the rough format of api/pollsters notificatoins is as follows:
NOTIFICATION = {
u'_context_domain': None,
u'_context_request_id': u'req-da91b4bf-d2b5-43ae-8b66-c7752e72726d',
'event_type': u'sample.create',
'timestamp': u'2015-06-1909: 19: 35.786893',
u'_context_auth_token': None,
u'_context_read_only': False,
'payload': [{
u'counter_name': u'instance100',
u'user_id': u'e1d870e51c7340cb9d555b15cbfcaec2',
u'resource_id': u'instance',
u'timestamp': u'2015-06-19T09: 19: 35.785330',
u'message_signature': u'fake_signature1',
u'resource_metadata': {u'foo': u'bar'},
u'source': u'30be1fc9a03c4e94ab05c403a8a377f2: openstack',
u'counter_unit': u'instance',
u'counter_volume': 1.0,
u'project_id': u'30be1fc9a03c4e94ab05c403a8a377f2',
u'message_id': u'4d865c6e-1664-11e5-9d41-0819a6cff905',
u'counter_type': u'gauge'
},
{
u'counter_name': u'instance100',
u'user_id': u'e1d870e51c7340cb9d555b15cbfcaec2',
u'resource_id': u'instance',
u'timestamp': u'2015-06-19T09: 19: 35.785330',
u'message_signature': u'fake_signature12',
u'resource_metadata': {u'foo': u'bar'},
u'source': u'30be1fc9a03c4e94ab05c403a8a377f2: openstack',
u'counter_unit': u'instance',
u'counter_volume': 1.0,
u'project_id': u'30be1fc9a03c4e94ab05c403a8a377f2',
u'message_id': u'4d866da8-1664-11e5-9d41-0819a6cff905',
u'counter_type': u'gauge'
}],
u'_context_resource_uuid': None,
u'_context_user_identity': u'fake_user_identity---',
u'_context_show_deleted': False,
u'_context_tenant': u'30be1fc9a03c4e94ab05c403a8a377f2',
'priority': 'info',
u'_context_is_admin': True,
u'_context_project_domain': None,
u'_context_user': u'e1d870e51c7340cb9d555b15cbfcaec2',
u'_context_user_domain': None,
'publisher_id': u'ceilometer.api',
'message_id': u'939823de-c242-45a2-a399-083f4d6a8c3e'
}
since payload is a list, it does not make it very extensible. for us to send anything else, we need to create an entire different event.
another reason is that by default, metadata is the taken as full payload... and it's expected to be dict. we can change that behaviour but i think it should probably change here too.