Merge "Catch missing 404 exceptions in client"

ceilometerclient/common/base.py

@@ -21,6 +21,7 @@ import copy
 
 from ceilometerclient import exc
 from ceilometerclient.openstack.common.apiclient import base
+from ceilometerclient.openstack.common.apiclient import exceptions
 
 # Python 2.4 compat
 try:
@@ -65,7 +66,10 @@ class Manager(object):
 
     def _list(self, url, response_key=None, obj_class=None, body=None,
               expect_single=False):
-        resp = self.api.get(url)
+        try:
+            resp = self.api.get(url)
+        except exceptions.NotFound:
+            raise exc.HTTPNotFound
         if not resp.content:
             raise exc.HTTPNotFound
         body = resp.json()

ceilometerclient/tests/unit/v2/test_shell.py

@@ -511,7 +511,7 @@ class ShellSampleShowCommandTest(utils.BaseTestCase):
 
     @mock.patch('sys.stdout', new=six.StringIO())
     def test_sample_show_raises_command_err(self):
-        self.cc.new_samples.get.return_value = None
+        self.cc.new_samples.get.side_effect = exc.HTTPNotFound
 
         self.assertRaises(exc.CommandError, ceilometer_shell.do_sample_show,
                           self.cc, self.args)

ceilometerclient/v2/shell.py

@@ -170,9 +170,9 @@ def _do_sample_list(cc, args):
            help='ID (aka message ID) of the sample to show.')
 def do_sample_show(cc, args):
     '''Show an sample.'''
-    sample = cc.new_samples.get(args.sample_id)
-
-    if sample is None:
+    try:
+        sample = cc.new_samples.get(args.sample_id)
+    except exc.HTTPNotFound:
         raise exc.CommandError('Sample not found: %s' % args.sample_id)
 
     fields = ['id', 'meter', 'volume', 'type', 'unit', 'source',
@@ -405,6 +405,8 @@ def _display_alarm(alarm):
 def do_alarm_show(cc, args={}):
     """Show an alarm."""
     alarm = cc.alarms.get(args.alarm_id)
+    # alarm.get actually catches the HTTPNotFound exception and turns the
+    # result into None if the alarm wasn't found.
     if alarm is None:
         raise exc.CommandError('Alarm not found: %s' % args.alarm_id)
     else:
@@ -1046,7 +1048,11 @@ def do_event_list(cc, args={}):
            help='The ID of the event. Should be a UUID.')
 def do_event_show(cc, args={}):
     """Show a particular event."""
-    event = cc.events.get(args.message_id)
+    try:
+        event = cc.events.get(args.message_id)
+    except exc.HTTPNotFound:
+        raise exc.CommandError('Event not found: %s' % args.message_id)
+
     fields = ['event_type', 'generated', 'traits', 'raw']
     data = dict([(f, getattr(event, f, '')) for f in fields])
     utils.print_dict(data, wrap=72)