Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Errors See Also

CreateFunction

Creates a CloudFront function.

To create a function, you provide the function code and some configuration information about the function. The response contains an Amazon Resource Name (ARN) that uniquely identifies the function.

When you create a function, it's in the DEVELOPMENT stage. In this stage, you can test the function with TestFunction, and update it with UpdateFunction.

When you're ready to use your function with a CloudFront distribution, use PublishFunction to copy the function from the DEVELOPMENT stage to LIVE. When it's live, you can attach the function to a distribution's cache behavior, using the function's ARN.

Request Syntax


POST /2020-05-31/function HTTP/1.1
<?xml version="1.0" encoding="UTF-8"?>
<CreateFunctionRequest xmlns="http://cloudfront.amazonaws.com/doc/2020-05-31/">
   <FunctionCode>blob</FunctionCode>
   <FunctionConfig>
      <Comment>string</Comment>
      <KeyValueStoreAssociations>
         <Items>
            <KeyValueStoreAssociation>
               <KeyValueStoreARN>string</KeyValueStoreARN>
            </KeyValueStoreAssociation>
         </Items>
         <Quantity>integer</Quantity>
      </KeyValueStoreAssociations>
      <Runtime>string</Runtime>
   </FunctionConfig>
   <Name>string</Name>
</CreateFunctionRequest>

URI Request Parameters

The request does not use any URI parameters.

Request Body

The request accepts the following data in XML format.

CreateFunctionRequest

Root level tag for the CreateFunctionRequest parameters.

Required: Yes

FunctionCode

The function code. For more information about writing a CloudFront function, see Writing function code for CloudFront Functions in the Amazon CloudFront Developer Guide.

Type: Base64-encoded binary data object

Length Constraints: Minimum length of 1. Maximum length of 40960.

Required: Yes

FunctionConfig

Configuration information about the function, including an optional comment and the function's runtime.

Type: FunctionConfig object

Required: Yes

Name

A name to identify the function.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: [a-zA-Z0-9-_]{1,64}

Required: Yes

Response Syntax


HTTP/1.1 201
<?xml version="1.0" encoding="UTF-8"?>
<FunctionSummary>
   <FunctionConfig>
      <Comment>string</Comment>
      <KeyValueStoreAssociations>
         <Items>
            <KeyValueStoreAssociation>
               <KeyValueStoreARN>string</KeyValueStoreARN>
            </KeyValueStoreAssociation>
         </Items>
         <Quantity>integer</Quantity>
      </KeyValueStoreAssociations>
      <Runtime>string</Runtime>
   </FunctionConfig>
   <FunctionMetadata>
      <CreatedTime>timestamp</CreatedTime>
      <FunctionARN>string</FunctionARN>
      <LastModifiedTime>timestamp</LastModifiedTime>
      <Stage>string</Stage>
   </FunctionMetadata>
   <Name>string</Name>
   <Status>string</Status>
</FunctionSummary>

Response Elements

If the action is successful, the service sends back an HTTP 201 response.

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

FunctionSummary

Root level tag for the FunctionSummary parameters.

Required: Yes

FunctionConfig

Contains configuration information about a CloudFront function.

Type: FunctionConfig object

FunctionMetadata

Contains metadata about a CloudFront function.

Type: FunctionMetadata object

Name

The name of the CloudFront function.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: [a-zA-Z0-9-_]{1,64}

Status

The status of the CloudFront function.

Type: String

Errors

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

FunctionAlreadyExists

A function with the same name already exists in this AWS account. To create a function, you must provide a unique name. To update an existing function, use UpdateFunction.

HTTP Status Code: 409

FunctionSizeLimitExceeded

The function is too large. For more information, see Quotas (formerly known as limits) in the Amazon CloudFront Developer Guide.

HTTP Status Code: 413

InvalidArgument

An argument is invalid.

HTTP Status Code: 400

TooManyFunctions

You have reached the maximum number of CloudFront functions for this AWS account. For more information, see Quotas (formerly known as limits) in the Amazon CloudFront Developer Guide.

HTTP Status Code: 400

UnsupportedOperation

This operation is not supported in this region.

HTTP Status Code: 400