Assess ceph request status until it is complete.

Due to a change in the ceph-client interface *1 the
storage-ceph.pools.available flag can be lost when the charm is
upgraded from an old version to the current version. To account for
this check the request status whenever there is an outstanding
ceph request.

*1 https://github.com/openstack/charm-interface-ceph-client/blame/master/requires.py#L107

Change-Id: I179df45af2fb2d4723cd579a1070ece0d18b5002
Closes-Bug: #1850618

src/reactive/gnocchi_handlers.py

@@ -88,6 +88,12 @@ def configure_ceph(ceph):
         charm_instance.configure_ceph_keyring(ceph.key())
 
 
+@reactive.when_not('storage-ceph.pools.available')
+@reactive.when('storage-ceph.connected')
+def check_ceph_request_status(ceph):
+    ceph.changed()
+
+
 @reactive.when_not('storage-ceph.connected')
 def storage_ceph_disconnected():
     with charm.provide_charm_instance() as charm_instance:

unit_tests/test_gnocchi_handlers.py

@@ -59,6 +59,9 @@ class TestRegisteredHooks(test_utils.TestRegisteredHooks):
                 'storage_ceph_connected': (
                     'storage-ceph.connected',
                 ),
+                'check_ceph_request_status': (
+                    'storage-ceph.connected',
+                ),
             },
             'when_not': {
                 'storage_ceph_disconnected': (
@@ -76,6 +79,9 @@ class TestRegisteredHooks(test_utils.TestRegisteredHooks):
                 'storage_ceph_connected': (
                     'ceph.create_pool.req.sent',
                 ),
+                'check_ceph_request_status': (
+                    'storage-ceph.pools.available',
+                ),
             },
         }
         # test that the hooks were registered via the