Add exceptions hierarchy

nailgun.errors have a huge set of exceptions but without hierarchy. This
patch remove exception generation from dict and make it explicitly with
python classes and add some exceptions hierarchy. Now all network errors
inherit from NetworkException and same for other exceptions.

Change-Id: I9a2c6b358ea02a16711da74562308664ad7aed97
Closes-bug: #1566195

nailgun/nailgun/api/v1/handlers/base.py

@@ -29,7 +29,7 @@ from nailgun.api.v1.validators.orchestrator_graph import \
     GraphSolverTasksValidator
 from nailgun import consts
 from nailgun.db import db
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun import objects
 from nailgun.objects.serializers.base import BasicSerializer

nailgun/nailgun/api/v1/handlers/cluster.py

@@ -38,7 +38,7 @@ from nailgun.api.v1.validators.cluster import ClusterStopDeploymentValidator
 from nailgun.api.v1.validators.cluster import ClusterValidator
 from nailgun.api.v1.validators.cluster import VmwareAttributesValidator
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun import objects
 from nailgun import utils

nailgun/nailgun/api/v1/handlers/cluster_plugin_link.py

@@ -17,7 +17,7 @@
 from nailgun.api.v1.handlers import base
 from nailgun.api.v1.handlers.base import content
 from nailgun.api.v1.validators import plugin_link
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 

nailgun/nailgun/api/v1/handlers/network_configuration.py

@@ -36,7 +36,7 @@ from nailgun.api.v1.validators.network \
 from nailgun import consts
 from nailgun import objects
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun.task.manager import CheckNetworksTaskManager
 from nailgun.task.manager import UpdateDnsmasqTaskManager

nailgun/nailgun/api/v1/handlers/node.py

@@ -30,7 +30,7 @@ from nailgun.api.v1.validators.network import NetAssignmentValidator
 from nailgun.api.v1.validators import node as node_validators
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 from nailgun.extensions.network_manager.objects.serializers.nic import \

nailgun/nailgun/api/v1/handlers/node_group.py

@@ -29,7 +29,7 @@ from nailgun.api.v1.validators.node_group import NodeGroupValidator
 from nailgun import consts
 from nailgun.db import db
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.task.manager import UpdateDnsmasqTaskManager
 

nailgun/nailgun/api/v1/handlers/openstack_config.py

@@ -21,7 +21,7 @@ from nailgun.api.v1.handlers.base import BaseHandler
 from nailgun.api.v1.handlers.base import content
 from nailgun.api.v1.handlers.base import SingleHandler
 from nailgun.api.v1.validators.openstack_config import OpenstackConfigValidator
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun import objects
 from nailgun.task.manager import OpenstackConfigTaskManager

nailgun/nailgun/api/v1/handlers/orchestrator.py

@@ -30,7 +30,7 @@ from nailgun.api.v1.validators.orchestrator_graph import \
 
 from nailgun.logger import logger
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 from nailgun.orchestrator import deployment_serializers

nailgun/nailgun/api/v1/handlers/plugin.py

@@ -23,7 +23,7 @@ from nailgun.api.v1.handlers.deployment_graph import \
 from nailgun.api.v1.handlers.deployment_graph import \
     RelatedDeploymentGraphHandler
 from nailgun.api.v1.validators import plugin
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.plugins.manager import PluginManager
 

nailgun/nailgun/api/v1/handlers/plugin_link.py

@@ -17,7 +17,7 @@
 from nailgun.api.v1.handlers import base
 from nailgun.api.v1.handlers.base import content
 from nailgun.api.v1.validators import plugin_link
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 

nailgun/nailgun/api/v1/handlers/role.py

@@ -19,7 +19,7 @@ import six
 from nailgun.api.v1.handlers import base
 from nailgun.api.v1.handlers.base import content
 from nailgun.api.v1.validators.role import RoleValidator
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.objects.serializers.role import RoleSerializer
 

nailgun/nailgun/api/v1/handlers/tasks.py

@@ -21,7 +21,8 @@ from nailgun.api.v1.handlers.base import SingleHandler
 from nailgun.api.v1.handlers.base import content
 from nailgun.api.v1.validators.task import TaskValidator
 
-from nailgun.errors import errors
+from nailgun import errors
+
 from nailgun import objects
 from nailgun import utils
 

nailgun/nailgun/api/v1/validators/assignment.py

@@ -22,7 +22,7 @@ from nailgun.api.v1.validators.json_schema.assignment \
     import unassignment_format_schema
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import Node
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.expression import Expression
 from nailgun import objects
 

nailgun/nailgun/api/v1/validators/base.py

@@ -21,7 +21,7 @@ from oslo_serialization import jsonutils
 import six
 
 from nailgun.api.v1.validators.json_schema import base_types
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.utils import restrictions
 
@@ -39,7 +39,7 @@ class BasicValidator(object):
             try:
                 res = jsonutils.loads(data)
             except Exception:
-                raise errors.InvalidData(
+                raise errors.JsonDecodeError(
                     "Invalid json received",
                     log_message=True
                 )
@@ -65,7 +65,7 @@ class BasicValidator(object):
             jsonschema.validate(json_req, use_schema)
         except exceptions.ValidationError as exc:
             if len(exc.path) > 0:
-                raise errors.InvalidData(
+                raise errors.JsonValidationError(
                     # NOTE(ikutukov): here was a exc.path.pop(). It was buggy
                     # because JSONSchema error path could contain integers
                     # and joining integers as string is not a good idea in
@@ -73,7 +73,7 @@ class BasicValidator(object):
                     # properly and give 500 error code except 400.
                     ": ".join([six.text_type(exc.path), exc.message])
                 )
-            raise errors.InvalidData(exc.message)
+            raise errors.JsonValidationError(exc.message)
 
     @classmethod
     def validate_response(cls, resp, resource_type,
@@ -195,13 +195,14 @@ class BasicAttributesValidator(BasicValidator):
 
         try:
             cls.validate_schema(attr, schema)
-        except errors.InvalidData as e:
-            raise errors.InvalidData('[{0}] {1}'.format(attr_name, e.message))
+        except errors.JsonValidationError as e:
+            raise errors.JsonValidationError(
+                '[{0}] {1}'.format(attr_name, e.message))
 
         # Validate regexp only if some value is present
         # Otherwise regexp might be invalid
         if attr['value']:
             regex_err = restrictions.AttributesRestriction.validate_regex(attr)
             if regex_err is not None:
-                raise errors.InvalidData(
+                raise errors.JsonValidationError(
                     '[{0}] {1}'.format(attr_name, regex_err))

nailgun/nailgun/api/v1/validators/cluster.py

@@ -25,7 +25,7 @@ from nailgun.api.v1.validators.node import ProvisionSelectedNodesValidator
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import Node
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.plugins.manager import PluginManager
 

nailgun/nailgun/api/v1/validators/ip_addr.py

@@ -20,7 +20,7 @@ from oslo_serialization import jsonutils
 from nailgun.api.v1.validators.base import BasicValidator
 from nailgun.api.v1.validators.json_schema import ip_addr
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 

nailgun/nailgun/api/v1/validators/network.py

@@ -29,7 +29,7 @@ from nailgun.db.sqlalchemy.models import IPAddrRange
 from nailgun.db.sqlalchemy.models import NetworkGroup
 from nailgun.db.sqlalchemy.models import Node
 from nailgun.db.sqlalchemy.models import NodeGroup
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun import utils
 

nailgun/nailgun/api/v1/validators/node.py

@@ -24,7 +24,7 @@ from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import Node
 from nailgun.db.sqlalchemy.models import NodeNICInterface
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun import utils
 

nailgun/nailgun/api/v1/validators/node_group.py

@@ -18,7 +18,7 @@ from distutils.version import StrictVersion
 from nailgun.api.v1.validators.base import BasicValidator
 from nailgun import consts
 from nailgun.db import db
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 from nailgun.api.v1.validators.json_schema import node_group

nailgun/nailgun/api/v1/validators/notification.py

@@ -17,7 +17,7 @@ from nailgun import consts
 from nailgun import objects
 
 from nailgun.api.v1.validators.base import BasicValidator
-from nailgun.errors import errors
+from nailgun import errors
 
 
 class NotificationValidator(BasicValidator):

nailgun/nailgun/api/v1/validators/openstack_config.py

@@ -18,7 +18,7 @@ from nailgun.api.v1.validators.base import BasicValidator
 from nailgun.api.v1.validators.json_schema import openstack_config as schema
 from nailgun import consts
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun import utils
 

nailgun/nailgun/api/v1/validators/orchestrator_graph.py

@@ -17,7 +17,7 @@ from nailgun.api.v1.validators.base import BasicValidator
 from nailgun.api.v1.validators.json_schema import base_types
 from nailgun.api.v1.validators.json_schema import tasks
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.orchestrator import orchestrator_graph
 

nailgun/nailgun/api/v1/validators/plugin.py

@@ -16,7 +16,7 @@
 
 from nailgun.api.v1.validators.base import BasicValidator
 from nailgun.api.v1.validators.json_schema import plugin
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.objects import ClusterPlugins
 from nailgun.objects import Plugin
 

nailgun/nailgun/api/v1/validators/release.py

@@ -21,7 +21,7 @@ from nailgun.api.v1.validators.json_schema import release
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 
 
 class ReleaseValidator(BasicValidator):

nailgun/nailgun/api/v1/validators/role.py

@@ -19,7 +19,7 @@ from nailgun.api.v1.validators.base import BasicValidator
 from nailgun.api.v1.validators.json_schema import role
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 
 
 class RoleValidator(BasicValidator):

nailgun/nailgun/api/v1/validators/task.py

@@ -16,7 +16,7 @@
 from nailgun import consts
 
 from nailgun.api.v1.validators.base import BasicValidator
-from nailgun.errors import errors
+from nailgun import errors
 
 
 class TaskValidator(BasicValidator):

nailgun/nailgun/errors/__init__.py

@@ -14,133 +14,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import six
+from .base import NailgunException
 
-from nailgun.errors.base import NailgunException
-
-default_messages = {
-    # common errors
-    "InvalidData": "Invalid data received",
-    "AlreadyExists": "Object already exists",
-    "TaskAlreadyRunning": "Task is already running",
-
-    # REST errors
-    "CannotDelete": "Can't delete object",
-    "CannotCreate": "Can't create object",
-    "CannotUpdate": "Can't update object",
-    "NotAllowed": "Action is not allowed",
-    "InvalidField": "Invalid field specified for object",
-    "ObjectNotFound": "Object not found in DB",
-
-    # node discovering errors
-    "InvalidInterfacesInfo": "Invalid interfaces info",
-    "InvalidMetadata": "Invalid metadata specified for node",
-    "CannotFindNodeIDForDiscovering": "Cannot find node for discovering",
-
-    # deployment errors
-    "CheckBeforeDeploymentError": "Pre-Deployment check wasn't successful",
-    "DeploymentAlreadyStarted": "Deployment already started",
-    "DeploymentNotRunning": "Deployment is not running",
-    "NoDeploymentTasks": "Deployment tasks not found for specific release in the database",
-    "DeletionAlreadyStarted": "Environment removal already started",
-    "StopAlreadyRunning": "Stopping deployment already initiated",
-    "CannotBeStopped": "Stop action is forbidden for the cluster",
-    "FailedProvisioning": "Failed to start provisioning",
-    "WrongNodeStatus": "Wrong node status",
-    "NodeOffline": "Node is offline",
-    "NotEnoughControllers": "Not enough controllers",
-    "RedHatSetupError": "Red Hat setup error",
-    "TaskAlreadyRunning": "A task is already running",
-    "InvalidReleaseId": "Release Id is invalid",
-    "InvalidOperatingSystem": "Invalid operating system",
-    "CannotFindPluginForRelease": "Cannot find plugin for the release",
-    "UnavailableRelease": "Release is unavailable",
-    "ControllerInErrorState": ("One of the cluster controllers is in error "
-                               "state, please, eliminate the problem prior "
-                               "to proceeding further"),
-    "SerializerNotSupported": ("Serialization of the task is not supported "
-                               "because of unknown type"),
-
-    # mongo errors
-    "ExtMongoCheckerError": "Mongo nodes shouldn`t be used with external mongo",
-    "MongoNodesCheckError": "Mongo nodes have to be present if ceilometer is chosen",
-
-    # disk errors
-    "NotEnoughFreeSpace": "Not enough free space",
-    "NotEnoughOsdNodes": "Not enough OSD nodes",
-
-    # network errors
-    "AdminNetworkNotFound": "Admin network info not found",
-    "InvalidNetworkCidr": "Invalid network CIDR",
-    "InvalidNetworkVLANIDs": "Invalid network VLAN IDs",
-    "AssignIPError": "Failed to assign IP to node",
-    "NetworkCheckError": "Network checking failed",
-    "CantRemoveOldVerificationTask": "Can't remove old verification task, still running",
-    "OutOfVLANs": "Not enough available VLAN IDs",
-    "OutOfIPs": "Not enough free IP addresses in pool",
-    "NoSuitableCIDR": "Cannot find suitable CIDR",
-    "CanNotFindInterface": "Cannot find interface",
-    "CanNotDetermineEndPointIP": "Cannot determine end point IP",
-    "CanNotFindNetworkForNode": "Cannot find network for node",
-    "CanNotFindNetworkForNodeGroup": "Cannot find network for node group",
-    "CanNotFindCommonNodeGroup": "Node role doesn't have common node group",
-    "NetworkRoleConflict": "Cannot override existing network role",
-    "NetworkTemplateMissingRoles": "Roles are missing from network template",
-    "NetworkTemplateMissingNetRoles": "Network roles are missing",
-    "NetworkTemplateMissingNetworkGroup": "Network group is missing",
-    "NetworkTemplateCannotBeApplied": "Network template cannot be applied",
-    "DuplicatedVIPNames": ("Cannot assign VIPs for the cluster due to "
-                           "overlapping of names of the VIPs"),
-    "UpdateDnsmasqTaskIsRunning": ("update_dnsmasq task is not finished "
-                                   "after the previous configuration change. "
-                                   "Please try again after a few seconds."),
-    "NovaNetworkNotSupported": ("Nova network is not supported in current "
-                                "release"),
-
-    # RPC errors
-    "CannotFindTask": "Cannot find task",
-
-    # expression parser errors
-    "LexError": "Illegal character",
-    "ParseError": "Synxtax error",
-    "UnknownModel": "Unknown model",
-
-    # Tracking errors
-    "TrackingError": "Action failed",
-
-    # Zabbix errors
-    "CannotMakeZabbixRequest": "Can't make a request to Zabbix",
-    "ZabbixRequestError": "Zabbix request returned an error",
-
-    # Plugin errors
-    "PackageVersionIsNotCompatible": "Package version is not compatible",
-
-    # Extensions
-    "CannotFindExtension": "Cannot find extension",
-
-    # unknown
-    "UnknownError": "Unknown error",
-    "UnresolvableConflict": "Unresolvable conflict",
-    "NodeNotBelongToCluster": "The Node doesn't belong to the Cluster",
-    "TaskBaseDeploymentNotAllowed": "The task-based deployment is not allowed",
-    "NoChanges": "There is no changes to apply."
-}
-
-
-class ErrorFactory(object):
-
-    def __init__(self):
-        for name, msg in six.iteritems(default_messages):
-            setattr(self, name, self._build_exc(name, msg))
-
-    def _build_exc(self, name, msg):
-        return type(
-            name,
-            (NailgunException,),
-            {
-                "message": msg
-            }
-        )
-
-
-errors = ErrorFactory()
+from .api import *
+from .deployment import *
+from .disk import *
+from .extension import *
+from .mongodb import *
+from .network import *
+from .network_template import *
+from .node import *
+from .parses import *
+from .plugins import *
+from .rpc import *
+from .validation import *
+from .zabbix import *

nailgun/nailgun/errors/api.py

@@ -0,0 +1,41 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class ApiException(NailgunException):
+    """Base REST exception"""
+
+
+class CannotDelete(ApiException):
+    message = "Can't delete object"
+
+
+class CannotCreate(ApiException):
+    message = "Can't create object"
+
+
+class CannotUpdate(ApiException):
+    message = "Can't update object"
+
+
+class NotAllowed(ApiException):
+    message = "Action is not allowed"
+
+
+class ObjectNotFound(ApiException):
+    message = "Object not found in DB"

nailgun/nailgun/errors/base.py

@@ -13,10 +13,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import six
+
 from nailgun.logger import logger
 
 
+@six.python_2_unicode_compatible
 class NailgunException(Exception):
+    message = ""
 
     def __init__(self,
                  message="",
@@ -34,6 +38,3 @@ class NailgunException(Exception):
 
     def __str__(self):
         return self.message
-
-    def __unicode__(self):
-        return self.message

nailgun/nailgun/errors/deployment.py

@@ -0,0 +1,103 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class DeploymentException(NailgunException):
+    """Base deployment exception"""
+
+
+class CheckBeforeDeploymentError(DeploymentException):
+    message = "Pre-Deployment check wasn't successful"
+
+
+class DeploymentAlreadyStarted(DeploymentException):
+    message = "Deployment already started"
+
+
+class DeploymentNotRunning(DeploymentException):
+    message = "Deployment is not running"
+
+
+class NoDeploymentTasks(DeploymentException):
+    message = "Deployment tasks not found for specific release in the database"
+
+
+class DeletionAlreadyStarted(DeploymentException):
+    message = "Environment removal already started"
+
+
+class StopAlreadyRunning(DeploymentException):
+    message = "Stopping deployment already initiated"
+
+
+class CannotBeStopped(DeploymentException):
+    message = "Stop action is forbidden for the cluster"
+
+
+class WrongNodeStatus(DeploymentException):
+    message = "Wrong node status"
+
+
+class NodeOffline(DeploymentException):
+    message = "Node is offline"
+
+
+class NotEnoughControllers(DeploymentException):
+    message = "Not enough controllers"
+
+
+class RedHatSetupError(DeploymentException):
+    message = "Red Hat setup error"
+
+
+class TaskAlreadyRunning(DeploymentException):
+    message = "A task is already running"
+
+
+class InvalidReleaseId(DeploymentException):
+    message = "Release Id is invalid"
+
+
+class InvalidOperatingSystem(DeploymentException):
+    message = "Invalid operating system"
+
+
+class CannotFindPluginForRelease(DeploymentException):
+    message = "Cannot find plugin for the release"
+
+
+class UnavailableRelease(DeploymentException):
+    message = "Release is unavailable"
+
+
+class ControllerInErrorState(DeploymentException):
+    message = ("One of the cluster controllers is in error state,"
+               " please, eliminate the problem prior to proceeding further")
+
+
+class SerializerNotSupported(DeploymentException):
+    message = ("Serialization of the task is not supported because of"
+               " unknown type")
+
+
+class TaskBaseDeploymentNotAllowed(DeploymentException):
+    message = "The task-based deployment is not allowed"
+
+
+class NoChanges(DeploymentException):
+    message = "There is no changes to apply"

nailgun/nailgun/errors/disk.py

@@ -0,0 +1,29 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class DiskException(NailgunException):
+    """Base disk exception"""
+
+
+class NotEnoughFreeSpace(DiskException):
+    message = "Not enough free space"
+
+
+class NotEnoughOsdNodes(DiskException):
+    message = "Not enough OSD nodes"

nailgun/nailgun/errors/extension.py

@@ -0,0 +1,25 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class ExtensionException(NailgunException):
+    """Base extension exception"""
+
+
+class CannotFindExtension(ExtensionException):
+    message = "Cannot find extension"

nailgun/nailgun/errors/mongodb.py

@@ -0,0 +1,29 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class MongoException(NailgunException):
+    """Base mongodb exception"""
+
+
+class ExtMongoCheckerError(MongoException):
+    message = "Mongo nodes shouldn`t be used with external mongo"
+
+
+class MongoNodesCheckError(MongoException):
+    message = "Mongo nodes have to be present if ceilometer is chosen"

nailgun/nailgun/errors/network.py

@@ -0,0 +1,95 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class NetworkException(NailgunException):
+    """Base network exception"""
+
+
+class AdminNetworkNotFound(NetworkException):
+    message = "Admin network info not found"
+
+
+class InvalidNetworkCidr(NetworkException):
+    message = "Invalid network CIDR"
+
+
+class InvalidNetworkVLANIDs(NetworkException):
+    message = "Invalid network VLAN IDs"
+
+
+class AssignIPError(NetworkException):
+    message = "Failed to assign IP to node"
+
+
+class NetworkCheckError(NetworkException):
+    message = "Network checking failed"
+
+
+class CantRemoveOldVerificationTask(NetworkException):
+    message = "Can't remove old verification task, still running"
+
+
+class OutOfVLANs(NetworkException):
+    message = "Not enough available VLAN IDs"
+
+
+class OutOfIPs(NetworkException):
+    message = "Not enough free IP addresses in pool"
+
+
+class NoSuitableCIDR(NetworkException):
+    message = "Cannot find suitable CIDR"
+
+
+class CanNotFindInterface(NetworkException):
+    message = "Cannot find interface"
+
+
+class CanNotDetermineEndPointIP(NetworkException):
+    message = "Cannot determine end point IP"
+
+
+class CanNotFindNetworkForNode(NetworkException):
+    message = "Cannot find network for node"
+
+
+class CanNotFindNetworkForNodeGroup(NetworkException):
+    message = "Cannot find network for node group"
+
+
+class CanNotFindCommonNodeGroup(NetworkException):
+    message = "Node role doesn't have common node group"
+
+
+class NetworkRoleConflict(NetworkException):
+    message = "Cannot override existing network role"
+
+
+class DuplicatedVIPNames(NetworkException):
+    message = ("Cannot assign VIPs for the cluster due to overlapping of"
+               " names of the VIPs")
+
+
+class UpdateDnsmasqTaskIsRunning(NetworkException):
+    message = ("update_dnsmasq task is not finished after the previous"
+               " configuration change. Please try again after a few seconds")
+
+
+class UnresolvableConflict(NetworkException):
+    message = "Unresolvable conflict"

nailgun/nailgun/errors/network_template.py

@@ -0,0 +1,41 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .network import NetworkException
+
+
+class NetworkTemplateException(NetworkException):
+    """Base network template exception"""
+
+
+class NetworkTemplateMissingRoles(NetworkTemplateException):
+    message = "Roles are missing from network template"
+
+
+class NetworkTemplateMissingNetRoles(NetworkTemplateException):
+    message = "Network roles are missing"
+
+
+class NetworkTemplateMissingNetworkGroup(NetworkTemplateException):
+    message = "Network group is missing"
+
+
+class NetworkTemplateCannotBeApplied(NetworkTemplateException):
+    message = "Network template cannot be applied"
+
+
+class NovaNetworkNotSupported(NetworkException):
+    message = "Nova network is not supported in current release"

nailgun/nailgun/errors/node.py

@@ -0,0 +1,37 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class NodeNotBelongToCluster(NailgunException):
+    message = "The Node doesn't belong to the Cluster"
+
+
+class NodeDiscoveringException(NailgunException):
+    """Base node discovering exception"""
+
+
+class InvalidInterfacesInfo(NodeDiscoveringException):
+    message = "Invalid interfaces info"
+
+
+class InvalidMetadata(NodeDiscoveringException):
+    message = "Invalid metadata specified for node"
+
+
+class CannotFindNodeIDForDiscovering(NodeDiscoveringException):
+    message = "Cannot find node for discovering"

nailgun/nailgun/errors/parses.py

@@ -0,0 +1,33 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class ExpressionParserException(NailgunException):
+    """Base expression parser exception"""
+
+
+class LexError(ExpressionParserException):
+    message = "Illegal character"
+
+
+class ParseError(ExpressionParserException):
+    message = "Synxtax error"
+
+
+class UnknownModel(ExpressionParserException):
+    message = "Unknown model"

nailgun/nailgun/errors/plugins.py

@@ -0,0 +1,25 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class PluginException(NailgunException):
+    """Base plugn exception"""
+
+
+class PackageVersionIsNotCompatible(PluginException):
+    message = "Package version is not compatible"

nailgun/nailgun/errors/rpc.py

@@ -0,0 +1,25 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class RPCException(NailgunException):
+    """Base RPC exception"""
+
+
+class CannotFindTask(RPCException):
+    message = "Cannot find task"

nailgun/nailgun/errors/validation.py

@@ -0,0 +1,37 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class ValidationException(NailgunException):
+    """Base validateion exception"""
+
+
+class InvalidData(ValidationException):
+    message = "Invalid data received"
+
+
+class AlreadyExists(ValidationException):
+    message = "Object already exists"
+
+
+class JsonDecodeError(InvalidData):
+    message = "Malformed json format"
+
+
+class JsonValidationError(InvalidData):
+    message = "JSON data is not valid"

nailgun/nailgun/errors/zabbix.py

@@ -0,0 +1,29 @@
+# coding: utf-8
+
+# Copyright 2016 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from .base import NailgunException
+
+
+class ZabbixException(NailgunException):
+    """Base zabbix exception"""
+
+
+class CannotMakeZabbixRequest(ZabbixException):
+    message = "Can't make a request to Zabbix"
+
+
+class ZabbixRequestError(ZabbixException):
+    message = "Zabbix request returned an error"

nailgun/nailgun/expression/expression_parser.py

@@ -17,7 +17,7 @@
 import ply.lex
 import ply.yacc
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.expression.objects import ModelPathWrapper
 from nailgun.expression.objects import ScalarWrapper
 from nailgun.expression.objects import SubexpressionWrapper

nailgun/nailgun/extensions/cluster_upgrade/tests/test_validators.py

@@ -19,7 +19,7 @@ import mock
 from oslo_serialization import jsonutils
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.settings import settings
 from nailgun.test import base
 

nailgun/nailgun/extensions/cluster_upgrade/validators.py

@@ -17,7 +17,7 @@
 from nailgun.api.v1.validators import assignment
 from nailgun.api.v1.validators import base
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 from .objects import adapters

nailgun/nailgun/extensions/manager.py

@@ -18,7 +18,7 @@ from itertools import chain
 
 from stevedore.extension import ExtensionManager
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions import consts
 
 _EXTENSION_MANAGER = None

nailgun/nailgun/extensions/network_manager/manager.py

@@ -27,7 +27,8 @@ from netaddr import IPRange
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+
+from nailgun import errors
 from nailgun.extensions.network_manager.objects.serializers.nic import \
     NodeInterfacesSerializer
 from nailgun.logger import logger

nailgun/nailgun/extensions/network_manager/managers/neutron.py

@@ -22,7 +22,7 @@ from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 
 from nailgun.extensions.network_manager.manager import AllocateVIPs70Mixin

nailgun/nailgun/extensions/network_manager/objects/ip_addr.py

@@ -19,7 +19,7 @@ from sqlalchemy.sql import not_
 
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions.network_manager.objects.serializers.ip_addr import \
     IPAddrSerializer
 from nailgun.objects import Cluster

nailgun/nailgun/extensions/network_manager/objects/network_group.py

@@ -19,7 +19,7 @@ from netaddr import IPNetwork
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions.network_manager.objects.serializers.network_group \
     import NetworkGroupSerializer
 from nailgun.logger import logger

nailgun/nailgun/extensions/volume_manager/manager.py

@@ -25,7 +25,7 @@ from functools import partial
 from oslo_serialization import jsonutils
 import six
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 
 from .objects.adapters import NailgunNodeAdapter

nailgun/nailgun/extensions/volume_manager/validators/disks.py

@@ -17,7 +17,7 @@
 from ..objects.adapters import NailgunNodeAdapter
 from .json_schema.disks import disks_simple_format_schema
 from nailgun.api.v1.validators.base import BasicValidator
-from nailgun.errors import errors
+from nailgun import errors
 
 
 class NodeDisksValidator(BasicValidator):

nailgun/nailgun/lcm/task_serializer.py

@@ -20,7 +20,7 @@ import re
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.expression import Expression
 from nailgun.logger import logger
 from nailgun.settings import settings

nailgun/nailgun/lcm/transaction_serializer.py

@@ -19,7 +19,7 @@ from distutils.version import StrictVersion
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.lcm.task_serializer import TasksSerializersFactory
 from nailgun.logger import logger
 from nailgun.utils.role_resolver import NameMatchingPolicy

nailgun/nailgun/network/checker.py

@@ -23,7 +23,7 @@ import netaddr
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun import objects
 from nailgun.task.helpers import TaskHelper

nailgun/nailgun/objects/base.py

@@ -33,7 +33,7 @@ from sqlalchemy.orm import Query
 from nailgun.objects.serializers.base import BasicSerializer
 
 from nailgun.db import db
-from nailgun.errors import errors
+from nailgun import errors
 
 
 class NailgunObject(object):

nailgun/nailgun/objects/cluster.py

@@ -32,7 +32,7 @@ from sqlalchemy.orm.exc import NoResultFound
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions import fire_callback_on_cluster_delete
 from nailgun.extensions import fire_callback_on_node_collection_delete
 from nailgun.logger import logger

nailgun/nailgun/objects/deployment_graph.py

@@ -19,7 +19,7 @@ import six
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun.objects import NailgunCollection
 from nailgun.objects import NailgunObject

nailgun/nailgun/objects/master_node_settings.py

@@ -16,7 +16,7 @@ import six
 
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import MasterNodeSettings
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import logger
 from nailgun.objects.base import NailgunObject
 from nailgun.objects.serializers.master_node_settings \

nailgun/nailgun/objects/node.py

@@ -36,7 +36,7 @@ from sqlalchemy.orm import subqueryload_all
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions import fire_callback_on_node_collection_delete
 from nailgun.extensions import fire_callback_on_node_create
 from nailgun.extensions import fire_callback_on_node_delete

nailgun/nailgun/objects/node_group.py

@@ -19,7 +19,7 @@ from nailgun.objects.serializers.node_group import NodeGroupSerializer
 
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.objects import Cluster
 from nailgun.objects import NailgunCollection
 from nailgun.objects import NailgunObject

nailgun/nailgun/objects/notification.py

@@ -18,7 +18,7 @@ from datetime import datetime
 
 from nailgun.db.sqlalchemy import models
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 
 from nailgun.objects import NailgunCollection

nailgun/nailgun/objects/openstack_config.py

@@ -15,7 +15,7 @@
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.objects import NailgunCollection
 from nailgun.objects import NailgunObject
 from nailgun.objects.serializers.openstack_config \

nailgun/nailgun/objects/task.py

@@ -24,7 +24,7 @@ from nailgun.db.sqlalchemy import models
 
 from nailgun import consts
 
-from nailgun.errors import errors
+from nailgun import errors
 
 from nailgun.logger import logger
 

nailgun/nailgun/objects/transaction.py

@@ -17,7 +17,7 @@
 from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.objects import NailgunCollection
 from nailgun.objects import NailgunObject
 from nailgun.objects.serializers.transaction import TransactionSerializer

nailgun/nailgun/orchestrator/base_serializers.py

@@ -21,7 +21,7 @@ from netaddr import IPNetwork
 
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import NetworkGroup
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.settings import settings
 

nailgun/nailgun/orchestrator/orchestrator_graph.py

@@ -24,7 +24,7 @@ import networkx as nx
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun import objects
 from nailgun.orchestrator import priority_serializers as ps

nailgun/nailgun/orchestrator/plugins_serializers.py

@@ -21,7 +21,7 @@ import itertools
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 import nailgun.orchestrator.tasks_templates as templates
 from nailgun.settings import settings

nailgun/nailgun/orchestrator/task_based_deployment.py

@@ -22,7 +22,7 @@ import itertools
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun.orchestrator import plugins_serializers
 from nailgun.orchestrator.tasks_serializer import CreateVMsOnCompute

nailgun/nailgun/orchestrator/tasks_serializer.py

@@ -21,7 +21,7 @@ import six
 import yaml
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.expression import Expression
 from nailgun import objects
 from nailgun.orchestrator import deployment_serializers

nailgun/nailgun/plugins/adapters.py

@@ -24,7 +24,7 @@ import six
 import yaml
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun.objects.deployment_graph import DeploymentGraph
 from nailgun.settings import settings

nailgun/nailgun/plugins/manager.py

@@ -16,7 +16,7 @@ import copy
 import six
 from six.moves import map
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun.objects.plugin import ClusterPlugins
 from nailgun.objects.plugin import Plugin

nailgun/nailgun/policy/merge.py

@@ -17,7 +17,7 @@
 import abc
 import six
 
-from nailgun.errors import errors
+from nailgun import errors
 
 
 @six.add_metaclass(abc.ABCMeta)

nailgun/nailgun/rpc/receiver.py

@@ -26,7 +26,7 @@ from oslo_serialization import jsonutils
 from sqlalchemy import or_
 
 from nailgun import consts
-from nailgun.errors import errors as nailgun_errors
+from nailgun import errors as nailgun_errors
 from nailgun import notifier
 from nailgun import objects
 from nailgun.settings import settings

nailgun/nailgun/rpc/receiverd.py

@@ -30,7 +30,7 @@ from kombu.mixins import ConsumerMixin
 import amqp.exceptions as amqp_exceptions
 
 from nailgun.db import db
-from nailgun.errors import errors
+from nailgun import errors
 import nailgun.rpc as rpc
 from nailgun.rpc.receiver import NailgunReceiver
 from nailgun.rpc import utils

nailgun/nailgun/rpc/threaded.py

@@ -22,7 +22,7 @@ from kombu import Connection
 from kombu.mixins import ConsumerMixin
 
 from nailgun.db import db
-from nailgun.errors import errors
+from nailgun import errors
 import nailgun.rpc as rpc
 from nailgun.rpc.receiver import NailgunReceiver
 

nailgun/nailgun/task/helpers.py

@@ -25,7 +25,7 @@ from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import Node
 from nailgun.db.sqlalchemy.models import Task
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun.statistics.fuel_statistics.tasks_params_white_lists \
     import task_output_white_list

nailgun/nailgun/task/manager.py

@@ -29,7 +29,7 @@ from nailgun import consts
 from nailgun.db import db
 from nailgun.db.sqlalchemy.models import Cluster
 from nailgun.db.sqlalchemy.models import Task
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.logger import logger
 from nailgun import notifier
 from nailgun import objects

nailgun/nailgun/task/task.py

@@ -35,7 +35,7 @@ from nailgun.db.sqlalchemy.models import CapacityLog
 from nailgun.db.sqlalchemy.models import Cluster
 from nailgun.db.sqlalchemy.models import Node
 from nailgun.db.sqlalchemy.models import Task
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions.network_manager.manager import NetworkManager
 from nailgun import lcm
 from nailgun.logger import logger

nailgun/nailgun/test/base.py

@@ -42,7 +42,7 @@ from webtest import app
 import nailgun
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.settings import settings
 
 from nailgun.db import db

nailgun/nailgun/test/integration/test_mongo_nodes.py

@@ -14,7 +14,7 @@
 
 from nailgun.consts import TASK_NAMES
 from nailgun.db.sqlalchemy.models import Task
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.task.task import CheckBeforeDeploymentTask
 from nailgun.test import base

nailgun/nailgun/test/integration/test_network_manager.py

@@ -29,7 +29,7 @@ import yaml
 
 import nailgun
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions.network_manager.objects.serializers \
     import network_configuration
 from nailgun import objects

nailgun/nailgun/test/integration/test_network_validation.py

@@ -25,7 +25,7 @@ from nailgun.db.sqlalchemy.models import Cluster
 from nailgun.db.sqlalchemy.models import NetworkGroup
 from nailgun.db.sqlalchemy.models import NeutronConfig
 from nailgun.db.sqlalchemy.models import NovaNetworkConfig
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.network.checker import NetworkCheck
 from nailgun import objects
 from nailgun.test.base import BaseIntegrationTest

nailgun/nailgun/test/integration/test_notification.py

@@ -21,7 +21,7 @@ from oslo_serialization import jsonutils
 from nailgun import consts
 from nailgun.db.sqlalchemy.models import Notification
 from nailgun.db.sqlalchemy.models import Task
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import notifier
 from nailgun.rpc import receiver as rcvr
 from nailgun.test.base import BaseIntegrationTest

nailgun/nailgun/test/integration/test_orchestrator_handlers.py

@@ -19,7 +19,7 @@ from oslo_serialization import jsonutils
 import six
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.objects import DeploymentGraph
 from nailgun.orchestrator.task_based_deployment import TaskProcessor

nailgun/nailgun/test/integration/test_plugin_manager.py

@@ -18,7 +18,7 @@ import mock
 import uuid
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.objects import ClusterPlugins
 from nailgun.plugins.adapters import PluginAdapterV3
 from nailgun.plugins.manager import PluginManager

nailgun/nailgun/test/integration/test_task_deploy.py

@@ -17,7 +17,7 @@
 import mock
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.objects import Task
 from nailgun.orchestrator.task_based_deployment import TaskProcessor
 from nailgun.test.base import BaseIntegrationTest

nailgun/nailgun/test/integration/test_task_managers.py

@@ -34,7 +34,7 @@ from nailgun.consts import TASK_NAMES
 from nailgun.consts import TASK_STATUSES
 
 from nailgun.db.sqlalchemy import models
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.rpc.receiver import NailgunReceiver
 from nailgun.task.helpers import TaskHelper
 from nailgun.task import manager

nailgun/nailgun/test/integration/test_verify_node_interface_update.py

@@ -16,7 +16,7 @@ import mock
 
 from nailgun.api.v1.validators.network import NetAssignmentValidator
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.test.base import BaseValidatorTest
 from nailgun import utils

nailgun/nailgun/test/unit/test_assignment_validator.py

@@ -13,7 +13,7 @@
 #    under the License.
 
 from nailgun.api.v1.validators.assignment import NodeAssignmentValidator
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.test.base import BaseUnitTest
 
 

nailgun/nailgun/test/unit/test_attributes_validator.py

@@ -20,7 +20,7 @@ import yaml
 
 from nailgun.api.v1.validators import base
 from nailgun.api.v1.validators import cluster
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.test import base as base_test
 
 

nailgun/nailgun/test/unit/test_cluster_validator.py

@@ -21,7 +21,7 @@ from oslo_serialization import jsonutils
 from nailgun.api.v1.validators.cluster import ClusterStopDeploymentValidator
 from nailgun.api.v1.validators.cluster import ClusterValidator
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.test.base import BaseTestCase
 

nailgun/nailgun/test/unit/test_expression_parser.py

@@ -16,7 +16,7 @@
 
 import inspect
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.expression import Expression
 from nailgun.test.base import BaseTestCase
 

nailgun/nailgun/test/unit/test_extensions.py

@@ -17,7 +17,7 @@
 import copy
 import mock
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.extensions import BaseExtension
 from nailgun.extensions import BasePipeline
 from nailgun.extensions import fire_callback_on_cluster_delete

nailgun/nailgun/test/unit/test_graph_serializer.py

@@ -21,7 +21,7 @@ from itertools import groupby
 import mock
 import yaml
 
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.orchestrator import graph_configuration
 from nailgun.orchestrator import orchestrator_graph
 from nailgun.test import base

nailgun/nailgun/test/unit/test_ip_addr_validator.py

@@ -18,7 +18,7 @@ import copy
 import mock
 
 from nailgun.api.v1.validators import ip_addr
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.test import base
 
 

nailgun/nailgun/test/unit/test_lcm_task_serializers.py

@@ -14,7 +14,7 @@
 #    under the License.
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.lcm.context import TransactionContext
 from nailgun.lcm import task_serializer
 from nailgun.settings import settings

nailgun/nailgun/test/unit/test_lcm_transaction_serializer.py

@@ -17,7 +17,7 @@
 import mock
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import lcm
 from nailgun.utils.role_resolver import RoleResolver
 

nailgun/nailgun/test/unit/test_logs_handlers.py

@@ -26,7 +26,7 @@ from oslo_serialization import jsonutils
 
 import nailgun
 from nailgun.api.v1.handlers.logs import read_backwards
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.settings import settings
 from nailgun.task.manager import DumpTaskManager
 from nailgun.task.task import DumpTask

nailgun/nailgun/test/unit/test_network_check.py

@@ -21,7 +21,7 @@ from nailgun.db.sqlalchemy.models import Cluster
 from nailgun.db.sqlalchemy.models import network as network_db
 from nailgun.db.sqlalchemy.models import NetworkGroup
 from nailgun.db.sqlalchemy.models import Task
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.network.checker import NetworkCheck
 from nailgun.task import helpers
 from nailgun.task.manager import ApplyChangesTaskManager

nailgun/nailgun/test/unit/test_network_configuration_validator.py

@@ -23,7 +23,7 @@ from nailgun.api.v1.validators.network import \
 from nailgun.api.v1.validators.network import NovaNetworkConfigurationValidator
 from nailgun import consts
 from nailgun.db.sqlalchemy.models import NetworkGroup
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 from nailgun.test import base