# UpdateAuthorizer
<a name="API_UpdateAuthorizer"></a>

Updates an authorizer.

Requires permission to access the [UpdateAuthorizer](https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions) action.

## Request Syntax
<a name="API_UpdateAuthorizer_RequestSyntax"></a>

```
PUT /authorizer/authorizerName HTTP/1.1
Content-type: application/json

{
   "authorizerFunctionArn": "string",
   "enableCachingForHttp": boolean,
   "status": "string",
   "tokenKeyName": "string",
   "tokenSigningPublicKeys": { 
      "string" : "string" 
   }
}
```

## URI Request Parameters
<a name="API_UpdateAuthorizer_RequestParameters"></a>

The request uses the following URI parameters.

 ** [authorizerName](#API_UpdateAuthorizer_RequestSyntax) **   <a name="iot-UpdateAuthorizer-request-uri-authorizerName"></a>
The authorizer name.  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[\w=,@-]+`   
Required: Yes

## Request Body
<a name="API_UpdateAuthorizer_RequestBody"></a>

The request accepts the following data in JSON format.

 ** [authorizerFunctionArn](#API_UpdateAuthorizer_RequestSyntax) **   <a name="iot-UpdateAuthorizer-request-authorizerFunctionArn"></a>
The ARN of the authorizer's Lambda function.  
Type: String  
Length Constraints: Maximum length of 2048.  
Pattern: `[\s\S]*`   
Required: No

 ** [enableCachingForHttp](#API_UpdateAuthorizer_RequestSyntax) **   <a name="iot-UpdateAuthorizer-request-enableCachingForHttp"></a>
When `true`, the result from the authorizer’s Lambda function is cached for the time specified in `refreshAfterInSeconds`. The cached result is used while the device reuses the same HTTP connection.  
Type: Boolean  
Required: No

 ** [status](#API_UpdateAuthorizer_RequestSyntax) **   <a name="iot-UpdateAuthorizer-request-status"></a>
The status of the update authorizer request.  
Type: String  
Valid Values: `ACTIVE | INACTIVE`   
Required: No

 ** [tokenKeyName](#API_UpdateAuthorizer_RequestSyntax) **   <a name="iot-UpdateAuthorizer-request-tokenKeyName"></a>
The key used to extract the token from the HTTP headers.   
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[a-zA-Z0-9_-]+`   
Required: No

 ** [tokenSigningPublicKeys](#API_UpdateAuthorizer_RequestSyntax) **   <a name="iot-UpdateAuthorizer-request-tokenSigningPublicKeys"></a>
The public keys used to verify the token signature.  
Type: String to string map  
Key Length Constraints: Minimum length of 1. Maximum length of 128.  
Key Pattern: `[a-zA-Z0-9:_-]+`   
Value Length Constraints: Maximum length of 5120.  
Value Pattern: `[\s\S]*`   
Required: No

## Response Syntax
<a name="API_UpdateAuthorizer_ResponseSyntax"></a>

```
HTTP/1.1 200
Content-type: application/json

{
   "authorizerArn": "string",
   "authorizerName": "string"
}
```

## Response Elements
<a name="API_UpdateAuthorizer_ResponseElements"></a>

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

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

 ** [authorizerArn](#API_UpdateAuthorizer_ResponseSyntax) **   <a name="iot-UpdateAuthorizer-response-authorizerArn"></a>
The authorizer ARN.  
Type: String  
Length Constraints: Maximum length of 2048.

 ** [authorizerName](#API_UpdateAuthorizer_ResponseSyntax) **   <a name="iot-UpdateAuthorizer-response-authorizerName"></a>
The authorizer name.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[\w=,@-]+` 

## Errors
<a name="API_UpdateAuthorizer_Errors"></a>

 ** InternalFailureException **   
An unexpected error has occurred.    
 ** message **   
The message for the exception.
HTTP Status Code: 500

 ** InvalidRequestException **   
The request is not valid.    
 ** message **   
The message for the exception.
HTTP Status Code: 400

 ** LimitExceededException **   
A limit has been exceeded.    
 ** message **   
The message for the exception.
HTTP Status Code: 410

 ** ResourceNotFoundException **   
The specified resource does not exist.    
 ** message **   
The message for the exception.
HTTP Status Code: 404

 ** ServiceUnavailableException **   
The service is temporarily unavailable.    
 ** message **   
The message for the exception.
HTTP Status Code: 503

 ** ThrottlingException **   
The rate exceeds the limit.    
 ** message **   
The message for the exception.
HTTP Status Code: 400

 ** UnauthorizedException **   
You are not authorized to perform this operation.    
 ** message **   
The message for the exception.
HTTP Status Code: 401

## See Also
<a name="API_UpdateAuthorizer_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/iot-2015-05-28/UpdateAuthorizer) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-2015-05-28/UpdateAuthorizer)