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@ -0,0 +1,398 @@
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#!/usr/bin/python
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: lambda_info
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short_description: Gathers AWS Lambda function details
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description:
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- Gathers various details related to Lambda functions, including aliases, versions and event source mappings.
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Use module M(lambda) to manage the lambda function itself, M(lambda_alias) to manage function aliases and
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M(lambda_event) to manage lambda event source mappings.
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version_added: "2.9"
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options:
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query:
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description:
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- Specifies the resource type for which to gather information. Leave blank to retrieve all information.
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required: true
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choices: [ "aliases", "all", "config", "mappings", "policy", "versions" ]
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default: "all"
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function_name:
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description:
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- The name of the lambda function for which information is requested.
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aliases: [ "function", "name"]
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event_source_arn:
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description:
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- For query type 'mappings', this is the Amazon Resource Name (ARN) of the Amazon Kinesis or DynamoDB stream.
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author: Pierre Jodouin (@pjodouin)
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requirements:
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- boto3
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extends_documentation_fragment:
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- aws
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- ec2
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'''
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EXAMPLES = '''
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---
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# Simple example of listing all info for a function
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- name: List all for a specific function
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lambda_info:
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query: all
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function_name: myFunction
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register: my_function_details
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# List all versions of a function
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- name: List function versions
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lambda_info:
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query: versions
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function_name: myFunction
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register: my_function_versions
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# List all lambda function versions
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- name: List all function
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lambda_info:
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query: all
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max_items: 20
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register: output
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- name: show Lambda information
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debug:
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msg: "{{ output['function'] }}"
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'''
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RETURN = '''
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---
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function:
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description: lambda function list
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returned: success
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type: dict
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function.TheName:
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description: lambda function information, including event, mapping, and version information
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returned: success
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type: dict
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'''
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from ansible.module_utils.aws.core import AnsibleAWSModule
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from ansible.module_utils.ec2 import camel_dict_to_snake_dict, get_aws_connection_info, boto3_conn
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import json
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import datetime
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import sys
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import re
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try:
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from botocore.exceptions import ClientError
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except ImportError:
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pass # protected by AnsibleAWSModule
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def fix_return(node):
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"""
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fixup returned dictionary
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:param node:
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:return:
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"""
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if isinstance(node, datetime.datetime):
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node_value = str(node)
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elif isinstance(node, list):
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node_value = [fix_return(item) for item in node]
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elif isinstance(node, dict):
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node_value = dict([(item, fix_return(node[item])) for item in node.keys()])
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else:
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node_value = node
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return node_value
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def alias_details(client, module):
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"""
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Returns list of aliases for a specified function.
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:param client: AWS API client reference (boto3)
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:param module: Ansible module reference
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:return dict:
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"""
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lambda_info = dict()
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function_name = module.params.get('function_name')
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if function_name:
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params = dict()
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if module.params.get('max_items'):
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params['MaxItems'] = module.params.get('max_items')
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if module.params.get('next_marker'):
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params['Marker'] = module.params.get('next_marker')
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try:
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lambda_info.update(aliases=client.list_aliases(FunctionName=function_name, **params)['Aliases'])
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except ClientError as e:
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if e.response['Error']['Code'] == 'ResourceNotFoundException':
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lambda_info.update(aliases=[])
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else:
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module.fail_json_aws(e, msg="Trying to get aliases")
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else:
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module.fail_json(msg='Parameter function_name required for query=aliases.')
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return {function_name: camel_dict_to_snake_dict(lambda_info)}
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def all_details(client, module):
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"""
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Returns all lambda related facts.
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:param client: AWS API client reference (boto3)
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:param module: Ansible module reference
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:return dict:
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"""
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if module.params.get('max_items') or module.params.get('next_marker'):
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module.fail_json(msg='Cannot specify max_items nor next_marker for query=all.')
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lambda_info = dict()
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function_name = module.params.get('function_name')
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if function_name:
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lambda_info[function_name] = {}
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lambda_info[function_name].update(config_details(client, module)[function_name])
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lambda_info[function_name].update(alias_details(client, module)[function_name])
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lambda_info[function_name].update(policy_details(client, module)[function_name])
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lambda_info[function_name].update(version_details(client, module)[function_name])
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lambda_info[function_name].update(mapping_details(client, module)[function_name])
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else:
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lambda_info.update(config_details(client, module))
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return lambda_info
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def config_details(client, module):
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"""
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Returns configuration details for one or all lambda functions.
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:param client: AWS API client reference (boto3)
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:param module: Ansible module reference
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:return dict:
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"""
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lambda_info = dict()
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function_name = module.params.get('function_name')
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if function_name:
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try:
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lambda_info.update(client.get_function_configuration(FunctionName=function_name))
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except ClientError as e:
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if e.response['Error']['Code'] == 'ResourceNotFoundException':
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lambda_info.update(function={})
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else:
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module.fail_json_aws(e, msg="Trying to get {0} configuration".format(function_name))
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else:
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params = dict()
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if module.params.get('max_items'):
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params['MaxItems'] = module.params.get('max_items')
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if module.params.get('next_marker'):
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params['Marker'] = module.params.get('next_marker')
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try:
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lambda_info.update(function_list=client.list_functions(**params)['Functions'])
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except ClientError as e:
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if e.response['Error']['Code'] == 'ResourceNotFoundException':
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lambda_info.update(function_list=[])
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else:
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module.fail_json_aws(e, msg="Trying to get function list")
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functions = dict()
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for func in lambda_info.pop('function_list', []):
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functions[func['FunctionName']] = camel_dict_to_snake_dict(func)
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return functions
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return {function_name: camel_dict_to_snake_dict(lambda_info)}
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def mapping_details(client, module):
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"""
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Returns all lambda event source mappings.
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:param client: AWS API client reference (boto3)
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:param module: Ansible module reference
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:return dict:
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"""
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lambda_info = dict()
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params = dict()
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function_name = module.params.get('function_name')
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if function_name:
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params['FunctionName'] = module.params.get('function_name')
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if module.params.get('event_source_arn'):
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params['EventSourceArn'] = module.params.get('event_source_arn')
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if module.params.get('max_items'):
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params['MaxItems'] = module.params.get('max_items')
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if module.params.get('next_marker'):
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params['Marker'] = module.params.get('next_marker')
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try:
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lambda_info.update(mappings=client.list_event_source_mappings(**params)['EventSourceMappings'])
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except ClientError as e:
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if e.response['Error']['Code'] == 'ResourceNotFoundException':
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lambda_info.update(mappings=[])
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else:
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module.fail_json_aws(e, msg="Trying to get source event mappings")
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if function_name:
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return {function_name: camel_dict_to_snake_dict(lambda_info)}
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return camel_dict_to_snake_dict(lambda_info)
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def policy_details(client, module):
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"""
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Returns policy attached to a lambda function.
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:param client: AWS API client reference (boto3)
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:param module: Ansible module reference
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:return dict:
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"""
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if module.params.get('max_items') or module.params.get('next_marker'):
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module.fail_json(msg='Cannot specify max_items nor next_marker for query=policy.')
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lambda_info = dict()
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function_name = module.params.get('function_name')
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if function_name:
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try:
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# get_policy returns a JSON string so must convert to dict before reassigning to its key
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lambda_info.update(policy=json.loads(client.get_policy(FunctionName=function_name)['Policy']))
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except ClientError as e:
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if e.response['Error']['Code'] == 'ResourceNotFoundException':
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lambda_info.update(policy={})
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else:
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module.fail_json_aws(e, msg="Trying to get {0} policy".format(function_name))
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else:
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module.fail_json(msg='Parameter function_name required for query=policy.')
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return {function_name: camel_dict_to_snake_dict(lambda_info)}
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def version_details(client, module):
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"""
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Returns all lambda function versions.
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:param client: AWS API client reference (boto3)
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:param module: Ansible module reference
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:return dict:
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"""
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lambda_info = dict()
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function_name = module.params.get('function_name')
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if function_name:
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params = dict()
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if module.params.get('max_items'):
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params['MaxItems'] = module.params.get('max_items')
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if module.params.get('next_marker'):
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params['Marker'] = module.params.get('next_marker')
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try:
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lambda_info.update(versions=client.list_versions_by_function(FunctionName=function_name, **params)['Versions'])
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except ClientError as e:
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if e.response['Error']['Code'] == 'ResourceNotFoundException':
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lambda_info.update(versions=[])
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else:
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module.fail_json_aws(e, msg="Trying to get {0} versions".format(function_name))
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else:
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module.fail_json(msg='Parameter function_name required for query=versions.')
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return {function_name: camel_dict_to_snake_dict(lambda_info)}
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def main():
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"""
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Main entry point.
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:return dict: ansible facts
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"""
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argument_spec = dict(
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function_name=dict(required=False, default=None, aliases=['function', 'name']),
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query=dict(required=False, choices=['aliases', 'all', 'config', 'mappings', 'policy', 'versions'], default='all'),
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event_source_arn=dict(required=False, default=None)
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)
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module = AnsibleAWSModule(
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argument_spec=argument_spec,
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supports_check_mode=True,
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mutually_exclusive=[],
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required_together=[]
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)
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# validate function_name if present
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function_name = module.params['function_name']
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if function_name:
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if not re.search(r"^[\w\-:]+$", function_name):
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module.fail_json(
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msg='Function name {0} is invalid. Names must contain only alphanumeric characters and hyphens.'.format(function_name)
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)
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if len(function_name) > 64:
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module.fail_json(msg='Function name "{0}" exceeds 64 character limit'.format(function_name))
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try:
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region, endpoint, aws_connect_kwargs = get_aws_connection_info(module, boto3=True)
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aws_connect_kwargs.update(dict(region=region,
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endpoint=endpoint,
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conn_type='client',
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resource='lambda'
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))
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client = boto3_conn(module, **aws_connect_kwargs)
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except ClientError as e:
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module.fail_json_aws(e, "trying to set up boto connection")
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this_module = sys.modules[__name__]
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invocations = dict(
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aliases='alias_details',
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all='all_details',
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config='config_details',
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mappings='mapping_details',
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policy='policy_details',
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versions='version_details',
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)
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this_module_function = getattr(this_module, invocations[module.params['query']])
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all_facts = fix_return(this_module_function(client, module))
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results = dict(function=all_facts, changed=False)
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if module.check_mode:
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results['msg'] = 'Check mode set but ignored for fact gathering only.'
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module.exit_json(**results)
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if __name__ == '__main__':
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main()
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Felix Fontein
5 years ago
committed by