---
# 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: Create encryption config
  openstack.config_template.config_template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: "root"
    group: "root"
    mode: "{{ item.mode | default('0644') }}"
    config_overrides: "{{ item.config_overrides }}"
    config_type: "{{ item.config_type }}"
    ignore_none_type: False
  when: item.condition | default(True)
  with_items:
    - src: encryption.cnf.j2
      dest: "{{ galera_etc_include_dir }}/encryption.cnf"
      config_overrides: "{{ galera_encryption_overrides }}"
      config_type: "ini"
  notify: Restart all mysql

- name: use encryption with the file key management plugin
  block:
    - name: Create encryption directory
      file:
        path: "/etc/mysql/encryption"
        state: "directory"
        owner: "mysql"
        group: "mysql"
        mode: "0755"

    - name: Create a fact for the name of the temporary directory
      set_fact:
        galera_db_encryption_tmp_dir: "{{ lookup('env', 'OSA_CONFIG_DIR') | default(osa_config_dir, True) }}/mysql"
      delegate_to: "localhost"
      run_once: true
      when: galera_db_encryption_tmp_dir | length == 0

    - name: Create a temporary directory to store the keyfile
      file:
        path: "{{ galera_db_encryption_tmp_dir }}"
        state: directory
      delegate_to: "localhost"
      run_once: true

    - name: Create encryption keys if the user does not specify them and put them on the deploy host
      shell: "for i in {1..2}; do echo \"$i;$(openssl rand -hex 32)\"; done | tee {{ galera_db_encryption_tmp_dir }}/mysql_encryption_keys > /dev/null"
      delegate_to: "localhost"
      run_once: true
      when:
        - galera_db_encryption_keys is not defined

    - name: Create the encryption key file from the user provided galera_db_encryption_keys
      shell: "echo '{{ galera_db_encryption_keys }}' > {{ galera_db_encryption_tmp_dir }}/mysql_encryption_keys"
      delegate_to: "localhost"
      run_once: true
      when:
        - galera_db_encryption_keys is defined

    - name: Create an encrypted keyfile using encryption key
      command: "openssl enc -aes-256-cbc -md sha1 -k {{ galera_db_encryption_password }} -in {{ galera_db_encryption_tmp_dir }}/mysql_encryption_keys -out {{ galera_db_encryption_tmp_dir }}/mysql_encryption_keyfile.enc"
      delegate_to: "localhost"
      run_once: true

    - name: Copy encypted keyfile to servers
      copy:
        src: "{{ galera_db_encryption_tmp_dir }}/mysql_encryption_keyfile.enc"
        dest: "/etc/mysql/encryption/keyfile.enc"
        owner: mysql
        group: mysql
        mode: 0600
        force: false  # only copy the file if it does not exist
      notify: Restart all mysql

    - name: Copy password to file to servers
      copy:
        content: "{{ galera_db_encryption_password }}"
        dest: "/etc/mysql/encryption/.keyfile.key"
        owner: mysql
        group: mysql
        mode: 0600
  when:
    - galera_mariadb_encryption_plugin == "file_key_management"