Improve error logging during validation

- Currently several failure paths won't log any messages
  when doing a site validation. Add these messages

- Also, for validation steps that are dependent on external resources
  make the resource inaccessibility a warning rather than a failure.

Change-Id: I431ed188e2f6cd3fc3fa41ae2729f3a099fdfbf5

python/drydock_provisioner/orchestrator/orchestrator.py

@@ -259,8 +259,6 @@ class Orchestrator(object):
         Given a fully populated Site model, compute the effective
         design by applying inheritance and references
         """
-        node_failed = []
-
         try:
             nodes = site_design.baremetal_nodes
             for n in nodes or []:
@@ -270,13 +268,9 @@ class Orchestrator(object):
                         state_manager=self.state_manager,
                         resolve_aliases=resolve_aliases)
                 except Exception as ex:
-                    node_failed.append(n)
                     self.logger.debug(
                         "Failed to build applied model for node %s.", n.name, exc_info=ex)
-            if node_failed:
-                raise errors.DesignError(
-                    "Failed to build applied model for %s" % ",".join(
-                        [x.name for x in node_failed]))
+                    raise ex
         except AttributeError:
             self.logger.debug(
                 "Model inheritance skipped, no node definitions in site design."
@@ -653,8 +647,8 @@ class Orchestrator(object):
             for n in site_design.networks:
                 if n.routedomain is not None:
                     if n.routedomain not in routedomains:
-                        self.logger.info("Adding routedomain %s to render map."
-                                         % n.routedomain)
+                        self.logger.debug("Adding routedomain %s to render map."
+                                          % n.routedomain)
                         routedomains[n.routedomain] = list()
                     routedomains[n.routedomain].append(n)
             for rd, nl in routedomains.items():

python/drydock_provisioner/orchestrator/validations/platform_selection.py

@@ -36,12 +36,30 @@ class PlatformSelection(Validators):
             )
             return
 
-        valid_images = node_driver.get_available_images()
+        try:
+            valid_images = node_driver.get_available_images()
+        except Exception:
+            msg = ("Platform validation: Could not load images from driver, skipping"
+                   "image and kernel selection validation.")
+            self.report_warn(
+                msg, [],
+                "Cannot validate platform selection without accessing the node provisioner."
+            )
+            return
 
         valid_kernels = dict()
 
         for i in valid_images:
-            valid_kernels[i] = node_driver.get_available_kernels(i)
+            try:
+                valid_kernels[i] = node_driver.get_available_kernels(i)
+            except Exception:
+                msg = ("Platform validation: Could not load kernels from driver, skipping"
+                       "image and kernel selection validation.")
+                self.report_warn(
+                    msg, [],
+                    "Cannot validate platform selection without accessing the node provisioner."
+                )
+                return
 
         node_list = site_design.baremetal_nodes or []
 

python/drydock_provisioner/orchestrator/validations/validators.py

@@ -13,15 +13,24 @@
 # limitations under the License.
 """Business Logic Validation"""
 
+import logging
+
 from drydock_provisioner import objects
 from drydock_provisioner.objects import fields as hd_fields
 
+import drydock_provisioner.config as config
 
 class Validators:
     def __init__(self, long_name, name):
         self.name = name
         self.long_name = long_name
         self.reset_message_list()
+        try:
+            logger_name = config.config_mgr.conf.logging.global_logger_name
+        except Exception:
+            logger_name = "drydock"
+
+        self.logger = logging.getLogger(logger_name)
 
     def report_msg(self, msg, docs, diagnostic, error, level):
         """Add a validation message to the result list.
@@ -43,14 +52,17 @@ class Validators:
         self.messages.append(msg_obj)
 
     def report_error(self, msg, docs, diagnostic):
+        self.logger.info("Design Validation Error: %s", msg)
         self.report_msg(msg, docs, diagnostic, True,
                         hd_fields.MessageLevels.ERROR)
 
     def report_warn(self, msg, docs, diagnostic):
+        self.logger.info("Design Validation Error: %s", msg)
         self.report_msg(msg, docs, diagnostic, False,
                         hd_fields.MessageLevels.WARN)
 
     def report_info(self, msg, docs, diagnostic):
+        self.logger.debug("Design Validation Info: %s", msg)
         self.report_msg(msg, docs, diagnostic, False,
                         hd_fields.MessageLevels.INFO)