Add workload status reporting

The charm currently does not report any workload status. This change
adds support for this.

Change-Id: I2586307c7beec5dc518a7b51c0737cca6105059d
Closes-Bug: 1604580

hooks/cinder_backup_hooks.py

@@ -22,7 +22,9 @@ from cinder_backup_utils import (
     register_configs,
     restart_map,
     set_ceph_env_variables,
-    PACKAGES
+    PACKAGES,
+    REQUIRED_INTERFACES,
+    VERSION_PACKAGE,
 )
 from cinder_backup_contexts import (
     CephBackupSubordinateContext
@@ -41,6 +43,10 @@ from charmhelpers.core.host import (
     restart_on_change,
     service_restart,
 )
+from charmhelpers.contrib.openstack.utils import (
+    set_os_workload_status,
+    os_application_version_set,
+)
 from charmhelpers.contrib.storage.linux.ceph import (
     delete_keyring,
     ensure_ceph_keyring,
@@ -160,3 +166,5 @@ if __name__ == '__main__':
         hooks.execute(sys.argv)
     except UnregisteredHookError as e:
         log('Unknown hook {} - skipping.'.format(e))
+    set_os_workload_status(CONFIGS, REQUIRED_INTERFACES)
+    os_application_version_set(VERSION_PACKAGE)

hooks/cinder_backup_utils.py

@@ -34,6 +34,10 @@ PACKAGES = [
     'ceph-common',
     'cinder-backup',
 ]
+REQUIRED_INTERFACES = {
+    'ceph': ['ceph'],
+}
+VERSION_PACKAGE = 'cinder-common'
 CHARM_CEPH_CONF = '/var/lib/charm/{}/ceph.conf'
 CEPH_CONF = '/etc/ceph/ceph.conf'
 TEMPLATES = 'templates/'