Event Gateways in Multiserver Environment

Hi all
As a company we are looking to deploy a Flex application
using 'push' messaging.
The backend is a multiserver Coldfusion 8 setup behind a load
balancer. My concern is around the multiserver setup while using
event gateways. If a client consumes from a particular gateway on a
particular server, and a CF process on
another server produces for a gateway on it's server how
will the data push occur thus updating all clients consuming from
the gateways on
all servers.
I'm afraid we will have to get the CF process on one server
produce for it's own gateway and we'll have to get all clients to
consume from that gateway - thus not allowing us to spead the load
across all CF servers using thier own gateways in the multi-server
environment.
Am I missing something here? This area appears to be fairly
new, so any and all comments appreciated.
Cheers,
Ciaran

Hey guys, just wanted to register that I am having the same
exact problem! Let me know about any solution!
bhyder
Richard
Gere Fansite

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Hello all,
I've recently been developing a project that involves sending out events from ColdFusion to LiveCycle 2.6.1 using the Data Management event gateway to Flex 4.0 clients (LiveCycle and ColdFusion are on different Instances, but the same server). To begin with, I used ColdFusion assemblers, DAO's, and models and everything worked fine locally. After deploying this setup to a beta site, I decided that this setup would be very troublesome in terms of configuring clustered instances across multiple servers. I then decided to convert my assemblers, DAO's, and models to Java. The conversion went well and the flex clients see the exact same data as they did with the ColdFusion adapter.
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Dustin,
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2. You will be able to use the CF Data Management Gateway to pass messages to Java-based destinations. The APIs the gateway uses should work fine with either CF or Java based Data Management destinations.
The CF/LCDS integration doesn't support what you are trying to do when you run two seperate instances.

Asynch Event Gateway not multi-threaded?

Hi there,
I've stumbled upon a huge problem and I would greatly
appreciate your help otherwise I am looking at a major rework of my
application :S
I thought that any event gateway (asynch) would be
multi-threaded? that is, multiple users can call the event gateway
at the same time and this would just fire up threads of the event
gateway and parallel processing of the cfc will occur?
However, that is not whats happening in my application. My
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complicated and time consuming data) its data and creates a file
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at the same time, it only takes the first job, finishes it and then
starts working on the next job in the queue. So if there were 5
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gateway will take their jobs one by one which is very bad for me.
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using Coldfusion MX 7, WINXP

My event gateway is called from a webpage and it computes (very
complicated and time consuming data) its data and creates a file
with a unique filename. However, if more then 1 user submits a job
at the same time, it only takes the first job, finishes it and then
starts working on the next job in the queue. So if there were 5
users who submitted their jobs one after the other, the event
gateway will take their jobs one by one
I'm not so sure about your conclusion in the case of 5 jobs.
The 5 jobs may start in the order in which they were triggered, but
might end in a different order. Also, there could be some
multithreaded processing between the first job starting and the
last job finishing. Threads can be unpredictable worms.

Coldfusion Event Gateway Adapter exercise

I am doing this exercises in the FlexBuilder SDK .
Use Coldfusion Event Gateway Adapter exercise
When I get to
Select Event Gateways > Gateway Instances.
Enter Flex2CF2 as the Gateway ID.
Select Flex Messaging - Flex as the Gateway Type.
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The closest two are
DataManagement Notifies Data Management Services of data
changes coldfusion.eventgateway.flex.FlexDataManagementGateway
DataServicesMessaging Handles Data Services Messaging
messages coldfusion.eventgateway.flex.FlexMessagingGateway
I try the example @
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the cmd console
flex.messaging.MessageException: Unable to find ColdFusion
gateway 'Flex2CF2 in RMI registry on host localhost
the gateway may not be running.
The gateway shows as running in the coldfusion
adminstrator.

You need to ask them on Adobe forum: https://forums.adobe.com/community/coldfusion
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
My Website Link
My Linkedin Profile
My MVP Profile

ColdFusion Event Gateway Flex CF 8

I am doing this exercises in the FlexBuilder SDK .
Use Coldfusion Event Gateway Adapter exercise
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Select Event Gateways > Gateway Instances.
Enter Flex2CF2 as the Gateway ID.
Select Flex Messaging - Flex as the Gateway Type.
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The closest two are
DataManagement Notifies Data Management Services of data
changes coldfusion.eventgateway.flex.FlexDataManagementGateway
DataServicesMessaging Handles Data Services Messaging
messages coldfusion.eventgateway.flex.FlexMessagingGateway
I try the example @
http://localhost:8700/samples/dataservice/myapp/flexemail2cf.mxml
The flex server is running fine but generates an RMI error in
the cmd console
flex.messaging.MessageException: Unable to find ColdFusion
gateway 'Flex2CF2 in RMI registry on host localhost
the gateway may not be running.
The gateway shows as running in the coldfusion adminstrator.
Please help

I think Flex messaging event gateway capability first was
available in CF 7.

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RLS
What I posted there was:
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ID: 0x3010
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Length: Variable
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we are on BPC 7 MS, SP5, Multiserver environment(Two appservers and one database server)we have been using the prod system for 6 months without any issues, recently we extended the logic to execute for more periods,then started facing the issue of one of the appserver goes down automatically (most of the times appserver02) while users send data using input shchedules and sometimes we see the locks in lckapp table, during this time users can't loginto the system untill restart the com+ services ,send governor service and teboot of servers.
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SetLocale() is ignored when a CFC is called through an event
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set as default locale that the server JVM instance was installed
with.
Does anybody have a workaround for this?
We use MX7.
Here is some example code if you want to test:
<cfset message = StructNew()>
<cfset message.method = "onTest">
<cfset pushQueue =
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<cfcomponent>
<cffunction name="onTest" output="no">
<cfargument name="CFEvent" type="struct"
required="yes">

<cfset SetLocale("en_GB")>
<cffile action="append" file="c:\temp.log"
output="#GetLocale()#">
</cffunction>
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Leo_CF wrote:
> SetLocale() is ignored when a CFC is called through an
event gateway.
> SetLocale() works fine when called through an ordinary
HTTP request. When
> called through the gateway the locale is always set as
default locale that the
> server JVM instance was installed with.
ok, i can confirm for asynch gateways.
> Does anybody have a workaround for this?
not sure i'd class this as a "workaround" as it's pretty
drastic & i have not
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<cfscript>
locale=createObject("java","java.util.Locale");
thisLocale=locale.init("th","TH");
originalLocale=locale.getDefault();
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<cflog text="#getLocale()# :::
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<cfscript>
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Gateway TYpe: DirectoryWatcher-Watches a dire for file
changes
CFC Path: C:\Inetpub\wwwroot\myproject\gal\
Configuration File: C:\Inetpub\wwwroot\myproject\gal\gal.cfg
Startup Mode: Automatic
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c:\inetpub\wwwroot\myproject\gal
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BKBK,
Thank you for your response. That does adequately cover the
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It did serve to definitively answer my most pressing
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I will play around with the Application scope to see if there
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RLS

Event Gateways in Multiserver Environment

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