execute_lambda – Execute an AWS Lambda function

Synopsis

  • This module executes AWS Lambda functions, allowing synchronous and asynchronous invocation.

Requirements

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

  • boto

  • boto3

  • python >= 2.6

Parameters

Parameter Choices/Defaults Comments
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.
dry_run
boolean
    Choices:
  • no ←
  • yes
Do not *actually* invoke the function. A DryRun call will check that the caller has permissions to call the function, especially for checking cross-account permissions.
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.
function_arn
-
The name of the function to be invoked
name
-
The name of the function to be invoked. This can only be used for invocations within the calling account. To invoke a function in another account, use function_arn to specify the full ARN.
payload
-
Default:
{}
A dictionary in any form to be provided as input to the Lambda function.
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
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
tail_log
boolean
    Choices:
  • no ←
  • yes
If tail_log=yes, the result of the task will include the last 4 KB of the CloudWatch log for the function execution. Log tailing only works if you use synchronous invocation wait=yes. This is usually used for development or testing Lambdas.
validate_certs
boolean
    Choices:
  • no
  • yes ←
When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.
version_qualifier
-
Default:
"LATEST"
Which version/alias of the function to run. This defaults to the LATEST revision, but can be set to any existing version or alias. See
wait
boolean
    Choices:
  • no
  • yes ←
Whether to wait for the function results or not. If wait is no, the task will not return any results. To wait for the Lambda function to complete, set wait=yes and the result will be available in the output key.

Notes

Note

  • Async invocation will always return an empty output key.

  • Synchronous invocation may result in a function timeout, resulting in an empty output key.

  • 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

- execute_lambda:
    name: test-function
    # the payload is automatically serialized and sent to the function
    payload:
      foo: bar
      value: 8
  register: response

# Test that you have sufficient permissions to execute a Lambda function in
# another account
- execute_lambda:
    function_arn: arn:aws:lambda:us-east-1:123456789012:function/some-function
    dry_run: true

- execute_lambda:
    name: test-function
    payload:
      foo: bar
      value: 8
    wait: true
    tail_log: true
  register: response
  # the response will have a `logs` key that will contain a log (up to 4KB) of the function execution in Lambda

# Pass the Lambda event payload as a json file.
- execute_lambda:
    name: test-function
    payload: "{{ lookup('file','lambda_event.json') }}"
  register: response

- execute_lambda:
    name: test-function
    version_qualifier: PRODUCTION

Return Values

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

Key Returned Description
logs
string
if tail_log == true
The last 4KB of the function logs. Only provided if tail_log is true
output
dictionary
success
Function output if wait=true and the function returns a value

Sample:
{ 'output': 'something' }
status
integer
always
StatusCode of API call exit (200 for synchronous invokes, 202 for async)

Sample:
200


Status

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