Don't assume Ironic is installed

During "overcloud node provision", pre-provisioned nodes can be
specified with managed:false, in which case the node provision is just a
data transformation process to prepare the inputs for Heat. The ansible
modules should not assume that Ironic is installed in this case, as the
enable_ironic option has existed for many releases already.

Signed-off-by: James Slagle <jslagle@redhat.com>
Depends-On: I3657169a3b519869f7f3594c8c6a6072a058e0c8
Change-Id: I2bc8f3d8090b2753f636832600d3bd51424ba7e7

tripleo_ansible/ansible_plugins/module_utils/baremetal_deploy.py

@@ -406,11 +406,18 @@ def check_existing(instances, provisioner, baremetal):
     found = []
     unmanaged = []
     for request in instances:
+
+        ident = request.get('name', request['hostname'])
+
         if not request.get('managed', True):
             unmanaged.append(request)
             continue
-
-        ident = request.get('name', request['hostname'])
+        elif not baremetal:
+            message = ('Instance %s is not specified as pre-provisioned '
+                       '(managed: False), and no connection to '
+                       'the baremetal service was provided.'
+                       % ident)
+            raise BaremetalDeployException(message)
 
         try:
             instance = provisioner.show_instance(ident)

tripleo_ansible/ansible_plugins/modules/tripleo_baremetal_check_existing.py

@@ -21,6 +21,7 @@ from ansible.module_utils.openstack import openstack_cloud_from_module
 from ansible.module_utils.openstack import openstack_full_argument_spec
 from ansible.module_utils.openstack import openstack_module_kwargs
 
+import keystoneauth1
 import metalsmith
 
 import yaml
@@ -114,12 +115,19 @@ def main():
     provisioner = metalsmith.Provisioner(cloud_region=cloud.config)
 
     try:
+        msg = ''
+
+        try:
+            baremetal = cloud.baremetal
+        except keystoneauth1.exceptions.catalog.EndpointNotFound as exc:
+            msg += str(exc)
+            baremetal = None
+
         found, not_found, pre_provisioned = bd.check_existing(
             instances=module.params['instances'],
             provisioner=provisioner,
-            baremetal=cloud.baremetal
+            baremetal=baremetal
         )
-        msg = ''
         if found:
             msg += ('Found existing instances: %s. '
                     % ', '.join([i.uuid for i in found]))

tripleo_ansible/tests/plugins/module_utils/test_baremetal_deploy.py

@@ -1109,6 +1109,19 @@ class TestCheckExistingInstances(base.TestCase):
         self.assertIn("hostname host1 was not found", str(exc))
         pr.show_instance.assert_called_once_with('host1')
 
+    def test_check_existing_no_ironic(self):
+        pr = mock.Mock()
+        instances = [
+            {'hostname': 'host1',
+             'image': {'href': 'overcloud-full'}},
+        ]
+        exc = self.assertRaises(
+            bd.BaremetalDeployException, bd.check_existing,
+            instances, pr, None)
+
+        self.assertIn(
+            "Instance host1 is not specified as pre-provisioned", str(exc))
+
     def test_unexpected_error(self):
         pr = mock.Mock()
         instances = [