();
     });
+  },
+  'Connect to Cluster using gossip seeds': function (test) {
+    test.expect(1);
+    var gossipSeeds = [
+      new GossipSeed({hostname: 'localhost', port: 1113}),
+      new GossipSeed({hostname: 'localhost', port: 2113}),
+      new GossipSeed({hostname: 'localhost', port: 3113})
+    ];
+    var conn = client.EventStoreConnection.create(testBase.settings(), gossipSeeds);
+    conn.connect()
+      .catch(function(err) {
+        test.done(err);
+      });
+    conn.on('connected', function(endPoint){
+      test.ok(endPoint, "no endpoint");
+      done();
+    });
+    conn.on('error', done);
+
+    function done(err) {
+      conn.close();
+      if (err) return test.done(err);
+      test.done();
+    }
   }
 };