Merge "Define condition for the first play host one time"

tasks/main.yml

@@ -28,7 +28,7 @@
 
 - import_tasks: db_setup.yml
   when:
-    - "inventory_hostname == ((groups['blazar_all'] | intersect(ansible_play_hosts)) | list)[0]"
+    - _blazar_is_first_play_host
   vars:
     _oslodb_setup_host: "{{ blazar_db_setup_host }}"
     _oslodb_ansible_python_interpreter: "{{ blazar_db_setup_python_interpreter }}"
@@ -45,7 +45,7 @@
 
 - import_tasks: mq_setup.yml
   when:
-    - "inventory_hostname == ((groups['blazar_all'] | intersect(ansible_play_hosts)) | list)[0]"
+    - _blazar_is_first_play_host
   vars:
     _oslomsg_rpc_setup_host: "{{ blazar_oslomsg_rpc_setup_host }}"
     _oslomsg_rpc_userid: "{{ blazar_oslomsg_rpc_userid }}"
@@ -88,7 +88,7 @@
 
 - import_tasks: blazar_db_setup.yml
   when:
-    - "inventory_hostname == ((groups['blazar_all'] | intersect(ansible_play_hosts)) | list)[0]"
+    - _blazar_is_first_play_host
   tags:
     - blazar-config
 
@@ -137,6 +137,6 @@
         type: "{{ blazar_service_type }}"
         description: "{{ blazar_service_description }}"
   when:
-    - "inventory_hostname == ((groups['blazar_all'] | intersect(ansible_play_hosts)) | list)[0]"
+    - _blazar_is_first_play_host
   tags:
     - blazar-config

vars/main.yml

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+_blazar_is_first_play_host: "{{ (blazar_services['blazar-api']['group'] in group_names and inventory_hostname == ((groups[blazar_services['blazar-api']['group']] | intersect(ansible_play_hosts)) | list)[0]) | bool }}"
+
 #
 # Compile a list of the services on a host based on whether
 # the host is in the host group and the service is enabled.