[WIP] Add tool to list cloud nodes processes

Change-Id: I6e482fc7d74f80d4045416e6730ef606f5ae1c1a

tobiko/openstack/topology/__init__.py

@@ -17,6 +17,7 @@ from tobiko.openstack.topology import _assert
 from tobiko.openstack.topology import _exception
 from tobiko.openstack.topology import _neutron
 from tobiko.openstack.topology import _topology
+from tobiko.openstack.topology import _sh
 
 assert_reachable_nodes = _assert.assert_reachable_nodes
 assert_unreachable_nodes = _assert.assert_unreachable_nodes
@@ -24,6 +25,8 @@ assert_unreachable_nodes = _assert.assert_unreachable_nodes
 NoSuchOpenStackTopologyNodeGroup = _exception.NoSuchOpenStackTopologyNodeGroup
 NoSuchOpenStackTopologyNode = _exception.NoSuchOpenStackTopologyNode
 
+list_hosts_processes = _sh.list_hosts_processes
+
 UnknowOpenStackContainerNameError = _topology.UnknowOpenStackContainerNameError
 UnknowOpenStackServiceNameError = _topology.UnknowOpenStackServiceNameError
 get_agent_service_name = _topology.get_agent_service_name

tobiko/openstack/topology/_sh.py

@@ -0,0 +1,22 @@
+
+
+import typing
+
+import tobiko
+from tobiko.openstack.topology import _topology
+from tobiko.shell import sh
+
+
+def list_hosts_processes(hostnames: typing.Iterable[str],
+                         command: str,
+                         command_line: str,
+                         **list_processes_params) \
+        -> tobiko.Selection[sh.PsProcess]:
+    processes = tobiko.Selection[sh.PsProcess]()
+    for hostname in sorted(frozenset(hostnames)):
+        node = _topology.get_openstack_node(hostname=hostname)
+        processes += sh.list_processes(command=command,
+                                       command_line=command_line,
+                                       ssh_client=node.ssh_client,
+                                       **list_processes_params)
+    return processes

tobiko/tests/functional/openstack/test_topology.py

@@ -43,7 +43,7 @@ class OpenStackTopologyTest(testtools.TestCase):
     def test_ssh_client(self):
         for node in self.topology.nodes:
             self.assertIsNotNone(node.ssh_client)
-            hostname = sh.get_hostname(
+            hostname = sh.ssh_hostname(
                 ssh_client=node.ssh_client).split('.')[0]
             self.assertEqual(node.name, hostname)