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cloudfront_invalidation.py
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cloudfront_invalidation.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (c) 2017 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
DOCUMENTATION = r"""
---
version_added: 1.0.0
module: cloudfront_invalidation
short_description: create invalidations for AWS CloudFront distributions
description:
- Allows for invalidation of a batch of paths for a CloudFront distribution.
author:
- Willem van Ketwich (@wilvk)
options:
distribution_id:
description:
- The ID of the CloudFront distribution to invalidate paths for. Can be specified instead of the alias.
required: false
type: str
alias:
description:
- The alias of the CloudFront distribution to invalidate paths for. Can be specified instead of distribution_id.
required: false
type: str
caller_reference:
description:
- A unique reference identifier for the invalidation paths.
- Defaults to current datetime stamp.
required: false
default:
type: str
target_paths:
description:
- A list of paths on the distribution to invalidate. Each path should begin with C(/). Wildcards are allowed. eg. C(/foo/bar/*)
required: true
type: list
elements: str
notes:
- does not support check mode
extends_documentation_fragment:
- amazon.aws.common.modules
- amazon.aws.region.modules
- amazon.aws.boto3
"""
EXAMPLES = r"""
- name: create a batch of invalidations using a distribution_id for a reference
community.aws.cloudfront_invalidation:
distribution_id: E15BU8SDCGSG57
caller_reference: testing 123
target_paths:
- /testpathone/test1.css
- /testpathtwo/test2.js
- /testpaththree/test3.ss
- name: create a batch of invalidations using an alias as a reference and one path using a wildcard match
community.aws.cloudfront_invalidation:
alias: alias.test.com
caller_reference: testing 123
target_paths:
- /testpathone/test4.css
- /testpathtwo/test5.js
- /testpaththree/*
"""
RETURN = r"""
invalidation:
description: The invalidation's information.
returned: always
type: complex
contains:
create_time:
description: The date and time the invalidation request was first made.
returned: always
type: str
sample: '2018-02-01T15:50:41.159000+00:00'
id:
description: The identifier for the invalidation request.
returned: always
type: str
sample: I2G9MOWJZFV612
invalidation_batch:
description: The current invalidation information for the batch request.
returned: always
type: complex
contains:
caller_reference:
description: The value used to uniquely identify an invalidation request.
returned: always
type: str
sample: testing 123
paths:
description: A dict that contains information about the objects that you want to invalidate.
returned: always
type: complex
contains:
items:
description: A list of the paths that you want to invalidate.
returned: always
type: list
sample:
- /testpathtwo/test2.js
- /testpathone/test1.css
- /testpaththree/test3.ss
quantity:
description: The number of objects that you want to invalidate.
returned: always
type: int
sample: 3
status:
description: The status of the invalidation request.
returned: always
type: str
sample: Completed
location:
description: The fully qualified URI of the distribution and invalidation batch request.
returned: always
type: str
sample: https://cloudfront.amazonaws.com/2017-03-25/distribution/E1ZID6KZJECZY7/invalidation/I2G9MOWJZFV622
"""
import datetime
try:
import botocore
except ImportError:
pass # caught by imported AnsibleAWSModule
from ansible.module_utils.common.dict_transformations import camel_dict_to_snake_dict
from ansible.module_utils.common.dict_transformations import snake_dict_to_camel_dict
from ansible_collections.amazon.aws.plugins.module_utils.botocore import is_boto3_error_message
from ansible_collections.amazon.aws.plugins.module_utils.cloudfront_facts import CloudFrontFactsServiceManager
from ansible_collections.community.aws.plugins.module_utils.modules import AnsibleCommunityAWSModule as AnsibleAWSModule
class CloudFrontInvalidationServiceManager(object):
"""
Handles CloudFront service calls to AWS for invalidations
"""
def __init__(self, module, cloudfront_facts_mgr):
self.module = module
self.client = module.client("cloudfront")
self.__cloudfront_facts_mgr = cloudfront_facts_mgr
def create_invalidation(self, distribution_id, invalidation_batch):
current_invalidation_response = self.get_invalidation(distribution_id, invalidation_batch["CallerReference"])
try:
response = self.client.create_invalidation(
DistributionId=distribution_id, InvalidationBatch=invalidation_batch
)
response.pop("ResponseMetadata", None)
if current_invalidation_response:
return response, False
else:
return response, True
except is_boto3_error_message(
"Your request contains a caller reference that was used for a previous invalidation "
"batch for the same distribution."
):
self.module.warn(
"InvalidationBatch target paths are not modifiable. "
"To make a new invalidation please update caller_reference."
)
return current_invalidation_response, False
except (
botocore.exceptions.ClientError,
botocore.exceptions.BotoCoreError,
) as e: # pylint: disable=duplicate-except
self.module.fail_json_aws(e, msg="Error creating CloudFront invalidations.")
def get_invalidation(self, distribution_id, caller_reference):
# find all invalidations for the distribution
invalidations = self.__cloudfront_facts_mgr.list_invalidations(distribution_id=distribution_id)
# check if there is an invalidation with the same caller reference
for invalidation in invalidations:
invalidation_info = self.__cloudfront_facts_mgr.get_invalidation(
distribution_id=distribution_id, id=invalidation["Id"]
)
if invalidation_info.get("InvalidationBatch", {}).get("CallerReference") == caller_reference:
invalidation_info.pop("ResponseMetadata", None)
return invalidation_info
return {}
class CloudFrontInvalidationValidationManager(object):
"""
Manages CloudFront validations for invalidation batches
"""
def __init__(self, module, cloudfront_facts_mgr):
self.module = module
self.__cloudfront_facts_mgr = cloudfront_facts_mgr
def validate_distribution_id(self, distribution_id, alias):
try:
if distribution_id is None and alias is None:
self.module.fail_json(msg="distribution_id or alias must be specified")
if distribution_id is None:
distribution_id = self.__cloudfront_facts_mgr.get_distribution_id_from_domain_name(alias)
return distribution_id
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self.module.fail_json_aws(e, msg="Error validating parameters.")
def create_aws_list(self, invalidation_batch):
aws_list = {}
aws_list["Quantity"] = len(invalidation_batch)
aws_list["Items"] = invalidation_batch
return aws_list
def validate_invalidation_batch(self, invalidation_batch, caller_reference):
try:
if caller_reference is not None:
valid_caller_reference = caller_reference
else:
valid_caller_reference = datetime.datetime.now().isoformat()
valid_invalidation_batch = {
"paths": self.create_aws_list(invalidation_batch),
"caller_reference": valid_caller_reference,
}
return valid_invalidation_batch
except (botocore.exceptions.ClientError, botocore.exceptions.BotoCoreError) as e:
self.module.fail_json_aws(e, msg="Error validating invalidation batch.")
def main():
argument_spec = dict(
caller_reference=dict(),
distribution_id=dict(),
alias=dict(),
target_paths=dict(required=True, type="list", elements="str"),
)
module = AnsibleAWSModule(
argument_spec=argument_spec, supports_check_mode=False, mutually_exclusive=[["distribution_id", "alias"]]
)
cloudfront_facts_mgr = CloudFrontFactsServiceManager(module)
validation_mgr = CloudFrontInvalidationValidationManager(module, cloudfront_facts_mgr)
service_mgr = CloudFrontInvalidationServiceManager(module, cloudfront_facts_mgr)
caller_reference = module.params.get("caller_reference")
distribution_id = module.params.get("distribution_id")
alias = module.params.get("alias")
target_paths = module.params.get("target_paths")
result = {}
distribution_id = validation_mgr.validate_distribution_id(distribution_id, alias)
valid_target_paths = validation_mgr.validate_invalidation_batch(target_paths, caller_reference)
valid_pascal_target_paths = snake_dict_to_camel_dict(valid_target_paths, True)
result, changed = service_mgr.create_invalidation(distribution_id, valid_pascal_target_paths)
module.exit_json(changed=changed, **camel_dict_to_snake_dict(result))
if __name__ == "__main__":
main()