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ansible-lambda's Introduction

Ansible Cloud Modules & Plugins for AWS Lambda

Version 0.7 Build Status

These modules help manage AWS Lambda resources including code, configuration, aliases, versions, policy statements and event source mappings, including DynamoDB and Kinesis streams. A lookup plugin is also included which allows looking up values via a Lambda function.

Note: I've cancelled the PR for these modules to be included in ansible-module-extras as it was much too time consuming. I will continue to maintain them here.

Requirements

  • python >= 2.6
  • ansible >= 2.0
  • boto3 >= 1.2.3
  • importlib (only for running tests on < python 2.7)

Modules

lambda_facts:

Gathers facts related to AWS Lambda functions.

Example Command

> ansible localhost -m lambda_facts

Example Playbook
# Simple example of listing all info for a function
- name: List all for a specific function
  lambda_facts:
    query: all
    function_name: myFunction
  register: my_function_details
# List all versions of a function
- name: List function versions
  lambda_facts:
    query: versions
    function_name: myFunction
  register: my_function_versions
- name: show Lambda facts
  debug: var=Versions

lambda:

Use to create, update or delete lambda functions and publish versions.

Example Playbook
- hosts: localhost
  gather_facts: no
  vars:
    state: present
    project_folder: /path/to/deployment/package
    deployment_package: lambda.zip
    account: 123456789012
    version_to_delete: 0
  tasks:
  - name: AWS Lambda Function
    lambda:
      state: "{{ state | default('present') }}"
      name: myLambdaFuntion
      publish: True
      description: lambda funtion description
      code_s3_bucket: package-bucket
      code_s3_key: "lambda/{{ deployment_package }}"
      local_path: "{{ project_folder }}/{{ deployment_package }}"
      runtime: python2.7
      timeout: 5
      handler: lambda.handler
      memory_size: 128
      role: "arn:aws:iam::{{ account }}:role/API2LambdaExecRole"
      version: "{{ version_to_delete }}"
      vpc_subnet_ids:
        - subnet-9993085c
        - subnet-99910cc3
      vpc_security_group_ids:
        - sg-999b9ca8
  - name: show results
    debug: var=lambda_facts

lambda_alias:

Use to create, update or delete lambda function aliases.

Example Playbook
- hosts: localhost
  gather_facts: no
  vars:
    state: present
    project_folder: /path/to/deployment/package
    deployment_package: lambda.zip
    account: 123456789012
  tasks:
  - name: AWS Lambda Function
    lambda:
      state: "{{ state | default('present') }}"
      name: myLambdaFuntion
      publish: True
      description: lambda funtion description
      code_s3_bucket: package-bucket
      code_s3_key: "lambda/{{ deployment_package }}"
      local_path: "{{ project_folder }}/{{ deployment_package }}"
      runtime: python2.7
      timeout: 5
      handler: lambda.handler
      memory_size: 128
      role: API2LambdaExecRole
  # The following will set the Dev alias to the latest version ($LATEST) since version is omitted (or = 0)
  - name: "alias 'Dev' for function {{ lambda_facts.FunctionName }} "
    lambda_alias:
      state: "{{ state | default('present') }}"
      function_name: "{{ lambda_facts.FunctionName }}"
      name: Dev
      description: Development is $LATEST version

  # The QA alias will only be created when a new version is published (i.e. not = '$LATEST')
  - name: "alias 'QA' for function {{ lambda_facts.FunctionName }} "
    lambda_alias:
      state: "{{ state | default('present') }}"
      function_name: "{{ lambda_facts.FunctionName }}"
      name: QA
      version: "{{ lambda_facts.Version }}"
      description: "QA is version {{ lambda_facts.Version }}"
    when: lambda_facts.Version != "$LATEST"

lambda_event:

Use to create, update or delete lambda function source event mappings, which include Kinesis and DynamoDB streams. Note: The handling of "push model" events such as S3 events and SNS topics has been removed and should have their own modules eventually. Until then, the orginal lambda_event module can be found here.

Example Playbook
- 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: 120
        starting_position: TRIM_HORIZON

  - name: show source event config
    debug: var=lambda_stream_events

lambda_policy

This module allows the management of AWS Lambda policy statements. It is idempotent and supports "Check" mode.

Example Playbook
- hosts: localhost
  gather_facts: no
  vars:
    state: present
  tasks:
  - name: Lambda policy for S3 event notifications
    lambda_policy:
      state: "{{ state | default('present') }}"
      function_name: functionName
      alias: Dev
      statement_id: lambda-s3-myBucket-create-data-log
      action: lambda:InvokeFunction
      principal: s3.amazonaws.com
      source_arn: arn:aws:s3:eu-central-1:123456789012:bucketName
      source_account: 123456789012
#      event_source_token:

lambda_invoke:

Use to invoke a specific Lambda function.

Example Command

> ansible localhost -m lambda_invoke -a"function_name=myFunction"

Plugins

lambda (lookup):

Returns value(s) by invoking a lambda function.

Example Playbook
# Simple example of using a value returned by a lambda function invocation
- hosts: localhost
  gather_facts: no
  vars:
    state: absent
    lambda_output: "{{ lookup('lambda', 'myFunction') }}"
  tasks:
  - name: Test lookup plugin
    debug: var=lambda_output

Installation

Do the following to install the lambda modules in your Ansible environment:

  1. Clone this repository or download the ZIP file.

  2. Copy the *.py files from the modules directory to your installation custom module directory. This is, by default, in ./library which is relative to where your playbooks are located. Refer to the docs for more information.

  3. Copy the *.py files from the plugins directory to your installation custom plugin directory. Custom plugins will go in a directory relating to the plugin type, e.g. a lookup plugin will got into ./lookup_plugins relative to where your playbooks are located. Refer to the docs for more information.

  4. Make sure boto3 is installed.

ansible-lambda's People

Contributors

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Watchers

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