library/roles/redis: Cleanup the redis role.

redis/defaults/main.yml

@@ -1,4 +1,5 @@
 ---
+redis_install: False
 redis_enabled: True
 # https://launchpad.net/~chris-lea/+archive/ubuntu/redis-server
 redis_ppa_repo: ppa:chris-lea/redis-server

redis/tasks/main.yml

@@ -1,19 +1,34 @@
 ---
-- name: Install the Redis PPA
+- block:
+    - name: Install the Redis PPA
       apt_repository: repo='{{ redis_ppa_repo }}' update_cache=yes
-  tags: redis
 
-- name: Install the Redis package
-  apt: pkg={{ item }} state=present
+    - name: Install the Redis packages
+      apt: pkg={{ item }} state={[ redis_pkg_state }} cache_valid_time=1800
       with_items: '{{ redis_server_pkg }}'
-  tags: redis
 
-- name: Start and enable the Redis service
+    - name: Start and enable the Redis service
       service: name=redis-server state=started enabled=yes
       when: redis_enabled
-  tags: redis
 
-- name: Stop and disable the Redis service
+    - name: Stop and disable the Redis service
       service: name=redis-server state=stopped enabled=no
       when: not redis_enabled
+
+  when: redis_install
+  tags: redis 
+
+
+- block:
+    - name: Stop and disable the Redis service
+      service: name=redis-server state=stopped enabled=no
+
+    - name: Remove the Redis packages
+      apt: pkg={{ item }} state=absent
+      with_items: '{{ redis_server_pkg }}'
+
+    - name: Remove the Redis PPA
+      apt_repository: repo='{{ redis_ppa_repo }}' state=absent update_cache=yes
+
+  when: not redis_install
   tags: redis