Add an option to rollback to a specific release

Author: tonyo

.travis.yml

@@ -4,9 +4,9 @@ dist: trusty
 
 matrix:
   include:
-    - env: ANSIBLE_VERSION=1.8.4
     - env: ANSIBLE_VERSION=1.9.5
-    - env: ANSIBLE_VERSION=2.1.0
+    - env: ANSIBLE_VERSION=2.1.2
+    - env: ANSIBLE_VERSION=2.2.1
 
 before_install:
  - sudo apt-get -y install software-properties-common
@@ -24,4 +24,4 @@ script:
  - ansible-playbook -i inventory --connection=local --sudo -v test/test.yml
 
 notifications:
-  webhooks: https://galaxy.ansible.com/api/v1/notifications/
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

README.md

@@ -104,6 +104,7 @@ Role Variables
   ansistrano_deploy_to: "/var/www/my-app" # Base path to deploy to.
   ansistrano_version_dir: "releases" # Releases folder name
   ansistrano_current_dir: "current" # Softlink name. You should rarely changed it.
+  ansistrano_rollback_to_release: "" # If specified, the application will be rolled back to this release version; previous release otherwise.
   ansistrano_remove_rolled_back: yes # You can change this setting in order to keep the rolled back release in the server for later inspection
   ansistrano_allow_anonymous_stats: yes
 

defaults/main.yml

@@ -11,6 +11,9 @@ ansistrano_current_dir: "current"
 # Remove rolled back release?
 ansistrano_remove_rolled_back: yes
 
+# Rollback to this release version (previous by default)
+ansistrano_rollback_to_release: ""
+
 # Sends anonymous stats to the www.ansistrano.com servers
 # You can disallow it by just setting this parameter to "no" in your playbook
 ansistrano_allow_anonymous_stats: yes

meta/main.yml

@@ -1,10 +1,10 @@
 ---
 galaxy_info:
   author: ansistrano
-  description: Ansible role to roll back scripting applications like PHP, Python, Ruby, etc. in a Capistrano style
+  description: Ansible role to rollback scripting applications like PHP, Python, Ruby, etc. in a Capistrano style
   company: Ansistrano
   license: MIT
-  min_ansible_version: 1.6
+  min_ansible_version: 1.9
   platforms:
   - name: EL
     versions:

tasks/setup.yml

@@ -16,10 +16,24 @@
   shell: echo `ls -1t {{ ansistrano_releases_path.stdout }} | head -n 1`
   register: ansistrano_current_release_version
 
+- stat:
+    path: "{{ ansistrano_releases_path.stdout }}/{{ ansistrano_rollback_to_release }}"
+  register: stat_rollback_release_version
+  when: ansistrano_rollback_to_release != ""
+
+- name: ANSISTRANO | Check that the provided rollback release exists
+  fail:
+    msg: "Specified rollback version does not exist"
+  when: ansistrano_rollback_to_release != "" and (stat_rollback_release_version.stat.exists is not defined or stat_rollback_release_version.stat.isdir == False)
+
 - name: ANSISTRANO | Get previous releases version
   shell: echo `ls -1t {{ ansistrano_releases_path.stdout }} | head -n 2 | tail -n 1`
   register: ansistrano_previous_release_version
 
+- name: ANSISTRANO | Get rollback release version
+  set_fact:
+    ansistrano_rollback_release_version: "{{ ansistrano_rollback_to_release if ansistrano_rollback_to_release != '' else ansistrano_previous_release_version.stdout }}"
+
 - name: ANSISTRANO | Get release path
-  command: echo "{{ ansistrano_releases_path.stdout }}/{{ ansistrano_previous_release_version.stdout }}"
+  command: echo "{{ ansistrano_releases_path.stdout }}/{{ ansistrano_rollback_release_version }}"
   register: ansistrano_release_path

tasks/symlink.yml

@@ -3,4 +3,4 @@
   file:
     state: link
     path: "{{ ansistrano_deploy_to }}/{{ ansistrano_current_dir }}"
-    src: "./{{ ansistrano_version_dir }}/{{ ansistrano_previous_release_version.stdout }}"
+    src: "./{{ ansistrano_version_dir }}/{{ ansistrano_rollback_release_version }}"