Documentation

lambda_event - Creates, updates or deletes AWS Lambda function event mappings.

New in version 2.2.

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
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
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
ec2_url
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
(added in 1.6)
Uses a boto profile. Only works with boto >= 2.24.0.
region
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
(added in 1.6)
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
bool

(added in 1.5)
    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 flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

Maintenance

This module is flagged as community which means that it is maintained by the Ansible Community. See Module Maintenance & Support for more info.

For a list of other modules that are also maintained by the Ansible Community, see here.

Author

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

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