# lambda_event – Creates, updates or deletes AWS Lambda function event mappings

- Synopsis
- Requirements
- Parameters
- Notes
- Examples
- Return Values
- Status

## Synopsis

- This module allows the management of AWS Lambda function event source mappings such as DynamoDB and Kinesis stream events via the Ansible framework. These event source mappings are relevant only in the AWS Lambda pull model, where AWS Lambda invokes the function. It is idempotent and supports “Check” mode. Use module lambda to manage the lambda function itself and lambda_alias to manage function aliases.

## Requirements

The below requirements are needed on the host that executes this module.

- boto
- boto3
- python >= 2.6

## Parameters

Parameter | Choices/Defaults | Comments
--- | --- | ---
alias - / required |  | Name of the function alias. Mutually exclusive with `version`.
aws_access_key string |  | AWS access key. If not set then the value of the AWS_ACCESS_KEY_ID, AWS_ACCESS_KEY or EC2_ACCESS_KEY environment variable is used. aliases: ec2_access_key, access_key
aws_secret_key string |  | AWS secret key. If not set then the value of the AWS_SECRET_ACCESS_KEY, AWS_SECRET_KEY, or EC2_SECRET_KEY environment variable is used. aliases: ec2_secret_key, secret_key

debug_botocore_endpoint_logs
boolean
added in 2.8

Choices:
- no ←
- yes

Use a botocore.endpoint logger to parse the unique (rather than total) "resource:action" API calls made during a task, outputing the set to the resource_actions key in the task results. Use the aws_resource_action callback to output to total list made during a playbook. The ANSIBLE_DEBUG_BOTOCORE_LOGS environment variable may also be used.

ec2_url string |  | Url to use to connect to EC2 or your Eucalyptus cloud (by default the module will use EC2 endpoints). Ignored for modules where region is required. Must be specified for all other modules if region is not used. If not set then the value of the EC2_URL environment variable, if any, is used.

event_source
-

Choices:
- stream ←
- sqs

Source of the event that triggers the lambda function.
For DynamoDB and Kinesis events, select 'stream'
For SQS queues, select 'sqs'

lambda_function_arn - / required |  | The name or ARN of the lambda function. aliases: function_name, function_arn
profile string |  | Uses a boto profile. Only works with boto >= 2.24.0.
region string |  | The AWS region to use. If not specified then the value of the AWS_REGION or EC2_REGION environment variable, if any, is used. See http://docs.aws.amazon.com/general/latest/gr/rande.html#ec2_region aliases: aws_region, ec2_region
security_token string |  | AWS STS security token. If not set then the value of the AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN environment variable is used. aliases: access_token

source_params
- / required

Sub-parameters required for event source.
== stream event source ==
`source_arn` The Amazon Resource Name (ARN) of the Kinesis or DynamoDB stream that is the event source.
`enabled` Indicates whether AWS Lambda should begin polling the event source. Default is True.
`batch_size` The largest number of records that AWS Lambda will retrieve from your event source at the time of invoking your function. Default is 100.
`starting_position` The position in the stream where AWS Lambda should start reading. Choices are TRIM_HORIZON or LATEST.
== sqs event source ==
`source_arn` The Amazon Resource Name (ARN) of the SQS queue to read events from.
`enabled` Indicates whether AWS Lambda should begin reading from the event source. Default is True.
`batch_size` The largest number of records that AWS Lambda will retrieve from your event source at the time of invoking your function. Default is 100.

state
- / required

Choices:
- present ←
- absent

Describes the desired state.

validate_certs
boolean

Choices:
- no
- yes ←

When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.

version - |  | Version of the Lambda function. Mutually exclusive with `alias`.

## Notes

Note

- If parameters are not set within the module, the following environment variables can be used in decreasing order of precedence `AWS_URL` or `EC2_URL`, `AWS_ACCESS_KEY_ID` or `AWS_ACCESS_KEY` or `EC2_ACCESS_KEY`, `AWS_SECRET_ACCESS_KEY` or `AWS_SECRET_KEY` or `EC2_SECRET_KEY`, `AWS_SECURITY_TOKEN` or `EC2_SECURITY_TOKEN`, `AWS_REGION` or `EC2_REGION`
- Ansible uses the boto configuration file (typically ~/.boto) if no credentials are provided. See https://boto.readthedocs.io/en/latest/boto_config_tut.html
- `AWS_REGION` or `EC2_REGION` can be typically be used to specify the AWS region, when required, but this can also be configured in the boto config file

## Examples

    ---
    # Example that creates a lambda event notification for a DynamoDB stream
    - hosts: localhost
      gather_facts: no
      vars:
        state: present
      tasks:
      - name: DynamoDB stream event mapping
        lambda_event:
          state: "{{ state | default('present') }}"
          event_source: stream
          function_name: "{{ function_name }}"
          alias: Dev
          source_params:
            source_arn: arn:aws:dynamodb:us-east-1:123456789012:table/tableName/stream/2016-03-19T19:51:37.457
            enabled: True
            batch_size: 100
            starting_position: TRIM_HORIZON

      - name: Show source event
        debug:
          var: lambda_stream_events

## Return Values

Common return values are documented here, the following are the fields unique to this module:

Key | Returned | Description
--- | --- | ---
lambda_stream_events list | success | list of dictionaries returned by the API describing stream event mappings

## Status

- This module is not guaranteed to have a backwards compatible interface. [preview]
- This module is maintained by the Ansible Community. [community]

### Authors

- Pierre Jodouin (@pjodouin), Ryan Brown (@ryansb)

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