Adobe Community : Popular Discussions - Event Gateways

Queueing with cflock on Coldfusion 9

forums_noreply@adobe.com — Wed, 23 Jun 2010 16:33:44 GMT

We've been dealing with a problem with our event gateways since we upgraded from ColdFusion 8 Enterprise to ColdFusion 9 Enterprise.

We have an event gateway setup to establish a connection to a third party. They went us updates at least every 10 seconds and sometimes many times a second.

We have a Java class configured as the Event Gateway listener, and it pushes events and data to a CFC function. In that function we actually use a *named* <cflock> to ensure that requests are dealt with in order, and requests will be queued at this point to have exclusive access to the named lock. This lock has a *30 second* timeout.

I've also got lots of debugging in this function, and I've noticed a few things:

Requests will queue up before the <cflock> tag, waiting for the lock, and this queue can be over 40 events long
All requests are processed when they get the lock within 6 seconds. The average is actually 1.5 to 2 sec from when they get the lock to when they complete processing

So the problem is that, now and again, I will have a lock timeout occur, and it's after 30 seconds. First I log if the request is waiting for the lock. It looks like this:

"Information","Thread-23","06/23/10","15:45:18","APP1","F4B42A5A-F34D-C614-DE01B150E6906F 78 (1277304318606) : PRE LOCK"

And then further down the logs, I see this for the same request:

"Error","Thread-23","06/23/10","15:45:48","APP1","F4B42A5A-F34D-C614-DE01B150E6906F78 (1277304348607) : LOCK ERROR: A timeout occurred while attempting to lock lock_ResponseDispatcher."

There's 30 seconds between them. The requests and any event data associated with it is lost at this point. Not good for me.

So I thought I'd see if the queue was being processed fast enough. I'm unsure how events are queued by <cflock>. Is there a hard limit?

Anyway, on this particular run, I saw that:

The request went onto the queue when there was 6 requests there already, so it's number 7 in the queuea

Over the next 30 seconds about 17 requests are removed from the queue

About the same number of requests are added to the queue

In this period, the request in question is not processed and after 30 seconds times out

I can't believe my eyes! It's as if the <cflock> queue is not processed as first in first out (FIFO), but first in last out (FILO)!

Is such a thing possible? Has anyone else every seen this kind of behaviour?

Many thanks in advance to anyone with any thoughts.

Ciaran

Event Gateway for Weblogic JMS

forums_noreply@adobe.com — Wed, 10 Mar 2010 18:13:00 GMT

Hi there, just learning about event gateways in Coldfusion. After a day playing and reading, I'm still unable to figure out if it is possible, using the default JMS and ActiveMQ event gateway type, to listen to a Oracle Weblogic JMS queue.

When trying to configure a JMS gateway instance to listen to Weblogic JMS queue, I get a "Gateway 'testJMS (examples.JMS.JMSGateway)' has taken more than 30 seconds to start." error. When I use the ActiveMQ gateway type, I get an "Could not create Transport. Reason: java.io.IOException: Transport scheme NOT recognized: [t3]".

I'm no expert on CF event gateway or Weblogic JMS messaging so would appreciate it if someone could tell me if this is even possible using the default supplied gateway types with CF8 or if a custom gateway type has to be built.

Thanks in advance everyone.

Directory watcher gateway stops seeing files added after working fine for awhile

forums_noreply@adobe.com — Wed, 17 Nov 2010 15:52:05 GMT

We have a directory watcher gateway that has worked quite well in the past, but over the past couple days has started having problems. What seems to happen is that the gateway cfc stops firing when a file is added to a directory. Stopping and restarting the gateway doesn't fix the problem. However we are running 4 instances on the server, so I removed the gateway from one instance and added it to another. Things started working again. Then the next day, the new gateway stopped working. Moved it back to the original instance, and it's working again.

We also have a scheduled task that cleans up files that the gateway misses, it runs every 3 minutes. The gateway does log some "file does not exist" errors but it seems to only happen when the scheduled task runs - that is, it seems like the gateway doesn't notice the files until another process tries to do something with them!

Incidentally we have been doing a pretty high volume of traffic lately and the server has had some other issues (another process has brought it down multiple times in the past week) - so the server has actually been restarted a few times lately (it's in a cluster of 2). I'm not sure how these things would really affect the gateway's operaion though.

Does anyone know what might be going on here? Thanks in advance!

OpenMQ ColdFusion JMS Gateway

forums_noreply@adobe.com — Sun, 04 Dec 2011 21:33:45 GMT

Has anyone used OpenMQ with the generic gateway that ships with ColdFusion 8? Also, is it true that the generic gateway only supports topics and not queues?

Why does the ActiveMQ example provide both but no the generic one?

I'm guessing being that Jrun is a j2ee 1.3 app server, and Open MQ latest needs ee 1.4 that this is a no go.

Also being that the generic gateway works with 1.0.2 compliant server (jms compliancy guessing) and openMQ is JMS 1.1 standard this is a no go.

Why doesn't anyone respond to any Gateway questions in the adobe forum? ;-)

Time to lose Jrun

SMS Event Gateway problem

forums_noreply@adobe.com — Fri, 09 Sep 2011 05:18:49 GMT

Hello,

I am having a strange problem with my SMS Gateway. The SMPP connection to the external gateway is fine, and outgoing messages are never a problem.

The problem is to do with my incoming.cfc - the gateway instance points to "incoming.cfc" and that file is set up to send an auto reply to the incoming message and add some details to a database. Simple and it works as tested.

Every couple of days though the incoming messages stop getting added to the database, and the auto reply messages don't get generated. The log files indicate that (allthough no changes have been made to either the incoming.cfc file or any other files or configuration settings) we have somehow "switched back" to an earlier version of the incoming.cfc file - I can tell this because the wording of the return message in the logs matches this earlier version.

I have read Adobe documentation that says the gateway will use whatever incoming.cfc it is pointed to and you don't need to refresh the event gateway instance if you change the cfc - even though the old cfc has been deleted off the server entirely and the new one not changed - when the problem occurs (every other day) an instance refresh appears to fix it.

Has anyone seen anything like this?

Thanks for listening!

Simon

Is there a way to restart directory watcher interface from javascript?

forums_noreply@adobe.com — Thu, 05 May 2011 17:04:27 GMT

Running the directory watcher gateway interface under CF8, watching a network directory, the connection to the remote server is occasionally lost, causing the interface to "fail". Is it possible to code javascript or cf to test the status of the interface and restart it? I see the start(), stop(), restart() and status() methods but I'm not sure (need an example) how they might be used.

401.2 - Logon failed due to server configuration.

forums_noreply@adobe.com — Thu, 19 Nov 2009 15:05:36 GMT

I have set up a new server, and there are 3 flex applications on there that can't get session variables and gives this error. I have this working on two other servers, but I don't know where the configuration might be wrong on the server. The app uses getAuthUser() to authenticate with AD, and server is setup as Integrated Windows Authentication.All of the CFM work, only the SWF are getting the error.

EVENT GATEWAYS LAWSUIT - INFO NEEDED

forums_noreply@adobe.com — Fri, 08 May 2009 18:48:24 GMT

GATEWAYS QUESTION: I need the names of companies that are using COld Fusion gateways to handle SMS, and IM simultaneously, better if they're also using a POP gateway at the same time with the same application. Not going to market with this, need it do defend a law suit from someone who claims no one else but them are doing this. Thank you! RLS

Unable to access the Flex Message Broker

forums_noreply@adobe.com — Tue, 21 Apr 2009 12:25:51 GMT

Hi everyone,

Basically, I am trying to do a simple connection of message between a form (with only a text message) to send a message to Flex. The Flex is suppose to display the message. All this use a Event Gateway I created in ColdFusion. I also manipulated XML config files based on the Ben Forta example (http://www.forta.com/blog/index.cfm/2006/2/1/Getting-Started-With-ColdFusion-And-Flex-Ente rprise-Services) but ColdFusion 8 (as it is the version I am using) is not set the same way as CF7 (I am not sure but for me, it is not seems to be the same for config files). I manipulated the messagin-config.xml includes in my path "C:\JRun4\servers\cfusion\cfusion-ear\cfusion-war\WEB-INF\flex" to include the host (127.0.0.1) and a channel for RTMP.

But everything I am doing always returning me the error "Unable to access the Flex Message Broker". First, I am not sure at which step I am in the full process - but I think I can say that I reach the Event Gateway when I am getting this error - is it?

If somebody can explain me a bit better what this message is about exactly, it should help me a lot (and maybe a lot of other user trying to make this work).

I includes a file here that contains the following information:

1) The code I use from the Coldfusion to create the message to pass to;

2) The code I use to read the message in the Flex;

3) The CFC I use to transfer the message through the Event Gateway I created;

3) The messaging-config.xml;

4) The data-management-config.xml.

The Event Gateway I created is called testFlexGateway and it ibased on Data Management and pointing to the CFC I include in my file.

Any help will be great as we have a big project that is dependant of this success!!!

Thank's

get sms from modems

forums_noreply@adobe.com — Mon, 06 Apr 2009 10:11:24 GMT

Hi i have connected a gsm modem to my sever to receive sms replys, just not sure how to get these from the modem to process them?

i would like to use the onincoming event if i can?

java.lang.NoClassDefFoundError: coldfusion/flex/CFEventGatewayAdapter

forums_noreply@adobe.com — Fri, 04 Jul 2008 02:21:53 GMT

When I start EventGateway of DataServicesMessaging, I got an exception like below.
How should I do for fixing this problem???

I installed ColdFusion 801 without LiveCycle Data Services.
I installed LiveCycle Data Services on same machine.
We can't do this?? We have to install LiveCycle Data Services by CF installer???

500

ROOT CAUSE:
java.lang.NoClassDefFoundError: coldfusion/flex/CFEventGatewayAdapter
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.getConstructor(Class.java:1657)
at coldfusion.eventgateway.EventServiceImpl.allocateEventGateway(EventServiceImpl.java:1031)
at coldfusion.eventgateway.EventServiceImpl.startEventGateway(EventServiceImpl.java:398)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at coldfusion.runtime.StructBean.invoke(StructBean.java:511)
at coldfusion.runtime.CfJspPage._invoke(CfJspPage.java:2300)
at cfgateways2ecfm251583696._factor5(E:\cf8_updates\cfusion\wwwroot\CFIDE\administrator\even tgateway\gateways.cfm:261)
at cfgateways2ecfm251583696._factor20(E:\cf8_updates\cfusion\wwwroot\CFIDE\administrator\eve ntgateway\gateways.cfm:251)
at cfgateways2ecfm251583696.runPage(E:\cf8_updates\cfusion\wwwroot\CFIDE\administrator\event gateway\gateways.cfm:1)
at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:196)
at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:370)
at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)
at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:279)
at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:48)
at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)
at coldfusion.filter.PathFilter.invoke(PathFilter.java:86)
at coldfusion.filter.LicenseFilter.invoke(LicenseFilter.java:27)
at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70)
at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:2 8)
at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46)
at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
at coldfusion.CfmServlet.service(CfmServlet.java:175)
at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)
at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )
at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)
at jrun.servlet.FilterChain.service(FilterChain.java:101)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
Caused by: java.lang.ClassNotFoundException: coldfusion.flex.CFEventGatewayAdapter
at coldfusion.bootstrap.BootstrapClassLoader.loadClass(BootstrapClassLoader.java:235)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 45 more

javax.servlet.ServletException: ROOT CAUSE:
java.lang.NoClassDefFoundError: coldfusion/flex/CFEventGatewayAdapter
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.getConstructor(Class.java:1657)
at coldfusion.eventgateway.EventServiceImpl.allocateEventGateway(EventServiceImpl.java:1031)
at coldfusion.eventgateway.EventServiceImpl.startEventGateway(EventServiceImpl.java:398)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at coldfusion.runtime.StructBean.invoke(StructBean.java:511)
at coldfusion.runtime.CfJspPage._invoke(CfJspPage.java:2300)
at cfgateways2ecfm251583696._factor5(E:\cf8_updates\cfusion\wwwroot\CFIDE\administrator\even tgateway\gateways.cfm:261)
at cfgateways2ecfm251583696._factor20(E:\cf8_updates\cfusion\wwwroot\CFIDE\administrator\eve ntgateway\gateways.cfm:251)
at cfgateways2ecfm251583696.runPage(E:\cf8_updates\cfusion\wwwroot\CFIDE\administrator\event gateway\gateways.cfm:1)
at coldfusion.runtime.CfJspPage.invoke(CfJspPage.java:196)
at coldfusion.tagext.lang.IncludeTag.doStartTag(IncludeTag.java:370)
at coldfusion.filter.CfincludeFilter.invoke(CfincludeFilter.java:65)
at coldfusion.filter.ApplicationFilter.invoke(ApplicationFilter.java:279)
at coldfusion.filter.RequestMonitorFilter.invoke(RequestMonitorFilter.java:48)
at coldfusion.filter.MonitoringFilter.invoke(MonitoringFilter.java:40)
at coldfusion.filter.PathFilter.invoke(PathFilter.java:86)
at coldfusion.filter.LicenseFilter.invoke(LicenseFilter.java:27)
at coldfusion.filter.ExceptionFilter.invoke(ExceptionFilter.java:70)
at coldfusion.filter.ClientScopePersistenceFilter.invoke(ClientScopePersistenceFilter.java:2 8)
at coldfusion.filter.BrowserFilter.invoke(BrowserFilter.java:38)
at coldfusion.filter.NoCacheFilter.invoke(NoCacheFilter.java:46)
at coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:38)
at coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22)
at coldfusion.CfmServlet.service(CfmServlet.java:175)
at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)
at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42 )
at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)
at jrun.servlet.FilterChain.service(FilterChain.java:101)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
Caused by: java.lang.ClassNotFoundException: coldfusion.flex.CFEventGatewayAdapter
at coldfusion.bootstrap.BootstrapClassLoader.loadClass(BootstrapClassLoader.java:235)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 45 more

at coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:70 )
at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)
at jrun.servlet.FilterChain.service(FilterChain.java:101)
at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

Error invoking CFC for gateway

forums_noreply@adobe.com — Tue, 24 Feb 2009 12:12:25 GMT

Am getting the following error while invoking the event gateway

"Error invoking CFC for gateway myGateway: Event Handler Exception. An exception occurred when invoking a event handler method from Application.cfc The method name is: onRequestStart."

Please advice