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Adding persistent subscription support

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This commit is contained in:
Nicolas Dextraze
2016-03-10 22:57:39 -08:00
parent 29f6bf210b
commit f1c3c42d46
25 changed files with 1939 additions and 117 deletions
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40
src/core/eventStoreConnectionLogicHandler.js
View File

@ -7,6 +7,7 @@ var TcpPackageConnection = require('../transport/tcp/tcpPackageConnection');
var OperationsManager = require('./operationsManager');
var SubscriptionsManager = require('./subscriptionsManager');
var VolatileSubscriptionOperation = require('../clientOperations/volatileSubscriptionOperation');
var ConnectToPersistentSubscriptionOperation = require('../clientOperations/connectToPersistentSubscriptionOperation');
var messages = require('./messages');
var TcpPackage = require('../systemData/tcpPackage');
@ -70,6 +71,9 @@ function EventStoreConnectionLogicHandler(esConnection, settings) {
this._queue.registerHandler(messages.StartSubscriptionMessage, function(msg) {
self._startSubscription(msg);
});
this._queue.registerHandler(messages.StartPersistentSubscriptionMessage, function(msg) {
self._startPersistentSubscription(msg);
});
this._queue.registerHandler(messages.EstablishTcpConnectionMessage, function(msg) {
self._establishTcpConnection(msg.endPoints);
@ -249,7 +253,7 @@ function createSubscriptionItem(operation, maxRetries, timeout) {
isSubscribed: false
};
subscriptionItem.toString = (function(){
return util.format("Subscription %s (%s): %s, is subscribed: %s, retry count: %d, created: %d, last updated: %d",
return util.format("Subscription %s (%s): %s, is subscribed: %s, retry count: %d, created: %s, last updated: %s",
this.operation.constructor.name, this.correlationId, this.operation, this.isSubscribed, this.retryCount,
new Date(this.createdTime).toISOString().substr(11,12),
new Date(this.lastUpdated).toISOString().substr(11,12));
@ -269,7 +273,9 @@ EventStoreConnectionLogicHandler.prototype._startSubscription = function(msg) {
var operation = new VolatileSubscriptionOperation(this._settings.log, msg.cb, msg.streamId, msg.resolveLinkTos,
msg.userCredentials, msg.eventAppeared, msg.subscriptionDropped,
this._settings.verboseLogging, function() { return self._connection });
this._logDebug("StartSubscription %s %s, %s, %d, %d.", operation.constructor.name, operation, msg.maxRetries, msg.timeout, this._state === ConnectionState.Connected ? "fire" : "enqueue");
this._logDebug("StartSubscription %s %s, %s, %d, %d.",
this._state === ConnectionState.Connected ? "fire" : "enqueue",
operation.constructor.name, operation, msg.maxRetries, msg.timeout);
var subscription = createSubscriptionItem(operation, msg.maxRetries, msg.timeout);
if (this._state === ConnectionState.Connecting)
this._subscriptions.enqueueSubscription(subscription);
@ -284,6 +290,34 @@ EventStoreConnectionLogicHandler.prototype._startSubscription = function(msg) {
}
};
EventStoreConnectionLogicHandler.prototype._startPersistentSubscription = function(msg) {
var self = this;
switch (this._state)
{
case ConnectionState.Init:
msg.cb(new Error(util.format("EventStoreConnection '%s' is not active.", this._esConnection.connectionName)));
break;
case ConnectionState.Connecting:
case ConnectionState.Connected:
var operation = new ConnectToPersistentSubscriptionOperation(this._settings.log, msg.cb, msg.subscriptionId,
msg.bufferSize, msg.streamId, msg.userCredentials, msg.eventAppeared, msg.subscriptionDropped,
this._settings.verboseLogging, function() { return self._connection });
this._logDebug("StartSubscription %s %s, %s, %d, %d.",
this._state === ConnectionState.Connected ? "fire" : "enqueue",
operation.constructor.name, operation, msg.maxRetries, msg.timeout);
var subscription = createSubscriptionItem(operation, msg.maxRetries, msg.timeout);
if (this._state === ConnectionState.Connecting)
this._subscriptions.enqueueSubscription(subscription);
else
this._subscriptions.startSubscription(subscription, this._connection);
break;
case ConnectionState.Closed:
msg.cb(new Error("Connection closed. " + this._esConnection.connectionName));
break;
default: throw new Error(util.format("Unknown state: %s.", this._state));
}
};
EventStoreConnectionLogicHandler.prototype._establishTcpConnection = function(endPoints) {
var endPoint = this._settings.useSslConnection ? endPoints.secureTcpEndPoint : endPoints.tcpEndPoint;
if (endPoint == null)
@ -397,7 +431,7 @@ EventStoreConnectionLogicHandler.prototype._tcpConnectionClosed = function(conne
this._state = ConnectionState.Connecting;
this._connectingPhase = ConnectingPhase.Reconnecting;
this._logDebug("TCP connection to [%j, L%j, %s] closed.", connection.remoteEndPoint, connection.localEndPoint, connection.connectionId);
this._logDebug("TCP connection to [%j, L%j, %s] closed. %s", connection.remoteEndPoint, connection.localEndPoint, connection.connectionId, error);
this._subscriptions.purgeSubscribedAndDroppedSubscriptions(this._connection.connectionId);
this._reconnInfo = {

20
src/core/messages.js
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@ -1,4 +1,5 @@
var util = require('util');
var ensure = require('../common/utils/ensure');
function Message() {
}
@ -76,6 +77,22 @@ util.inherits(TcpConnectionClosedMessage, Message);
function TimerTickMessage() {}
util.inherits(TimerTickMessage, Message);
function StartPersistentSubscriptionMessage(
cb, subscriptionId, streamId, bufferSize, userCredentials, eventAppeared, subscriptionDropped,
maxRetries, operationTimeout
) {
this.cb = cb;
this.subscriptionId = subscriptionId;
this.streamId = streamId;
this.bufferSize = bufferSize;
this.userCredentials = userCredentials;
this.eventAppeared = eventAppeared;
this.subscriptionDropped = subscriptionDropped;
this.maxRetries = maxRetries;
this.timeout = operationTimeout;
}
util.inherits(StartPersistentSubscriptionMessage, Message);
module.exports = {
StartConnectionMessage: StartConnectionMessage,
CloseConnectionMessage: CloseConnectionMessage,
@ -86,5 +103,6 @@ module.exports = {
TcpConnectionErrorMessage: TcpConnectionErrorMessage,
TcpConnectionEstablishedMessage: TcpConnectionEstablishedMessage,
TcpConnectionClosedMessage: TcpConnectionClosedMessage,
TimerTickMessage: TimerTickMessage
TimerTickMessage: TimerTickMessage,
StartPersistentSubscriptionMessage: StartPersistentSubscriptionMessage
};