feat(restic): migrate to systemd template units

roles/restic/defaults/main/config.yml

@@ -0,0 +1,52 @@
+---
+restic_repo_url: ~
+restic_repo_password: ~
+restic_s3_key_id: ~
+restic_s3_access_key: ~
+
+restic_backup_paths: []
+restic_backup_stdin_command: ~
+restic_backup_stdin_command_filename: ~
+restic_backup_generate_metrics_command: >-2
+  {{ restic_script_generate_snapshot_metrics }}
+
+restic_policy_keep_all_within: 1d
+restic_policy_keep_hourly: 12
+restic_policy_keep_daily: 7
+restic_policy_keep_weekly: 6
+restic_policy_keep_monthly: 6
+restic_policy_keep_yearly: 5
+restic_policy_backup_frequency: hourly
+
+restic_base_environment:
+  RESTIC_REPOSITORY: "{{ restic_repo_url }}"
+  RESTIC_PASSWORD: "{{ restic_repo_password }}"
+  RESTIC_JOBNAME: "{{ restic_job_name }}"
+  RESTIC_FORGET_KEEP_WITHIN: "{{ restic_policy_keep_all_within }}"
+  RESTIC_FORGET_KEEP_HOURLY: "{{ restic_policy_keep_hourly }}"
+  RESTIC_FORGET_KEEP_DAILY: "{{ restic_policy_keep_daily }}"
+  RESTIC_FORGET_KEEP_WEEKLY: "{{ restic_policy_keep_weekly }}"
+  RESTIC_FORGET_KEEP_MONTHLY: "{{ restic_policy_keep_monthly }}"
+  RESTIC_FORGET_KEEP_YEARLY: "{{ restic_policy_keep_yearly }}"
+  RESTIC_GENERATE_SNAPSHOT_METRICS_COMMAND: "{{ restic_backup_generate_metrics_command }}"
+
+restic_s3_environment:
+  AWS_ACCESS_KEY_ID: "{{ restic_s3_key_id }}"
+  AWS_SECRET_ACCESS_KEY: "{{ restic_s3_access_key }}"
+
+restic_complete_environment: >-
+  {{
+    restic_base_environment
+    | combine((restic_s3_environment | default({}))
+      if (restic_s3_key_id and restic_s3_access_key) else {})
+    | combine(restic_environment | default({}))
+  }}
+
+restic_policy:
+  keep_within: "{{ restic_policy_keep_all_within }}"
+  hourly: "{{ restic_policy_keep_hourly }}"
+  daily: "{{ restic_policy_keep_daily }}"
+  weekly: "{{ restic_policy_keep_weekly }}"
+  monthly: "{{ restic_policy_keep_monthly }}"
+  yearly: "{{ restic_policy_keep_yearly }}"
+  frequency: "{{ restic_policy_backup_frequency }}"

roles/restic/defaults/main/main.yml

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+---
+restic_user: root
+restic_user_create: false
+restic_create_user: "{{ restic_user_create }}"
+restic_user_create_home: false
+restic_user_system: false
+
+restic_state: present
+restic_version: "0.17.3"
+restic_job_name: default
+restic_job_state: "{{ restic_state }}"
+restic_job_directory: "/etc/restic"
+
+restic_package_name: restic
+restic_script_generate_snapshot_metrics: "/opt/restic-generate-snapshot-metrics.sh"
+restic_start_job_on_unit_change: true

roles/restic/defaults/main/systemd.yml

@@ -0,0 +1,20 @@
+---
+restic_systemd_job_description: "Restic backup service"
+restic_systemd_unit_naming_scheme: "restic-{{ restic_job_name }}"
+restic_systemd_timer_naming_scheme: >-2
+  {{ restic_systemd_unit_naming_scheme }}.timer
+restic_systemd_timer_state_map:
+  present: "started"
+  absent: "stopped"
+  masked: "started"
+restic_systemd_timer_state: >-2
+  {{ restic_systemd_timer_state_map[restic_job_state] }}
+
+restic_systemd_syslog_identifier: "restic@%i"
+restic_systemd_working_directory: /tmp
+restic_systemd_install_wanted_by: "basic.target"
+restic_systemd_install_default_instance: "default"
+
+restic_systemd_start_job_on_unit_change: false
+restic_systemd_service_exec_start: "/opt/restic-backup.sh"
+