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Description:

awscdk.awsamplifyalpha 2.159.0a0

AWS Amplify Construct Library
---

The APIs of higher level constructs in this module are experimental and under active development.
They are subject to non-backward compatible changes or removal in any future version. These are
not subject to the Semantic Versioning model and breaking changes will be
announced in the release notes. This means that while you may use them, you may need to update
your source code when upgrading to a newer version of this package.

The AWS Amplify Console provides a Git-based workflow for deploying and hosting fullstack serverless web applications. A fullstack serverless app consists of a backend built with cloud resources such as GraphQL or REST APIs, file and data storage, and a frontend built with single page application frameworks such as React, Angular, Vue, or Gatsby.
Setting up an app with branches, custom rules and a domain
To set up an Amplify Console app, define an App:
import aws_cdk.aws_codebuild as codebuild

amplify_app = amplify.App(self, "MyApp",
source_code_provider=amplify.GitHubSourceCodeProvider(
owner="<user>",
repository="<repo>",
oauth_token=SecretValue.secrets_manager("my-github-token")
),
build_spec=codebuild.BuildSpec.from_object_to_yaml({
# Alternatively add a `amplify.yml` to the repo
"version": "1.0",
"frontend": {
"phases": {
"pre_build": {
"commands": ["yarn"
]
},
"build": {
"commands": ["yarn build"
]
}
},
"artifacts": {
"base_directory": "public",
"files": -"**/*"
}
}
})
)

To connect your App to GitLab, use the GitLabSourceCodeProvider:
amplify_app = amplify.App(self, "MyApp",
source_code_provider=amplify.GitLabSourceCodeProvider(
owner="<user>",
repository="<repo>",
oauth_token=SecretValue.secrets_manager("my-gitlab-token")
)
)

To connect your App to CodeCommit, use the CodeCommitSourceCodeProvider:
import aws_cdk.aws_codecommit as codecommit

repository = codecommit.Repository(self, "Repo",
repository_name="my-repo"
)

amplify_app = amplify.App(self, "App",
source_code_provider=amplify.CodeCommitSourceCodeProvider(repository=repository)
)

The IAM role associated with the App will automatically be granted the permission
to pull the CodeCommit repository.
Add branches:
# amplify_app: amplify.App

main = amplify_app.add_branch("main") # `id` will be used as repo branch name
dev = amplify_app.add_branch("dev",
performance_mode=True
)
dev.add_environment("STAGE", "dev")

Auto build and pull request preview are enabled by default.
Add custom rules for redirection:
# amplify_app: amplify.App

amplify_app.add_custom_rule({
"source": "/docs/specific-filename.html",
"target": "/documents/different-filename.html",
"status": amplify.RedirectStatus.TEMPORARY_REDIRECT
})

When working with a single page application (SPA), use the
CustomRule.SINGLE_PAGE_APPLICATION_REDIRECT to set up a 200
rewrite for all files to index.html except for the following
file extensions: css, gif, ico, jpg, js, png, txt, svg, woff,
ttf, map, json, webmanifest.
# my_single_page_app: amplify.App

my_single_page_app.add_custom_rule(amplify.CustomRule.SINGLE_PAGE_APPLICATION_REDIRECT)

Add a domain and map sub domains to branches:
# amplify_app: amplify.App
# main: amplify.Branch
# dev: amplify.Branch

domain = amplify_app.add_domain("example.com",
enable_auto_subdomain=True, # in case subdomains should be auto registered for branches
auto_subdomain_creation_patterns=["*", "pr*"]
)
domain.map_root(main) # map main branch to domain root
domain.map_sub_domain(main, "www")
domain.map_sub_domain(dev)

To specify a custom certificate for your custom domain use the customCertificate property:
# custom_certificate: acm.Certificate
# amplify_app: amplify.App

domain = amplify_app.add_domain("example.com",
custom_certificate=custom_certificate
)

Restricting access
Password protect the app with basic auth by specifying the basicAuth prop.
Use BasicAuth.fromCredentials when referencing an existing secret:
amplify_app = amplify.App(self, "MyApp",
source_code_provider=amplify.GitHubSourceCodeProvider(
owner="<user>",
repository="<repo>",
oauth_token=SecretValue.secrets_manager("my-github-token")
),
basic_auth=amplify.BasicAuth.from_credentials("username", SecretValue.secrets_manager("my-github-token"))
)

Use BasicAuth.fromGeneratedPassword to generate a password in Secrets Manager:
amplify_app = amplify.App(self, "MyApp",
source_code_provider=amplify.GitHubSourceCodeProvider(
owner="<user>",
repository="<repo>",
oauth_token=SecretValue.secrets_manager("my-github-token")
),
basic_auth=amplify.BasicAuth.from_generated_password("username")
)

Basic auth can be added to specific branches:
# amplify_app: amplify.App

amplify_app.add_branch("feature/next",
basic_auth=amplify.BasicAuth.from_generated_password("username")
)

Automatically creating and deleting branches
Use the autoBranchCreation and autoBranchDeletion props to control creation/deletion
of branches:
amplify_app = amplify.App(self, "MyApp",
source_code_provider=amplify.GitHubSourceCodeProvider(
owner="<user>",
repository="<repo>",
oauth_token=SecretValue.secrets_manager("my-github-token")
),
auto_branch_creation=amplify.AutoBranchCreation( # Automatically connect branches that match a pattern set
patterns=["feature/*", "test/*"]),
auto_branch_deletion=True
)

Adding custom response headers
Use the customResponseHeaders prop to configure custom response headers for an Amplify app:
amplify_app = amplify.App(self, "App",
source_code_provider=amplify.GitHubSourceCodeProvider(
owner="<user>",
repository="<repo>",
oauth_token=SecretValue.secrets_manager("my-github-token")
),
custom_response_headers=[amplify.CustomResponseHeader(
pattern="*.json",
headers={
"custom-header-name-1": "custom-header-value-1",
"custom-header-name-2": "custom-header-value-2"
}
), amplify.CustomResponseHeader(
pattern="/path/*",
headers={
"custom-header-name-1": "custom-header-value-2"
}
)
]
)

Configure server side rendering when hosting app
Setting the platform field on the Amplify App construct can be used to control whether the app will host only static assets or server side rendered assets in addition to static. By default, the value is set to WEB (static only), however, server side rendering can be turned on by setting to WEB_COMPUTE as follows:
amplify_app = amplify.App(self, "MyApp",
platform=amplify.Platform.WEB_COMPUTE
)

Cache Config
Amplify uses Amazon CloudFront to manage the caching configuration for your hosted applications. A cache configuration is applied to each app to optimize for the best performance.
Setting the cacheConfigType field on the Amplify App construct can be used to control cache configguration. By default, the value is set to AMPLIFY_MANAGED. If you want to exclude all cookies from the cache key, set AMPLIFY_MANAGED_NO_COOKIES.
For more information, see Managing the cache configuration for an app.
amplify_app = amplify.App(self, "MyApp",
cache_config_type=amplify.CacheConfigType.AMPLIFY_MANAGED_NO_COOKIES
)

Deploying Assets
sourceCodeProvider is optional; when this is not specified the Amplify app can be deployed to using .zip packages. The asset property can be used to deploy S3 assets to Amplify as part of the CDK:
import aws_cdk.aws_s3_assets as assets

# asset: assets.Asset
# amplify_app: amplify.App

branch = amplify_app.add_branch("dev", asset=asset)