Support for managing services on MacOS using launchctl

Sample usage:

$ sudo salt 'SCML-MarcA.local' service.status homebrew.mxcl.mongodb marca
{'SCML-MarcA.local': True}
$ sudo salt 'SCML-MarcA.local' service.stop homebrew.mxcl.mongodb marca
{'SCML-MarcA.local': ''}
$ sudo salt 'SCML-MarcA.local' service.status homebrew.mxcl.mongodb marca
{'SCML-MarcA.local': False}
$ sudo salt 'SCML-MarcA.local' service.start homebrew.mxcl.mongodb marca
{'SCML-MarcA.local': ''}
$ sudo salt 'SCML-MarcA.local' service.status homebrew.mxcl.mongodb marca
{'SCML-MarcA.local': True}

salt/modules/launchctl.py

@@ -0,0 +1,92 @@
+'''
+Module for the management of MacOS systems that use launchd/launchctl
+'''
+
+import plistlib
+
+
+def __virtual__():
+    '''
+    Only work on MacOS
+    '''
+    if __grains__['os'] == 'MacOS':
+        return 'service'
+    return False
+
+
+def get_all():
+    '''
+    Return all installed services
+
+    CLI Example::
+
+        salt '*' service.get_all
+    '''
+    cmd = 'launchctl list'
+
+    service_lines = [
+        line for line in __salt__['cmd.run'](cmd).splitlines()
+        if not line.startswith('PID')
+    ]
+
+    return sorted([line.split("\t")[2] for line in service_lines])
+
+
+def get_launchctl_data(job_label, runas=None):
+    cmd = 'launchctl list -x {0}'.format(job_label)
+
+    launchctl_xml = __salt__['cmd.run_all'](cmd, runas=runas)['stderr']
+
+    return dict(plistlib.readPlistFromString(launchctl_xml))
+
+
+def status(job_label, runas=None):
+    '''
+    Return the status for a service, returns a bool whether the service is
+    running.
+
+    CLI Example::
+
+        salt '*' service.status <service name>
+    '''
+    launchctl_data = get_launchctl_data(job_label, runas=runas)
+
+    return 'PID' in launchctl_data
+
+
+def stop(job_label, runas=None):
+    '''
+    Stop the specified service
+
+    CLI Example::
+
+        salt '*' service.stop <service name>
+    '''
+    cmd = 'launchctl stop {0}'.format(job_label)
+
+    return __salt__['cmd.run'](cmd, runas=runas)
+
+
+def start(job_label, runas=None):
+    '''
+    Start the specified service
+
+    CLI Example::
+
+        salt '*' service.start <service name>
+    '''
+    cmd = 'launchctl start {0}'.format(job_label, runas=runas)
+
+    return __salt__['cmd.run'](cmd, runas='marca')
+
+
+def restart(job_label, runas=None):
+    '''
+    Restart the named service
+
+    CLI Example::
+
+        salt '*' service.restart <service name>
+    '''
+    stop(job_label, runas=runas)
+    return start(job_label, runas=runas)