Request Syntax Request Parameters Response Syntax Response Elements Errors See Also

UpdateRegexPatternSet

Note

AWS WAF Classic support will end on September 30, 2025.

This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.

For the latest version of AWS WAF , use the AWS WAFV2 API and see the AWS WAF Developer Guide. With the latest version, AWS WAF has a single set of endpoints for regional and global use.

Inserts or deletes RegexPatternString objects in a RegexPatternSet. For each RegexPatternString object, you specify the following values:

Whether to insert or delete the RegexPatternString.
The regular expression pattern that you want to insert or delete. For more information, see RegexPatternSet.

For example, you can create a RegexPatternString such as B[a@]dB[o0]t. AWS WAF will match this RegexPatternString to:

BadBot
BadB0t
B@dBot
B@dB0t

To create and configure a RegexPatternSet, perform the following steps:

Create a RegexPatternSet. For more information, see CreateRegexPatternSet.
Use GetChangeToken to get the change token that you provide in the ChangeToken parameter of an UpdateRegexPatternSet request.
Submit an UpdateRegexPatternSet request to specify the regular expression pattern that you want AWS WAF to watch for.

For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.

Request Syntax


{
   "ChangeToken": "string",
   "RegexPatternSetId": "string",
   "Updates": [ 
      { 
         "Action": "string",
         "RegexPatternString": "string"
      }
   ]
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

ChangeToken

The value returned by the most recent call to GetChangeToken.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: .*\S.*

Required: Yes

RegexPatternSetId

The RegexPatternSetId of the RegexPatternSet that you want to update. RegexPatternSetId is returned by CreateRegexPatternSet and by ListRegexPatternSets.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: .*\S.*

Required: Yes

Updates

An array of RegexPatternSetUpdate objects that you want to insert into or delete from a RegexPatternSet.

Type: Array of RegexPatternSetUpdate objects

Array Members: Minimum number of 1 item.

Required: Yes

Response Syntax


{
   "ChangeToken": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

ChangeToken

The ChangeToken that you used to submit the UpdateRegexPatternSet request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: .*\S.*

Errors

For information about the errors that are common to all actions, see Common Errors.

WAFInternalErrorException

The operation failed because of a system problem, even though the request was valid. Retry your request.

HTTP Status Code: 500

WAFInvalidAccountException

The operation failed because you tried to create, update, or delete an object by using an invalid account identifier.

HTTP Status Code: 400

WAFInvalidOperationException

The operation failed because there was nothing to do. For example:

You tried to remove a Rule from a WebACL, but the Rule isn't in the specified WebACL.
You tried to remove an IP address from an IPSet, but the IP address isn't in the specified IPSet.
You tried to remove a ByteMatchTuple from a ByteMatchSet, but the ByteMatchTuple isn't in the specified WebACL.
You tried to add a Rule to a WebACL, but the Rule already exists in the specified WebACL.
You tried to add a ByteMatchTuple to a ByteMatchSet, but the ByteMatchTuple already exists in the specified WebACL.

HTTP Status Code: 400

WAFInvalidRegexPatternException

The regular expression (regex) you specified in RegexPatternString is invalid.

HTTP Status Code: 400

WAFLimitsExceededException

The operation exceeds a resource limit, for example, the maximum number of WebACL objects that you can create for an AWS account. For more information, see AWS WAF Classic quotas in the AWS WAF Developer Guide.

HTTP Status Code: 400

WAFNonexistentContainerException

The operation failed because you tried to add an object to or delete an object from another object that doesn't exist. For example:

You tried to add a Rule to or delete a Rule from a WebACL that doesn't exist.
You tried to add a ByteMatchSet to or delete a ByteMatchSet from a Rule that doesn't exist.
You tried to add an IP address to or delete an IP address from an IPSet that doesn't exist.
You tried to add a ByteMatchTuple to or delete a ByteMatchTuple from a ByteMatchSet that doesn't exist.

HTTP Status Code: 400

WAFNonexistentItemException

The operation failed because the referenced object doesn't exist.

HTTP Status Code: 400

WAFStaleDataException

The operation failed because you tried to create, update, or delete an object by using a change token that has already been used.

HTTP Status Code: 400