JsonBody
¶
Source code in docs_src/capo_wafv2/types/json_body.py
invalid_fallback_behavior
instance-attribute
¶
invalid_fallback_behavior: NotRequired[BodyParsingFallbackBehavior]
What WAF should do if it fails to completely parse the JSON body. The options are the following:
-
EVALUATE_AS_STRING- Inspect the body as plain text. WAF applies the text transformations and inspection criteria that you defined for the JSON inspection to the body text string. -
MATCH- Treat the web request as matching the rule statement. WAF applies the rule action to the request. -
NO_MATCH- Treat the web request as not matching the rule statement.
If you don't provide this setting, WAF parses and evaluates the content only up to the first parsing failure that it encounters.
WAF parsing doesn't fully validate the input JSON string, so parsing can succeed even for invalid JSON. When parsing succeeds, WAF doesn't apply the fallback behavior. For more information, see JSON body in the WAF Developer Guide.
match_pattern
instance-attribute
¶
match_pattern: JsonMatchPattern
The patterns to look for in the JSON body. WAF inspects the results of these pattern matches against the rule inspection criteria.
match_scope
instance-attribute
¶
match_scope: JsonMatchScope
The parts of the JSON to match against using the MatchPattern. If you specify ALL, WAF matches against keys and values.
All does not require a match to be found in the keys and a match to be found in the values. It requires a match to be found in the keys or the values or both. To require a match in the keys and in the values, use a logical AND statement to combine two match rules, one that inspects the keys and another that inspects the values.
oversize_handling
instance-attribute
¶
oversize_handling: NotRequired[OversizeHandling]
What WAF should do if the body is larger than WAF can inspect.
WAF does not support inspecting the entire contents of the web request body if the body exceeds the limit for the resource type. When a web request body is larger than the limit, the underlying host service only forwards the contents that are within the limit to WAF for inspection.
-
For Application Load Balancer and AppSync, the limit is fixed at 8 KB (8,192 bytes).
-
For CloudFront, API Gateway, Amazon Cognito, App Runner, and Verified Access, the default limit is 16 KB (16,384 bytes), and you can increase the limit for each resource type in the web ACL
AssociationConfig, for additional processing fees. -
For Amplify, use the CloudFront limit.
The options for oversize handling are the following:
-
CONTINUE- Inspect the available body contents normally, according to the rule inspection criteria. -
MATCH- Treat the web request as matching the rule statement. WAF applies the rule action to the request. -
NO_MATCH- Treat the web request as not matching the rule statement.
You can combine the MATCH or NO_MATCH settings for oversize handling with your rule and web ACL action settings, so that you block any request whose body is over the limit.
Default: CONTINUE