aboutsummaryrefslogtreecommitdiffstats
path: root/keystone-moon/keystone/common/validation/validators.py
diff options
context:
space:
mode:
authorWuKong <rebirthmonkey@gmail.com>2015-06-30 18:47:29 +0200
committerWuKong <rebirthmonkey@gmail.com>2015-06-30 18:47:29 +0200
commitb8c756ecdd7cced1db4300935484e8c83701c82e (patch)
tree87e51107d82b217ede145de9d9d59e2100725bd7 /keystone-moon/keystone/common/validation/validators.py
parentc304c773bae68fb854ed9eab8fb35c4ef17cf136 (diff)
migrate moon code from github to opnfv
Change-Id: Ice53e368fd1114d56a75271aa9f2e598e3eba604 Signed-off-by: WuKong <rebirthmonkey@gmail.com>
Diffstat (limited to 'keystone-moon/keystone/common/validation/validators.py')
-rw-r--r--keystone-moon/keystone/common/validation/validators.py59
1 files changed, 59 insertions, 0 deletions
diff --git a/keystone-moon/keystone/common/validation/validators.py b/keystone-moon/keystone/common/validation/validators.py
new file mode 100644
index 00000000..a4574176
--- /dev/null
+++ b/keystone-moon/keystone/common/validation/validators.py
@@ -0,0 +1,59 @@
+# 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.
+"""Internal implementation of request body validating middleware."""
+
+import jsonschema
+
+from keystone import exception
+from keystone.i18n import _
+
+
+class SchemaValidator(object):
+ """Resource reference validator class."""
+
+ validator = None
+ validator_org = jsonschema.Draft4Validator
+
+ def __init__(self, schema):
+ # NOTE(lbragstad): If at some point in the future we want to extend
+ # our validators to include something specific we need to check for,
+ # we can do it here. Nova's V3 API validators extend the validator to
+ # include `self._validate_minimum` and `self._validate_maximum`. This
+ # would be handy if we needed to check for something the jsonschema
+ # didn't by default. See the Nova V3 validator for details on how this
+ # is done.
+ validators = {}
+ validator_cls = jsonschema.validators.extend(self.validator_org,
+ validators)
+ fc = jsonschema.FormatChecker()
+ self.validator = validator_cls(schema, format_checker=fc)
+
+ def validate(self, *args, **kwargs):
+ try:
+ self.validator.validate(*args, **kwargs)
+ except jsonschema.ValidationError as ex:
+ # NOTE: For whole OpenStack message consistency, this error
+ # message has been written in a format consistent with WSME.
+ if len(ex.path) > 0:
+ # NOTE(lbragstad): Here we could think about using iter_errors
+ # as a method of providing invalid parameters back to the
+ # user.
+ # TODO(lbragstad): If the value of a field is confidential or
+ # too long, then we should build the masking in here so that
+ # we don't expose sensitive user information in the event it
+ # fails validation.
+ detail = _("Invalid input for field '%(path)s'. The value is "
+ "'%(value)s'.") % {'path': ex.path.pop(),
+ 'value': ex.instance}
+ else:
+ detail = ex.message
+ raise exception.SchemaValidationError(detail=detail)