bdf984a7ce
This adds message queue connection information to the RequestContext
which can be used by nova-api to communicate with a targeted cell
message queue with each query.
A function 'get_cell_client' can be called in rpc functions to enable them
to use message queue transport information from a RequestContext. The
function creates a rpc client object dynamically if message queue
connection information is found in the RequestContext and falls back on
the default rpc client.
Example usage:
def get_cell_client(self, context):
return rpc.get_cell_client(context, self.client)
def build_and_run_instances(self, ctxt, instance, host, image, ...)
cctxt = self.get_cell_client(ctxt).prepare(...)
cctxt.cast(...)
Implements blueprint cells-mq-connection-switching
Change-Id: Idef670d5b73c9cef8501a0593eccd785b708bd2b
OpenStack Nova README
OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of virtualization technologies, including KVM, Xen, LXC, VMware, and more. In addition to its native API, it includes compatibility with the commonly encountered Amazon EC2 and S3 APIs.
OpenStack Nova is distributed under the terms of the Apache License, Version 2.0. The full terms and conditions of this license are detailed in the LICENSE file.
Nova primarily consists of a set of Python daemons, though it requires and integrates with a number of native system components for databases, messaging and virtualization capabilities.
To keep updated with new developments in the OpenStack project follow @openstack on Twitter.
To learn how to deploy OpenStack Nova, consult the documentation available online at:
For information about the different compute (hypervisor) drivers supported by Nova, read this page on the wiki:
In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:
Developers wishing to work on the OpenStack Nova project should always base their work on the latest Nova code, available from the master GIT repository at:
Developers should also join the discussion on the mailing list, at:
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests. Further developer focused documentation is available at:
For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst file.
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