add functional testing for pollster service

[gordon chung]

placeholder to add testing for polling agents.... right now we have no idea if anything is broken unless we look at logs.

[Qichen Hao (adsl123gg2008)]

I have an idea of using CL to get the information of polling agent,If we write a polling agent,we can use the cmd line to get the information,for example,ceilometer --polling_agent cpu interval 60(cpu is the name of agent which is defined in the setup.cfg).

[gordon chung (chungg)]

what is a 'CL'?

[Qichen Hao (adsl123gg2008)]

i mean comman line,we can use cliff to generate the command line and use the CL to test the polling agent.

[Qichen Hao (adsl123gg2008)]

I think we can add a command in ceilometer python client--poll,just like 'ceilometer poll --namesapce=ceilometer.poll.compute --module=cpu',the command will print the message generated by polling agent.

[gordon chung (chungg)]

to be honest, this would be quite complicated as these are two different services. it would go from client -> API -> polling agent and back... and there is currently no way to for API to communicate with polling agents. integration full stack testing might be the easiest and most realistic test

[Qichen Hao (adsl123gg2008)]

yes,it's quite complicated,but if we launch a new ceilometer compute|central service in ceilometer python client,and just loading the plugin using DriverManager in stevedore.I know this will increasing the load,but it's rare situations in developing,so we can destroy the service if the developers don't use the poll command,and we will reduce the burden as much as we can.

[Qichen Hao (adsl123gg2008)]

More easier,we can just load the pollster plugin that developers write and the discovery plugin.

[Qichen Hao (adsl123gg2008)]

hi,gordon,Why can't we implement the function in ceilometer API,in the api code ,we can just load the pollster plugin that developers write and the discovery plugin.I think it's easier than full stack testing.

[gordon chung (chungg)]

i'm not sure what you mean by API service here. do you mean the REST API service?

[Qichen Hao (adsl123gg2008)]

yes,REST API,when you request the ceilometer api service,the specific function will load the pollster plugin that developers write to get the samples produced by the pollster plugin.

[gordon chung (chungg)]

but the REST api does not communicate with polling agent?

[Qichen Hao (adsl123gg2008)]

now the polling agents are managed by agentManager,and the aim of this bug is adding the function test for specifically polling agent(one or more),so we can add a function which loads the polling agent,and the function returns the result of the polling agent.Access the functon and get the result is achieved by ceilometer REST api.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/294898

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/294900

[gordon chung (chungg)]

not merged.

your solution does not actually test the polling agent. it just tests that the pollsters it loads does something.

[Qichen Hao (adsl123gg2008)]

so you want to konw what happened in the process of starting the polling agent service? including whether all of the pollsters are started correctly.

[OpenStack Infra (hudson-openstack)]

Change abandoned by gordon chung (<email address hidden>) on branch: master
Review: https://review.openstack.org/294900
Reason: REST api is deprecated

[OpenStack Infra (hudson-openstack)]

Change abandoned by gordon chung (<email address hidden>) on branch: master
Review: https://review.openstack.org/294898
Reason: api is deprecated