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

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Introduction

A set of modules for configuring an API Gateway

Usage

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
}

Important

In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

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
data_trace_enabled	Whether data trace logging is enabled for this method, which effects the log entries pushed to Amazon CloudWatch Logs.	bool	false	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
vpc_endpoints	List of VPC Endpoint IDs to attach to the API Gateway	list(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

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

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License

Preamble to the Apache License, Version 2.0

Complete license is available in the LICENSE file.

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