Add app name|uuid argument to "solum app logs"

The app logs command was listing every log for
every app; this patch adds an app argument to
filter by app.

Change-Id: Ia5429bd7680df8f5832c68eca1057db7ffe75a55
Closes-Bug: #1444043

solumclient/solum.py

@@ -612,11 +612,19 @@ Available commands:
         self._print_list(plans, fields)
 
     def logs(self):
+        """Print a list of all logs belonging to a single app."""
+        self.parser.add_argument('app',
+                                 help="Application name")
+        self.parser._names['app'] = 'application'
+        args = self.parser.parse_args()
         assemblies = self.client.assemblies.list()
 
         all_logs_list = []
         fields = ["resource_uuid", "created_at"]
         for a in assemblies:
+            plan_uuid = a.plan_uri.split('/')[-1]
+            if args.app not in [plan_uuid, a.name]:
+                continue
             loglist = cli_assem.AssemblyManager(self.client).logs(
                 assembly_id=str(a.uuid))
 

solumclient/tests/test_solum.py

@@ -337,6 +337,11 @@ class TestSolum(base.TestCase):
             out = self.shell("app create --plan-file /dev/null")
             self.assertEqual("ERROR: Artifact content missing\n", out)
 
+    def test_app_logs_need_an_identifier(self):
+        self.make_env()
+        out = self.shell("app logs")
+        self.assertEqual("ERROR: You must specify an application.\n", out)
+
     # Plan Tests #
     @mock.patch.object(plan.PlanManager, "create")
     def test_plan_create(self, mock_plan_create):