Container logs is not good user experience

Zun only supports stdout and stderr arguments,
users need more options like tail, since, time period etc.

Change-Id: I150e9c1bd8e4099d575624b1e0cbed7b00f63c35
Closes-Bug: #1667182

zunclient/osc/v1/containers.py

@@ -407,14 +407,36 @@ class LogsContainer(command.Command):
             '--stderr',
             action='store_true',
             help='Only stderr logs of container.')
+        parser.add_argument(
+            '--since',
+            metavar='<since>',
+            default=None,
+            help='Show logs since a given datetime or integer '
+                 'epoch (in seconds).')
+        parser.add_argument(
+            '--timestamps',
+            dest='timestamps',
+            action='store_true',
+            default=False,
+            help='Show timestamps.')
+        parser.add_argument(
+            '--tail',
+            metavar='<tail>',
+            default='all',
+            help='Number of lines to show from the end of the logs.')
         return parser
 
     def take_action(self, parsed_args):
         client = _get_client(self, parsed_args)
-        container = parsed_args.container
-        stdout = parsed_args.stdout
-        stderr = parsed_args.stderr
-        logs = client.containers.logs(container, stdout, stderr)
+        opts = {}
+        opts['id'] = parsed_args.container
+        opts['stdout'] = parsed_args.stdout
+        opts['stderr'] = parsed_args.stderr
+        opts['since'] = parsed_args.since
+        opts['timestamps'] = parsed_args.timestamps
+        opts['tail'] = parsed_args.tail
+        opts = zun_utils._remove_null_parms(**opts)
+        logs = client.containers.logs(**opts)
         print(logs)
 
 

zunclient/tests/unit/v1/test_containers.py

@@ -176,7 +176,9 @@ fake_responses = {
         ),
     },
     '/v1/containers/%s/logs?%s'
-    % (CONTAINER1['id'], parse.urlencode({'stdout': True, 'stderr': True})):
+    % (CONTAINER1['id'], parse.urlencode({'stdout': True, 'stderr': True,
+                                          'timestamps': False, 'tail': 'all',
+                                          'since': None})):
     {
         'GET': (
             {},
@@ -423,11 +425,15 @@ class ContainerManagerTest(testtools.TestCase):
         self.assertTrue(containers)
 
     def test_containers_logs(self):
-        containers = self.mgr.logs(CONTAINER1['id'], stdout=True, stderr=True)
+        containers = self.mgr.logs(CONTAINER1['id'], stdout=True, stderr=True,
+                                   timestamps=False, tail='all', since=None)
         expect = [
             ('GET', '/v1/containers/%s/logs?%s'
              % (CONTAINER1['id'], parse.urlencode({'stdout': True,
-                                                   'stderr': True})),
+                                                   'stderr': True,
+                                                   'timestamps': False,
+                                                   'tail': 'all',
+                                                   'since': None})),
              {'Content-Length': '0'}, None)
         ]
         self.assertEqual(expect, self.api.calls)

zunclient/v1/containers.py

@@ -134,13 +134,12 @@ class ContainerManager(base.Manager):
     def unpause(self, id):
         return self._action(id, '/unpause')
 
-    def logs(self, id, stdout, stderr):
-        if stdout is False and stderr is False:
-            stdout = True
-            stderr = True
+    def logs(self, id, **kwargs):
+        if kwargs['stdout'] is False and kwargs['stderr'] is False:
+            kwargs['stdout'] = True
+            kwargs['stderr'] = True
         return self._action(id, '/logs', method='GET',
-                            qparams={'stdout': stdout,
-                                     'stderr': stderr})[1]
+                            qparams=kwargs)[1]
 
     def execute(self, id, command):
         return self._action(id, '/execute',

zunclient/v1/containers_shell.py

@@ -316,9 +316,31 @@ def do_unpause(cs, args):
 @utils.arg('--stderr',
            action='store_true',
            help='Only stderr logs of container.')
+@utils.arg('--since',
+           metavar='<since>',
+           default=None,
+           help='Show logs since a given datetime or integer '
+                'epoch (in seconds).')
+@utils.arg('-t', '--timestamps',
+           dest='timestamps',
+           action='store_true',
+           default=False,
+           help='Show timestamps.')
+@utils.arg('--tail',
+           metavar='<tail>',
+           default='all',
+           help='Number of lines to show from the end of the logs.')
 def do_logs(cs, args):
     """Get logs of a container."""
-    logs = cs.containers.logs(args.container, args.stdout, args.stderr)
+    opts = {}
+    opts['id'] = args.container
+    opts['stdout'] = args.stdout
+    opts['stderr'] = args.stderr
+    opts['since'] = args.since
+    opts['timestamps'] = args.timestamps
+    opts['tail'] = args.tail
+    opts = zun_utils._remove_null_parms(**opts)
+    logs = cs.containers.logs(**opts)
     print(logs)