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

UpdateEventSourceMapping

Updates an event source mapping. You can change the function that AWS Lambda invokes, or pause invocation and resume later from the same location.

For details about how to configure different event sources, see the following topics.

The following error handling options are available only for stream sources (DynamoDB and Kinesis):

BisectBatchOnFunctionError – If the function returns an error, split the batch in two and retry.
DestinationConfig – Send discarded records to an Amazon SQS queue or Amazon SNS topic.
MaximumRecordAgeInSeconds – Discard records older than the specified age. The default value is infinite (-1). When set to infinite (-1), failed records are retried until the record expires
MaximumRetryAttempts – Discard records after the specified number of retries. The default value is infinite (-1). When set to infinite (-1), failed records are retried until the record expires.
ParallelizationFactor – Process multiple batches from each shard concurrently.

For information about which configuration parameters apply to each event source, see the following topics.

Request Syntax


PUT /2015-03-31/event-source-mappings/UUID HTTP/1.1
Content-type: application/json

{
   "BatchSize": number,
   "BisectBatchOnFunctionError": boolean,
   "DestinationConfig": { 
      "OnFailure": { 
         "Destination": "string"
      },
      "OnSuccess": { 
         "Destination": "string"
      }
   },
   "Enabled": boolean,
   "FilterCriteria": { 
      "Filters": [ 
         { 
            "Pattern": "string"
         }
      ]
   },
   "FunctionName": "string",
   "FunctionResponseTypes": [ "string" ],
   "MaximumBatchingWindowInSeconds": number,
   "MaximumRecordAgeInSeconds": number,
   "MaximumRetryAttempts": number,
   "ParallelizationFactor": number,
   "ScalingConfig": { 
      "MaximumConcurrency": number
   },
   "SourceAccessConfigurations": [ 
      { 
         "Type": "string",
         "URI": "string"
      }
   ],
   "TumblingWindowInSeconds": number
}

URI Request Parameters

The request uses the following URI parameters.

UUID

The identifier of the event source mapping.

Required: Yes

Request Body

The request accepts the following data in JSON format.

BatchSize

The maximum number of records in each batch that Lambda pulls from your stream or queue and sends to your function. Lambda passes all of the records in the batch to the function in a single call, up to the payload limit for synchronous invocation (6 MB).

Amazon Kinesis – Default 100. Max 10,000.
Amazon DynamoDB Streams – Default 100. Max 10,000.
Amazon Simple Queue Service – Default 10. For standard queues the max is 10,000. For FIFO queues the max is 10.
Amazon Managed Streaming for Apache Kafka – Default 100. Max 10,000.
Self-managed Apache Kafka – Default 100. Max 10,000.
Amazon MQ (ActiveMQ and RabbitMQ) – Default 100. Max 10,000.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 10000.

Required: No

BisectBatchOnFunctionError

(Streams only) If the function returns an error, split the batch in two and retry.

Type: Boolean

Required: No

DestinationConfig

(Streams only) An Amazon SQS queue or Amazon SNS topic destination for discarded records.

Type: DestinationConfig object

Required: No

Enabled

When true, the event source mapping is active. When false, Lambda pauses polling and invocation.

Default: True

Type: Boolean

Required: No

FilterCriteria

An object that defines the filter criteria that determine whether Lambda should process an event. For more information, see Lambda event filtering.

Type: FilterCriteria object

Required: No

FunctionName

The name of the Lambda function.

Name formats

Function name – MyFunction.
Function ARN – arn:aws:lambda:us-west-2:123456789012:function:MyFunction.
Version or Alias ARN – arn:aws:lambda:us-west-2:123456789012:function:MyFunction:PROD.
Partial ARN – 123456789012:function:MyFunction.

The length constraint applies only to the full ARN. If you specify only the function name, it's limited to 64 characters in length.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 140.

Pattern: (arn:(aws[a-zA-Z-]*)?:lambda:)?([a-z]{2}(-gov)?-[a-z]+-\d{1}:)?(\d{12}:)?(function:)?([a-zA-Z0-9-_]+)(:(\$LATEST|[a-zA-Z0-9-_]+))?

Required: No

FunctionResponseTypes

(Streams and Amazon SQS) A list of current response type enums applied to the event source mapping.

Type: Array of strings

Array Members: Minimum number of 0 items. Maximum number of 1 item.

Valid Values: ReportBatchItemFailures

Required: No

MaximumBatchingWindowInSeconds

The maximum amount of time, in seconds, that Lambda spends gathering records before invoking the function. You can configure MaximumBatchingWindowInSeconds to any value from 0 seconds to 300 seconds in increments of seconds.

For streams and Amazon SQS event sources, the default batching window is 0 seconds. For Amazon MSK, Self-managed Apache Kafka, and Amazon MQ event sources, the default batching window is 500 ms. Note that because you can only change MaximumBatchingWindowInSeconds in increments of seconds, you cannot revert back to the 500 ms default batching window after you have changed it. To restore the default batching window, you must create a new event source mapping.

Related setting: For streams and Amazon SQS event sources, when you set BatchSize to a value greater than 10, you must set MaximumBatchingWindowInSeconds to at least 1.

Type: Integer

Valid Range: Minimum value of 0. Maximum value of 300.

Required: No

MaximumRecordAgeInSeconds

(Streams only) Discard records older than the specified age. The default value is infinite (-1).

Type: Integer

Valid Range: Minimum value of -1. Maximum value of 604800.

Required: No

MaximumRetryAttempts

(Streams only) Discard records after the specified number of retries. The default value is infinite (-1). When set to infinite (-1), failed records are retried until the record expires.

Type: Integer

Valid Range: Minimum value of -1. Maximum value of 10000.

Required: No

ParallelizationFactor

(Streams only) The number of batches to process from each shard concurrently.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 10.

Required: No

ScalingConfig

(Amazon SQS only) The scaling configuration for the event source. For more information, see Configuring maximum concurrency for Amazon SQS event sources.

Type: ScalingConfig object

Required: No

SourceAccessConfigurations

An array of authentication protocols or VPC components required to secure your event source.

Type: Array of SourceAccessConfiguration objects

Array Members: Minimum number of 0 items. Maximum number of 22 items.

Required: No

TumblingWindowInSeconds

(Streams only) The duration in seconds of a processing window. The range is between 1 second and 900 seconds.

Type: Integer

Valid Range: Minimum value of 0. Maximum value of 900.

Required: No

Response Syntax


HTTP/1.1 202
Content-type: application/json

{
   "AmazonManagedKafkaEventSourceConfig": { 
      "ConsumerGroupId": "string"
   },
   "BatchSize": number,
   "BisectBatchOnFunctionError": boolean,
   "DestinationConfig": { 
      "OnFailure": { 
         "Destination": "string"
      },
      "OnSuccess": { 
         "Destination": "string"
      }
   },
   "EventSourceArn": "string",
   "FilterCriteria": { 
      "Filters": [ 
         { 
            "Pattern": "string"
         }
      ]
   },
   "FunctionArn": "string",
   "FunctionResponseTypes": [ "string" ],
   "LastModified": number,
   "LastProcessingResult": "string",
   "MaximumBatchingWindowInSeconds": number,
   "MaximumRecordAgeInSeconds": number,
   "MaximumRetryAttempts": number,
   "ParallelizationFactor": number,
   "Queues": [ "string" ],
   "ScalingConfig": { 
      "MaximumConcurrency": number
   },
   "SelfManagedEventSource": { 
      "Endpoints": { 
         "string" : [ "string" ]
      }
   },
   "SelfManagedKafkaEventSourceConfig": { 
      "ConsumerGroupId": "string"
   },
   "SourceAccessConfigurations": [ 
      { 
         "Type": "string",
         "URI": "string"
      }
   ],
   "StartingPosition": "string",
   "StartingPositionTimestamp": number,
   "State": "string",
   "StateTransitionReason": "string",
   "Topics": [ "string" ],
   "TumblingWindowInSeconds": number,
   "UUID": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 202 response.

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

AmazonManagedKafkaEventSourceConfig

Specific configuration settings for an Amazon Managed Streaming for Apache Kafka (Amazon MSK) event source.

Type: AmazonManagedKafkaEventSourceConfig object

BatchSize

Default value: Varies by service. For Amazon SQS, the default is 10. For all other services, the default is 100.

Related setting: When you set BatchSize to a value greater than 10, you must set MaximumBatchingWindowInSeconds to at least 1.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 10000.

BisectBatchOnFunctionError

(Streams only) If the function returns an error, split the batch in two and retry. The default value is false.

Type: Boolean

DestinationConfig

(Streams only) An Amazon SQS queue or Amazon SNS topic destination for discarded records.

Type: DestinationConfig object

EventSourceArn

The Amazon Resource Name (ARN) of the event source.

Type: String

Pattern: arn:(aws[a-zA-Z0-9-]*):([a-zA-Z0-9\-])+:([a-z]{2}(-gov)?-[a-z]+-\d{1})?:(\d{12})?:(.*)

FilterCriteria

An object that defines the filter criteria that determine whether Lambda should process an event. For more information, see Lambda event filtering.

Type: FilterCriteria object

FunctionArn

The ARN of the Lambda function.

Type: String

Pattern: arn:(aws[a-zA-Z-]*)?:lambda:[a-z]{2}(-gov)?-[a-z]+-\d{1}:\d{12}:function:[a-zA-Z0-9-_]+(:(\$LATEST|[a-zA-Z0-9-_]+))?

FunctionResponseTypes

(Streams and Amazon SQS) A list of current response type enums applied to the event source mapping.

Type: Array of strings

Array Members: Minimum number of 0 items. Maximum number of 1 item.

Valid Values: ReportBatchItemFailures

LastModified

The date that the event source mapping was last updated or that its state changed, in Unix time seconds.

Type: Timestamp

LastProcessingResult

The result of the last Lambda invocation of your function.

Type: String

MaximumBatchingWindowInSeconds

Related setting: For streams and Amazon SQS event sources, when you set BatchSize to a value greater than 10, you must set MaximumBatchingWindowInSeconds to at least 1.

Type: Integer

Valid Range: Minimum value of 0. Maximum value of 300.

MaximumRecordAgeInSeconds

(Streams only) Discard records older than the specified age. The default value is -1, which sets the maximum age to infinite. When the value is set to infinite, Lambda never discards old records.

Type: Integer

Valid Range: Minimum value of -1. Maximum value of 604800.

MaximumRetryAttempts

(Streams only) Discard records after the specified number of retries. The default value is -1, which sets the maximum number of retries to infinite. When MaximumRetryAttempts is infinite, Lambda retries failed records until the record expires in the event source.

Type: Integer

Valid Range: Minimum value of -1. Maximum value of 10000.

ParallelizationFactor

(Streams only) The number of batches to process concurrently from each shard. The default value is 1.

Type: Integer

Valid Range: Minimum value of 1. Maximum value of 10.

Queues

(Amazon MQ) The name of the Amazon MQ broker destination queue to consume.

Type: Array of strings

Array Members: Fixed number of 1 item.

Length Constraints: Minimum length of 1. Maximum length of 1000.

Pattern: [\s\S]*

ScalingConfig

(Amazon SQS only) The scaling configuration for the event source. For more information, see Configuring maximum concurrency for Amazon SQS event sources.

Type: ScalingConfig object

SelfManagedEventSource

The self-managed Apache Kafka cluster for your event source.

Type: SelfManagedEventSource object

SelfManagedKafkaEventSourceConfig

Specific configuration settings for a self-managed Apache Kafka event source.

Type: SelfManagedKafkaEventSourceConfig object

SourceAccessConfigurations

An array of the authentication protocol, VPC components, or virtual host to secure and define your event source.

Type: Array of SourceAccessConfiguration objects

Array Members: Minimum number of 0 items. Maximum number of 22 items.

StartingPosition

The position in a stream from which to start reading. Required for Amazon Kinesis, Amazon DynamoDB, and Amazon MSK stream sources. AT_TIMESTAMP is supported only for Amazon Kinesis streams.

Type: String

Valid Values: TRIM_HORIZON | LATEST | AT_TIMESTAMP

StartingPositionTimestamp

With StartingPosition set to AT_TIMESTAMP, the time from which to start reading, in Unix time seconds.

Type: Timestamp

State

The state of the event source mapping. It can be one of the following: Creating, Enabling, Enabled, Disabling, Disabled, Updating, or Deleting.

Type: String

StateTransitionReason

Indicates whether a user or Lambda made the last change to the event source mapping.

Type: String

Topics

The name of the Kafka topic.

Type: Array of strings

Array Members: Fixed number of 1 item.

Length Constraints: Minimum length of 1. Maximum length of 249.

Pattern: ^[^.]([a-zA-Z0-9\-_.]+)

TumblingWindowInSeconds

(Streams only) The duration in seconds of a processing window. The range is 1–900 seconds.

Type: Integer

Valid Range: Minimum value of 0. Maximum value of 900.

UUID

The identifier of the event source mapping.

Type: String

Errors

InvalidParameterValueException

One of the parameters in the request is not valid.

HTTP Status Code: 400

ResourceConflictException

The resource already exists, or another operation is in progress.

HTTP Status Code: 409

ResourceInUseException

The operation conflicts with the resource's availability. For example, you tried to update an event source mapping in the CREATING state, or you tried to delete an event source mapping currently UPDATING.

HTTP Status Code: 400

ResourceNotFoundException

The resource specified in the request does not exist.

HTTP Status Code: 404

ServiceException

The AWS Lambda service encountered an internal error.

HTTP Status Code: 500

TooManyRequestsException

The request throughput limit was exceeded. For more information, see Lambda quotas.

HTTP Status Code: 429