1 files changed, 305 insertions, 0 deletions
diff --git a/ansible_collections/community/general/plugins/modules/svc.py b/ansible_collections/community/general/plugins/modules/svc.py
new file mode 100644
index 000000000..bd2eaeb22
--- /dev/null
+++ b/ansible_collections/community/general/plugins/modules/svc.py
@@ -0,0 +1,305 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2015, Brian Coca <bcoca@ansible.com>
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+DOCUMENTATION = '''
+---
+module: svc
+author:
+- Brian Coca (@bcoca)
+short_description: Manage daemontools services
+description:
+    - Controls daemontools services on remote hosts using the svc utility.
+extends_documentation_fragment:
+    - community.general.attributes
+attributes:
+    check_mode:
+        support: full
+    diff_mode:
+        support: none
+options:
+    name:
+        description:
+            - Name of the service to manage.
+        type: str
+        required: true
+    state:
+        description:
+            - C(Started)/C(stopped) are idempotent actions that will not run
+              commands unless necessary.  C(restarted) will always bounce the
+              svc (svc -t) and C(killed) will always bounce the svc (svc -k).
+              C(reloaded) will send a sigusr1 (svc -1).
+              C(once) will run a normally downed svc once (svc -o), not really
+              an idempotent operation.
+        type: str
+        choices: [ killed, once, reloaded, restarted, started, stopped ]
+    downed:
+        description:
+            - Should a 'down' file exist or not, if it exists it disables auto startup.
+              Defaults to no. Downed does not imply stopped.
+        type: bool
+    enabled:
+        description:
+            - Whether the service is enabled or not, if disabled it also implies stopped.
+              Take note that a service can be enabled and downed (no auto restart).
+        type: bool
+    service_dir:
+        description:
+            - Directory svscan watches for services
+        type: str
+        default: /service
+    service_src:
+        description:
+            - Directory where services are defined, the source of symlinks to service_dir.
+        type: str
+        default: /etc/service
+'''
+
+EXAMPLES = '''
+- name: Start svc dnscache, if not running
+  community.general.svc:
+    name: dnscache
+    state: started
+
+- name: Stop svc dnscache, if running
+  community.general.svc:
+    name: dnscache
+    state: stopped
+
+- name: Kill svc dnscache, in all cases
+  community.general.svc:
+    name: dnscache
+    state: killed
+
+- name: Restart svc dnscache, in all cases
+  community.general.svc:
+    name: dnscache
+    state: restarted
+
+- name: Reload svc dnscache, in all cases
+  community.general.svc:
+    name: dnscache
+    state: reloaded
+
+- name: Using alternative svc directory location
+  community.general.svc:
+    name: dnscache
+    state: reloaded
+    service_dir: /var/service
+'''
+
+import os
+import re
+import traceback
+
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.common.text.converters import to_native
+
+
+def _load_dist_subclass(cls, *args, **kwargs):
+    '''
+    Used for derivative implementations
+    '''
+    subclass = None
+
+    distro = kwargs['module'].params['distro']
+
+    # get the most specific superclass for this platform
+    if distro is not None:
+        for sc in cls.__subclasses__():
+            if sc.distro is not None and sc.distro == distro:
+                subclass = sc
+    if subclass is None:
+        subclass = cls
+
+    return super(cls, subclass).__new__(subclass)
+
+
+class Svc(object):
+    """
+    Main class that handles daemontools, can be subclassed and overridden in case
+    we want to use a 'derivative' like encore, s6, etc
+    """
+
+    # def __new__(cls, *args, **kwargs):
+    #    return _load_dist_subclass(cls, args, kwargs)
+
+    def __init__(self, module):
+        self.extra_paths = ['/command', '/usr/local/bin']
+        self.report_vars = ['state', 'enabled', 'downed', 'svc_full', 'src_full', 'pid', 'duration', 'full_state']
+
+        self.module = module
+
+        self.name = module.params['name']
+        self.service_dir = module.params['service_dir']
+        self.service_src = module.params['service_src']
+        self.enabled = None
+        self.downed = None
+        self.full_state = None
+        self.state = None
+        self.pid = None
+        self.duration = None
+
+        self.svc_cmd = module.get_bin_path('svc', opt_dirs=self.extra_paths)
+        self.svstat_cmd = module.get_bin_path('svstat', opt_dirs=self.extra_paths)
+        self.svc_full = '/'.join([self.service_dir, self.name])
+        self.src_full = '/'.join([self.service_src, self.name])
+
+        self.enabled = os.path.lexists(self.svc_full)
+        if self.enabled:
+            self.downed = os.path.lexists('%s/down' % self.svc_full)
+            self.get_status()
+        else:
+            self.downed = os.path.lexists('%s/down' % self.src_full)
+            self.state = 'stopped'
+
+    def enable(self):
+        if os.path.exists(self.src_full):
+            try:
+                os.symlink(self.src_full, self.svc_full)
+            except OSError as e:
+                self.module.fail_json(path=self.src_full, msg='Error while linking: %s' % to_native(e))
+        else:
+            self.module.fail_json(msg="Could not find source for service to enable (%s)." % self.src_full)
+
+    def disable(self):
+        try:
+            os.unlink(self.svc_full)
+        except OSError as e:
+            self.module.fail_json(path=self.svc_full, msg='Error while unlinking: %s' % to_native(e))
+        self.execute_command([self.svc_cmd, '-dx', self.src_full])
+
+        src_log = '%s/log' % self.src_full
+        if os.path.exists(src_log):
+            self.execute_command([self.svc_cmd, '-dx', src_log])
+
+    def get_status(self):
+        rc, out, err = self.execute_command([self.svstat_cmd, self.svc_full])
+
+        if err is not None and err:
+            self.full_state = self.state = err
+        else:
+            self.full_state = out
+
+            m = re.search(r'\(pid (\d+)\)', out)
+            if m:
+                self.pid = m.group(1)
+
+            m = re.search(r'(\d+) seconds', out)
+            if m:
+                self.duration = m.group(1)
+
+            if re.search(' up ', out):
+                self.state = 'start'
+            elif re.search(' down ', out):
+                self.state = 'stopp'
+            else:
+                self.state = 'unknown'
+                return
+
+            if re.search(' want ', out):
+                self.state += 'ing'
+            else:
+                self.state += 'ed'
+
+    def start(self):
+        return self.execute_command([self.svc_cmd, '-u', self.svc_full])
+
+    def stopp(self):
+        return self.stop()
+
+    def stop(self):
+        return self.execute_command([self.svc_cmd, '-d', self.svc_full])
+
+    def once(self):
+        return self.execute_command([self.svc_cmd, '-o', self.svc_full])
+
+    def reload(self):
+        return self.execute_command([self.svc_cmd, '-1', self.svc_full])
+
+    def restart(self):
+        return self.execute_command([self.svc_cmd, '-t', self.svc_full])
+
+    def kill(self):
+        return self.execute_command([self.svc_cmd, '-k', self.svc_full])
+
+    def execute_command(self, cmd):
+        try:
+            rc, out, err = self.module.run_command(cmd)
+        except Exception as e:
+            self.module.fail_json(msg="failed to execute: %s" % to_native(e), exception=traceback.format_exc())
+        return (rc, out, err)
+
+    def report(self):
+        self.get_status()
+        states = {}
+        for k in self.report_vars:
+            states[k] = self.__dict__[k]
+        return states
+
+
+# ===========================================
+# Main control flow
+
+def main():
+    module = AnsibleModule(
+        argument_spec=dict(
+            name=dict(type='str', required=True),
+            state=dict(type='str', choices=['killed', 'once', 'reloaded', 'restarted', 'started', 'stopped']),
+            enabled=dict(type='bool'),
+            downed=dict(type='bool'),
+            service_dir=dict(type='str', default='/service'),
+            service_src=dict(type='str', default='/etc/service'),
+        ),
+        supports_check_mode=True,
+    )
+
+    module.run_command_environ_update = dict(LANG='C', LC_ALL='C', LC_MESSAGES='C', LC_CTYPE='C')
+
+    state = module.params['state']
+    enabled = module.params['enabled']
+    downed = module.params['downed']
+
+    svc = Svc(module)
+    changed = False
+    orig_state = svc.report()
+
+    if enabled is not None and enabled != svc.enabled:
+        changed = True
+        if not module.check_mode:
+            try:
+                if enabled:
+                    svc.enable()
+                else:
+                    svc.disable()
+            except (OSError, IOError) as e:
+                module.fail_json(msg="Could not change service link: %s" % to_native(e))
+
+    if state is not None and state != svc.state:
+        changed = True
+        if not module.check_mode:
+            getattr(svc, state[:-2])()
+
+    if downed is not None and downed != svc.downed:
+        changed = True
+        if not module.check_mode:
+            d_file = "%s/down" % svc.svc_full
+            try:
+                if downed:
+                    open(d_file, "a").close()
+                else:
+                    os.unlink(d_file)
+            except (OSError, IOError) as e:
+                module.fail_json(msg="Could not change downed file: %s " % (to_native(e)))
+
+    module.exit_json(changed=changed, svc=svc.report())
+
+
+if __name__ == '__main__':
+    main()