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Module: amplify-app

Terraform module to provision AWS Amplify apps, backend environments, branches, domain associations, and webhooks.

Usage​

For a complete example, see examples/complete.

For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.

data "aws_ssm_parameter" "github_pat" {
  name            = var.github_personal_access_token_secret_path
  with_decryption = true
}

module "amplify_app" {
  source  = "cloudposse/amplify-app/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version = "x.x.x"

  access_token = data.aws_ssm_parameter.github_pat.value

  description  = "Test Amplify App"
  repository   = "https://github.com/cloudposse/amplify-test2"
  platform     = "WEB"

  enable_auto_branch_creation = false
  enable_branch_auto_build    = true
  enable_branch_auto_deletion = true
  enable_basic_auth           = false

  iam_service_role_enabled    = true

  iam_service_role_actions = [
    "logs:CreateLogStream",
    "logs:CreateLogGroup",
    "logs:DescribeLogGroups",
    "logs:PutLogEvents"
  ]

  auto_branch_creation_patterns = [
    "*",
    "*/**"
  ]

  auto_branch_creation_config = {
    # Enable auto build for the created branches
    enable_auto_build = true
  }

  # The build spec for React
  build_spec = <<-EOT
    version: 0.1
    frontend:
      phases:
        preBuild:
          commands:
            - yarn install
        build:
          commands:
            - yarn run build
      artifacts:
        baseDirectory: build
        files:
          - '**/*'
      cache:
        paths:
          - node_modules/**/*
  EOT

  custom_rules = [
    {
      source = "/<*>"
      status = "404"
      target = "/index.html"
    }
  ]

  environment_variables = {
    ENV = "test"
  }

  environments = {
    main = {
      branch_name                 = "main"
      enable_auto_build           = true
      backend_enabled             = false
      enable_performance_mode     = true
      enable_pull_request_preview = false
      framework                   = "React"
      stage                       = "PRODUCTION"
    }
    dev = {
      branch_name                 = "dev"
      enable_auto_build           = true
      backend_enabled             = false
      enable_performance_mode     = false
      enable_pull_request_preview = true
      framework                   = "React"
      stage                       = "DEVELOPMENT"
    }
  }

  domains = {
    "test.net" = {
      enable_auto_sub_domain = true
      wait_for_verification  = false
      sub_domain = [
        {
          branch_name = "main"
          prefix      = ""
        },
        {
          branch_name = "dev"
          prefix      = "dev"
        }
      ]
    }
  }

  context = module.label.context
}

Examples​

Here is an example of using this module:

Variables​

Required Variables​

Optional Variables​

access_token (string) optional

The personal access token for a third-party source control system for the Amplify app.
The personal access token is used to create a webhook and a read-only deploy key. The token is not stored.
Make sure that the account where the token is created has access to the repository.



Default value: null

auto_branch_creation_config optional

The automated branch creation configuration for the Amplify app


Type:

object({
basic_auth_credentials        = optional(string)
build_spec                    = optional(string)
enable_auto_build             = optional(bool)
enable_basic_auth             = optional(bool)
enable_performance_mode       = optional(bool)
enable_pull_request_preview   = optional(bool)
environment_variables         = optional(map(string))
framework                     = optional(string)
pull_request_environment_name = optional(string)
stage                         = optional(string)
})

Default value: null

auto_branch_creation_patterns (list(string)) optional

The automated branch creation glob patterns for the Amplify app


Default value: [ ]

basic_auth_credentials (string) optional

The credentials for basic authorization for the Amplify app


Default value: null

build_spec (string) optional

The build specification (build spec) for the Amplify app.
If not provided then it will use the amplify.yml at the root of your project / branch.



Default value: null

custom_rules optional

The custom rules to apply to the Amplify App


Type:

list(object({
condition = optional(string)
source    = string
status    = optional(string)
target    = string
}))

Default value: [ ]

description (string) optional

The description for the Amplify app


Default value: null

domain_config optional

DEPRECATED: Use the domains variable instead.
Amplify custom domain configuration.



Type:

object({
domain_name            = string
enable_auto_sub_domain = optional(bool, false)
wait_for_verification  = optional(bool, false)
sub_domain = list(object({
  branch_name = string
  prefix      = string
}))
})

Default value: null

domains optional

Amplify custom domain configurations


Type:

map(object({
enable_auto_sub_domain = optional(bool, false)
wait_for_verification  = optional(bool, false)
sub_domain = list(object({
  branch_name = string
  prefix      = string
}))
}))

Default value: { }

enable_auto_branch_creation (bool) optional

Enables automated branch creation for the Amplify app


Default value: false

enable_basic_auth (bool) optional

Enables basic authorization for the Amplify app.
This will apply to all branches that are part of this app.



Default value: false

enable_branch_auto_build (bool) optional

Enables auto-building of branches for the Amplify App


Default value: true

enable_branch_auto_deletion (bool) optional

Automatically disconnects a branch in the Amplify Console when you delete a branch from your Git repository


Default value: false

environment_variables (map(string)) optional

The environment variables for the Amplify app


Default value: { }

environments optional

The configuration of the environments for the Amplify App


Type:

map(object({
branch_name                   = optional(string)
basic_auth_credentials        = optional(string)
backend_enabled               = optional(bool, false)
environment_name              = optional(string)
deployment_artifacts          = optional(string)
stack_name                    = optional(string)
display_name                  = optional(string)
description                   = optional(string)
enable_auto_build             = optional(bool)
enable_basic_auth             = optional(bool)
enable_notification           = optional(bool)
enable_performance_mode       = optional(bool)
enable_pull_request_preview   = optional(bool)
environment_variables         = optional(map(string))
framework                     = optional(string)
pull_request_environment_name = optional(string)
stage                         = optional(string)
ttl                           = optional(number)
webhook_enabled               = optional(bool, false)
}))

Default value: { }

iam_service_role_actions (list(string)) optional

List of IAM policy actions for the AWS Identity and Access Management (IAM) service role for the Amplify app.
If not provided, the default set of actions will be used for the role if the variable iam_service_role_enabled is set to true.



Default value: [ ]

iam_service_role_arn (list(string)) optional

The AWS Identity and Access Management (IAM) service role for the Amplify app.
If not provided, a new role will be created if the variable iam_service_role_enabled is set to true.



Default value: [ ]

iam_service_role_enabled (bool) optional

Flag to create the IAM service role for the Amplify app


Default value: false

oauth_token (string) optional

The OAuth token for a third-party source control system for the Amplify app.
The OAuth token is used to create a webhook and a read-only deploy key.
The OAuth token is not stored.



Default value: null

platform (string) optional

The platform or framework for the Amplify app


Default value: "WEB"

repository (string) optional

The repository for the Amplify app


Default value: null

Context Variables​

The following variables are defined in the context.tf file of this module and part of the terraform-null-label pattern.

additional_tag_map (map(string)) optional

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.


Required: No

Default value: { }

attributes (list(string)) optional

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.


Required: No

Default value: [ ]

context (any) optional

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.


Required: No

Default value:

{
  "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
}
delimiter (string) optional

Delimiter to be used between ID elements.
Defaults to - (hyphen). Set to "" to use no delimiter at all.


Required: No

Default value: null

descriptor_formats (any) optional

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).


Required: No

Default value: { }

enabled (bool) optional

Set to false to prevent the module from creating any resources
Required: No

Default value: null

environment (string) optional

ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'
Required: No

Default value: null

id_length_limit (number) optional

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.


Required: No

Default value: null

label_key_case (string) optional

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.


Required: No

Default value: null

label_order (list(string)) optional

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.


Required: No

Default value: null

label_value_case (string) optional

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.


Required: No

Default value: null

labels_as_tags (set(string)) optional

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.


Required: No

Default value:

[
  "default"
]
name (string) optional

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.


Required: No

Default value: null

namespace (string) optional

ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique
Required: No

Default value: null

regex_replace_chars (string) optional

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.


Required: No

Default value: null

stage (string) optional

ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'
Required: No

Default value: null

tags (map(string)) optional

Additional tags (e.g. {'BusinessUnit': 'XYZ'}).
Neither the tag keys nor the tag values will be modified by this module.


Required: No

Default value: { }

tenant (string) optional

ID element (Rarely used, not included by default). A customer identifier, indicating who this instance of a resource is for
Required: No

Default value: null

Outputs​

arn

Amplify App ARN

backend_environments

Created backend environments

branch_names

The names of the created Amplify branches

default_domain

Amplify App domain (non-custom)

domain_associations

Created domain associations

id

Amplify App Id

name

Amplify App name

webhooks

Created webhooks

Dependencies​

Requirements​

  • terraform, version: >= 1.3.0
  • aws, version: >= 4.0

Providers​

  • aws, version: >= 4.0

Modules​

NameVersionSourceDescription
role0.18.0cloudposse/iam-role/awsn/a
this0.25.0cloudposse/label/nulln/a

Resources​

The following resources are used by this module:

Data Sources​

The following data sources are used by this module: