Use more appropriate exceptions for validation

Use ValidationError exception type for input validation errors.

Change-Id: I5ab58fd64f4745a2e558392bff649b05401ed57a
Closes-Bug: 1482279

troveclient/tests/test_v1_shell.py

@@ -26,6 +26,7 @@ import troveclient.v1.shell
 
 
 class ShellFixture(fixtures.Fixture):
+
     def setUp(self):
         super(ShellFixture, self).setUp()
         self.shell = troveclient.shell.OpenStackTroveShell()
@@ -122,11 +123,11 @@ class ShellTest(utils.TestCase):
 
     def test_flavor_list_error(self):
         cmd = 'flavor-list --datastore_type mysql'
-        exepcted_error_msg = ('Specify both <datastore_type> and '
-                              '<datastore_version_id> to list datastore '
-                              'version associated flavors')
+        exepcted_error_msg = ('Missing argument\(s\): '
+                              'datastore_type, datastore_version_id')
         self.assertRaisesRegexp(
-            exceptions.CommandError, exepcted_error_msg, self.run_command, cmd)
+            exceptions.MissingArgs, exepcted_error_msg, self.run_command,
+            cmd)
 
     def test_flavor_show(self):
         self.run_command('flavor-show 1')
@@ -182,7 +183,7 @@ class ShellTest(utils.TestCase):
         cmd = ('create test-member-1 1 --size 1 '
                '--nic net-id=some-id,port-id=some-id')
         self.assertRaisesRegexp(
-            exceptions.CommandError, 'Invalid nic argument',
+            exceptions.ValidationError, 'Invalid nic argument',
             self.run_command, cmd)
 
     def test_cluster_create(self):
@@ -229,7 +230,7 @@ class ShellTest(utils.TestCase):
         cmd = ('cluster-create test-clstr vertica 7.1 --instance volume=2 '
                '--instance flavor=2,volume=1')
         self.assertRaisesRegexp(
-            exceptions.CommandError, 'flavor is required',
+            exceptions.ValidationError, 'flavor is required',
             self.run_command, cmd)
 
     def test_datastore_list(self):

troveclient/v1/shell.py

@@ -134,9 +134,8 @@ def do_flavor_list(cs, args):
     elif not args.datastore_type and not args.datastore_version_id:
         flavors = cs.flavors.list()
     else:
-        err_msg = ("Specify both <datastore_type> and <datastore_version_id>"
-                   " to list datastore version associated flavors.")
-        raise exceptions.CommandError(err_msg)
+        raise exceptions.MissingArgs(['datastore_type',
+                                      'datastore_version_id'])
 
     # Fallback to str_id where necessary.
     _flavors = []
@@ -387,7 +386,7 @@ def do_create(cs, args):
                        "the form --nic <net-id=net-uuid,v4-fixed-ip=ip-addr,"
                        "port-id=port-uuid>, with at minimum net-id or port-id "
                        "(but not both) specified." % nic_str)
-            raise exceptions.CommandError(err_msg)
+            raise exceptions.ValidationError(err_msg)
         nics.append(nic_info)
 
     instance = cs.instances.create(args.name,
@@ -440,12 +439,11 @@ def do_cluster_create(cs, args):
                     instance_info[k] = v
         if not instance_info.get('flavorRef'):
             err_msg = ("flavor is required. %s." % INSTANCE_ERROR)
-            raise exceptions.CommandError(err_msg)
+            raise exceptions.ValidationError(err_msg)
         instances.append(instance_info)
 
     if len(instances) == 0:
-        err_msg = ("An instance must be specified. %s." % INSTANCE_ERROR)
-        raise exceptions.CommandError(err_msg)
+        raise exceptions.MissingArgs(['instance'])
 
     cluster = cs.clusters.create(args.name,
                                  args.datastore,

troveclient/v1/users.py

@@ -16,11 +16,13 @@
 
 from troveclient import base
 from troveclient import common
+from troveclient import exceptions
 from troveclient.v1 import databases
 
 
 class User(base.Resource):
     """A database user."""
+
     def __repr__(self):
         return "<User: %s>" % self.name
 
@@ -67,7 +69,8 @@ class Users(base.ManagerWithFind):
         :rtype: :class:`User`.
         """
         if not newuserattr:
-            raise Exception("No updates specified for user %s" % username)
+            raise exceptions.ValidationError("No updates specified for user %s"
+                                             % username)
         instance_id = base.getid(instance)
         user = common.quote_user_host(username, hostname)
         user_dict = {}