<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">The service reference is created in the start method of the service. This happens around line 217 in nova/service.py in the current code. You should be able to do something similar by sending a message to service_create on conductor. It will return an error if the service already exists. Note you can also use service_get_by_args in conductor to see if the service exists.<div><br></div><div>Vish</div><div><br><div><div><div>On Apr 15, 2014, at 9:22 PM, Swapnil S Kulkarni <<a href="mailto:coolsvap@gmail.com">coolsvap@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Interesting discussion. Forwarding to openstack-dev.<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Apr 16, 2014 at 9:34 AM, Prashant Upadhyaya <span dir="ltr"><<a href="mailto:prashant.upadhyaya@aricent.com" target="_blank">prashant.upadhyaya@aricent.com</a>></span> wrote:<br>
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<div><p class="MsoNormal">Hi,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I am writing a Compute Node Simulator.<u></u><u></u></p><p class="MsoNormal">The idea is that I would write a piece of software using C which honors the RabbitMQ interface towards the Controller, but will not actually do the real thing – everything on the Compute Node will be simulated by my simulator software.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">The problem I am facing, that I have not been able to get my simulated CN listed in the output of
<u></u><u></u></p><p class="MsoNormal">nova-manage service list<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I am on Havana, and my simulator is sending a periodic ‘service_update’ and ‘compute_node_update’ RPC messages to the ‘nova’ exchange and the ‘conductor’ routing key.<u></u><u></u></p><p class="MsoNormal">I can manipulate the above messages at will to fool the controller.<u></u><u></u></p><p class="MsoNormal">(I observe the messages from a real CN and take cues from there to construct a fake one from my simulator)<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Question is – what causes the controller to add a new Nova Compute in its database, is it the ‘service_update’ RPC or something else.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Hopefully you can help me reverse engineer the interface.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Regards<u></u><u></u></p><p class="MsoNormal">-Prashant<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p>
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