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Cloud Posse

Terraform module to provision API Gatway resources.

The root module creates an API Gateway REST API along with configuring tracing, logging, and metrics.

The module also consists of the following submodules:

  • account-settings - to provision account-level settings for logging and metrics for API Gateway

This project is part of our comprehensive "SweetOps" approach towards DevOps.

Terraform Open Source Modules

It's 100% Open Source and licensed under the APACHE2.

We literally have hundreds of terraform modules that are Open Source and well-maintained. Check them out!

Introduction

A set of modules for configuring an API Gateway

Security & Compliance

Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.

Benchmark Description
Infrastructure Security Infrastructure Security Compliance
CIS KUBERNETES Center for Internet Security, KUBERNETES Compliance
CIS AWS Center for Internet Security, AWS Compliance
CIS AZURE Center for Internet Security, AZURE Compliance
PCI-DSS Payment Card Industry Data Security Standards Compliance
NIST-800-53 National Institute of Standards and Technology Compliance
ISO27001 Information Security Management System, ISO/IEC 27001 Compliance
SOC2 Service Organization Control 2 Compliance
CIS GCP Center for Internet Security, GCP Compliance
HIPAA Health Insurance Portability and Accountability Compliance

Usage

IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.

Setup the account-level settings for logging and metrics for API Gateway:

module "api_gateway_account_settings" {
  source  = "cloudposse/api-gateway/aws//modules/account-settings"
  # version = "x.x.x"

  context = module.this.context
}

Examples

Review the examples folder to see how to use the API Gateway modules.

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

Name Version
terraform >= 0.13
aws >= 3.0

Providers

Name Version
aws >= 3.0

Modules

Name Source Version
cloudwatch_log_group cloudposse/cloudwatch-logs/aws 0.6.8
this cloudposse/label/null 0.25.0

Resources

Name Type
aws_api_gateway_deployment.this resource
aws_api_gateway_method_settings.all resource
aws_api_gateway_rest_api.this resource
aws_api_gateway_rest_api_policy.this resource
aws_api_gateway_stage.this resource
aws_api_gateway_vpc_link.this resource

Inputs

Name Description Type Default Required
access_log_format The format of the access log file. string " {\n\t\"requestTime\": \"$context.requestTime\",\n\t\"requestId\": \"$context.requestId\",\n\t\"httpMethod\": \"$context.httpMethod\",\n\t\"path\": \"$context.path\",\n\t\"resourcePath\": \"$context.resourcePath\",\n\t\"status\": $context.status,\n\t\"responseLatency\": $context.responseLatency,\n \"xrayTraceId\": \"$context.xrayTraceId\",\n \"integrationRequestId\": \"$context.integration.requestId\",\n\t\"functionResponseStatus\": \"$context.integration.status\",\n \"integrationLatency\": \"$context.integration.latency\",\n\t\"integrationServiceStatus\": \"$context.integration.integrationStatus\",\n \"authorizeResultStatus\": \"$context.authorize.status\",\n\t\"authorizerServiceStatus\": \"$context.authorizer.status\",\n\t\"authorizerLatency\": \"$context.authorizer.latency\",\n\t\"authorizerRequestId\": \"$context.authorizer.requestId\",\n \"ip\": \"$context.identity.sourceIp\",\n\t\"userAgent\": \"$context.identity.userAgent\",\n\t\"principalId\": \"$context.authorizer.principalId\",\n\t\"cognitoUser\": \"$context.identity.cognitoIdentityId\",\n \"user\": \"$context.identity.user\"\n}\n" no
additional_tag_map Additional key-value pairs to add to each map in tags_as_list_of_maps. Not added to tags or id.
This is for some rare cases where resources want additional configuration of tags
and therefore take a list of maps with tag key, value, and additional configuration.
map(string) {} no
attributes ID element. Additional attributes (e.g. workers or cluster) to add to id,
in the order they appear in the list. New attributes are appended to the
end of the list. The elements of the list are joined by the delimiter
and treated as a single ID element.
list(string) [] no
context Single object for setting entire context at once.
See description of individual variables for details.
Leave string and numeric variables as null to use default value.
Individual variable settings (non-null) override settings in context object,
except for attributes, tags, and additional_tag_map, which are merged.
any
{
"additional_tag_map": {},
"attributes": [],
"delimiter": null,
"descriptor_formats": {},
"enabled": true,
"environment": null,
"id_length_limit": null,
"label_key_case": null,
"label_order": [],
"label_value_case": null,
"labels_as_tags": [
"unset"
],
"name": null,
"namespace": null,
"regex_replace_chars": null,
"stage": null,
"tags": {},
"tenant": null
}
no
delimiter Delimiter to be used between ID elements.
Defaults to - (hyphen). Set to "" to use no delimiter at all.
string null no
descriptor_formats Describe additional descriptors to be output in the descriptors output map.
Map of maps. Keys are names of descriptors. Values are maps of the form
{<br> format = string<br> labels = list(string)<br>}
(Type is any so the map values can later be enhanced to provide additional options.)
format is a Terraform format string to be passed to the format() function.
labels is a list of labels, in order, to pass to format() function.
Label values will be normalized before being passed to format() so they will be
identical to how they appear in id.
Default is {} (descriptors output will be empty).
any {} no
enabled Set to false to prevent the module from creating any resources bool null no
endpoint_type The type of the endpoint. One of - PUBLIC, PRIVATE, REGIONAL string "REGIONAL" no
environment ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' string null no
iam_tags_enabled Enable/disable tags on IAM roles and policies string true no
id_length_limit Limit id to this many characters (minimum 6).
Set to 0 for unlimited length.
Set to null for keep the existing setting, which defaults to 0.
Does not affect id_full.
number null no
label_key_case Controls the letter case of the tags keys (label names) for tags generated by this module.
Does not affect keys of tags passed in via the tags input.
Possible values: lower, title, upper.
Default value: title.
string null no
label_order The order in which the labels (ID elements) appear in the id.
Defaults to ["namespace", "environment", "stage", "name", "attributes"].
You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.
list(string) null no
label_value_case Controls the letter case of ID elements (labels) as included in id,
set as tag values, and output by this module individually.
Does not affect values of tags passed in via the tags input.
Possible values: lower, title, upper and none (no transformation).
Set this to title and set delimiter to "" to yield Pascal Case IDs.
Default value: lower.
string null no
labels_as_tags Set of labels (ID elements) to include as tags in the tags output.
Default is to include all labels.
Tags with empty values will not be included in the tags output.
Set to [] to suppress all generated tags.
Notes:
The value of the name tag, if included, will be the id, not the name.
Unlike other null-label inputs, the initial setting of labels_as_tags cannot be
changed in later chained modules. Attempts to change it will be silently ignored.
set(string)
[
"default"
]
no
logging_level The logging level of the API. One of - OFF, INFO, ERROR string "INFO" no
metrics_enabled A flag to indicate whether to enable metrics collection. bool false no
name ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.
This is the only ID element not also included as a tag.
The "name" tag is set to the full id string. There is no tag with the value of the name input.
string null no
namespace ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique string null no
openapi_config The OpenAPI specification for the API any {} no
permissions_boundary ARN of the policy that is used to set the permissions boundary for the IAM role string "" no
private_link_target_arns A list of target ARNs for VPC Private Link list(string) [] no
regex_replace_chars Terraform regular expression (regex) string.
Characters matching the regex will be removed from the ID elements.
If not set, "/[^a-zA-Z0-9-]/" is used to remove all characters other than hyphens, letters and digits.
string null no
rest_api_policy The IAM policy document for the API. string null no
stage ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' string null no
stage_name The name of the stage string "" no
tags Additional tags (e.g. {'BusinessUnit': 'XYZ'}).
Neither the tag keys nor the tag values will be modified by this module.
map(string) {} no
tenant ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for string null no
xray_tracing_enabled A flag to indicate whether to enable X-Ray tracing. bool false no

Outputs

Name Description
arn The ARN of the REST API
created_date The date the REST API was created
execution_arn The execution ARN part to be used in lambda_permission's source_arn when allowing API Gateway to invoke a Lambda
function, e.g., arn:aws:execute-api:eu-west-2:123456789012:z4675bid1j, which can be concatenated with allowed stage,
method and resource path.The ARN of the Lambda function that will be executed.
id The ID of the REST API
invoke_url The URL to invoke the REST API
root_resource_id The resource ID of the REST API's root
stage_arn The ARN of the gateway stage

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Related Projects

Check out these related projects.

  • terraform-yaml-config - Terraform module to convert local and remote YAML configuration templates into Terraform lists and maps

References

For additional context, refer to some of these links.

  • API Gateway CloudWatch Logging - To enable CloudWatch Logs, you must grant API Gateway permission to read and write logs to CloudWatch for your account.
  • Create a monitor - Create datadog monitors
  • Terraform Datadog role resources - Provides a Datadog role resource. Used to create and manage Datadog roles
  • Datadog permissions - Use this data source to retrieve the list of Datadog permissions by name and their corresponding ID, for use in the role resource
  • Role Based Access Control - Roles categorize users and define what account permissions those users have, such as what data they can read or what account assets they can modify
  • Managing Multiple-Organization Accounts - It is possible to manage multiple child-organizations from one parent-organization account. This is typically used by Managed Service Providers that have customers which should not have access to each others' data

Help

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File a GitHub issue, send us an email or join our Slack Community.

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NOTE: Be sure to merge the latest changes from "upstream" before making a pull request!

Copyright

Copyright © 2017-2023 Cloud Posse, LLC

License

License

See LICENSE for full details.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
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About

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Contributors

Matt Calhoun
Matt Calhoun

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