[codegen][python-experimental] Add configuration knob to disable JSON schema validation (#6227)

* Add knob to disable JSON schema structural validation

* Add knob to disable JSON schema structural validation

* Fix formatting issues

* execute sample scripts

* execute sample scripts

* fix multipleOf validation issue

* Add validation log for multipleOf. Add customizable validation checks. add unit tests for JSON schema validation

* Add validation log for multipleOf. Add customizable validation checks. add unit tests for JSON schema validation

* Add validation log for multipleOf. Add customizable validation checks. add unit tests for JSON schema validation

* Add validation log for multipleOf. Add customizable validation checks. add unit tests for JSON schema validation. Fix for python 2

* address review comments

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -2956,10 +2956,13 @@ public class DefaultCodegen implements CodegenConfig {
             if (p.getExclusiveMaximum() != null) {
                 property.exclusiveMaximum = p.getExclusiveMaximum();
             }
+            if (p.getMultipleOf() != null) {
+                property.multipleOf = p.getMultipleOf();
+            }
 
             // check if any validation rule defined
             // exclusive* are noop without corresponding min/max
-            if (property.minimum != null || property.maximum != null)
+            if (property.minimum != null || property.maximum != null || p.getMultipleOf() != null)
                 property.hasValidation = true;
 
         } else if (ModelUtils.isBooleanSchema(p)) { // boolean type
@@ -3031,8 +3034,9 @@ public class DefaultCodegen implements CodegenConfig {
 
             // check if any validation rule defined
             // exclusive* are noop without corresponding min/max
-            if (property.minimum != null || property.maximum != null)
+            if (property.minimum != null || property.maximum != null || p.getMultipleOf() != null) {
                 property.hasValidation = true;
+            }
 
         } else if (ModelUtils.isFreeFormObject(p)) {
             property.isFreeFormObject = true;
@@ -4151,7 +4155,7 @@ public class DefaultCodegen implements CodegenConfig {
             if (codegenParameter.maximum != null || codegenParameter.minimum != null ||
                     codegenParameter.maxLength != null || codegenParameter.minLength != null ||
                     codegenParameter.maxItems != null || codegenParameter.minItems != null ||
-                    codegenParameter.pattern != null) {
+                    codegenParameter.pattern != null || codegenParameter.multipleOf != null) {
                 codegenParameter.hasValidation = true;
             }
 
@@ -5629,7 +5633,7 @@ public class DefaultCodegen implements CodegenConfig {
         if (codegenParameter.maximum != null || codegenParameter.minimum != null ||
                 codegenParameter.maxLength != null || codegenParameter.minLength != null ||
                 codegenParameter.maxItems != null || codegenParameter.minItems != null ||
-                codegenParameter.pattern != null) {
+                codegenParameter.pattern != null || codegenParameter.multipleOf != null) {
             codegenParameter.hasValidation = true;
         }
 

modules/openapi-generator/src/main/resources/python/configuration.mustache

@@ -14,8 +14,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from {{packageName}}.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -43,6 +50,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
 {{#hasHttpSignatureMethods}}
     :param signing_info: Configuration parameters for the HTTP signature security scheme.
         Must be an instance of {{{packageName}}}.signing.HttpSigningConfiguration
@@ -139,6 +159,7 @@ conf = {{{packageName}}}.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
 {{#hasHttpSignatureMethods}}
                  signing_info=None,
 {{/hasHttpSignatureMethods}}
@@ -172,6 +193,7 @@ conf = {{{packageName}}}.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
 {{#hasHttpSignatureMethods}}
         if signing_info is not None:
             signing_info.host = host
@@ -277,6 +299,13 @@ conf = {{{packageName}}}.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
 {{#hasHttpSignatureMethods}}
         if name == "signing_info" and value is not None:
             # Ensure the host paramater from signing info is the same as

modules/openapi-generator/src/main/resources/python/python-experimental/api.mustache

@@ -376,7 +376,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

modules/openapi-generator/src/main/resources/python/python-experimental/model_templates/classvars.mustache

@@ -57,6 +57,9 @@
                 {{#-first}}'flags': (re.{{.}}{{/-first}}{{^-first}}          re.{{.}}{{/-first}}{{^-last}} | {{/-last}}{{#-last}}){{/-last}}{{/vendorExtensions.x-modifiers}}
             },
 {{/pattern}}
+{{#multipleOf}}
+            'multiple_of': {{multipleOf}},
+{{/multipleOf}}
         },
 {{/hasValidation}}
 {{/requiredVars}}
@@ -87,6 +90,9 @@
                 {{#-first}}'flags': (re.{{.}}{{/-first}}{{^-first}}          re.{{.}}{{/-first}}{{^-last}} | {{/-last}}{{#-last}}){{/-last}}{{/vendorExtensions.x-modifiers}}
             },
 {{/pattern}}
+{{#multipleOf}}
+            'multiple_of': {{multipleOf}},
+{{/multipleOf}}
         },
 {{/hasValidation}}
 {{/optionalVars}}

modules/openapi-generator/src/main/resources/python/python-experimental/model_templates/method_set_attribute.mustache

@@ -45,6 +45,7 @@
             check_validations(
                 self.validations,
                 (name,),
-                value
+                value,
+                self._configuration
             )
         self.__dict__['_data_store'][name] = value

modules/openapi-generator/src/main/resources/python/python-experimental/model_utils.mustache

@@ -369,17 +369,50 @@ def check_allowed_values(allowed_values, input_variable_path, input_values):
         )
 
 
-def check_validations(validations, input_variable_path, input_values):
+def is_json_validation_enabled(schema_keyword, configuration=None):
+    """Returns true if JSON schema validation is enabled for the specified
+    validation keyword. This can be used to skip JSON schema structural validation
+    as requested in the configuration.
+
+    Args:
+        schema_keyword (string): the name of a JSON schema validation keyword.
+        configuration (Configuration): the configuration class.
+    """
+
+    return (configuration is None or
+        not hasattr(configuration, '_disabled_client_side_validations') or
+        schema_keyword not in configuration._disabled_client_side_validations)
+
+
+def check_validations(
+        validations, input_variable_path, input_values,
+        configuration=None):
     """Raises an exception if the input_values are invalid
 
     Args:
-        validations (dict): the validation dictionary
+        validations (dict): the validation dictionary.
-        input_variable_path (tuple): the path to the input variable
+        input_variable_path (tuple): the path to the input variable.
         input_values (list/str/int/float/date/datetime): the values that we
-            are checking
+            are checking.
+        configuration (Configuration): the configuration class.
     """
+
     current_validations = validations[input_variable_path]
-    if ('max_length' in current_validations and
+    if (is_json_validation_enabled('multipleOf', configuration) and
+            'multiple_of' in current_validations and
+            isinstance(input_values, (int, float)) and
+            not (float(input_values) / current_validations['multiple_of']).is_integer()):
+        # Note 'multipleOf' will be as good as the floating point arithmetic.
+        raise ApiValueError(
+            "Invalid value for `%s`, value must be a multiple of "
+            "`%s`" % (
+                input_variable_path[0],
+                current_validations['multiple_of']
+            )
+        )
+
+    if (is_json_validation_enabled('maxLength', configuration) and
+            'max_length' in current_validations and
             len(input_values) > current_validations['max_length']):
         raise ApiValueError(
             "Invalid value for `%s`, length must be less than or equal to "
@@ -389,7 +422,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('min_length' in current_validations and
+    if (is_json_validation_enabled('minLength', configuration) and
+            'min_length' in current_validations and
             len(input_values) < current_validations['min_length']):
         raise ApiValueError(
             "Invalid value for `%s`, length must be greater than or equal to "
@@ -399,7 +433,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('max_items' in current_validations and
+    if (is_json_validation_enabled('maxItems', configuration) and
+            'max_items' in current_validations and
             len(input_values) > current_validations['max_items']):
         raise ApiValueError(
             "Invalid value for `%s`, number of items must be less than or "
@@ -409,7 +444,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('min_items' in current_validations and
+    if (is_json_validation_enabled('minItems', configuration) and
+            'min_items' in current_validations and
             len(input_values) < current_validations['min_items']):
         raise ValueError(
             "Invalid value for `%s`, number of items must be greater than or "
@@ -432,7 +468,8 @@ def check_validations(validations, input_variable_path, input_values):
             max_val = input_values
             min_val = input_values
 
-    if ('exclusive_maximum' in current_validations and
+    if (is_json_validation_enabled('exclusiveMaximum', configuration) and
+            'exclusive_maximum' in current_validations and
             max_val >= current_validations['exclusive_maximum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value less than `%s`" % (
@@ -441,7 +478,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('inclusive_maximum' in current_validations and
+    if (is_json_validation_enabled('maximum', configuration) and
+            'inclusive_maximum' in current_validations and
             max_val > current_validations['inclusive_maximum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value less than or equal to "
@@ -451,7 +489,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('exclusive_minimum' in current_validations and
+    if (is_json_validation_enabled('exclusiveMinimum', configuration) and
+            'exclusive_minimum' in current_validations and
             min_val <= current_validations['exclusive_minimum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value greater than `%s`" %
@@ -461,7 +500,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('inclusive_minimum' in current_validations and
+    if (is_json_validation_enabled('minimum', configuration) and
+            'inclusive_minimum' in current_validations and
             min_val < current_validations['inclusive_minimum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value greater than or equal "
@@ -471,7 +511,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
     flags = current_validations.get('regex', {}).get('flags', 0)
-    if ('regex' in current_validations and
+    if (is_json_validation_enabled('pattern', configuration) and
+            'regex' in current_validations and
             not re.search(current_validations['regex']['pattern'],
                           input_values, flags=flags)):
         err_msg = r"Invalid value for `%s`, must match regular expression `%s`" % (

modules/openapi-generator/src/test/resources/3_0/python-experimental/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml

@@ -1426,6 +1426,7 @@ components:
           type: integer
           maximum: 100
           minimum: 10
+          multipleOf: 2
         int32:
           type: integer
           format: int32
@@ -1438,6 +1439,7 @@ components:
           maximum: 543.2
           minimum: 32.1
           type: number
+          multipleOf: 32.5 
         float:
           type: number
           format: float

samples/client/petstore/python-asyncio/petstore_api/configuration.py

@@ -19,8 +19,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from petstore_api.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -48,6 +55,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
 
     :Example:
 
@@ -93,6 +113,7 @@ conf = petstore_api.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
                  ):
         """Constructor
         """
@@ -123,6 +144,7 @@ conf = petstore_api.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
         self.access_token = None
         """access token for OAuth/Bearer
         """
@@ -201,6 +223,13 @@ conf = petstore_api.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
 
     @classmethod
     def set_default(cls, default):

samples/client/petstore/python-experimental/petstore_api/api/another_fake_api.py

@@ -249,7 +249,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/client/petstore/python-experimental/petstore_api/api/fake_api.py

@@ -2192,7 +2192,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api.py

@@ -251,7 +251,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/client/petstore/python-experimental/petstore_api/api/pet_api.py

@@ -1256,7 +1256,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/client/petstore/python-experimental/petstore_api/api/store_api.py

@@ -590,7 +590,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/client/petstore/python-experimental/petstore_api/api/user_api.py

@@ -1049,7 +1049,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/client/petstore/python-experimental/petstore_api/configuration.py

@@ -20,8 +20,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from petstore_api.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -49,6 +56,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
 
     :Example:
 
@@ -94,6 +114,7 @@ conf = petstore_api.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
                  ):
         """Constructor
         """
@@ -124,6 +145,7 @@ conf = petstore_api.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
         self.access_token = None
         """access token for OAuth/Bearer
         """
@@ -205,6 +227,13 @@ conf = petstore_api.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
 
     @classmethod
     def set_default(cls, default):

samples/client/petstore/python-experimental/petstore_api/model_utils.py

@@ -112,7 +112,8 @@ class OpenApiModel(object):
             check_validations(
                 self.validations,
                 (name,),
-                value
+                value,
+                self._configuration
             )
         self.__dict__['_data_store'][name] = value
 
@@ -635,17 +636,50 @@ def check_allowed_values(allowed_values, input_variable_path, input_values):
         )
 
 
-def check_validations(validations, input_variable_path, input_values):
+def is_json_validation_enabled(schema_keyword, configuration=None):
+    """Returns true if JSON schema validation is enabled for the specified
+    validation keyword. This can be used to skip JSON schema structural validation
+    as requested in the configuration.
+
+    Args:
+        schema_keyword (string): the name of a JSON schema validation keyword.
+        configuration (Configuration): the configuration class.
+    """
+
+    return (configuration is None or
+        not hasattr(configuration, '_disabled_client_side_validations') or
+        schema_keyword not in configuration._disabled_client_side_validations)
+
+
+def check_validations(
+        validations, input_variable_path, input_values,
+        configuration=None):
     """Raises an exception if the input_values are invalid
 
     Args:
-        validations (dict): the validation dictionary
+        validations (dict): the validation dictionary.
-        input_variable_path (tuple): the path to the input variable
+        input_variable_path (tuple): the path to the input variable.
         input_values (list/str/int/float/date/datetime): the values that we
-            are checking
+            are checking.
+        configuration (Configuration): the configuration class.
     """
+
     current_validations = validations[input_variable_path]
-    if ('max_length' in current_validations and
+    if (is_json_validation_enabled('multipleOf', configuration) and
+            'multiple_of' in current_validations and
+            isinstance(input_values, (int, float)) and
+            not (float(input_values) / current_validations['multiple_of']).is_integer()):
+        # Note 'multipleOf' will be as good as the floating point arithmetic.
+        raise ApiValueError(
+            "Invalid value for `%s`, value must be a multiple of "
+            "`%s`" % (
+                input_variable_path[0],
+                current_validations['multiple_of']
+            )
+        )
+
+    if (is_json_validation_enabled('maxLength', configuration) and
+            'max_length' in current_validations and
             len(input_values) > current_validations['max_length']):
         raise ApiValueError(
             "Invalid value for `%s`, length must be less than or equal to "
@@ -655,7 +689,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('min_length' in current_validations and
+    if (is_json_validation_enabled('minLength', configuration) and
+            'min_length' in current_validations and
             len(input_values) < current_validations['min_length']):
         raise ApiValueError(
             "Invalid value for `%s`, length must be greater than or equal to "
@@ -665,7 +700,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('max_items' in current_validations and
+    if (is_json_validation_enabled('maxItems', configuration) and
+            'max_items' in current_validations and
             len(input_values) > current_validations['max_items']):
         raise ApiValueError(
             "Invalid value for `%s`, number of items must be less than or "
@@ -675,7 +711,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('min_items' in current_validations and
+    if (is_json_validation_enabled('minItems', configuration) and
+            'min_items' in current_validations and
             len(input_values) < current_validations['min_items']):
         raise ValueError(
             "Invalid value for `%s`, number of items must be greater than or "
@@ -698,7 +735,8 @@ def check_validations(validations, input_variable_path, input_values):
             max_val = input_values
             min_val = input_values
 
-    if ('exclusive_maximum' in current_validations and
+    if (is_json_validation_enabled('exclusiveMaximum', configuration) and
+            'exclusive_maximum' in current_validations and
             max_val >= current_validations['exclusive_maximum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value less than `%s`" % (
@@ -707,7 +745,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('inclusive_maximum' in current_validations and
+    if (is_json_validation_enabled('maximum', configuration) and
+            'inclusive_maximum' in current_validations and
             max_val > current_validations['inclusive_maximum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value less than or equal to "
@@ -717,7 +756,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('exclusive_minimum' in current_validations and
+    if (is_json_validation_enabled('exclusiveMinimum', configuration) and
+            'exclusive_minimum' in current_validations and
             min_val <= current_validations['exclusive_minimum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value greater than `%s`" %
@@ -727,7 +767,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('inclusive_minimum' in current_validations and
+    if (is_json_validation_enabled('minimum', configuration) and
+            'inclusive_minimum' in current_validations and
             min_val < current_validations['inclusive_minimum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value greater than or equal "
@@ -737,7 +778,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
     flags = current_validations.get('regex', {}).get('flags', 0)
-    if ('regex' in current_validations and
+    if (is_json_validation_enabled('pattern', configuration) and
+            'regex' in current_validations and
             not re.search(current_validations['regex']['pattern'],
                           input_values, flags=flags)):
         err_msg = r"Invalid value for `%s`, must match regular expression `%s`" % (

samples/client/petstore/python-tornado/petstore_api/configuration.py

@@ -20,8 +20,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from petstore_api.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -49,6 +56,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
 
     :Example:
 
@@ -94,6 +114,7 @@ conf = petstore_api.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
                  ):
         """Constructor
         """
@@ -124,6 +145,7 @@ conf = petstore_api.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
         self.access_token = None
         """access token for OAuth/Bearer
         """
@@ -205,6 +227,13 @@ conf = petstore_api.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
 
     @classmethod
     def set_default(cls, default):

samples/client/petstore/python/petstore_api/configuration.py

@@ -20,8 +20,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from petstore_api.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -49,6 +56,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
 
     :Example:
 
@@ -94,6 +114,7 @@ conf = petstore_api.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
                  ):
         """Constructor
         """
@@ -124,6 +145,7 @@ conf = petstore_api.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
         self.access_token = None
         """access token for OAuth/Bearer
         """
@@ -205,6 +227,13 @@ conf = petstore_api.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
 
     @classmethod
     def set_default(cls, default):

samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api.py

@@ -249,7 +249,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api.py

@@ -235,7 +235,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api.py

@@ -2054,7 +2054,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api.py

@@ -251,7 +251,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api.py

@@ -1259,7 +1259,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api.py

@@ -592,7 +592,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api.py

@@ -1057,7 +1057,8 @@ class Endpoint(object):
                 check_validations(
                     self.validations,
                     (param,),
-                    kwargs[param]
+                    kwargs[param],
+                    configuration=self.api_client.configuration
                 )
 
         if kwargs['_check_input_type'] is False:

samples/openapi3/client/petstore/python-experimental/petstore_api/configuration.py

@@ -20,8 +20,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from petstore_api.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -49,6 +56,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
     :param signing_info: Configuration parameters for the HTTP signature security scheme.
         Must be an instance of petstore_api.signing.HttpSigningConfiguration
 
@@ -135,6 +155,7 @@ conf = petstore_api.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
                  signing_info=None,
                  ):
         """Constructor
@@ -166,6 +187,7 @@ conf = petstore_api.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
         if signing_info is not None:
             signing_info.host = host
         self.signing_info = signing_info
@@ -252,6 +274,13 @@ conf = petstore_api.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
         if name == "signing_info" and value is not None:
             # Ensure the host paramater from signing info is the same as
             # Configuration.host.

samples/openapi3/client/petstore/python-experimental/petstore_api/model_utils.py

@@ -112,7 +112,8 @@ class OpenApiModel(object):
             check_validations(
                 self.validations,
                 (name,),
-                value
+                value,
+                self._configuration
             )
         self.__dict__['_data_store'][name] = value
 
@@ -635,17 +636,50 @@ def check_allowed_values(allowed_values, input_variable_path, input_values):
         )
 
 
-def check_validations(validations, input_variable_path, input_values):
+def is_json_validation_enabled(schema_keyword, configuration=None):
+    """Returns true if JSON schema validation is enabled for the specified
+    validation keyword. This can be used to skip JSON schema structural validation
+    as requested in the configuration.
+
+    Args:
+        schema_keyword (string): the name of a JSON schema validation keyword.
+        configuration (Configuration): the configuration class.
+    """
+
+    return (configuration is None or
+        not hasattr(configuration, '_disabled_client_side_validations') or
+        schema_keyword not in configuration._disabled_client_side_validations)
+
+
+def check_validations(
+        validations, input_variable_path, input_values,
+        configuration=None):
     """Raises an exception if the input_values are invalid
 
     Args:
-        validations (dict): the validation dictionary
+        validations (dict): the validation dictionary.
-        input_variable_path (tuple): the path to the input variable
+        input_variable_path (tuple): the path to the input variable.
         input_values (list/str/int/float/date/datetime): the values that we
-            are checking
+            are checking.
+        configuration (Configuration): the configuration class.
     """
+
     current_validations = validations[input_variable_path]
-    if ('max_length' in current_validations and
+    if (is_json_validation_enabled('multipleOf', configuration) and
+            'multiple_of' in current_validations and
+            isinstance(input_values, (int, float)) and
+            not (float(input_values) / current_validations['multiple_of']).is_integer()):
+        # Note 'multipleOf' will be as good as the floating point arithmetic.
+        raise ApiValueError(
+            "Invalid value for `%s`, value must be a multiple of "
+            "`%s`" % (
+                input_variable_path[0],
+                current_validations['multiple_of']
+            )
+        )
+
+    if (is_json_validation_enabled('maxLength', configuration) and
+            'max_length' in current_validations and
             len(input_values) > current_validations['max_length']):
         raise ApiValueError(
             "Invalid value for `%s`, length must be less than or equal to "
@@ -655,7 +689,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('min_length' in current_validations and
+    if (is_json_validation_enabled('minLength', configuration) and
+            'min_length' in current_validations and
             len(input_values) < current_validations['min_length']):
         raise ApiValueError(
             "Invalid value for `%s`, length must be greater than or equal to "
@@ -665,7 +700,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('max_items' in current_validations and
+    if (is_json_validation_enabled('maxItems', configuration) and
+            'max_items' in current_validations and
             len(input_values) > current_validations['max_items']):
         raise ApiValueError(
             "Invalid value for `%s`, number of items must be less than or "
@@ -675,7 +711,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('min_items' in current_validations and
+    if (is_json_validation_enabled('minItems', configuration) and
+            'min_items' in current_validations and
             len(input_values) < current_validations['min_items']):
         raise ValueError(
             "Invalid value for `%s`, number of items must be greater than or "
@@ -698,7 +735,8 @@ def check_validations(validations, input_variable_path, input_values):
             max_val = input_values
             min_val = input_values
 
-    if ('exclusive_maximum' in current_validations and
+    if (is_json_validation_enabled('exclusiveMaximum', configuration) and
+            'exclusive_maximum' in current_validations and
             max_val >= current_validations['exclusive_maximum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value less than `%s`" % (
@@ -707,7 +745,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('inclusive_maximum' in current_validations and
+    if (is_json_validation_enabled('maximum', configuration) and
+            'inclusive_maximum' in current_validations and
             max_val > current_validations['inclusive_maximum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value less than or equal to "
@@ -717,7 +756,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('exclusive_minimum' in current_validations and
+    if (is_json_validation_enabled('exclusiveMinimum', configuration) and
+            'exclusive_minimum' in current_validations and
             min_val <= current_validations['exclusive_minimum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value greater than `%s`" %
@@ -727,7 +767,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
 
-    if ('inclusive_minimum' in current_validations and
+    if (is_json_validation_enabled('minimum', configuration) and
+            'inclusive_minimum' in current_validations and
             min_val < current_validations['inclusive_minimum']):
         raise ApiValueError(
             "Invalid value for `%s`, must be a value greater than or equal "
@@ -737,7 +778,8 @@ def check_validations(validations, input_variable_path, input_values):
             )
         )
     flags = current_validations.get('regex', {}).get('flags', 0)
-    if ('regex' in current_validations and
+    if (is_json_validation_enabled('pattern', configuration) and
+            'regex' in current_validations and
             not re.search(current_validations['regex']['pattern'],
                           input_values, flags=flags)):
         err_msg = r"Invalid value for `%s`, must match regular expression `%s`" % (

samples/openapi3/client/petstore/python-experimental/petstore_api/models/format_test.py

@@ -65,6 +65,7 @@ class FormatTest(ModelNormal):
         ('number',): {
             'inclusive_maximum': 543.2,
             'inclusive_minimum': 32.1,
+            'multiple_of': 32.5,
         },
         ('password',): {
             'max_length': 64,
@@ -73,6 +74,7 @@ class FormatTest(ModelNormal):
         ('integer',): {
             'inclusive_maximum': 100,
             'inclusive_minimum': 10,
+            'multiple_of': 2,
         },
         ('int32',): {
             'inclusive_maximum': 200,

samples/openapi3/client/petstore/python-experimental/tests/test_api_validation.py

@@ -0,0 +1,131 @@
+# coding: utf-8
+
+# flake8: noqa
+
+"""
+Run the tests.
+$ pip install nose (optional)
+$ cd OpenAPIetstore-python
+$ nosetests -v
+"""
+
+import os
+import time
+import atexit
+import datetime
+import json
+import sys
+import weakref
+import unittest
+from dateutil.parser import parse
+from collections import namedtuple
+
+import petstore_api
+import petstore_api.configuration
+
+HOST = 'http://petstore.swagger.io/v2'
+MockResponse = namedtuple('MockResponse', 'data')
+
+
+class ApiClientTests(unittest.TestCase):
+    def setUp(self):
+        self.api_client = petstore_api.ApiClient()
+
+    def test_configuration(self):
+        config = petstore_api.Configuration()
+        config.host = 'http://localhost/'
+
+        config.disabled_client_side_validations = ("multipleOf,maximum,exclusiveMaximum,minimum,exclusiveMinimum,"
+            "maxLength,minLength,pattern,maxItems,minItems")
+        with self.checkRaiseRegex(ValueError, "Invalid keyword: 'foo'"):
+            config.disabled_client_side_validations = 'foo'
+        config.disabled_client_side_validations = ""
+
+
+    def checkRaiseRegex(self, expected_exception, expected_regex):
+        if sys.version_info < (3, 0):
+            return self.assertRaisesRegexp(expected_exception, expected_regex)
+
+        return self.assertRaisesRegex(expected_exception, expected_regex)
+
+
+    def test_multiple_of(self):
+        inst = petstore_api.FormatTest(
+            byte='3',
+            date=datetime.date(2000, 1, 1),
+            password="abcdefghijkl",
+            integer=30,
+            number=65.0,
+            float=62.4
+        )
+        assert isinstance(inst, petstore_api.FormatTest)
+
+        with self.checkRaiseRegex(petstore_api.exceptions.ApiValueError, "Invalid value for `integer`, value must be a multiple of `2`"):
+          inst = petstore_api.FormatTest(
+              byte='3',
+              date=datetime.date(2000, 1, 1),
+              password="abcdefghijkl",
+              integer=31,  # Value is supposed to be multiple of '2'. An error must be raised
+              number=65.0,
+              float=62.4
+          )
+
+    def test_multiple_of_deserialization(self):
+        data = {
+            'byte': '3',
+            'date': '1970-01-01',
+            'password': "abcdefghijkl",
+            'integer': 30,
+            'number': 65.0,
+            'float': 62.4,
+        }
+        response = MockResponse(data=json.dumps(data))
+        deserialized = self.api_client.deserialize(response, (petstore_api.FormatTest,), True)
+        self.assertTrue(isinstance(deserialized, petstore_api.FormatTest))
+
+        with self.checkRaiseRegex(petstore_api.exceptions.ApiValueError, "Invalid value for `integer`, value must be a multiple of `2`"):
+          data = {
+              'byte': '3',
+              'date': '1970-01-01',
+              'password': "abcdefghijkl",
+              'integer': 31,  # Value is supposed to be multiple of '2'. An error must be raised
+              'number': 65.0,
+              'float': 62.4,
+          }
+          response = MockResponse(data=json.dumps(data))
+          deserialized = self.api_client.deserialize(response, (petstore_api.FormatTest,), True)
+
+        # Disable JSON schema validation. No error should be raised during deserialization.
+        config = petstore_api.Configuration()
+        config.disabled_client_side_validations = "multipleOf"
+        api_client = petstore_api.ApiClient(configuration=config)
+
+        data = {
+            'byte': '3',
+            'date': '1970-01-01',
+            'password': "abcdefghijkl",
+            'integer': 31, # Value is supposed to be multiple of '2'
+            'number': 65.0,
+            'float': 62.4,
+        }
+        response = MockResponse(data=json.dumps(data))
+        deserialized = api_client.deserialize(response, (petstore_api.FormatTest,), True)
+        self.assertTrue(isinstance(deserialized, petstore_api.FormatTest))
+
+        # Disable JSON schema validation but for a different keyword.
+        # An error should be raised during deserialization.
+        config = petstore_api.Configuration()
+        config.disabled_client_side_validations = "maxItems"
+        api_client = petstore_api.ApiClient(configuration=config)
+
+        with self.checkRaiseRegex(petstore_api.exceptions.ApiValueError, "Invalid value for `integer`, value must be a multiple of `2`"):
+            data = {
+                'byte': '3',
+                'date': '1970-01-01',
+                'password': "abcdefghijkl",
+                'integer': 31, # Value is supposed to be multiple of '2'
+                'number': 65.0,
+                'float': 62.4,
+            }
+            response = MockResponse(data=json.dumps(data))
+            deserialized = api_client.deserialize(response, (petstore_api.FormatTest,), True)

samples/openapi3/client/petstore/python/petstore_api/configuration.py

@@ -20,8 +20,15 @@ import urllib3
 
 import six
 from six.moves import http_client as httplib
+from petstore_api.exceptions import ApiValueError
 
 
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems'
+}
+
 class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
@@ -49,6 +56,19 @@ class Configuration(object):
       then all undeclared properties received by the server are injected into the
       additional properties map. In that case, there are undeclared properties, and
       nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
     :param signing_info: Configuration parameters for the HTTP signature security scheme.
         Must be an instance of petstore_api.signing.HttpSigningConfiguration
 
@@ -135,6 +155,7 @@ conf = petstore_api.Configuration(
                  api_key=None, api_key_prefix=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
+                 disabled_client_side_validations="",
                  signing_info=None,
                  ):
         """Constructor
@@ -166,6 +187,7 @@ conf = petstore_api.Configuration(
         """Password for HTTP basic authentication
         """
         self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
         if signing_info is not None:
             signing_info.host = host
         self.signing_info = signing_info
@@ -252,6 +274,13 @@ conf = petstore_api.Configuration(
 
     def __setattr__(self, name, value):
         object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
         if name == "signing_info" and value is not None:
             # Ensure the host paramater from signing info is the same as
             # Configuration.host.