node-eventstore-client/lib/dist.js

A port of the EventStore .Net ClientAPI to Node.js

/******/ (() => { // webpackBootstrap
/******/ 	var __webpack_modules__ = ([
/* 0 */,
/* 1 */
/***/ ((module) => {

const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
function isValidId(id) {
  if (typeof id !== 'string') return false;
  return uuidRegex.test(id);
}

/**
 * Create an EventData
 * @private
 * @param {string} eventId
 * @param {string} type
 * @param {boolean} [isJson]
 * @param {Buffer} [data]
 * @param {Buffer} [metadata]
 * @constructor
 */
function EventData(eventId, type, isJson, data, metadata) {
  if (!isValidId(eventId)) throw new TypeError("eventId must be a string containing a UUID.");
  if (typeof type !== 'string' || type === '') throw new  TypeError("type must be a non-empty string.");
  if (isJson && typeof isJson !== 'boolean') throw new TypeError("isJson must be a boolean.");
  if (data && !Buffer.isBuffer(data)) throw new TypeError("data must be a Buffer.");
  if (metadata && !Buffer.isBuffer(metadata)) throw new TypeError("metadata must be a Buffer.");

  this.eventId = eventId;
  this.type = type;
  this.isJson = isJson || false;
  this.data = data || Buffer.alloc(0);
  this.metadata = metadata || Buffer.alloc(0);
  Object.freeze(this);
}

module.exports = EventData;


/***/ }),
/* 2 */
/***/ ((__unused_webpack_module, exports, __webpack_require__) => {

var guidParse = __webpack_require__(3);
var Long = __webpack_require__(4);
var ensure = __webpack_require__(5);

/**
 * @public
 * @param {!number|!Long} commitPosition
 * @param {!number|!Long} preparePosition
 * @constructor
 * @property {!Long} commitPosition
 * @property {!Long} preparePosition
 */
function Position(commitPosition, preparePosition) {
  ensure.notNull(commitPosition, "commitPosition");
  ensure.notNull(preparePosition, "preparePosition");
  this.commitPosition = Long.fromValue(commitPosition);
  this.preparePosition = Long.fromValue(preparePosition);
  Object.freeze(this);
}

Position.prototype.compareTo = function(other) {
  if (this.commitPosition.lt(other.commitPosition) || (this.commitPosition.eq(other.commitPosition)&& this.preparePosition.lt(other.preparePosition))) {
    return -1;
  }
  if (this.commitPosition.gt(other.commitPosition) || (this.commitPosition.eq(other.commitPosition) && this.preparePosition.gt(other.preparePosition))) {
    return 1;
  }
  return 0;
};

Position.prototype.toString = function() {
  return [this.commitPosition.toString(), this.preparePosition.toString()].join("/");
};

Position.start = new Position(0,0);
Position.end = new Position(-1,-1);

const EventReadStatus = Object.freeze({
  Success: 'success',
  NotFound: 'notFound',
  NoStream: 'noStream',
  StreamDeleted: 'streamDeleted'
});

/**
 * @param {object} ev
 * @constructor
 * @property {string} eventStreamId
 * @property {string} eventId
 * @property {Long} eventNumber
 * @property {string} eventType
 * @property {Date} created
 * @property {number} createdEpoch
 * @property {?Buffer} data
 * @property {?Buffer} metadata
 * @property {boolean} isJson
 */
function RecordedEvent(ev) {
  this.eventStreamId = ev.eventStreamId;
  this.eventId = guidParse.unparse(ev.eventId);
  this.eventNumber = ev.eventNumber;
  this.eventType = ev.eventType;
  this.created = new Date(ev.createdEpoch ? ev.createdEpoch.toNumber() : 0);
  this.createdEpoch = ev.createdEpoch ? ev.createdEpoch.toNumber() : 0;
  this.data = ev.data ? ev.data : Buffer.alloc(0);
  this.metadata = ev.metadata ? ev.metadata : Buffer.alloc(0);
  this.isJson = ev.dataContentType === 1;
  Object.freeze(this);
}

/**
 * @param {object} ev
 * @constructor
 * @property {?RecordedEvent} event
 * @property {?RecordedEvent} link
 * @property {?RecordedEvent} originalEvent
 * @property {boolean} isResolved
 * @property {?Position} originalPosition
 * @property {string} originalStreamId
 * @property {Long} originalEventNumber
 */
function ResolvedEvent(ev) {
  this.event = ev.event === null ? null : new RecordedEvent(ev.event);
  this.link = ev.link === null ? null : new RecordedEvent(ev.link);
  this.originalEvent = this.link || this.event;
  this.isResolved = this.link !== null && this.event !== null;
  this.originalPosition = (ev.commitPosition && ev.preparePosition) ? new Position(ev.commitPosition, ev.preparePosition) : null;
  this.originalStreamId = this.originalEvent && this.originalEvent.eventStreamId;
  this.originalEventNumber = this.originalEvent && this.originalEvent.eventNumber;
  Object.freeze(this);
}

/**
 *
 * @param {string} status
 * @param {string} stream
 * @param {Long} eventNumber
 * @param {object} event
 * @constructor
 * @property {string} status
 * @property {string} stream
 * @property {Long} eventNumber
 * @property {ResolvedEvent} event
 */
function EventReadResult(status, stream, eventNumber, event) {
  this.status = status;
  this.stream = stream;
  this.eventNumber = eventNumber;
  this.event = status === EventReadStatus.Success ? new ResolvedEvent(event) : null;
  Object.freeze(this);
}

/**
 * @param {number} nextExpectedVersion
 * @param {Position} logPosition
 * @constructor
 * @property {Long} nextExpectedVersion
 * @property {Position} logPosition
 */
function WriteResult(nextExpectedVersion, logPosition) {
  this.nextExpectedVersion = nextExpectedVersion;
  this.logPosition = logPosition;
  Object.freeze(this);
}

/**
 * @param {string} status
 * @param {string} stream
 * @param {Long} fromEventNumber
 * @param {string} readDirection
 * @param {object[]} events
 * @param {Long} nextEventNumber
 * @param {Long} lastEventNumber
 * @param {boolean} isEndOfStream
 * @constructor
 * @property {string} status
 * @property {string} stream
 * @property {Long} fromEventNumber
 * @property {string} readDirection
 * @property {ResolvedEvent[]} events
 * @property {Long} nextEventNumber
 * @property {Long} lastEventNumber
 * @property {boolean} isEndOfStream
 */
function StreamEventsSlice(
    status, stream, fromEventNumber, readDirection, events, nextEventNumber, lastEventNumber, isEndOfStream
) {
  this.status = status;
  this.stream = stream;
  this.fromEventNumber = fromEventNumber;
  this.readDirection = readDirection;
  this.events = events ? events.map(function(ev) { return new ResolvedEvent(ev); }) : [];
  this.nextEventNumber = nextEventNumber;
  this.lastEventNumber = lastEventNumber;
  this.isEndOfStream = isEndOfStream;
  Object.freeze(this);
}

/**
 * @param {string} readDirection
 * @param {Position} fromPosition
 * @param {Position} nextPosition
 * @param {ResolvedEvent[]} events
 * @constructor
 * @property {string} readDirection
 * @property {Position} fromPosition
 * @property {Position} nextPosition
 * @property {ResolvedEvent[]} events
 */
function AllEventsSlice(readDirection, fromPosition, nextPosition, events) {
  this.readDirection = readDirection;
  this.fromPosition = fromPosition;
  this.nextPosition = nextPosition;
  this.events = events ? events.map(function(ev){ return new ResolvedEvent(ev); }) : [];
  this.isEndOfStream = events === null || events.length === 0;
  Object.freeze(this);
}

/**
 * @param {Position} logPosition
 * @constructor
 * @property {Position} logPosition
 */
function DeleteResult(logPosition) {
  this.logPosition = logPosition;
  Object.freeze(this);
}

/**
 * @param {string} stream
 * @param {boolean} isStreamDeleted
 * @param {Long} metastreamVersion
 * @param {object} streamMetadata
 * @constructor
 * @property {string} stream
 * @property {boolean} isStreamDeleted
 * @property {Long} metastreamVersion
 * @property {object} streamMetadata
 */
function RawStreamMetadataResult(stream, isStreamDeleted, metastreamVersion, streamMetadata) {
  ensure.notNullOrEmpty(stream);
  this.stream = stream;
  this.isStreamDeleted = isStreamDeleted;
  this.metastreamVersion = metastreamVersion;
  this.streamMetadata = streamMetadata;
  Object.freeze(this);
}

const PersistentSubscriptionCreateStatus = Object.freeze({
  Success: 'success',
  NotFound: 'notFound',
  Failure: 'failure'
});

/**
 * @param {string} status
 * @constructor
 * @property {string} status
 */
function PersistentSubscriptionCreateResult(status) {
  this.status = status;
  Object.freeze(this);
}

const PersistentSubscriptionUpdateStatus = Object.freeze({
  Success: 'success',
  NotFound: 'notFound',
  Failure: 'failure',
  AccessDenied: 'accessDenied'
});

/**
 * @param {string} status
 * @constructor
 * @property {string} status
 */
function PersistentSubscriptionUpdateResult(status) {
  this.status = status;
  Object.freeze(this);
}

const PersistentSubscriptionDeleteStatus = Object.freeze({
  Success: 'success',
  Failure: 'failure'
});

/**
 * @param {string} status
 * @constructor
 * @property {string} status
 */
function PersistentSubscriptionDeleteResult(status) {
  this.status = status;
  Object.freeze(this);
}

// Exports Constructors
exports.Position = Position;
exports.ResolvedEvent = ResolvedEvent;
exports.EventReadStatus = EventReadStatus;
exports.EventReadResult = EventReadResult;
exports.WriteResult = WriteResult;
exports.StreamEventsSlice = StreamEventsSlice;
exports.AllEventsSlice = AllEventsSlice;
exports.DeleteResult = DeleteResult;
exports.RawStreamMetadataResult = RawStreamMetadataResult;
exports.PersistentSubscriptionCreateResult = PersistentSubscriptionCreateResult;
exports.PersistentSubscriptionCreateStatus = PersistentSubscriptionCreateStatus;
exports.PersistentSubscriptionUpdateResult = PersistentSubscriptionUpdateResult;
exports.PersistentSubscriptionUpdateStatus = PersistentSubscriptionUpdateStatus;
exports.PersistentSubscriptionDeleteResult = PersistentSubscriptionDeleteResult;
exports.PersistentSubscriptionDeleteStatus = PersistentSubscriptionDeleteStatus;


/***/ }),
/* 3 */
/***/ ((__unused_webpack_module, exports) => {

"use strict";


// Maps for number <-> hex string conversion
var _byteToHex = [];
var _hexToByte = {};
for (var i = 0; i < 256; i++) {
  _byteToHex[i] = (i + 0x100).toString(16).substr(1);
  _hexToByte[_byteToHex[i]] = i;
}

// **`parse()` - Parse a UUID into it's component bytes**
function parse(s, buf, offset) {
  const i = (buf && offset) || 0;
  var ii = 0;

  if (buf) buf.fill(0, i, i + 16);
  buf = buf || Buffer.alloc(16);
  s.toLowerCase().replace(/[0-9a-f]{2}/g, function(oct) {
    if (ii < 16) { // Don't overflow!
      buf[i + ii++] = _hexToByte[oct];
    }
  });

  var buf2 = Buffer.from(buf.slice(i, i + 16));
  buf[i + 0] = buf2[3];
  buf[i + 1] = buf2[2];
  buf[i + 2] = buf2[1];
  buf[i + 3] = buf2[0];
  buf[i + 4] = buf2[5];
  buf[i + 5] = buf2[4];
  buf[i + 6] = buf2[7];
  buf[i + 7] = buf2[6];

  return buf;
}

// **`unparse()` - Convert UUID byte array (ala parse()) into a string**
function unparse(buf, offset) {
  var i = offset || 0;
  return '03020100-0504-0706-0809-101112131415'.replace(/\d{2}/g, function (num) {
    var j = parseInt(num, 10);
    return _byteToHex[buf[i+j]];
  })
}

exports.parse = parse;
exports.unparse = unparse;


/***/ }),
/* 4 */
/***/ ((module) => {

"use strict";
module.exports = require("long");

/***/ }),
/* 5 */
/***/ ((module, __unused_webpack_exports, __webpack_require__) => {

var Long = __webpack_require__(4);

module.exports.notNullOrEmpty = function(value, name) {
  if (value === null) throw new TypeError(name + " should not be null.");
  if (value === '') throw new Error(name + " should not be empty.");
};

module.exports.notNull = function(value, name) {
  if (value === null) throw new TypeError(name + " should not be null.");
};

function isInteger(value, name) {
  if (typeof value !== 'number' || value % 1 !== 0) throw new TypeError(name + " should be an integer.");
}
module.exports.isInteger = isInteger;

module.exports.isLongOrInteger = function(value, name) {
  if (typeof value === 'number') {
    return isInteger(value, name);
  } else if (!Long.isLong(value)) {
    throw new TypeError(name + " should be a Long|number.");
  }
};

module.exports.isArrayOf = function(expectedType, value, name) {
  if (!Array.isArray(value)) throw new TypeError(name + " should be an array.");
  if (!value.every(function(x) { return x instanceof expectedType; })) {
    throw new TypeError([name, " should be an array of ", expectedType.name, "."].join(""));
  }
};

module.exports.isTypeOf = function(expectedType, value, name, nullAllowed) {
  if (nullAllowed && value === null) return;
  if (!(value instanceof expectedType)) {
    throw new TypeError([name, " should be of type '", expectedType.name, "'", nullAllowed ? " or null" : "", "."].join(""));
  }
};

module.exports.positive = function(value, name) {
  if (value <= 0) throw new Error(name + " should be positive.");
};

module.exports.nonNegative = function(value, name) {
  if (value < 0) throw new Error(name + " should be non-negative.");
};

/***/ }),
/* 6 */
/***/ ((module, __unused_webpack_exports, __webpack_require__) => {

var ensure = __webpack_require__(5);

/**
 * @param {string} username
 * @param {string} password
 * @constructor
 * @property {string} username
 * @property {string} password
 */
function UserCredentials(username, password) {
  ensure.notNullOrEmpty(username, 'username');
  ensure.notNullOrEmpty(password, 'password');
  this.username = username;
  this.password = password;
  Object.freeze(this);
}

module.exports = UserCredentials;

/***/ }),
/* 7 */
/***/ ((module, __unused_webpack_exports, __webpack_require__) => {

var SystemConsumerStrategies = __webpack_require__(8);
var ensure = __webpack_require__(5);
var Long = __webpack_require__(4);

function PersistentSubscriptionSettings(
  resolveLinkTos, startFrom, extraStatistics, messageTimeout,
  maxRetryCount, liveBufferSize, readBatchSize, historyBufferSize,
  checkPointAfter, minCheckPointCount, maxCheckPointCount,
  maxSubscriberCount, namedConsumerStrategy
) {
  ensure.isLongOrInteger(startFrom);
  startFrom = Long.fromValue(startFrom);

  this.resolveLinkTos = resolveLinkTos;
  this.startFrom = startFrom;
  this.extraStatistics = extraStatistics;
  this.messageTimeout = messageTimeout;
  this.maxRetryCount = maxRetryCount;
  this.liveBufferSize = liveBufferSize;
  this.readBatchSize = readBatchSize;
  this.historyBufferSize = historyBufferSize;
  this.checkPointAfter = checkPointAfter;
  this.minCheckPointCount = minCheckPointCount;
  this.maxCheckPointCount = maxCheckPointCount;
  this.maxSubscriberCount = maxSubscriberCount;
  this.namedConsumerStrategy = namedConsumerStrategy;
}

PersistentSubscriptionSettings.create = function() {
  return new PersistentSubscriptionSettings(false, -1, false, 30000, 500, 500, 10, 20, 2000, 10, 1000, 0, SystemConsumerStrategies.RoundRobin);
};

module.exports = PersistentSubscriptionSettings;

/***/ }),
/* 8 */
/***/ ((module) => {

const SystemConsumerStrategies = Object.freeze({
  DispatchToSingle: 'DispatchToSingle',
  RoundRobin: 'RoundRobin',
  Pinned: 'Pinned'
});

module.exports = SystemConsumerStrategies;

/***/ }),
/* 9 */
/***/ ((module) => {

function GossipSeed(endPoint, hostName, hostHeader) {
  if (typeof endPoint !== 'object' || !endPoint.host || !endPoint.port) throw new TypeError('endPoint must be have host and port properties.');
  this.endPoint = endPoint;
  this.hostName = hostName;
  this.hostHeader = hostHeader;
  Object.freeze(this);
}

module.exports = GossipSeed;

/***/ }),
/* 10 */
/***/ ((module, __unused_webpack_exports, __webpack_require__) => {

var EventStoreNodeConnection = __webpack_require__(11);
var StaticEndpointDiscoverer = __webpack_require__(69);
var ClusterDiscoverer = __webpack_require__(70);
var NoopLogger = __webpack_require__(75);
var ensure = __webpack_require__(5);

const util = __webpack_require__(12);
const http = __webpack_require__(76);
const https = __webpack_require__(77);
const dns = __webpack_require__(78);

const dnsService = {
  lookup : util.promisify(dns.lookup),
  ADDRCONFIG: dns.ADDRCONFIG,
  V4MAPPED: dns.V4MAPPED
};

var defaultConnectionSettings = Object.freeze({
  log: new NoopLogger(),
  verboseLogging: false,

  maxQueueSize: 5000,
  maxConcurrentItems: 5000,
  maxRetries: 10,
  maxReconnections: 10,

  requireMaster: true,

  reconnectionDelay: 100,
  operationTimeout: 7*1000,
  operationTimeoutCheckPeriod: 1000,

  defaultUserCredentials: null,
  useSslConnection: false,
  targetHost: null,
  validateServer: false,

  failOnNoServerResponse: false,
  heartbeatInterval: 750,
  heartbeatTimeout: 1500,
  clientConnectionTimeout: 1000,

  // Cluster Settings
  clusterDns: '',
  maxDiscoverAttempts: 10,
  discoverDelay: 500,
  externalGossipPort: 0,
  gossipTimeout: 1000
});


function merge(a,b) {
  var c = {};
  Object.getOwnPropertyNames(a).forEach(function(k) {
    c[k] = a[k];
  });
  Object.getOwnPropertyNames(b).forEach(function(k) {
    c[k] = b[k];
  });
  return c;
}

function createFromTcpEndpoint(settings, tcpEndpoint, connectionName) {
  if (!tcpEndpoint.port || !tcpEndpoint.host) throw new TypeError('endPoint object must have host 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 host = m[2] || null;
  var port = m[3] ? parseInt(m[3]) : null;
  if (scheme === 'tcp') {
    var tcpEndpoint = {
      host: host,
      port: port || 1113
    };
    return createFromTcpEndpoint(settings, tcpEndpoint, connectionName);
  }
  if (scheme === 'discover') {
    return createFromClusterDns(settings, host, port || 2113, connectionName);
  }
  throw new Error('Invalid scheme for endPoint: ' + scheme);
}

function createFromClusterDns(connectionSettings, clusterDns, externalGossipPort, connectionName) {
  ensure.notNull(connectionSettings, "connectionSettings");
  ensure.notNull(clusterDns, "clusterDns");
  var mergedSettings = merge(defaultConnectionSettings, connectionSettings || {});
  var clusterSettings = {
    clusterDns: clusterDns,
    seeds: null,
    managerExternalHttpPort: externalGossipPort,
    maxDiscoverAttempts: mergedSettings.maxDiscoverAttempts,
    discoverDelay: mergedSettings.discoverDelay,
    gossipTimeout: mergedSettings.gossipTimeout,
    rejectUnauthorized: connectionSettings.useSslConnection ? connectionSettings.validateServer : undefined
  };
  var endPointDiscoverer = new ClusterDiscoverer(
    mergedSettings.log,
    clusterSettings,
    dnsService,
    connectionSettings.useSslConnection ? https : http
  );
  return new EventStoreNodeConnection(mergedSettings, clusterSettings, endPointDiscoverer, connectionName);
}

function createFromGossipSeeds(connectionSettings, gossipSeeds, connectionName) {
  ensure.notNull(connectionSettings, "connectionSettings");
  ensure.notNull(gossipSeeds, "gossipSeeds");
  var mergedSettings = merge(defaultConnectionSettings, connectionSettings || {});
  var clusterSettings = {
    clusterDns: '',
    seeds: gossipSeeds,
    externalGossipPort: 0,
    maxDiscoverAttempts: mergedSettings.maxDiscoverAttempts,
    discoverDelay: mergedSettings.discoverDelay,
    gossipTimeout: mergedSettings.gossipTimeout,
    rejectUnauthorized: connectionSettings.useSslConnection ? connectionSettings.validateServer : undefined
  };
  var endPointDiscoverer = new ClusterDiscoverer(
    mergedSettings.log,
    clusterSettings,
    dnsService,
    connectionSettings.useSslConnection ? https : http
  );
  return new EventStoreNodeConnection(mergedSettings, clusterSettings, endPointDiscoverer, connectionName);
}

/**
 * Create an EventStore connection
 * @public
 * @alias createConnection
 * @param {object} settings
 * @param {boolean} [settings.verboseLogging=false]
 * @param {number} [settings.maxQueueSize=5000]
 * @param {number} [settings.maxConcurrentItems=5000]
 * @param {number} [settings.maxRetries=10]
 * @param {number} [settings.maxReconnections=10]
 * @param {boolean} [settings.requireMaster=true]
 * @param {number} [settings.reconnectionDelay=100]
 * @param {number} [settings.operationTimeout=7000]
 * @param {number} [settings.operationTimeoutCheckPeriod=1000]
 * @param {object} [settings.defaultUserCredentials=null] - The default user credentials to use for requests
 * @param {boolean} [settings.useSslConnection=false] - Whether to use SSL or not
 * @param {object} [settings.targetHost=null]
 * @param {boolean} [settings.validateServer=false]
 * @param {boolean} [settings.failOnNoServerResponse=false]
 * @param {number} [settings.heartbeatInterval=750]
 * @param {number} [settings.heartbeatTimeout=1500]
 * @param {number} [settings.clientConnectionTimeout=1000]
 * @param {string} [settings.clusterDns='']
 * @param {number} [settings.maxDiscoverAttempts=10]
 * @param {number} [settings.externalGossipPort=0]
 * @param {number} [settings.gossipTimeout=1000]
 * @param {string|object|array} endPointOrGossipSeeds
 * @param {string} [connectionName]
 * @returns {EventStoreNodeConnection}
 */
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.');
};


/***/ }),
/* 11 */
/***/ ((module, __unused_webpack_exports, __webpack_require__) => {

var util = __webpack_require__(12);
var uuid = __webpack_require__(13);
var Long = __webpack_require__(4);
var EventEmitter = (__webpack_require__(14).EventEmitter);
var ensure = __webpack_require__(5);

var messages = __webpack_require__(15);
var EventStoreConnectionLogicHandler = __webpack_require__(16);

var DeleteStreamOperation = __webpack_require__(40);
var AppendToStreamOperation = __webpack_require__(45);
var StartTransactionOperation = __webpack_require__(46);
var TransactionalWriteOperation = __webpack_require__(48);
var CommitTransactionOperation = __webpack_require__(49);
var ReadEventOperation = __webpack_require__(50);
var ReadStreamEventsForwardOperation = __webpack_require__(51);
var ReadStreamEventsBackwardOperation = __webpack_require__(55);
var ReadAllEventsForwardOperation = __webpack_require__(56);
var ReadAllEventsBackwardOperation = __webpack_require__(57);
var CreatePersistentSubscriptionOperation = __webpack_require__(58);
var UpdatePersistentSubscriptionOperation = __webpack_require__(59);
var DeletePersistentSubscriptionOperation = __webpack_require__(60);

var EventStoreTransaction = __webpack_require__(47);
var EventStoreStreamCatchUpSubscription = __webpack_require__(61);
var EventStoreAllCatchUpSubscription = __webpack_require__(63);
var EventStorePersistentSubscription = __webpack_require__(64);

var results = __webpack_require__(2);
var systemStreams = __webpack_require__(67);
var systemEventTypes = __webpack_require__(68);
var EventData = __webpack_require__(1);

const MaxReadSize = 4096;

/**
 * @protected
 * @constructor
 */
function EventStoreNodeConnection(settings, clusterSettings, endpointDiscoverer, connectionName) {
  EventEmitter.call(this);
  this._connectionName = connectionName || ['ES-', uuid.v4()].join('');
  this._settings = settings;
  this._clusterSettings = clusterSettings;
  this._endpointDiscoverer = endpointDiscoverer;
  this._handler = new EventStoreConnectionLogicHandler(this, settings);

  var self = this;
  this._handler.on('connected', function(e) {
    self.emit('connected', e);
  });
  this._handler.on('disconnected', function(e) {
    self.emit('disconnected', e);
  });
  this._handler.on('reconnecting', function(e) {
    self.emit('reconnecting', e);
  });
  this._handler.on('closed', function(e) {
    self.emit('closed', e);
  });
  this._handler.on('error', function(e) {
    self.emit('error', e);
  });
  this._handler.on('heartbeatInfo', function(e) {
    self.emit('heartbeatInfo', e);
  });
}
util.inherits(EventStoreNodeConnection, EventEmitter);

Object.defineProperty(EventStoreNodeConnection.prototype, 'connectionName', {
  get: function() {
    return this._connectionName;
  }
});

/**
 * Start connection task
 * @public
 * @returns {Promise}
 */
EventStoreNodeConnection.prototype.connect = function() {
  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err) {
      if (err) return reject(err);
      resolve();
    }
    var startConnectionMessage = new messages.StartConnectionMessage(cb, self._endpointDiscoverer);
    self._handler.enqueueMessage(startConnectionMessage);
  });
};

/**
 * Close connection
 * @public
 */
EventStoreNodeConnection.prototype.close = function() {
  this._handler.enqueueMessage(new messages.CloseConnectionMessage("Connection close requested by client.", null));
};

/**
 * Delete a stream (async)
 * @public
 * @param {string} stream
 * @param {Long|number} expectedVersion
 * @param {boolean} [hardDelete]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<DeleteResult>}
 */
EventStoreNodeConnection.prototype.deleteStream = function(stream, expectedVersion, hardDelete, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isLongOrInteger(expectedVersion, "expectedVersion");
  expectedVersion = Long.fromValue(expectedVersion);
  hardDelete = Boolean(hardDelete);
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }

    var deleteStreamOperation = new DeleteStreamOperation(
        self._settings.log, cb, self._settings.requireMaster, stream, expectedVersion, hardDelete, userCredentials);
    self._enqueueOperation(deleteStreamOperation);
  });
};

/**
 * Append events to a stream (async)
 * @public
 * @param {string} stream The name of the stream to which to append.
 * @param {Long|number} expectedVersion The version at which we currently expect the stream to be in order that an optimistic concurrency check can be performed.
 * @param {EventData[]|EventData} events The event(s) to append.
 * @param {UserCredentials} [userCredentials] User credentials
 * @returns {Promise.<WriteResult>}
 */
EventStoreNodeConnection.prototype.appendToStream = function(stream, expectedVersion, events, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isLongOrInteger(expectedVersion, "expectedVersion");
  expectedVersion = Long.fromValue(expectedVersion);
  if (!Array.isArray(events)) events = [events];
  ensure.isArrayOf(EventData, events, "events");
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new AppendToStreamOperation(self._settings.log, cb, self._settings.requireMaster, stream,
        expectedVersion, events, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Start a transaction (async)
 * @public
 * @param {string} stream
 * @param {Long|number} expectedVersion
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<EventStoreTransaction>}
 */
EventStoreNodeConnection.prototype.startTransaction = function(stream, expectedVersion, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isLongOrInteger(expectedVersion, "expectedVersion");
  expectedVersion = Long.fromValue(expectedVersion);
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new StartTransactionOperation(self._settings.log, cb, self._settings.requireMaster, stream,
        expectedVersion, self, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Continue a transaction
 * @public
 * @param {number} transactionId
 * @param {UserCredentials} userCredentials
 * @returns {EventStoreTransaction}
 */
EventStoreNodeConnection.prototype.continueTransaction = function(transactionId, userCredentials) {
  ensure.nonNegative(transactionId, "transactionId");

  return new EventStoreTransaction(transactionId, userCredentials, this);
};

EventStoreNodeConnection.prototype.transactionalWrite = function(transaction, events, userCredentials) {
  ensure.isTypeOf(EventStoreTransaction, transaction, "transaction");
  ensure.isArrayOf(EventData, events, "events");
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err) {
      if (err) return reject(err);
      resolve();
    }
    var operation = new TransactionalWriteOperation(self._settings.log, cb, self._settings.requireMaster,
        transaction.transactionId, events, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Commit a transaction
 * @public
 * @param transaction
 * @param userCredentials
 * @returns {Promise.<WriteResult>}
 */
EventStoreNodeConnection.prototype.commitTransaction = function(transaction, userCredentials) {
  ensure.isTypeOf(EventStoreTransaction, transaction, "transaction");

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new CommitTransactionOperation(self._settings.log, cb, self._settings.requireMaster,
        transaction.transactionId, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Read a single event (async)
 * @public
 * @param {string} stream
 * @param {Long|number} eventNumber
 * @param {boolean} [resolveLinkTos]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<EventReadResult>}
 */
EventStoreNodeConnection.prototype.readEvent = function(stream, eventNumber, resolveLinkTos, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isLongOrInteger(eventNumber, "eventNumber");
  eventNumber = Long.fromValue(eventNumber);
  resolveLinkTos = Boolean(resolveLinkTos);
  userCredentials = userCredentials || null;

  if (typeof stream !== 'string' || stream === '') throw new TypeError("stream must be an non-empty string.");
  if (eventNumber.compare(-1) < 0) throw new Error("eventNumber out of range.");
  if (resolveLinkTos && typeof resolveLinkTos !== 'boolean') throw new TypeError("resolveLinkTos must be a boolean.");

  var self = this;
  return new Promise(function(resolve, reject){
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new ReadEventOperation(self._settings.log, cb, stream, eventNumber, resolveLinkTos,
        self._settings.requireMaster, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Reading a specific stream forwards (async)
 * @public
 * @param {string} stream
 * @param {Long|number} start
 * @param {number} count
 * @param {boolean} [resolveLinkTos]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<StreamEventsSlice>}
 */
EventStoreNodeConnection.prototype.readStreamEventsForward = function(
    stream, start, count, resolveLinkTos, userCredentials
) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isLongOrInteger(start, "start");
  start = Long.fromValue(start);
  ensure.nonNegative(start, "start");
  ensure.isInteger(count, "count");
  ensure.positive(count, "count");
  if (count > MaxReadSize) throw new Error(util.format("Count should be less than %d. For larger reads you should page.", MaxReadSize));
  resolveLinkTos = Boolean(resolveLinkTos);
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new ReadStreamEventsForwardOperation(self._settings.log, cb, stream, start, count,
        resolveLinkTos, self._settings.requireMaster, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Reading a specific stream backwards (async)
 * @public
 * @param {string} stream
 * @param {Long|number} start
 * @param {number} count
 * @param {boolean} [resolveLinkTos]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<StreamEventsSlice>}
 */
EventStoreNodeConnection.prototype.readStreamEventsBackward = function(
    stream, start, count, resolveLinkTos, userCredentials
) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isLongOrInteger(start, "start");
  start = Long.fromValue(start);
  ensure.isInteger(count, "count");
  ensure.positive(count, "count");
  if (count > MaxReadSize) throw new Error(util.format("Count should be less than %d. For larger reads you should page.", MaxReadSize));
  resolveLinkTos = Boolean(resolveLinkTos);
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new ReadStreamEventsBackwardOperation(self._settings.log, cb, stream, start, count,
        resolveLinkTos, self._settings.requireMaster, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Reading all events forwards (async)
 * @public
 * @param {Position} position
 * @param {number} maxCount
 * @param {boolean} [resolveLinkTos]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<AllEventsSlice>}
 */
EventStoreNodeConnection.prototype.readAllEventsForward = function(
    position, maxCount, resolveLinkTos, userCredentials
) {
  ensure.isTypeOf(results.Position, position, "position");
  ensure.isInteger(maxCount, "maxCount");
  ensure.positive(maxCount, "maxCount");
  if (maxCount > MaxReadSize) throw new Error(util.format("Count should be less than %d. For larger reads you should page.", MaxReadSize));
  resolveLinkTos = Boolean(resolveLinkTos);
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new ReadAllEventsForwardOperation(self._settings.log, cb, position, maxCount,
        resolveLinkTos, self._settings.requireMaster, userCredentials);
    self._enqueueOperation(operation);
  });
};

/**
 * Reading all events backwards (async)
 * @public
 * @param {Position} position
 * @param {number} maxCount
 * @param {boolean} [resolveLinkTos]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<AllEventsSlice>}
 */
EventStoreNodeConnection.prototype.readAllEventsBackward = function(
    position, maxCount, resolveLinkTos, userCredentials
) {
  ensure.isTypeOf(results.Position, position, "position");
  ensure.isInteger(maxCount, "maxCount");
  ensure.positive(maxCount, "maxCount");
  if (maxCount > MaxReadSize) throw new Error(util.format("Count should be less than %d. For larger reads you should page.", MaxReadSize));
  resolveLinkTos = Boolean(resolveLinkTos);
  userCredentials = userCredentials || null;

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var operation = new ReadAllEventsBackwardOperation(self._settings.log, cb, position, maxCount,
        resolveLinkTos || false, self._settings.requireMaster, userCredentials || null);
    self._enqueueOperation(operation);
  });
};

/**
 * Subscribe to a stream (async)
 * @public
 * @param {!string} stream
 * @param {!boolean} resolveLinkTos
 * @param {function} eventAppeared
 * @param {function} [subscriptionDropped]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<EventStoreSubscription>}
 */
EventStoreNodeConnection.prototype.subscribeToStream = function(
    stream, resolveLinkTos, eventAppeared, subscriptionDropped, userCredentials
) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.isTypeOf(Function, eventAppeared, "eventAppeared");
  if (subscriptionDropped) ensure.isTypeOf(Function, subscriptionDropped, "subscriptionDropped");

  var self = this;
  return new Promise(function(resolve,reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    self._handler.enqueueMessage(
        new messages.StartSubscriptionMessage(
            cb, stream, !!resolveLinkTos, userCredentials || null, eventAppeared, subscriptionDropped || null,
            self._settings.maxRetries, self._settings.operationTimeout));
  });
};

/**
 * Subscribe to a stream from position
 * @public
 * @param {!string} stream
 * @param {?number|Position} lastCheckpoint
 * @param {!boolean} resolveLinkTos
 * @param {!function} eventAppeared
 * @param {function} [liveProcessingStarted]
 * @param {function} [subscriptionDropped]
 * @param {UserCredentials} [userCredentials]
 * @param {!number} [readBatchSize]
 * @returns {EventStoreStreamCatchUpSubscription}
 */
EventStoreNodeConnection.prototype.subscribeToStreamFrom = function(
    stream, lastCheckpoint, resolveLinkTos, eventAppeared, liveProcessingStarted, subscriptionDropped,
    userCredentials, readBatchSize
) {
  if (typeof stream !== 'string' || stream === '') throw new TypeError("stream must be a non-empty string.");
  if (lastCheckpoint !== null) {
    ensure.isLongOrInteger(lastCheckpoint);
    lastCheckpoint = Long.fromValue(lastCheckpoint);
  }
  if (typeof eventAppeared !== 'function') throw new TypeError("eventAppeared must be a function.");

  var catchUpSubscription =
      new EventStoreStreamCatchUpSubscription(this, this._settings.log, stream, lastCheckpoint,
          resolveLinkTos, userCredentials || null, eventAppeared,
          liveProcessingStarted || null, subscriptionDropped || null, this._settings.verboseLogging,
          readBatchSize);
  catchUpSubscription.start();
  return catchUpSubscription;
};

/**
 * Subscribe to all (async)
 * @public
 * @param {!boolean} resolveLinkTos
 * @param {!function} eventAppeared
 * @param {function} [subscriptionDropped]
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<EventStoreSubscription>}
 */
EventStoreNodeConnection.prototype.subscribeToAll = function(
    resolveLinkTos, eventAppeared, subscriptionDropped, userCredentials
) {
  if (typeof eventAppeared !== 'function') throw new TypeError("eventAppeared must be a function.");

  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    self._handler.enqueueMessage(
        new messages.StartSubscriptionMessage(
            cb, '', resolveLinkTos, userCredentials || null, eventAppeared, subscriptionDropped || null,
            self._settings.maxRetries, self._settings.operationTimeout));
  });
};

/**
 * Subscribe to all from
 * @public
 * @param {?Position} lastCheckpoint
 * @param {!boolean} resolveLinkTos
 * @param {!function} eventAppeared
 * @param {function} [liveProcessingStarted]
 * @param {function} [subscriptionDropped]
 * @param {UserCredentials} [userCredentials]
 * @param {!number} [readBatchSize]
 * @returns {EventStoreAllCatchUpSubscription}
 */
EventStoreNodeConnection.prototype.subscribeToAllFrom = function(
    lastCheckpoint, resolveLinkTos, eventAppeared, liveProcessingStarted, subscriptionDropped,
    userCredentials, readBatchSize
) {
  ensure.isTypeOf(results.Position, lastCheckpoint, "lastCheckpoint", true);
  ensure.isTypeOf(Function, eventAppeared, "eventAppeared", false);
  if (liveProcessingStarted) ensure.isTypeOf(Function, liveProcessingStarted, "liveProcessingStarted", false);
  if (subscriptionDropped) ensure.isTypeOf(Function, subscriptionDropped, "subscriptionDropped", false);

  var catchUpSubscription =
      new EventStoreAllCatchUpSubscription(this, this._settings.log, lastCheckpoint, resolveLinkTos,
          userCredentials || null, eventAppeared, liveProcessingStarted || null,
          subscriptionDropped || null, this._settings.verboseLogging, readBatchSize || 500);
  catchUpSubscription.start();
  return catchUpSubscription;
};

/**
 * Subscribe to a persistent subscription
 * @public
 * @param {string} stream
 * @param {string} groupName
 * @param {function} eventAppeared
 * @param {function} [subscriptionDropped]
 * @param {UserCredentials} [userCredentials]
 * @param {number} [bufferSize]
 * @param {boolean} [autoAck]
 * @return {Promise<EventStorePersistentSubscription>}
 */
EventStoreNodeConnection.prototype.connectToPersistentSubscription = function(
    stream, groupName, eventAppeared, subscriptionDropped, userCredentials, bufferSize, autoAck
) {
  ensure.notNullOrEmpty(groupName, "groupName");
  ensure.notNullOrEmpty(stream, "stream");
  ensure.notNull(eventAppeared, "eventAppeared");

  subscriptionDropped = subscriptionDropped || null;
  userCredentials = userCredentials || null;
  bufferSize = bufferSize === undefined ? 10 : bufferSize;
  autoAck = autoAck === undefined ? true : Boolean(autoAck);

  var subscription = new EventStorePersistentSubscription(
      groupName, stream, eventAppeared, subscriptionDropped, userCredentials, this._settings.log,
      this._settings.verboseLogging, this._settings, this._handler, bufferSize, autoAck);
  return subscription.start();
};

/**
 * Create a persistent subscription
 * @public
 * @param {string} stream
 * @param {string} groupName
 * @param {PersistentSubscriptionSettings} settings
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<PersistentSubscriptionCreateResult>}
 */
EventStoreNodeConnection.prototype.createPersistentSubscription = function(stream, groupName, settings, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.notNullOrEmpty(groupName, "groupName");
  ensure.notNull(settings, "settings");

  var self = this;
  return new Promise(function(resolve, reject){
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    self._enqueueOperation(
        new CreatePersistentSubscriptionOperation(self._settings.log, cb, stream, groupName, settings, userCredentials || null));
  });
};

/**
 * Update a persistent subscription
 * @public
 * @param {string} stream
 * @param {string} groupName
 * @param {PersistentSubscriptionSettings} settings
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<PersistentSubscriptionUpdateResult>}
 */
EventStoreNodeConnection.prototype.updatePersistentSubscription = function(stream, groupName, settings, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.notNullOrEmpty(groupName, "groupName");
  ensure.notNull(settings, "settings");
  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    self._enqueueOperation(
        new UpdatePersistentSubscriptionOperation(self._settings.log, cb, stream, groupName, settings, userCredentials || null));
  });
};

/**
 * Delete a persistent subscription
 * @public
 * @param {string} stream
 * @param {string} groupName
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<PersistentSubscriptionDeleteResult>}
 */
EventStoreNodeConnection.prototype.deletePersistentSubscription = function(stream, groupName, userCredentials) {
  ensure.notNullOrEmpty(stream, "stream");
  ensure.notNullOrEmpty(groupName, "groupName");
  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    self._enqueueOperation(
        new DeletePersistentSubscriptionOperation(self._settings.log, cb, stream, groupName, userCredentials || null));
  });
};

/**
 * Set stream metadata
 * @private
 */
EventStoreNodeConnection.prototype.setStreamMetadata = function() {
  //TODO: set stream metadata (non-raw)
  throw new Error("Not implemented.");
};

/**
 * Set stream metadata with raw object (async)
 * @public
 * @param {string} stream
 * @param {Long|number} expectedMetastreamVersion
 * @param {object} metadata
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<WriteResult>}
 */
EventStoreNodeConnection.prototype.setStreamMetadataRaw = function(
    stream, expectedMetastreamVersion, metadata, userCredentials
) {
  ensure.notNullOrEmpty(stream, "stream");
  if (systemStreams.isMetastream(stream)) {
    throw new Error(util.format("Setting metadata for metastream '%s' is not supported.", stream));
  }
  ensure.isLongOrInteger(expectedMetastreamVersion, "expectedMetastreamVersion");
  expectedMetastreamVersion = Long.fromValue(expectedMetastreamVersion);
  var self = this;
  return new Promise(function(resolve, reject) {
    function cb(err, result) {
      if (err) return reject(err);
      resolve(result);
    }
    var data = metadata ? Buffer.from(JSON.stringify(metadata)) : null;
    var metaevent = new EventData(uuid.v4(), systemEventTypes.StreamMetadata, true, data, null);
    self._enqueueOperation(
        new AppendToStreamOperation(self._settings.log, cb, self._settings.requireMaster,
                                    systemStreams.metastreamOf(stream), expectedMetastreamVersion,
                                    [metaevent], userCredentials));
  });
};

/**
 * Get stream metadata
 * @private
 * @param stream
 * @param userCredentials
 */
EventStoreNodeConnection.prototype.getStreamMetadata = function(stream, userCredentials) {
  //TODO: get stream metadata (non-raw)
  throw new Error("Not implemented.");
};

/**
 * Get stream metadata as raw object (async)
 * @public
 * @param {string} stream
 * @param {UserCredentials} [userCredentials]
 * @returns {Promise.<RawStreamMetadataResult>}
 */
EventStoreNodeConnection.prototype.getStreamMetadataRaw = function(stream, userCredentials) {
  return this.readEvent(systemStreams.metastreamOf(stream), -1, false, userCredentials)
      .then(function(res) {
        switch(res.status) {
          case results.EventReadStatus.Success:
            if (res.event === null) throw new Error("Event is null while operation result is Success.");
            var evnt = res.event.originalEvent;
            var version = evnt ? evnt.eventNumber : -1;
            var data = evnt ? JSON.parse(evnt.data.toString()) : null;
            return new results.RawStreamMetadataResult(stream, false, Long.fromValue(version), data);
          case results.EventReadStatus.NotFound:
          case results.EventReadStatus.NoStream:
            return new results.RawStreamMetadataResult(stream, false, Long.fromValue(-1), null);
          case results.EventReadStatus.StreamDeleted:
            return new results.RawStreamMetadataResult(stream, true, Long.fromValue(0x7fffffff), null);
          default:
            throw new Error(util.format("Unexpected ReadEventResult: %s.", res.status));
        }
      });
};

/**
 * Set system settings
 * @private
 */
EventStoreNodeConnection.prototype.setSystemSettings = function() {
  //TODO: set system settings
  throw new Error("Not implemented.");
};

EventStoreNodeConnection.prototype._enqueueOperation = function(operation) {
  var self = this;
  var message = new messages.StartOperationMessage(operation, self._settings.maxRetries, self._settings.operationTimeout);
  function tryEnqueue() {
    if (self._handler.totalOperationCount >= self._settings.maxQueueSize) {
      setTimeout(tryEnqueue, 0);
      return;
    }
    self._handler.enqueueMessage(message);
  }
  setImmediate(tryEnqueue)
};

module.exports = EventStoreNodeConnection;


/***/ }),
/* 12 */
/***/ ((module) => {

"use strict";
module.exports = require("util");

/***/ }),
/* 13 */
/***/ ((module) => {

"use strict";
module.exports = require("uuid");

/***/ }),
/* 14 */
/***/ ((module) => {

"use strict";
module.exports = require("events");

/***/ }),
/* 15 */
/***/ ((module, __unused_webpack_exports, __webpack_require__) => {

var util = __webpack_require__(12);

function Message() {
}
Message.prototype.toString = function() {
  return this.constructor.name;
};

function StartConnectionMessage(cb, endpointDiscoverer) {
  this.cb = cb;
  this.endpointDiscoverer = endpointDiscoverer;
}
util.inherits(StartConnectionMessage, Message);

function CloseConnectionMessage(reason, error) {
  this.reason = reason;
  this.error = error;
}
util.inherits(CloseConnectionMessage, Message);

function StartOperationMessage(operation, maxRetries, timeout) {
  this.operation = operation;
  this.maxRetries = maxRetries;
  this.timeout = timeout;
}
util.inherits(StartOperationMessage, Message);

function StartSubscriptionMessage(
    cb, streamId, resolveLinkTos, userCredentials, eventAppeared, subscriptionDropped, maxRetries, timeout
) {
  this.cb = cb;
  this.streamId = streamId;
  this.resolveLinkTos = resolveLinkTos;
  this.userCredentials = userCredentials;
  this.eventAppeared = eventAppeared;
  this.subscriptionDropped = subscriptionDropped;
  this.maxRetries = maxRetries;
  this.timeout = timeout;
}
util.inherits(StartSubscriptionMessage, Message);

/**
 * @private
 * @constructor
 * @property {object} endPoints
 * @property {object} endPoints.secureTcpEndPoint
 * @property {object} endPoints.tcpEndPoint
 */
function EstablishTcpConnectionMessage(endPoints) {
  this.endPoints = endPoints;
}
util.inherits(EstablishTcpConnectionMessage, Message);

function HandleTcpPackageMessage(connection, pkg) {
  this.connection = connection;
  this.package = pkg;
}
util