Setup oslo.messaging extra packages for optional drivers

Change-Id: I6166fc192de6450b6e524077c94273ecece2d30d

defaults/main.yml

@@ -128,6 +128,10 @@ barbican_oslomsg_notify_userid: "{{ barbican_oslomsg_rpc_userid }}"
 barbican_oslomsg_notify_password: "{{ barbican_oslomsg_rpc_password }}"
 barbican_oslomsg_notify_vhost: "{{ barbican_oslomsg_rpc_vhost }}"
 
+## (Qdrouterd) integration
+# TODO(ansmith): Change structure when more backends will be supported
+barbican_oslomsg_amqp1_enabled: "{{ barbican_oslomsg_rpc_transport == 'amqp' }}"
+
 # Keystone AuthToken/Middleware
 barbican_keystone_auth_plugin: password
 barbican_service_project_domain_id: default
@@ -166,6 +170,9 @@ barbican_pip_packages:
   - python-memcached
   - uwsgi
 
+barbican_optional_oslomsg_amqp1_pip_packages:
+  - oslo.messaging[amqp1]
+
 # This variable is used by the repo_build process to determine
 # which host group to check for members of before building the
 # pip packages required by this role. The value is picked up

tasks/barbican_install_source.yml

@@ -103,6 +103,19 @@
   tags:
     - skip_ansible_lint
 
+- name: Install optional pip packages
+  pip:
+    name: "{{ barbican_optional_oslomsg_amqp1_pip_packages }}"
+    state: "{{ barbican_pip_package_state }}"
+    virtualenv: "{{ barbican_bin | dirname }}"
+    virtualenv_site_packages: "no"
+  when: barbican_oslomsg_amqp1_enabled
+  register: install_optional_packages
+  until: install_optional_packages is success
+  retries: 5
+  delay: 2
+  notify: Restart barbican services
+
 - name: Record the venv tag deployed
   ini_file:
     dest: "/etc/ansible/facts.d/openstack_ansible.fact"