Allow to use t-h-t "healthcheck" config entry for podman

Until now, paunch configures the "healthcheck" systemd unit
with a hard-coded path, while we can set it in tripleo-heat-templates.

Change-Id: Ic15bfb974e53703bfaf324be7d1b9b0352e2e644

paunch/builder/base.py

@@ -109,8 +109,9 @@ class BaseBuilder(object):
                                            cconfig=cconfig,
                                            log=self.log)
                     if 'healthcheck' in cconfig:
+                        check = cconfig.get('healthcheck')['test']
                         systemd.healthcheck_create(container=container_name,
-                                                   log=self.log)
+                                                   log=self.log, test=check)
                         systemd.healthcheck_timer_create(
                             container=container_name,
                             cconfig=cconfig,

paunch/tests/test_utils_systemd.py

@@ -115,6 +115,20 @@ class TestUtilsSystemd(base.TestCase):
                       '/openstack/healthcheck', unit)
         mock_chmod.assert_has_calls([mock.call(sysd_unit_f, 420)])
 
+    @mock.patch('os.chmod')
+    def test_healthcheck_create_command(self, mock_chmod):
+        container = 'my_app'
+        service = 'tripleo_' + container
+        tempdir = tempfile.mkdtemp()
+        healthcheck = service + '_healthcheck.service'
+        sysd_unit_f = tempdir + healthcheck
+        check = '/foo/bar baz'
+
+        systemd.healthcheck_create(container, tempdir, test=check)
+        unit = open(sysd_unit_f, 'rt').read()
+        self.assertIn('ExecStart=/usr/bin/podman exec my_app '
+                      '/foo/bar baz', unit)
+
     @mock.patch('subprocess.check_call', autospec=True)
     @mock.patch('os.chmod')
     def test_healthcheck_timer_create(self, mock_chmod,

paunch/utils/systemd.py

@@ -134,7 +134,8 @@ def service_delete(container, sysdir=constants.SYSTEMD_DIR, log=None):
             log.info('No systemd unit file was found for %s' % sysd_f)
 
 
-def healthcheck_create(container, sysdir='/etc/systemd/system/', log=None):
+def healthcheck_create(container, sysdir='/etc/systemd/system/',
+                       log=None, test='/openstack/healthcheck'):
     """Create a healthcheck for a service in systemd
 
     :param container: container name
@@ -145,6 +146,9 @@ def healthcheck_create(container, sysdir='/etc/systemd/system/', log=None):
 
     :param log: optional pre-defined logger for messages
     :type log: logging.RootLogger
+
+    :param test: optional test full command
+    :type test: String
     """
 
     log = log or common.configure_logging(__name__)
@@ -157,6 +161,7 @@ def healthcheck_create(container, sysdir='/etc/systemd/system/', log=None):
         'name': container,
         'service': service,
         'restart': 'restart',
+        'test': test,
     }
     with open(sysd_unit_f, 'w') as unit_file:
         os.chmod(unit_file.name, 0o644)
@@ -166,7 +171,7 @@ After=paunch-container-shutdown.service
 Requisite=%(service)s.service
 [Service]
 Type=oneshot
-ExecStart=/usr/bin/podman exec %(name)s /openstack/healthcheck
+ExecStart=/usr/bin/podman exec %(name)s %(test)s
 [Install]
 WantedBy=multi-user.target
 """ % s_config)

releasenotes/notes/custom-healthcheck-06dd2993268fc760.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Allows to configure the healthcheck as set in tripleo-heat-templates