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Subject: More complicated scenario for camel-bam
Date: Wed, 11 Jan 2012 00:36:49 +0100
Message-Id: <B4911384-8ADA-4E35-A8EB-0569E0D500F0@code-house.org>
To: users@camel.apache.org
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Hey everyone,
I tried yo use camel-bam and it works for very basic example shown in =
documentation. It works well for correlating the files without any =
middle processing steps.

The process I try to monitor looks following

- receive incoming JMS message - split - multicast (queue1, queue2)

So I've build a following configuration for the process:
ValueBuilder correlation =3D header("JMSCorrelationID");
ActivityBuilder incoming =3D =
activity("activemq:incoming").correlate(correlation).name("incoming");

ActivityBuilder sys1 =3D =
activity("amq2:queue1").correlate(correlation).name("system1");
ActivityBuilder sys2 =3D =
activity("amq2:queue2").correlate(correlation).name("system2");

sys1.starts().after(incoming.starts());
sys2.starts().after(incoming.starts());

But after receiving messages and initializing a process instance nothing =
happens. Er it happens, the activity is created. I can not reuse a =
incoming.getEndpoint to create an from statement and process message. =
Multiple consumers on same destination are not allowed.

Issues I've discovered:
- Lack of support for parallel activities.
- No support for processing received message. Usually a incoming message =
is only a entry point for a process.
- No support for a custom process names. Not everyone are happy with =
Proces-N name. A ProcessBuilder extensions can't change a naming schema.
- Activity definition is not put into the database as long as it is not =
called by flow. Process is created and the activities are known, but =
they're not persisted before processing. So whole definitions are =
useless if we would like display process definitions somewhere else.
- Hard coded dependency to JPA, can't be replaced by alternative way of =
storing process definitions eg like in IdempotentRepository.

These issues makes a camel-bam useless in my case. Should I use an =
alternative tool like activiti-camel integration? It's fine but I don't =
need whole BPMN, diagraming. I want to track a flow between systems in =
an easy way, there is no human tasks, only service calls and camel =
logic.

=A3ukasz Dywicki
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