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Error: SusbcriberNotFound - "...no eligible subscribers to receive the message... "

NeuronESB v3.5.4.1100

I have a Publisher that publishes (send) to a topic. I have a Subscriber that subscribes (receive) from that same topic.  The subscriber has nothing except the topics (receive) and the business process (on receive).  The Business Process is thoroughly tested and solid.

Attached to the Subscriber is a Business Process that

  1. gets the message
  2. makes a C# http client RESTful call
  3. receives an XML response
  4. sends the xml to a stored procedure for inserting data into a database

It works fine when:

  1. I use the TEST Clients to test the entire Pub/Sub it works fine.
  2. I use the adapter to receive the message and publish it and use a single TEST client to receive the message

It FAILS when

  • I do not use any test clients. 
  • This is a business process that consumes the message and nothing else. 
  • The Subscriber with a Business Process is supposed to complete the entire process.

How do I get this to work without using the Test Client?

The Goal is to receive a message and run a Process inside of Neuron.

I have tried variations of a final step in the business process to be a

  • CANCEL -- failed
  • TRACE -- failed
  • <nothing> -- failed

It only fails when there is not a TEST Client connected to the Subscriber.

Here is the error message:

Failure Details

Type: SuscriberNotFound

Message: The client MyPublisher (a3a1de01-fc68-4b68-bb94-a3ddb7ab0f44) published Message a820f5d7-805e-4963-beee-06f3389b728a to topic 'MyTopic' but there were no eligible subscribers to receive the message.

Tags: Failure

Views: 448

Replies are closed for this discussion.

Replies to This Discussion

Jeffery,

 A subscriber cannot receive a message (and therefore cannot execute a process), until an instance of that subscriber has been created.  There are four ways to create an instance of a subscriber:

1. Adapter Endpoint

2. Service Endpoint (service connector)

3. Workflow Endpoint

4. Connect with the Client API in your own .NET application

The Test Client is an implementation of the Client API, which is why your process is executed when you have a test client connected as your subscriber.

Your choices are:

1. Configure your publisher to execute the process instead of the subscriber

2. Use on of the methods above to have an instance of a subscriber

3. Use a workflow instead of a process for this logic

That solved the issue.

Thank you for such a prompt and effective reply!

Jeffery

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