On 02/09/2015 04:04 PM, Doug Hellmann wrote: > > > On Mon, Feb 9, 2015, at 02:40 PM, Gravel, Julie Chongcharoen wrote: >> Hello, >> I want to use oslo.messaging.RPCClient.call() to invoke a >> method on multiple servers, but not all of them. Can this >> be done and how? I read the code documentation (client.py >> and target.py). I only saw either the call used for one >> server at a time, or for all of them using the fanout >> param. Neither options is exactly what I want. >> Any response/explanation would be highly appreciated. > > This isn't a pattern that has come up before. Before we talk about > adding it, I'd like to understand more about your use case. How do you > know which servers should receive the call, for example? And are you > actually calling and expecting a response, or do you just need to send a > message to those servers?
If no response is needed, you might be able to use whatever is done for notifications. Notifications are sent out to a topic, and N servers may be subscribed to receive those notifications. IIRC, that isn't done through the RPC classes, but would result in the pattern desired here. -- Russell Bryant __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
