---
# Copyright 2016, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Clone the role ansible-role-requirements
  hosts: localhost
  connection: local
  user: root
  gather_facts: false
  tasks:
    - name: Gather minimal facts
      setup:
        gather_subset: '!all'

    - name: Find the git version
      command:
        cmd: "git --version"
      register: _git_version
      changed_when: false
      tags:
        - skip_ansible_lint

    - name: Set the git user agent for the deploy host
      git_config:
        scope: system
        name: http.https://opendev.org/.userAgent
        value: "{{ 'git/' ~ _git_version.stdout.split(' ')[2] ~ ' (osa/' ~ lookup('env', 'CURRENT_OSA_VERSION') ~ '/deploy)' }}"

    - name: Remove target directory if required
      file:
        path: "{{ item.path | default(role_path_default) }}/{{ item.name | default(item.src | basename) }}"
        state: absent
      when:
        - ((item.path | default(role_path_default) ~ '/' ~ item.name | default(item.src | basename) ~ '/.git') is not directory) or
          (lookup('env', 'DROP_ROLE_DIRS') | bool is true)
      with_items: "{{ required_roles }}"

    - name: Ensure the default roles directory exists
      file:
        path: "{{ role_path_default }}"
        state: directory

    - name: Use Zuul provided sources in Zuul environment
      block:
        - name: Set Zuul sources path
          set_fact:
            zuul_src_path: "{{ lookup('env', 'ZUUL_SRC_PATH') }}"
        - name: Check the Zuul src dir for cloned roles
          stat:
            path: "{{ zuul_src_path }}/{{ item.src.split('/')[-3:] | join('/') }}"
            get_attributes: no
            get_checksum: no
            get_mime: no
          register: zuul_roles
          when:
            - item.scm == "git" or item.scm is undefined
          with_items: "{{ required_roles }}"
        - name: Link the Zuul provided roles
          file:
            src: "{{ zuul_src_path }}/{{ item.item.src.split('/')[-3:] | join('/') }}"
            dest: "{{ item.item.path | default(role_path_default) }}/{{ item.item.name | default(item.item.src | basename) }}"
            state: link
            owner: root
            group: root
          with_items: "{{ zuul_roles.results
                          | selectattr('stat.exists')
                          | list }}"
        # NOTE(mnaser): We need to make sure that all the roles
        #               are checked out by Zuul so we hard fail
        #               if any roles are not.
        - name: Fail if any roles were not cloned
          fail:
            msg: |
              The following roles were not cloned automatically by Zuul,
              make sure that they're included in required-projects {{ uncloned_roles|join(',') }}
          when: uncloned_roles | length > 0
          vars:
            uncloned_roles: "{{ zuul_roles.results | rejectattr('stat.exists')
                                                   | map(attribute='item')
                                                   | map(attribute='src')
                                                   | select('match', 'opendev.org')
                                                   | list }}"

        # Use the cached repos in the CI images rather than clone from opendev.org
        - name: Generate list of openstack service repositories
          set_fact:
            service_git_repos: "{{ lookup('file', openstack_services_file).splitlines() |
                                   select('contains', 'git_repo') |
                                   select('contains', 'opendev.org') | list |
                                   replace('https://', 'file:///openstack/src/') }}"

        - name: Ensure overrides directory exists
          file:
            path: '/etc/openstack_deploy'
            state: directory

        - name: Create overrides for openstack_services git repos to use local cache
          blockinfile:
            path: '/etc/openstack_deploy/user_variables_zuulrepos.yml'
            block: "{{ service_git_repos | join('\n') }}"
            create: yes

      when:
        - "lookup('env', 'ZUUL_SRC_PATH') != ''"
        - "lookup('env', 'UPGRADE_TARGET_BRANCH') == ''"
    - name: Generate a list of user overridden roles
      set_fact:
        user_overridden_roles: "{{ user_roles | json_query('[*].name') }}"

    - name: Generate a list of roles excluding user overridden roles
      set_fact:
        clone_roles: "{{ (clone_roles | default([])) + [ item ] }}"
      when:
        - item.scm == "git" or item.scm is undefined
        - item.name not in user_overridden_roles
      with_items: "{{ (zuul_roles.results | default([]) |
                       selectattr('stat', 'defined') |
                       rejectattr('stat.exists') |
                       map(attribute='item') | list)
                      | default(required_roles, True) }}"

    - name: Append user overridden roles
      set_fact:
        clone_roles: "{{ clone_roles + user_roles }}"

    - name: Clone git repos
      block:
        - name: Clone git repos (parallel)
          git_requirements:
            default_path: "{{ role_path_default }}"
            default_depth: "{{ role_clone_default_depth }}"
            default_version: "master"
            repo_info: "{{ clone_roles }}"
            retries: "{{ git_clone_retries }}"
            delay: "{{ git_clone_retry_delay }}"
            force: true
            core_multiplier: 4
      rescue:
        - name: Clone git repos (with git)
          git:
            repo: "{{ item.src }}"
            dest: "{{ item.path | default(role_path_default) }}/{{ item.name | default(item.src | basename) }}"
            version: "{{ item.version | default('master') }}"
            refspec: "{{ item.refspec | default(omit) }}"
            depth: "{{ item.depth | default(role_clone_default_depth| default(omit)) }}"
            update: true
            force: true
          with_items: "{{ clone_roles }}"
          register: git_clone
          until: git_clone is success
          retries: "{{ git_clone_retries }}"
          delay: "{{ git_clone_retry_delay }}"

  vars:
    ansible_python_interpreter: "/opt/ansible-runtime/bin/python"
    required_roles: "{{ lookup('file', role_file) | from_yaml }}"
    openstack_services_file: "{{ playbook_dir }}/../playbooks/defaults/repo_packages/openstack_services.yml"
    role_file: "{{ playbook_dir }}/../ansible-role-requirements.yml"
    role_path_default: '/etc/ansible/roles'
    user_roles: "{{ lookup('file', user_role_path, errors='ignore')|default([], true) | from_yaml }}"
    user_role_path: "{{ lookup('env', 'OSA_CONFIG_DIR') | default('/etc/openstack_deploy', true) ~ '/' ~ (user_role_file|default('')) }}"
    git_clone_retries: 2
    git_clone_retry_delay: 5
    role_clone_default_depth: 20