Make device alias resolution optional

When compiling an effective site design, make
the step for resolving device aliases optional
as only a few tasks need this information but it
takes a large amount of the time.

Change-Id: I9f1090de0ec26887217be80567367547306b3905

drydock_provisioner/drivers/node/maasdriver/actions/node.py

@@ -1281,7 +1281,7 @@ class ApplyNodeNetworking(BaseMaasAction):
         self.task.save()
 
         try:
-            site_design = self._load_site_design()
+            site_design = self._load_site_design(resolve_aliases=True)
         except errors.OrchestratorError:
             self.task.add_status_msg(
                 msg="Error loading site design.",
@@ -1819,7 +1819,7 @@ class ApplyNodeStorage(BaseMaasAction):
         self.task.save()
 
         try:
-            site_design = self._load_site_design()
+            site_design = self._load_site_design(resolve_aliases=True)
         except errors.OrchestratorError:
             self.task.add_status_msg(
                 msg="Error loading site design.",

drydock_provisioner/objects/node.py

@@ -49,7 +49,7 @@ class BaremetalNode(drydock_provisioner.objects.hostprofile.HostProfile):
 
     # Compile the applied version of this model sourcing referenced
     # data from the passed site design
-    def compile_applied_model(self, site_design, state_manager):
+    def compile_applied_model(self, site_design, state_manager, resolve_aliases=False):
         self.logger.debug("Applying host profile to node %s" % self.name)
         self.apply_host_profile(site_design)
         self.logger.debug("Applying hardware profile to node %s" % self.name)
@@ -57,8 +57,9 @@ class BaremetalNode(drydock_provisioner.objects.hostprofile.HostProfile):
         self.source = hd_fields.ModelSource.Compiled
         self.logger.debug("Resolving kernel parameters on node %s" % self.name)
         self.resolve_kernel_params(site_design)
-        self.logger.debug("Resolving device aliases on node %s" % self.name)
-        self.apply_logicalnames(site_design, state_manager)
+        if resolve_aliases:
+            self.logger.debug("Resolving device aliases on node %s" % self.name)
+            self.apply_logicalnames(site_design, state_manager)
         return
 
     def apply_host_profile(self, site_design):

drydock_provisioner/orchestrator/actions/orchestrator.py

@@ -131,15 +131,18 @@ class BaseAction(object):
         self.task.align_result()
         return
 
-    def _load_site_design(self):
+    def _load_site_design(self, resolve_aliases=False):
         """Load the site design from this action's task.
 
         The design_ref in the task can be resolved to a set of design documents
         that reflect the site design to be operated on. Load this design for use
         by this action.
+
+        :param resolve_aliases: boolean on whether to resolve device aliases, defaults
+                                to False
         """
         design_status, site_design = self.orchestrator.get_effective_site(
-            self.task.design_ref)
+            self.task.design_ref, resolve_aliases=resolve_aliases)
 
         if design_status is None or design_status.status == hd_fields.ActionResult.Failure:
             raise errors.OrchestratorError("Site design failed load.")

drydock_provisioner/orchestrator/orchestrator.py

@@ -241,7 +241,7 @@ class Orchestrator(object):
 
         return new_task
 
-    def compute_model_inheritance(self, site_design):
+    def compute_model_inheritance(self, site_design, resolve_aliases=False):
         """Compute inheritance of the design model.
 
         Given a fully populated Site model, compute the effective
@@ -254,7 +254,9 @@ class Orchestrator(object):
             for n in nodes or []:
                 try:
                     n.compile_applied_model(
-                        site_design, state_manager=self.state_manager)
+                        site_design,
+                        state_manager=self.state_manager,
+                        resolve_aliases=resolve_aliases)
                 except Exception as ex:
                     node_failed.append(n)
                     self.logger.error(
@@ -283,7 +285,7 @@ class Orchestrator(object):
 
         return status, site_design
 
-    def get_effective_site(self, design_ref):
+    def get_effective_site(self, design_ref, resolve_aliases=False):
         """Ingest design data and compile the effective model of the design.
 
         Return a tuple of the processing status and the populated instance
@@ -297,7 +299,7 @@ class Orchestrator(object):
         try:
             status, site_design = self.get_described_site(design_ref)
             if status.status == hd_fields.ValidationResult.Success:
-                self.compute_model_inheritance(site_design)
+                self.compute_model_inheritance(site_design, resolve_aliases=resolve_aliases)
                 self.compute_bootaction_targets(site_design)
                 self.render_route_domains(site_design)
                 status = val.validate_design(site_design, result_status=status)

tests/unit/test_node_logicalnames.py

@@ -140,10 +140,9 @@ class TestClass(object):
         drydock_state.get_build_data = Mock(side_effect=side_effect)
 
         design_status, design_data = deckhand_orchestrator.get_effective_site(
-            design_ref)
+            design_ref, resolve_aliases=True)
 
         nodes = design_data.baremetal_nodes
-        nodes[0].apply_logicalnames(design_data, state_manager=drydock_state)
 
         expected = {
             'primary_boot': 'sda',