[cloud] New module: AWS API Gageway module (#20230)

* Ultra basic api-gateway module based of lambda.py

* Ultra basic deployment added to api-gateway module

* ApiGateway module Allow creation of APIs, more documentation and better return value

* ApiGateway module incorporate review feedback

* ApiGateway module flake8 cleanup

* APIGateway module - more review fixes.

* slightly better messages in api_gateway module

* AWS api_gateway module - try to improve messages in case of exceptions

* rename api_gateway module to aws_api_gateway as discussed in PR 20230

* aws_api_gateway - Allow delivery of swagger either as text or dictionary.

* aws_api_gateway module - introduce 'unit' tests, improve imports using them and small fixes

* aws_api_gateway module - move path expand_user to avoid early typecheck

* aws_api_gateway - version means version of metadata not module - fix to 1.0

* aws_api_gateway module - Rely on module_utils.ec2 for imports & path type for expanduser / cleanups

* aws_api_gateway module - heavy cleanup and refactor of code + cloud retry functionality.

* api_gateway_module - failing test case for handling more than one deployment in succession and API deletion

* add TooManyRequestsException to AWSRetry exception list - makes API deployment work.

* api_gateway_module - Fixes for various review comments + errors from various linters

* api_gateway_module - Fixes for more review comments + linter error

* api_gateway_module - Major refactor into sensible functions - create_response becomes configure_response

* api_gateway_module - should be working under python3; remove test exclusion

* api_gateway_module - finish off remaining review fixes - use ansible defaults and fix mutually exclusive

* api_gateway_module - attempt to improve handling of botocore errors in python3

* api_gateway_module - implement state=absent / API deletion
pull/25359/head
Michael De La Rue 8 years ago committed by Ryan Brown
parent 087b5277f1
commit e28845018d

@ -80,9 +80,17 @@ class AWSRetry(CloudRetry):
def found(response_code):
# This list of failures is based on this API Reference
# http://docs.aws.amazon.com/AWSEC2/latest/APIReference/errors-overview.html
#
# TooManyRequestsException comes from inside botocore when it
# does retrys, unfortunately however it does not try long
# enough to allow some services such as API Gateway to
# complete configuration. At the moment of writing there is a
# botocore/boto3 bug open to fix this.
#
# https://github.com/boto/boto3/issues/876 (and linked PRs etc)
retry_on = [
'RequestLimitExceeded', 'Unavailable', 'ServiceUnavailable',
'InternalFailure', 'InternalError'
'InternalFailure', 'InternalError', 'TooManyRequestsException'
]
not_found = re.compile(r'^\w+.NotFound')

@ -0,0 +1,337 @@
#!/usr/bin/python
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
ANSIBLE_METADATA = {'status': ['preview'],
'supported_by': 'community',
'metadata_version': '1.0'}
DOCUMENTATION = '''
---
module: aws_api_gateway
short_description: Manage AWS API Gateway APIs
description:
- Allows for the management of API Gatway APIs
- Normally you should give the api_id since there is no other
stable guaranteed unique identifier for the API. If you do
not give api_id then a new API will be create each time
this is run.
- Beware that there are very hard limits on the rate that
you can call API Gateway's REST API. You may need to patch
your boto. See https://github.com/boto/boto3/issues/876
and discuss with your AWS rep.
- swagger_file and swagger_text are passed directly on to AWS
transparently whilst swagger_dict is an ansible dict which is
converted to JSON before the API definitions are uploaded.
version_added: '2.4'
requirements: [ boto3 ]
options:
api_id:
description:
- The ID of the API you want to manage.
state:
description:
- NOT IMPLEMENTED Create or delete API - currently we always create.
default: present
choices: [ 'present', 'absent' ]
swagger_file:
description:
- JSON or YAML file containing swagger definitions for API.
Exactly one of swagger_file, swagger_text or swagger_dict must
be present.
swagger_text:
description:
- Swagger definitions for API in JSON or YAML as a string direct
from playbook.
swagger_dict:
description:
- Swagger definitions API ansible dictionary which will be
converted to JSON and uploaded.
stage:
description:
- The name of the stage the API should be deployed to.
deploy_desc:
description:
- Description of the deployment - recorded and visible in the
AWS console.
default: Automatic deployment by Ansible.
author:
- 'Michael De La Rue (@mikedlr)'
extends_documentation_fragment:
- aws
notes:
- A future version of this module will probably use tags or another
ID so that an API can be create only once.
- As an early work around an intermediate version will probably do
the same using a tag embedded in the API name.
'''
EXAMPLES = '''
# Update API resources for development
tasks:
- name: update API
aws_api_gateway:
api_id: 'abc123321cba'
state: present
swagger_file: my_api.yml
# update definitions and deploy API to production
tasks:
- name: deploy API
aws_api_gateway:
api_id: 'abc123321cba'
state: present
swagger_file: my_api.yml
stage: production
deploy_desc: Make auth fix available.
'''
RETURN = '''
output:
description: the data returned by put_restapi in boto3
returned: success
type: dict
sample:
'data':
{
"id": "abc123321cba",
"name": "MY REST API",
"createdDate": 1484233401
}
'''
import json
from ansible.module_utils.basic import AnsibleModule, traceback
from ansible.module_utils.ec2 import ec2_argument_spec, get_aws_connection_info, boto3_conn, camel_dict_to_snake_dict, AWSRetry
from ansible.module_utils.ec2 import HAS_BOTO3
try:
import botocore
HAS_BOTOCORE = True
except ImportError:
HAS_BOTOCORE = False
def main():
argument_spec = ec2_argument_spec()
argument_spec.update(
dict(
api_id=dict(type='str', required=False),
state=dict(type='str', default='present', choices=['present', 'absent']),
swagger_file=dict(type='path', default=None, aliases=['src', 'api_file']),
swagger_dict=dict(type='json', default=None),
swagger_text=dict(type='str', default=None),
stage=dict(type='str', default=None),
deploy_desc=dict(type='str', default="Automatic deployment by Ansible."),
)
)
mutually_exclusive = [['swagger_file', 'swagger_dict', 'swagger_text']] # noqa: F841
module = AnsibleModule(argument_spec=argument_spec, supports_check_mode=False,
mutually_exclusive=mutually_exclusive)
api_id = module.params.get('api_id')
state = module.params.get('state') # noqa: F841
swagger_file = module.params.get('swagger_file')
swagger_dict = module.params.get('swagger_dict')
swagger_text = module.params.get('swagger_text')
stage = module.params.get('stage')
deploy_desc = module.params.get('deploy_desc')
# check_mode = module.check_mode
changed = False
if not HAS_BOTO3:
module.fail_json(msg='Python module "boto3" is missing, please install boto3')
if not HAS_BOTOCORE:
module.fail_json(msg='Python module "botocore" is missing, please install it')
region, ec2_url, aws_connect_kwargs = get_aws_connection_info(module, boto3=True)
try:
client = boto3_conn(module, conn_type='client', resource='apigateway',
region=region, endpoint=ec2_url, **aws_connect_kwargs)
except botocore.exceptions.NoRegionError:
module.fail_json(msg="Region must be specified as a parameter, in "
"AWS_DEFAULT_REGION environment variable or in boto configuration file")
except (botocore.exceptions.ValidationError, botocore.exceptions.ClientError) as e:
fail_json_aws(module, e, msg="connecting to AWS")
changed = True # for now it will stay that way until we can sometimes avoid change
conf_res = None
dep_res = None
del_res = None
if state == "present":
if api_id is None:
api_id = create_empty_api(module, client)
api_data = get_api_definitions(module, swagger_file=swagger_file,
swagger_dict=swagger_dict, swagger_text=swagger_text)
conf_res, dep_res = ensure_api_in_correct_state(module, client, api_id=api_id,
api_data=api_data, stage=stage,
deploy_desc=deploy_desc)
if state == "absent":
del_res = delete_rest_api(module, client, api_id)
exit_args = {"changed": changed, "api_id": api_id}
if conf_res is not None:
exit_args['configure_response'] = camel_dict_to_snake_dict(conf_res)
if dep_res is not None:
exit_args['deploy_response'] = camel_dict_to_snake_dict(dep_res)
if del_res is not None:
exit_args['delete_response'] = camel_dict_to_snake_dict(del_res)
module.exit_json(**exit_args)
def get_api_definitions(module, swagger_file=None, swagger_dict=None, swagger_text=None):
apidata = None
if swagger_file is not None:
try:
with open(swagger_file) as f:
apidata = f.read()
except OSError as e:
msg = "Failed trying to read swagger file {}: {}".format(str(swagger_file), str(e))
module.fail_json(msg=msg, exception=traceback.format_exc())
if swagger_dict is not None:
apidata = json.dumps(swagger_dict)
if swagger_text is not None:
apidata = swagger_text
if apidata is None:
module.fail_json(msg='module error - failed to get API data')
return apidata
def create_empty_api(module, client):
"""
creates a new empty API ready to be configured. The description is
temporarily set to show the API as incomplete but should be
updated when the API is configured.
"""
desc = "Incomplete API creation by ansible aws_api_gateway module"
try:
awsret = create_api(client, name="ansible-temp-api", description=desc)
except (botocore.exceptions.ClientError, botocore.exceptions.EndpointConnectionError) as e:
fail_json_aws(module, e, msg="creating API")
return awsret["id"]
def delete_rest_api(module, client, api_id):
"""
creates a new empty API ready to be configured. The description is
temporarily set to show the API as incomplete but should be
updated when the API is configured.
"""
try:
delete_response = delete_api(client, api_id=api_id)
except (botocore.exceptions.ClientError, botocore.exceptions.EndpointConnectionError) as e:
fail_json_aws(module, e, msg="deleting API {}".format(api_id))
return delete_response
def ensure_api_in_correct_state(module, client, api_id=None, api_data=None, stage=None,
deploy_desc=None):
"""Make sure that we have the API configured and deployed as instructed.
This function first configures the API correctly uploading the
swagger definitions and then deploys those. Configuration and
deployment should be closely tied because there is only one set of
definitions so if we stop, they may be updated by someone else and
then we deploy the wrong configuration.
"""
configure_response = None
try:
configure_response = configure_api(client, api_data=api_data, api_id=api_id)
except (botocore.exceptions.ClientError, botocore.exceptions.EndpointConnectionError) as e:
fail_json_aws(module, e, msg="configuring API {}".format(api_id))
deploy_response = None
if stage:
try:
deploy_response = create_deployment(client, api_id=api_id, stage=stage,
description=deploy_desc)
except (botocore.exceptions.ClientError, botocore.exceptions.EndpointConnectionError) as e:
msg = "deploying api {} to stage {}".format(api_id, stage)
fail_json_aws(module, e, msg)
return configure_response, deploy_response
# There is a PR open to merge fail_json_aws this into the standard module code;
# see https://github.com/ansible/ansible/pull/23882
def fail_json_aws(module, exception, msg=None):
"""call fail_json with processed exception
function for converting exceptions thrown by AWS SDK modules,
botocore, boto3 and boto, into nice error messages.
"""
last_traceback = traceback.format_exc()
try:
except_msg = exception.message
except AttributeError:
except_msg = str(exception)
if msg is not None:
message = '{}: {}'.format(msg, except_msg)
else:
message = except_msg
try:
response = exception.response
except AttributeError:
response = None
if response is None:
module.fail_json(msg=message, traceback=last_traceback)
else:
module.fail_json(msg=message, traceback=last_traceback,
**camel_dict_to_snake_dict(response))
retry_params = {"tries": 10, "delay": 5, "backoff": 1.2}
@AWSRetry.backoff(**retry_params)
def create_api(client, name=None, description=None):
return client.create_rest_api(name="ansible-temp-api", description=description)
@AWSRetry.backoff(**retry_params)
def delete_api(client, api_id=None):
return client.delete_rest_api(restApiId=api_id)
@AWSRetry.backoff(**retry_params)
def configure_api(client, api_data=None, api_id=None, mode="overwrite"):
return client.put_rest_api(body=api_data, restApiId=api_id, mode=mode)
@AWSRetry.backoff(**retry_params)
def create_deployment(client, api_id=None, stage=None, description=None):
# we can also get None as an argument so we don't do this as a defult
return client.create_deployment(restApiId=api_id, stageName=stage, description=description)
if __name__ == '__main__':
main()

@ -0,0 +1,2 @@
cloud/aws
posix/ci/cloud/aws

@ -0,0 +1,3 @@
dependencies:
- prepare_tests
- setup_ec2

@ -0,0 +1,182 @@
- block:
# ============================================================
- name: test with no parameters
aws_api_gateway:
register: result
ignore_errors: true
- name: assert failure when called with no parameters
assert:
that:
- 'result.failed'
- 'result.msg.startswith("Region must be specified")'
# ============================================================
- name: test with minimal parameters but no region
aws_api_gateway:
api_id: 'fake-api-doesnt-exist'
register: result
ignore_errors: true
- name: assert failure when called with with minimal parameters but no region
assert:
that:
- 'result.failed'
- 'result.msg.startswith("Region must be specified")'
# ============================================================
- name: test disallow multiple swagger sources
aws_api_gateway:
api_id: 'fake-api-doesnt-exist'
region: 'fake_region'
swagger_file: foo.yml
swagger_text: "this is not really an API"
register: result
ignore_errors: true
- name: assert failure when called with with minimal parameters but no region
assert:
that:
- 'result.failed'
- 'result.msg.startswith("parameters are mutually exclusive")'
# This fails with
# msg": "There is an issue in the code of the module. You must
# specify either both, resource or client to the conn_type
# parameter in the boto3_conn function call"
# even though the call appears to include conn_type='client'
# # ============================================================
# - name: test invalid region parameter
# aws_api_gateway:
# api_id: 'fake-api-doesnt-exist'
# region: 'asdf querty 1234'
# register: result
# ignore_errors: true
# - name: assert invalid region parameter
# assert:
# that:
# - 'result.failed'
# - 'result.msg.startswith("Region asdf querty 1234 does not seem to be available ")'
# ============================================================
- name: build API file
template:
src: minimal-swagger-api.yml.j2
dest: "{{output_dir}}/minimal-swagger-api.yml"
tags: new_api,api,api_file
- name: deploy new API
aws_api_gateway:
api_file: "{{output_dir}}/minimal-swagger-api.yml"
stage: "minimal"
region: '{{ec2_region}}'
aws_access_key: '{{ec2_access_key}}'
aws_secret_key: '{{ec2_secret_key}}'
security_token: '{{security_token}}'
register: create_result
- name: assert deploy new API worked
assert:
that:
- 'create_result.changed == True'
- '"api_id" in create_result'
# - '"created_response.created_date" in create_result'
# - '"deploy_response.created_date" in create_result'
- name: check API works
uri: url="https://{{create_result.api_id}}.execute-api.{{ec2_region}}.amazonaws.com/minimal"
register: uri_result
- name: assert API works success
assert:
that:
- 'uri_result'
- name: check nonexistent endpoints cause errors
uri: url="https://{{create_result.api_id}}.execute-api.{{ec2_region}}.amazonaws.com/nominal"
register: bad_uri_result
ignore_errors: true
- name: assert
assert:
that:
- bad_uri_result|failed
# ============================================================
- name: deploy first API
aws_api_gateway:
api_file: "{{output_dir}}/minimal-swagger-api.yml"
stage: "minimal"
region: '{{ec2_region}}'
aws_access_key: '{{ec2_access_key}}'
aws_secret_key: '{{ec2_secret_key}}'
security_token: '{{security_token}}'
register: create_result_1
- name: deploy second API rapidly after first
aws_api_gateway:
api_file: "{{output_dir}}/minimal-swagger-api.yml"
stage: "minimal"
region: '{{ec2_region}}'
aws_access_key: '{{ec2_access_key}}'
aws_secret_key: '{{ec2_secret_key}}'
security_token: '{{security_token}}'
register: create_result_2
- name: assert both APIs deployed successfully
assert:
that:
- 'create_result_1.changed == True'
- 'create_result_2.changed == True'
- '"api_id" in create_result_1'
- '"api_id" in create_result_1'
# - '"created_response.created_date" in create_result'
# - '"deploy_response.created_date" in create_result'
- name: destroy first API
aws_api_gateway:
state: absent
api_id: '{{create_result_1.api_id}}'
region: '{{ec2_region}}'
aws_access_key: '{{ec2_access_key}}'
aws_secret_key: '{{ec2_secret_key}}'
security_token: '{{security_token}}'
register: destroy_result_1
- name: destroy second API rapidly after first
aws_api_gateway:
state: absent
api_id: '{{create_result_2.api_id}}'
region: '{{ec2_region}}'
aws_access_key: '{{ec2_access_key}}'
aws_secret_key: '{{ec2_secret_key}}'
security_token: '{{security_token}}'
register: destroy_result_2
- name: assert both APIs deployed successfully
assert:
that:
- 'destroy_result_1.changed == True'
- 'destroy_result_2.changed == True'
# - '"created_response.created_date" in create_result'
# - '"deploy_response.created_date" in create_result'
always:
# ============================================================
- name: test state=absent (expect changed=false)
aws_api_gateway:
state: absent
api_id: '{{create_result.api_id}}'
ec2_region: '{{ec2_region}}'
aws_access_key: '{{ec2_access_key}}'
aws_secret_key: '{{ec2_secret_key}}'
security_token: '{{security_token}}'
register: destroy_result

@ -0,0 +1,33 @@
---
swagger: "2.0"
info:
version: "2017-05-11T12:14:59Z"
title: "{{resource_prefix}}Empty_API"
host: "fakeexample.execute-api.us-east-1.amazonaws.com"
basePath: "/minimal"
schemes:
- "https"
paths:
/:
get:
consumes:
- "application/json"
produces:
- "application/json"
responses:
200:
description: "200 response"
schema:
$ref: "#/definitions/Empty"
x-amazon-apigateway-integration:
responses:
default:
statusCode: "200"
requestTemplates:
application/json: "{\"statusCode\": 200}"
passthroughBehavior: "when_no_match"
type: "mock"
definitions:
Empty:
type: "object"
title: "Empty Schema"

@ -0,0 +1,85 @@
#
# (c) 2016 Michael De La Rue
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
from nose.plugins.skip import SkipTest
import pytest
import sys
import json
from ansible.module_utils._text import to_bytes
from ansible.module_utils import basic
from ansible.module_utils.ec2 import HAS_BOTO3
if not HAS_BOTO3:
raise SkipTest("test_api_gateway.py requires the `boto3` and `botocore` modules")
import ansible.modules.cloud.amazon.aws_api_gateway as agw
def set_module_args(args):
args = json.dumps({'ANSIBLE_MODULE_ARGS': args})
basic._ANSIBLE_ARGS = to_bytes(args)
exit_return_dict = {}
def fake_exit_json(self, **kwargs):
""" store the kwargs given to exit_json rather than putting them out to stdout"""
global exit_return_dict
exit_return_dict = kwargs
sys.exit(0)
def test_upload_api(monkeypatch):
class FakeConnection:
def put_rest_api(self, *args, **kwargs):
assert kwargs["body"] == "the-swagger-text-is-fake"
return {"msg": "success!"}
def return_fake_connection(*args, **kwargs):
return FakeConnection()
monkeypatch.setattr(agw, "boto3_conn", return_fake_connection)
monkeypatch.setattr(agw.AnsibleModule, "exit_json", fake_exit_json)
set_module_args({
"api_id": "fred",
"state": "present",
"swagger_text": "the-swagger-text-is-fake",
"region": 'mars-north-1',
})
with pytest.raises(SystemExit):
agw.main()
assert exit_return_dict["changed"]
def test_warn_if_region_not_specified():
set_module_args({
"name": "aws_api_gateway",
"state": "present",
"runtime": 'python2.7',
"role": 'arn:aws:iam::987654321012:role/lambda_basic_execution',
"handler": 'lambda_python.my_handler'})
with pytest.raises(SystemExit):
print(agw.main())
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