nicdex/node-eventstore-client
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

handle eventAppeared callback returning Promise

Browse Source
This commit is contained in:
Nicolas Dextraze
2017-07-16 17:11:54 -07:00
parent 0b968c40e8
commit 7c94e26055
12 changed files with 269 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
src/eventStorePersistentSubscriptionBase.js
View File

@ -112,6 +112,14 @@ EventStorePersistentSubscriptionBase.prototype._enqueue = function(resolvedEvent
}
};
function runAsync(fn) {
try {
return Promise.resolve(fn());
} catch(e) {
return Promise.reject(e);
}
}
EventStorePersistentSubscriptionBase.prototype._processQueue = function() {
var ev = this._queue.shift();
if (!ev) {
@ -132,24 +140,28 @@ EventStorePersistentSubscriptionBase.prototype._processQueue = function() {
this._isProcessing = false;
return;
}
try
{
this._eventAppeared(this, ev);
if(this._autoAck)
this._subscription.notifyEventsProcessed([ev.originalEvent.eventId]);
if (this._verbose)
this._log.debug("Persistent Subscription to %s: processed event (%s, %d, %s @ %d).",
this._streamId, ev.originalEvent.eventStreamId, ev.originalEvent.eventNumber, ev.originalEvent.eventType,
var self = this;
runAsync(function() {
return self._eventAppeared(self, ev);
})
.then(function() {
if(self._autoAck)
self._subscription.notifyEventsProcessed([ev.originalEvent.eventId]);
if (self._verbose)
self._log.debug("Persistent Subscription to %s: processed event (%s, %d, %s @ %d).",
self._streamId, ev.originalEvent.eventStreamId, ev.originalEvent.eventNumber, ev.originalEvent.eventType,
ev.originalEventNumber);
}
catch (err)
{
//TODO GFY should we autonak here?
this._dropSubscription(SubscriptionDropReason.EventHandlerException, err);
this._isProcessing = false;
return;
}
setImmediate(this._processQueue.bind(this));
return false;
}, function(err) {
//TODO GFY should we autonak here?
self._dropSubscription(SubscriptionDropReason.EventHandlerException, err);
self._isProcessing = false;
return true;
})
.then(function (faulted) {
if (faulted) return;
self._processQueue();
});
};
EventStorePersistentSubscriptionBase.prototype._dropSubscription = function(reason, error) {
@ -162,8 +174,13 @@ EventStorePersistentSubscriptionBase.prototype._dropSubscription = function(reas
if (this._subscription !== null)
this._subscription.unsubscribe();
if (this._subscriptionDropped !== null)
this._subscriptionDropped(this, reason, error);
if (this._subscriptionDropped !== null) {
try {
this._subscriptionDropped(this, reason, error);
} catch (e) {
this._log.error(e, "Persistent Subscription to %s: subscriptionDropped callback failed.", this._streamId);
}
}
this._stopped = true;
}
};