made empty deployments go to deployed state upon release.

CHANGELOG.md

@@ -1,6 +1,6 @@
 v 2018.4 (2018-12-xx)
 Changes in this release:
-- Various bugfixes and performance enhancements (#873, #772, #958, #959)
+- Various bugfixes and performance enhancements (#873, #772, #958, #959, #955)
 - Dependency updates
 - Minimal python version is now python 3.6
 - Removal of snapshot and restore functionality from the server (#789)

src/inmanta/data.py

@@ -1621,6 +1621,16 @@ def get_skipped_for_undeployable(self):
                                                       {"$set": {"skipped_for_undeployable": self.skipped_for_undeployable}})
         return self.skipped_for_undeployable
 
+    @gen.coroutine
+    def mark_done(self):
+        """ mark this deploy as done """
+        result = const.VersionState.success
+        for state in self.status.values():
+            if state["status"] != "deployed":
+                result = const.VersionState.failed
+
+        yield self.update_fields(deployed=True, result=result)
+
     @gen.coroutine
     def get_increment(self, negative: bool=False):
         """

src/inmanta/server/server.py

@@ -969,6 +969,10 @@ def release_version(self, env, version_id, push, agent_trigger_method=None):
 
         yield model.update_fields(released=True, result=const.VersionState.deploying)
 
+        if model.total == 0:
+            yield model.mark_done()
+            return 200, {"model": model}
+
         # Already mark undeployable resources as deployed to create a better UX (change the version counters)
         undep = yield model.get_undeployable()
         undep = [rid + ",v=%s" % version_id for rid in undep]
@@ -1274,12 +1278,7 @@ def resource_action_update(self, env, resource_ids, action_id, action, started,
             model = yield data.ConfigurationModel.get_version(env.id, model_version)
 
             if model.done == model.total:
-                result = const.VersionState.success
-                for state in model.status.values():
-                    if state["status"] != "deployed":
-                        result = const.VersionState.failed
-
-                yield model.update_fields(deployed=True, result=result)
+                yield model.mark_done()
 
             waiting_agents = set([(Id.parse_id(prov).get_agent_name(), res.resource_version_id)
                                   for res in resources for prov in res.provides])

tests/test_server_agent.py

@@ -46,6 +46,20 @@
 
 logger = logging.getLogger("inmanta.test.server_agent")
 
+
+async def get_agent(server, environment, *endpoints, hostname="nodes1"):
+    agentmanager = server.get_slice(SLICE_AGENT_MANAGER)
+    agent = Agent(
+        hostname=hostname,
+        environment=environment,
+        agent_map={agent: "localhost" for agent in endpoints},
+        code_loader=False)
+    for agentname in endpoints:
+        agent.add_end_point_name(agentname)
+    await agent.start()
+    await retry_limited(lambda: len(agentmanager.sessions) == 1, 10)
+    return agent
+
 ResourceContainer = namedtuple('ResourceContainer', ['Provider', 'waiter',
                                                      'wait_for_done_with_waiters',
                                                      'wait_for_condition_with_waiters'])
@@ -637,6 +651,37 @@ async def test_dryrun_and_deploy(server_multi, client_multi, resource_container)
     await agent.stop()
 
 
+@pytest.mark.asyncio(timeout=150)
+async def test_deploy_empty(server, client, resource_container, environment):
+    """
+       Test deployment of empty model
+    """
+    agent = await get_agent(server, environment, "agent1")
+
+    version = int(time.time())
+
+    resources = []
+
+    result = await client.put_version(
+        tid=environment,
+        version=version,
+        resources=resources,
+        resource_state={},
+        unknowns=[],
+        version_info={})
+    assert result.code == 200
+
+    # do a deploy
+    result = await client.release_version(environment, version, True, const.AgentTriggerMethod.push_full_deploy)
+    assert result.code == 200
+    assert result.result["model"]["deployed"]
+    assert result.result["model"]["released"]
+    assert result.result["model"]["total"] == 0
+    assert result.result["model"]["result"] == const.VersionState.success.name
+
+    await agent.stop()
+
+
 @pytest.mark.asyncio(timeout=100)
 async def test_deploy_with_undefined(server_multi, client_multi, resource_container):
     """