[2.9] Handle disabled service units (#69804)

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>
(cherry picked from commit 723a904f4e)

lib/ansible/modules/system/service_facts.py

@@ -35,7 +35,7 @@ author:
 '''
 
 EXAMPLES = '''
-- name: populate service facts
+- name: Populate service facts
   service_facts:
 
 - debug:
@@ -218,7 +218,11 @@ class SystemctlScanService(BaseService):
             except IndexError:
                 self.module.fail_json(msg="Malformed output discovered from systemd list-unit-files: {0}".format(line))
             if service_name not in services:
-                services[service_name] = {"name": service_name, "state": "unknown", "status": status_val, "source": "systemd"}
+                rc, stdout, stderr = self.module.run_command("%s show %s --property=ActiveState" % (systemctl_path, service_name), use_unsafe_shell=True)
+                state = 'unknown'
+                if not rc and stdout != '':
+                    state = stdout.replace('ActiveState=', '').rstrip()
+                services[service_name] = {"name": service_name, "state": state, "status": status_val, "source": "systemd"}
             else:
                 services[service_name]["status"] = status_val
         return services

test/integration/targets/service_facts/files/ansible.systemd

@@ -0,0 +1,11 @@
+[Unit]
+Description=Ansible Test Service
+
+[Service]
+ExecStart=/usr/sbin/ansible_test_service "Test\nthat newlines in scripts\nwork"
+ExecReload=/bin/true
+Type=forking
+PIDFile=/var/run/ansible_test_service.pid
+
+[Install]
+WantedBy=multi-user.target

test/integration/targets/service_facts/files/ansible_test_service.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+
+# this is mostly based off of the code found here:
+# http://code.activestate.com/recipes/278731-creating-a-daemon-the-python-way/
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+import os
+import resource
+import signal
+import time
+
+UMASK = 0
+WORKDIR = "/"
+MAXFD = 1024
+
+if (hasattr(os, "devnull")):
+    REDIRECT_TO = os.devnull
+else:
+    REDIRECT_TO = "/dev/null"
+
+
+def createDaemon():
+    try:
+        pid = os.fork()
+    except OSError as e:
+        raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+    if (pid == 0):
+        os.setsid()
+
+        try:
+            pid = os.fork()
+        except OSError as e:
+            raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+        if (pid == 0):
+            os.chdir(WORKDIR)
+            os.umask(UMASK)
+        else:
+            f = open('/var/run/ansible_test_service.pid', 'w')
+            f.write("%d\n" % pid)
+            f.close()
+            os._exit(0)
+    else:
+        os._exit(0)
+
+    maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
+    if (maxfd == resource.RLIM_INFINITY):
+        maxfd = MAXFD
+
+    for fd in range(0, maxfd):
+        try:
+            os.close(fd)
+        except OSError:  # ERROR, fd wasn't open to begin with (ignored)
+            pass
+
+    os.open(REDIRECT_TO, os.O_RDWR)
+    os.dup2(0, 1)
+    os.dup2(0, 2)
+
+    return (0)
+
+
+if __name__ == "__main__":
+
+    signal.signal(signal.SIGHUP, signal.SIG_IGN)
+
+    retCode = createDaemon()
+
+    while True:
+        time.sleep(1000)

test/integration/targets/service_facts/tasks/main.yml

@@ -1,20 +1,7 @@
 # Test playbook for the service_facts module
-# (c) 2017, Adam Miller <admiller@redhat.com>
-
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+# Copyright: (c) 2017, Adam Miller <admiller@redhat.com>
+# Copyright: (c) 2020, Abhijeet Kasurde <akasurde@redhat.com>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
 - name: Gather service facts
   service_facts:
@@ -22,3 +9,17 @@
 - name: check for ansible_facts.services exists
   assert:
     that: ansible_facts.services is defined
+
+- name: Test disabled service facts (https://github.com/ansible/ansible/issues/69144)
+  block:
+  - name: display value of ansible_service_mgr
+    debug:
+      msg: 'ansible_service_mgr: {{ ansible_service_mgr }}'
+
+  - name: setup test service script
+    include_tasks: 'systemd_setup.yml'
+
+  - name: execute tests
+    import_tasks: tests.yml
+
+  when: (ansible_distribution in ['RedHat', 'CentOS', 'ScientificLinux'] and ansible_distribution_major_version is version('7', '>=')) or ansible_distribution == 'Fedora' or (ansible_distribution == 'Ubuntu' and ansible_distribution_version is version('15.04', '>=')) or (ansible_distribution == 'Debian' and ansible_distribution_version is version('8', '>=')) or ansible_os_family == 'Suse'

test/integration/targets/service_facts/tasks/systemd_cleanup.yml

@@ -0,0 +1,32 @@
+- name: remove the systemd unit file
+  file:
+    path: /usr/lib/systemd/system/ansible_test.service
+    state: absent
+  register: remove_systemd_result
+
+- name: assert that the systemd unit file was removed
+  assert:
+    that:
+    - "remove_systemd_result.path == '/usr/lib/systemd/system/ansible_test.service'"
+    - "remove_systemd_result.state == 'absent'"
+
+- name: remove python systemd test script file
+  file:
+    path: /usr/sbin/ansible_test_service
+    state: absent
+  register: remove_systemd_binary_result
+
+- name: assert that python systemd test script file was removed
+  assert:
+    that:
+    - "remove_systemd_binary_result.path == '/usr/sbin/ansible_test_service'"
+    - "remove_systemd_binary_result.state == 'absent'"
+
+- name: make sure systemd is reloaded
+  shell: systemctl daemon-reload
+  register: restart_systemd_result
+
+- name: assert that systemd was reloaded
+  assert:
+    that:
+    - "restart_systemd_result.rc == 0"

test/integration/targets/service_facts/tasks/systemd_setup.yml

@@ -0,0 +1,26 @@
+- name: install the test daemon script
+  copy:
+    src: ansible_test_service.py
+    dest: /usr/sbin/ansible_test_service
+    mode: '755'
+
+- name: rewrite shebang in the test daemon script
+  lineinfile:
+    path: /usr/sbin/ansible_test_service
+    line: "#!{{ ansible_python_interpreter | realpath }}"
+    insertbefore: BOF
+    firstmatch: yes
+
+- name: install the systemd unit file
+  copy:
+    src: ansible.systemd
+    dest: /etc/systemd/system/ansible_test.service
+    mode: '0644'
+  register: install_systemd_result
+
+- name: assert that the systemd unit file was installed
+  assert:
+    that:
+    - "install_systemd_result.dest == '/etc/systemd/system/ansible_test.service'"
+    - "install_systemd_result.state == 'file'"
+    - "install_systemd_result.mode == '0644'"

test/integration/targets/service_facts/tasks/tests.yml

@@ -0,0 +1,36 @@
+- name: start the ansible test service
+  service:
+    name: ansible_test
+    enabled: yes
+    state: started
+  register: enable_result
+
+- name: assert that the service was enabled and changes reported
+  assert:
+    that:
+      - "enable_result.enabled == true"
+      - "enable_result is changed"
+
+- name: disable the ansible test service
+  service:
+    name: ansible_test
+    state: stopped
+    enabled: no
+  register: start_result
+
+- name: assert that the service was stopped
+  assert:
+    that:
+      - "start_result.state == 'stopped'"
+      - "start_result is changed"
+
+- name: Populate service facts
+  service_facts:
+
+- name: get ansible_test service's state
+  debug:
+    var: services['ansible_test.service'].state
+
+- name: ansible_test service's running state should be \"inactive\"
+  assert:
+    that: "services['ansible_test.service'].state == 'inactive'"