uclalib_ansible_capdeploy.yml

---

- name: uclalib_ansible_capdeploy.yml
  hosts: all

  tasks:
    - name: Ensure ansible user is defined
      set_fact:
        ansible_username: "{{ ansible_user | default('ansible') }}"

    - name: Ensure capistrano deploy user is defined
      set_fact:
        cap_user: "{{ capistrano_user | default('deploy') }}"

    - name: Ensure capistrano base path is defined
      set_fact:
        cap_base: "{{ capistrano_base | default('/opt') }}"

    - name: Set feature flag for capistrano deploy
      set_fact:
        cap_feature_flag: "{{ feature_flag | default('empty') }}"

    - name: Determine if content ingest rake process is running
      command: >
        pgrep -fau {{ cap_user }} rake
      ignore_errors: true
      changed_when: false
      register: ingest_rake_process

    - name: Aborted
      fail:
        msg: "Content ingest is in progress - code deploy stopped."
      when: ingest_rake_process.rc == 0

    - name: deploy
      block:
        - name: Obtain a fresh clone of the project's git repository
          become: true
          become_user: "{{ ansible_username }}"
          git:
            repo: "{{ git_repo_url }}"
            dest: "/home/{{ ansible_username }}/{{ project_name }}"
            version: "{{ git_repo_branch }}"

        - name: Get bundled-with version
          command:
            cmd: sed -n '/BUNDLED WITH/{n;p;}' Gemfile.lock # noqa command-instead-of-module
            chdir: "/home/{{ ansible_username }}/{{ project_name }}"
          changed_when: false
          check_mode: false
          register: bundler_version

        - name: Install Versioned Bundler
          gem:
            name: bundler
            version: '{{ bundler_version.stdout | trim }}'
            force: true
            state: present
            user_install: false

        - name: Install required project gems
          bundler:
            state: present
            chdir: "/home/{{ ansible_username }}/{{ project_name }}"

        - name: Execute capistrano deployment of project
          become: true
          become_user: "{{ ansible_username }}"
          shell: >
            ssh-agent sh -c 'ssh-add; BRANCH={{ git_repo_branch }} PATH=/home/ansible/.local/bin:/home/ansible/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin bundle exec cap localhost deploy'
          args:
            chdir: /home/{{ ansible_username }}/{{ project_name }}
          changed_when: true
          when: cap_feature_flag == 'empty'

        - name: Execute capistrano deployment of project with feature flag
          become: true
          become_user: "{{ ansible_username }}"
          shell: >
            ssh-agent sh -c 'ssh-add; BRANCH={{ git_repo_branch }} FEATURE_FLAG={{ cap_feature_flag }} bundle exec cap localhost deploy'
          args:
            chdir: /home/{{ ansible_username }}/{{ project_name }}
          changed_when: true
          when: cap_feature_flag != 'empty'

        - name: Remove existing/default robots.txt file
          file:
            path: "{{ cap_base }}/{{ project_name }}/current/public/robots.txt"
            state: "absent"
          become: true
          become_user: "{{ capistrano_user }}"

        - name: Allow search engine crawling of this site
          file:
            src: "{{ cap_base }}/{{ project_name }}/current/public/robots_allow.txt"
            path: "{{ cap_base }}/{{ project_name }}/current/public/robots.txt"
            state: "link"
          become: true
          become_user: "{{ capistrano_user }}"
          when: allow_web_crawl == "yes"

        - name: Disallow search engine crawling of this site
          file:
            src: "{{ cap_base }}/{{ project_name }}/current/public/robots_disallow.txt"
            path: "{{ cap_base }}/{{ project_name }}/current/public/robots.txt"
            state: "link"
          become: true
          become_user: "{{ capistrano_user }}"
          when: allow_web_crawl == "no"

        - name: Enable Stack Tracing
          lineinfile:
            path: '{{ cap_base }}/{{ project_name }}/current/config/environments/production.rb'
            line: '\1true'
            regexp: '(\s*config.consider_all_requests_local\s*=\s*)false'
            backrefs: true
            state: present
          become: true
          become_user: "{{ capistrano_user }}"
          when:
            - (allow_stack_trace|default('false')) | bool
            - (stack_trace|default('false')) | bool

        - name: Restart Apache HTTPD to reload passenger application
          systemd:
            name: httpd
            state: restarted
          become: true

      always: # deploy block
        - name: Clean-up ansible user project deploy directory
          file:
            path: "/home/{{ ansible_username }}/{{ project_name }}"
            state: absent