On 07/17/2018 03:36 AM, Neil Jerram wrote:
Can someone help me with how to look up a project name (aka tenant name)
for a known project/tenant ID, from code (specifically a mechanism
driver) running in the Neutron server?
I believe that means I need to make a GET REST call as here:
https://developer.openstack.org/api-ref/identity/v3/index.html#projects. But
I don't yet understand how a piece of Neutron server code can ensure
that it has the right credentials to do that. If someone happens to
have actual code for doing this, I'm sure that would be very helpful.
(I'm aware that whenever the Neutron server processes an API request,
the project name for the project that generated that request is added
into the request context. That is great when my code is running in an
API request context. But there are other times when the code isn't in a
request context and still needs to map from a project ID to project
name; hence the question here.)
Hi Neil,
You basically answered your own question above :) The neutron request
context gets built from oslo.context's Context.from_environ() [1] which
has this note in the implementation [2]:
# Load a new context object from the environment variables set by
# auth_token middleware. See:
#
https://docs.openstack.org/keystonemiddleware/latest/api/keystonemiddleware.auth_token.html#what-auth-token-adds-to-the-request-for-use-by-the-openstack-service
So, basically, simply look at the HTTP headers for HTTP_X_PROJECT_NAME.
If you don't have access to a HTTP headers, then you'll need to pass
some context object/struct to the code you're referring to. Might as
well pass the neutron RequestContext (derived from oslo_context.Context)
to the code you're referring to and you get all this for free.
Best,
-jay
[1]
https://github.com/openstack/oslo.context/blob/4abd5377e4d847102a4e87a528d689e31cc1713c/oslo_context/context.py#L424
[2]
https://github.com/openstack/oslo.context/blob/4abd5377e4d847102a4e87a528d689e31cc1713c/oslo_context/context.py#L433-L435
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