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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright: Contributors to the Ansible project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
DOCUMENTATION = r"""
---
module: lambda_info
version_added: 5.0.0
short_description: Gathers AWS Lambda function details
description:
- Gathers various details related to Lambda functions, including aliases, versions and event source mappings.
- Use module M(amazon.aws.lambda) to manage the lambda function itself, M(amazon.aws.lambda_alias) to manage function aliases,
M(amazon.aws.lambda_event) to manage lambda event source mappings, and M(amazon.aws.lambda_policy) to manage policy statements.
- This module was originally added to C(community.aws) in release 1.0.0.
options:
query:
description:
- Specifies the resource type for which to gather information.
- Defaults to C(all) when I(function_name) is specified.
- Defaults to C(config) when I(function_name) is NOT specified.
choices: [ "aliases", "all", "config", "mappings", "policy", "versions", "tags" ]
type: str
function_name:
description:
- The name of the lambda function for which information is requested.
aliases: [ "function", "name"]
type: str
event_source_arn:
description:
- When I(query=mappings), this is the Amazon Resource Name (ARN) of the Amazon Kinesis or DynamoDB stream.
type: str
author:
- Pierre Jodouin (@pjodouin)
extends_documentation_fragment:
- amazon.aws.common.modules
- amazon.aws.region.modules
- amazon.aws.boto3
"""
EXAMPLES = r"""
---
# Simple example of listing all info for a function
- name: List all for a specific function
amazon.aws.lambda_info:
query: all
function_name: myFunction
register: my_function_details
# List all versions of a function
- name: List function versions
amazon.aws.lambda_info:
query: versions
function_name: myFunction
register: my_function_versions
# List all info for all functions
- name: List all functions
amazon.aws.lambda_info:
query: all
register: output
- name: show Lambda information
ansible.builtin.debug:
msg: "{{ output['function'] }}"
"""
RETURN = r"""
---
function:
description:
- lambda function list.
- C(function) has been deprecated in will be removed in the next major release after 2025-01-01.
returned: success
type: dict
function.TheName:
description:
- lambda function information, including event, mapping, and version information.
- C(function) has been deprecated in will be removed in the next major release after 2025-01-01.
returned: success
type: dict
functions:
description: List of information for each lambda function matching the query.
returned: always
type: list
elements: dict
version_added: 4.1.0
version_added_collection: community.aws
contains:
aliases:
description: The aliases associated with the function.
returned: when C(query) is I(aliases) or I(all)
type: list
elements: str
architectures:
description: The architectures supported by the function.
returned: success
type: list
elements: str
sample: ['arm64']
code_sha256:
description: The SHA256 hash of the function's deployment package.
returned: success
type: str
sample: 'zOAGfF5JLFuzZoSNirUtOrQp+S341IOA3BcoXXoaIaU='
code_size:
description: The size of the function's deployment package in bytes.
returned: success
type: int
sample: 123
dead_letter_config:
description: The function's dead letter queue.
returned: when the function has a dead letter queue configured
type: dict
sample: { 'target_arn': arn:aws:lambda:us-east-1:123456789012:function:myFunction:1 }
contains:
target_arn:
description: The ARN of an SQS queue or SNS topic.
returned: when the function has a dead letter queue configured
type: str
sample: arn:aws:lambda:us-east-1:123456789012:function:myFunction:1
description:
description: The function's description.
returned: success
type: str
sample: 'My function'
environment:
description: The function's environment variables.
returned: when environment variables exist
type: dict
contains:
variables:
description: Environment variable key-value pairs.
returned: when environment variables exist
type: dict
sample: {'key': 'value'}
error:
description: Error message for environment variables that could not be applied.
returned: when there is an error applying environment variables
type: dict
contains:
error_code:
description: The error code.
returned: when there is an error applying environment variables
type: str
message:
description: The error message.
returned: when there is an error applying environment variables
type: str
function_arn:
description: The function's Amazon Resource Name (ARN).
returned: on success
type: str
sample: 'arn:aws:lambda:us-east-1:123456789012:function:myFunction:1'
function_name:
description: The function's name.
returned: on success
type: str
sample: 'myFunction'
handler:
description: The function Lambda calls to begin executing your function.
returned: on success
type: str
sample: 'index.handler'
last_modified:
description: The date and time that the function was last updated, in ISO-8601 format (YYYY-MM-DDThh:mm:ssTZD).
returned: on success
type: str
sample: '2017-08-01T00:00:00.000+0000'
mappings:
description: List of configuration information for each event source mapping.
returned: when C(query) is I(all) or I(mappings)
type: list
elements: dict
contains:
uuid:
description: The AWS Lambda assigned opaque identifier for the mapping.
returned: on success
type: str
batch_size:
description: The largest number of records that AWS Lambda will retrieve from the event source at the time of invoking the function.
returned: on success
type: int
event_source_arn:
description: The ARN of the Amazon Kinesis or DyanmoDB stream that is the source of events.
returned: on success
type: str
function_arn:
description: The Lambda function to invoke when AWS Lambda detects an event on the poll-based source.
returned: on success
type: str
last_modified:
description: The UTC time string indicating the last time the event mapping was updated.
returned: on success
type: str
last_processing_result:
description: The result of the last AWS Lambda invocation of your Lambda function.
returned: on success
type: str
state:
description: The state of the event source mapping.
returned: on success
type: str
state_transition_reason:
description: The reason the event source mapping is in its current state.
returned: on success
type: str
memory_size:
description: The memory allocated to the function.
returned: on success
type: int
sample: 128
policy:
description: The policy associated with the function.
returned: when C(query) is I(all) or I(policy)
type: dict
revision_id:
description: The latest updated revision of the function or alias.
returned: on success
type: str
sample: 'a2x9886d-d48a-4a0c-ab64-82abc005x80c'
role:
description: The function's execution role.
returned: on success
type: str
sample: 'arn:aws:iam::123456789012:role/lambda_basic_execution'
runtime:
description: The funtime environment for the Lambda function.
returned: on success
type: str
sample: 'nodejs6.10'
tracing_config:
description: The function's AWS X-Ray tracing configuration.
returned: on success
type: dict
sample: { 'mode': 'Active' }
contains:
mode:
description: The tracing mode.
returned: on success
type: str
sample: 'Active'
timeout:
description: The amount of time that Lambda allows a function to run before terminating it.
returned: on success
type: int
sample: 3
version:
description: The version of the Lambda function.
returned: on success
type: str
sample: '1'
versions:
description: List of Lambda function versions.
returned: when C(query) is I(all) or I(versions)
type: list
elements: dict
vpc_config:
description: The function's networking configuration.
returned: on success
type: dict
sample: {
'security_group_ids': [],
'subnet_ids': [],
'vpc_id': '123'
}
"""
import json
import re
try:
import botocore
except ImportError:
pass # caught by AnsibleAWSModule
from ansible.module_utils.common.dict_transformations import camel_dict_to_snake_dict
from ansible_collections.amazon.aws.plugins.module_utils.botocore import is_boto3_error_code
from ansible_collections.amazon.aws.plugins.module_utils.modules import AnsibleAWSModule
from ansible_collections.amazon.aws.plugins.module_utils.retries import AWSRetry
@AWSRetry.jittered_backoff()
def _paginate(client, function, **params):
paginator = client.get_paginator(function)
return paginator.paginate(**params).build_full_result()
def alias_details(client, module, function_name):
"""
Returns list of aliases for a specified function.
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
:param function_name (str): Name of Lambda function to query
:return dict:
"""
lambda_info = dict()
try:
lambda_info.update(aliases=_paginate(client, "list_aliases", FunctionName=function_name)["Aliases"])
except is_boto3_error_code("ResourceNotFoundException"):
lambda_info.update(aliases=[])
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg="Trying to get aliases")
return camel_dict_to_snake_dict(lambda_info)
def _get_query(query, function_name):
# create default values for query if not specified.
# if function name exists, query should default to 'all'.
# if function name does not exist, query should default to 'config' to limit the runtime when listing all lambdas.
if query:
return query
if function_name:
return "all"
return "config"
def list_functions(client, module):
"""
Returns queried facts for a specified function (or all functions).
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
"""
function_name = module.params.get("function_name")
if function_name:
# Function name is specified - retrieve info on that function
function_names = [function_name]
else:
# Function name is not specified - retrieve all function names
all_function_info = _paginate(client, "list_functions")["Functions"]
function_names = [function_info["FunctionName"] for function_info in all_function_info]
query = _get_query(module.params["query"], function_name)
functions = []
# keep returning deprecated response (dict of dicts) until removed
all_facts = {}
for function_name in function_names:
function = {}
# query = 'config' returns info such as FunctionName, FunctionArn, Description, etc
# these details should be returned regardless of the query
function.update(config_details(client, module, function_name))
if query in ["all", "aliases"]:
function.update(alias_details(client, module, function_name))
if query in ["all", "policy"]:
function.update(policy_details(client, module, function_name))
if query in ["all", "versions"]:
function.update(version_details(client, module, function_name))
if query in ["all", "mappings"]:
function.update(mapping_details(client, module, function_name))
if query in ["all", "tags"]:
function.update(tags_details(client, module, function_name))
all_facts[function["function_name"]] = function
# add current lambda to list of lambdas
functions.append(function)
# return info
module.exit_json(function=all_facts, functions=functions, changed=False)
def config_details(client, module, function_name):
"""
Returns configuration details for a lambda function.
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
:param function_name (str): Name of Lambda function to query
:return dict:
"""
lambda_info = dict()
try:
lambda_info.update(client.get_function_configuration(aws_retry=True, FunctionName=function_name))
except is_boto3_error_code("ResourceNotFoundException"):
lambda_info.update(function={})
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg=f"Trying to get {function_name} configuration")
if "Environment" in lambda_info and "Variables" in lambda_info["Environment"]:
env_vars = lambda_info["Environment"]["Variables"]
snaked_lambda_info = camel_dict_to_snake_dict(lambda_info)
snaked_lambda_info["environment"]["variables"] = env_vars
else:
snaked_lambda_info = camel_dict_to_snake_dict(lambda_info)
return snaked_lambda_info
def mapping_details(client, module, function_name):
"""
Returns all lambda event source mappings.
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
:param function_name (str): Name of Lambda function to query
:return dict:
"""
lambda_info = dict()
params = dict()
params["FunctionName"] = function_name
if module.params.get("event_source_arn"):
params["EventSourceArn"] = module.params.get("event_source_arn")
try:
lambda_info.update(mappings=_paginate(client, "list_event_source_mappings", **params)["EventSourceMappings"])
except is_boto3_error_code("ResourceNotFoundException"):
lambda_info.update(mappings=[])
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg="Trying to get source event mappings")
return camel_dict_to_snake_dict(lambda_info)
def policy_details(client, module, function_name):
"""
Returns policy attached to a lambda function.
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
:param function_name (str): Name of Lambda function to query
:return dict:
"""
lambda_info = dict()
try:
# get_policy returns a JSON string so must convert to dict before reassigning to its key
lambda_info.update(policy=json.loads(client.get_policy(aws_retry=True, FunctionName=function_name)["Policy"]))
except is_boto3_error_code("ResourceNotFoundException"):
lambda_info.update(policy={})
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg=f"Trying to get {function_name} policy")
return camel_dict_to_snake_dict(lambda_info)
def version_details(client, module, function_name):
"""
Returns all lambda function versions.
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
:param function_name (str): Name of Lambda function to query
:return dict:
"""
lambda_info = dict()
try:
lambda_info.update(
versions=_paginate(client, "list_versions_by_function", FunctionName=function_name)["Versions"]
)
except is_boto3_error_code("ResourceNotFoundException"):
lambda_info.update(versions=[])
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg=f"Trying to get {function_name} versions")
return camel_dict_to_snake_dict(lambda_info)
def tags_details(client, module, function_name):
"""
Returns tag details for a lambda function.
:param client: AWS API client reference (boto3)
:param module: Ansible module reference
:param function_name (str): Name of Lambda function to query
:return dict:
"""
lambda_info = dict()
try:
lambda_info.update(tags=client.get_function(aws_retry=True, FunctionName=function_name).get("Tags", {}))
except is_boto3_error_code("ResourceNotFoundException"):
lambda_info.update(function={})
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
module.fail_json_aws(e, msg=f"Trying to get {function_name} tags")
return camel_dict_to_snake_dict(lambda_info)
def main():
"""
Main entry point.
:return dict: ansible facts
"""
argument_spec = dict(
function_name=dict(required=False, default=None, aliases=["function", "name"]),
query=dict(
required=False, choices=["aliases", "all", "config", "mappings", "policy", "versions", "tags"], default=None
),
event_source_arn=dict(required=False, default=None),
)
module = AnsibleAWSModule(
argument_spec=argument_spec, supports_check_mode=True, mutually_exclusive=[], required_together=[]
)
# validate function_name if present
function_name = module.params["function_name"]
if function_name:
if not re.search(r"^[\w\-:]+$", function_name):
module.fail_json(
msg=f"Function name {function_name} is invalid. Names must contain only alphanumeric characters and hyphens.",
)
if len(function_name) > 64:
module.fail_json(msg=f'Function name "{function_name}" exceeds 64 character limit')
client = module.client("lambda", retry_decorator=AWSRetry.jittered_backoff())
# Deprecate previous return key of `function`, as it was a dict of dicts, as opposed to a list of dicts
module.deprecate(
(
"The returned key 'function', which returned a dictionary of dictionaries, is deprecated and will be"
" replaced by 'functions', which returns a list of dictionaries. Both keys are returned for now."
),
date="2025-01-01",
collection_name="amazon.aws",
)
list_functions(client, module)
if __name__ == "__main__":
main()
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