Backport generic systemd integration from amq_streams collection into common

galaxy.yml

@@ -1,7 +1,7 @@
 ---
 namespace: middleware_automation
 name: common
-version: "1.2.3"
+version: "1.2.4"
 readme: README.md
 authors:
   - Andrew Block <ablock@redhat.com>

roles/common/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+common_systemd_home: '/usr/lib/systemd/system'
+common_systemd_default_unit_template: 'templates/service_systemd.j2'

roles/common/tasks/systemd.yml

@@ -0,0 +1,98 @@
+---
+- name: "Ensure that required parameter(s) are provided."
+  ansible.builtin.assert:
+    that:
+      - server_name is defined and server_name | length > 0
+      - server_restart_handler_name is defined and server_restart_handler_name | length > 0
+    quiet: true
+
+- name: "Switch to root"
+  become: "{{ common_escalade_privileges | default(True) }}"
+  block:
+    - name: "Ensure {{ server_name }} configuration is deployed ({{ server_config_template }} -> {{ server_config }}."
+      ansible.builtin.template:
+        src: "{{ server_config_template }}"
+        dest: "{{ server_config }}"
+        owner: root
+        group: root
+        mode: 0644
+      when:
+        - server_config_template is defined and server_config is defined
+        - server_config_template | length > 0 and server_config | length > 0
+      notify:
+        - "{{ server_restart_handler_name }}"
+
+    - name: "Ensure log dir belongs to the appropriate user and group - if all provided"
+      ansible.builtin.file:
+        path: "{{ server_log_dir }}"
+        owner: "{{ server_user }}"
+        group: "{{ server_group }}"
+        state: directory
+        mode: 0755
+      when:
+        - server_log_dir is defined
+        - server_user is defined
+        - server_group is defined
+
+    - name: "Deploy server configuration - if provided."
+      ansible.builtin.template:
+        src: "{{ service_systemd_env_file_template | default('templates/service.conf.j2') }}"
+        dest: "{{ service_systemd_env_file }}"
+        owner: root
+        group: root
+        mode: 0644
+        selevel: "{{ server_envfile_selevel | default('s0') }}"
+        serole: "{{ server_envfile_serole | default('object_r') }}"
+        setype: "{{ server_envfile_setype | default('etc_t') }}"
+        seuser: "{{ server_envfile_seuser | default('system_u') }}"
+      register: daemon_reload_env
+      when:
+        - service_systemd_env_file is defined
+
+    - name: "Compute default path for systemd unit file (if needed)."
+      ansible.builtin.set_fact:
+        server_systemd_path_to_unit: "{{ server_systemd_home | default(common_systemd_home) }}/{{ server_systemd_name | default(server_name + '.service') }}"
+      when:
+        - not server_systemd_name is defined
+
+    - name: "Deploy Systemd descriptor for service: {{ server_name }}"
+      ansible.builtin.template:
+        src: "{{ server_service_config_file_template | default(common_systemd_default_unit_template) }}"
+        dest: "{{ server_systemd_path_to_unit }}"
+        group: root
+        owner: root
+        mode: 0644
+        selevel: "{{ server_systemd_unit_selevel | default('s0') }}"
+        serole: "{{ server_systemd_unit_serole | default('object_r') }}"
+        setype: "{{ server_systemd_unit_setype | default('systemd_unit_file_t') }}"
+        seuser: "{{ server_systemd_unit_seuser | default('system_u') }}"
+      vars:
+        service_description: "{{ server_description | default(server_name) }}"
+        service_user: "{{ server_user | default('root') }}"
+        service_group: "{{ server_group | default('root') }}"
+        service_pidfile: "{{ server_pidfile | default(omit) }}"
+        service_start_sleep: "{{ server_start_sleep | default(0) }}"
+      register: daemon_reload
+
+    - name: "Perform daemon-reload to ensure the changes are picked up"
+      ansible.builtin.systemd:
+        daemon_reload: yes
+      when:
+        - daemon_reload is defined
+        - daemon_reload.changed
+
+    - name: "Ensure {{ server_name }} is enabled and running."
+      ansible.builtin.service:
+        name: "{{ server_name }}"
+        enabled: yes
+        state: started
+      when:
+        - not server_skip_start is defined or not server_skip_start
+
+    - name: "Wait for service port {{ server_port }} to be available - (if provided)"
+      ansible.builtin.wait_for:
+        port: "{{ server_port }}"
+        delay: "{{ delay_before_server_port_check | default(omit) }}"
+      when:
+        - skip_wait_for_server_port is defined and not skip_wait_for_server_port
+        - server_port is defined and server_port != ''

roles/common/templates/service_systemd.j2

@@ -0,0 +1,28 @@
+# {{ ansible_managed }}
+
+[Unit]
+Description={{ service_description }}
+After=syslog.target network.target
+
+[Service]
+{% if service_systemd_workdir is defined %}WorkingDirectory={{ service_systemd_workdir }}
+{% endif %}
+{% if service_systemd_env_file is defined %}EnvironmentFile=-{{ service_systemd_env_file }}
+{% endif %}
+{% if service_user is defined %}User={{ service_user }}
+{% endif %}
+{% if service_group is defined %}Group={{ service_group }}
+{% endif %}
+#
+#
+ExecStart={{ server_start }} {% if server_config is defined %}{{ server_config }}{% endif %} {% if server_extra_args is defined %}{{ server_extra_args }}{% endif %}
+
+{% if service_start_sleep | int > 0 %}
+ExecStartPre=/bin/sleep {{ service_start_sleep | int / 1000 }}
+{% endif %}
+{% if server_stop is defined %}
+ExecStop={{ server_stop }}
+{% endif %}
+
+[Install]
+WantedBy=multi-user.target