Handler should only restart relevent swift services

* Adjust the handler to include a "restart" handler for each of account,
container, object and proxy service groups.
* Add a variable in defaults listing program names for each swift
service group.
* Remove the over-arching "all swift program_names" variable.
* Change the storage and proxy host tasks to call the appropriate
* handler.

Change-Id: I25adfa152fc7a3da83ca7c12d57977eec8b51d7b
Closes-Bug: #1427601

defaults/main.yml

@@ -127,21 +127,24 @@ swift_apt_packages:
   - python-dev
   - rsync
 
-swift_program_names:
-  - swift-proxy-server
-  - swift-object-server
-  - swift-object-auditor
-  - swift-object-replicator
-  - swift-object-updater
-  - swift-object-server-replicator
+swift_account_program_names:
+  - swift-account-server
+  - swift-account-auditor
+  - swift-account-replicator
+  - swift-account-reaper
+
+swift_container_program_names:
   - swift-container-server
   - swift-container-auditor
   - swift-container-replicator
   - swift-container-sync
   - swift-container-updater
-  - swift-container-server-replicator
-  - swift-account-server
-  - swift-account-auditor
-  - swift-account-replicator
-  - swift-account-reaper
-  - swift-account-server-replicator
+
+swift_object_program_names:
+  - swift-object-server
+  - swift-object-auditor
+  - swift-object-replicator
+  - swift-object-updater
+
+swift_proxy_program_names:
+  - swift-proxy-server

handlers/main.yml

@@ -13,13 +13,40 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-- name: Restart swift services
+- name: Restart swift account services
   service:
     name: "{{ item }}"
     state: "restarted"
     pattern: "{{ item }}"
   register: service_restart
-  with_items: swift_program_names
+  with_items: swift_account_program_names
+  failed_when: false
+
+- name: Restart swift container services
+  service:
+    name: "{{ item }}"
+    state: "restarted"
+    pattern: "{{ item }}"
+  register: service_restart
+  with_items: swift_container_program_names
+  failed_when: false
+
+- name: Restart swift object services
+  service:
+    name: "{{ item }}"
+    state: "restarted"
+    pattern: "{{ item }}"
+  register: service_restart
+  with_items: swift_object_program_names
+  failed_when: false
+
+- name: Restart swift proxy services
+  service:
+    name: "{{ item }}"
+    state: "restarted"
+    pattern: "{{ item }}"
+  register: service_restart
+  with_items: swift_proxy_program_names
   failed_when: false
 
 - name: Restart service

tasks/swift_post_install.yml

@@ -23,7 +23,11 @@
     - { src: "swift.conf.j2", dest: "/etc/swift/swift.conf" }
     - { src: "swift-rsyslog.conf.j2", dest: "/etc/rsyslog.d/49-swift.conf" }
     - { src: "swift-dispersion.conf.j2", dest: "/etc/swift/dispersion.conf" }
-  notify: Restart swift services
+  notify:
+    - Restart swift account services
+    - Restart swift container services
+    - Restart swift object services
+    - Restart swift proxy services
   tags:
     - swift-config
     - swift-post-install

tasks/swift_proxy_hosts.yml

@@ -28,4 +28,4 @@
     dest: "/etc/swift/proxy-server/proxy-server.conf"
     owner: "{{ swift_system_user_name }}"
     mode: "0644"
-  notify: Restart swift services
+  notify: Restart swift proxy services

tasks/swift_storage_hosts_account.yml

@@ -75,7 +75,7 @@
     mode: "0644"
   with_items:
     - { src: "account-server.conf.j2", dest: "/etc/swift/account-server/account-server.conf" }
-  notify: Restart swift services
+  notify: Restart swift account services
 
 # We only create the dedicated replicator configuration when using a dedicated replication_network
 - name: "Swift account server replicator configuration"
@@ -90,4 +90,4 @@
   when: >
     swift.replication_network is defined and
     swift.replication_network != swift.storage_network
-  notify: Restart swift services
+  notify: Restart swift account services

tasks/swift_storage_hosts_container.yml

@@ -84,7 +84,7 @@
     mode: "0644"
   with_items:
     - { src: "container-server.conf.j2", dest: "/etc/swift/container-server/container-server.conf" }
-  notify: Restart swift services
+  notify: Restart swift container services
 
 # We only create the dedicated replicator configuration when using a dedicated replication_network
 - name: "Swift container server configuration"
@@ -99,4 +99,4 @@
   when: >
     swift.replication_network is defined and
     swift.replication_network != swift.storage_network
-  notify: Restart swift services
+  notify: Restart swift container services

tasks/swift_storage_hosts_object_server.yml

@@ -75,7 +75,7 @@
     mode: "0644"
   with_items:
     - { src: "object-server.conf.j2", dest: "/etc/swift/object-server/object-server.conf" }
-  notify: Restart swift services
+  notify: Restart swift object services
 
 # We only create the dedicated replicator configuration when using a dedicated replication_network
 - name: "Swift object server configuration"
@@ -90,4 +90,4 @@
   when: >
     swift.replication_network is defined and
     swift.replication_network != swift.storage_network
-  notify: Restart swift services
+  notify: Restart swift object services

tasks/swift_upstart_common_init.yml

@@ -20,8 +20,7 @@
     mode: "0644"
     owner: "root"
     group: "root"
-  notify:
-    - Restart swift services
+  register: init_script
   tags:
     - upstart-init
     - swift-init
@@ -29,8 +28,7 @@
 - name: Reload init scripts
   shell: |
     initctl reload-configuration
-  notify:
-    - Restart swift services
+  when: init_script|changed
   tags:
     - upstart-init
     - swift-init
@@ -39,8 +37,8 @@
   service:
    name: "{{ program_name }}"
    enabled: "yes"
-  notify:
-    - Restart swift services
+   state: restarted
+  when: init_script|changed
   tags:
     - upstart-init
     - swift-init