Integrations for AWS APIGateway V2
Project description
AWS APIGatewayv2 Integrations
---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 This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.
Table of Contents
HTTP APIs
Integrations connect a route to backend resources. HTTP APIs support Lambda proxy, AWS service, and HTTP proxy integrations. HTTP proxy integrations are also known as private integrations.
Lambda
Lambda integrations enable integrating an HTTP API route with a Lambda function. When a client invokes the route, the API Gateway service forwards the request to the Lambda function and returns the function's response to the client.
The API Gateway service will invoke the lambda function with an event payload of a specific format. The service expects the function to respond in a specific format. The details on this format is available at Working with AWS Lambda proxy integrations.
The following code configures a route GET /books
with a Lambda proxy integration.
# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
books_fn = lambda_.Function(stack, "BooksDefaultFn", ...)
books_integration = LambdaProxyIntegration(
handler=books_default_fn
)
http_api = HttpApi(stack, "HttpApi")
http_api.add_routes(
path="/books",
methods=[HttpMethod.GET],
integration=books_integration
)
HTTP Proxy
HTTP Proxy integrations enables connecting an HTTP API route to a publicly routable HTTP endpoint. When a client invokes the route, the API Gateway service forwards the entire request and response between the API Gateway endpoint and the integrating HTTP endpoint. More information can be found at Working with HTTP proxy integrations.
The following code configures a route GET /books
with an HTTP proxy integration to an HTTP endpoint
get-books-proxy.myproxy.internal
.
# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
books_integration = HttpProxyIntegration(
url="https://get-books-proxy.myproxy.internal"
)
http_api = HttpApi(stack, "HttpApi")
http_api.add_routes(
path="/books",
methods=[HttpMethod.GET],
integration=books_integration
)
Private Integration
Private integrations enable integrating an HTTP API route with private resources in a VPC, such as Application Load Balancers or Amazon ECS container-based applications. Using private integrations, resources in a VPC can be exposed for access by clients outside of the VPC.
The following integrations are supported for private resources in a VPC.
Application Load Balancer
The following code is a basic application load balancer private integration of HTTP API:
# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
vpc = ec2.Vpc(stack, "VPC")
lb = elbv2.ALB(stack, "lb", vpc=vpc)
listener = lb.add_listener("listener", port=80)
listener.add_targets("target",
port=80
)
http_endpoint = HttpApi(stack, "HttpProxyPrivateApi",
default_integration=HttpAlbIntegration(
listener=listener
)
)
When an imported load balancer is used, the vpc
option must be specified for HttpAlbIntegration
.
Network Load Balancer
The following code is a basic network load balancer private integration of HTTP API:
# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
vpc = ec2.Vpc(stack, "VPC")
lb = elbv2.NLB(stack, "lb", vpc=vpc)
listener = lb.add_listener("listener", port=80)
listener.add_targets("target",
port=80
)
http_endpoint = HttpApi(stack, "HttpProxyPrivateApi",
default_integration=HttpNlbIntegration(
listener=listener
)
)
When an imported load balancer is used, the vpc
option must be specified for HttpNlbIntegration
.
Cloud Map Service Discovery
The following code is a basic discovery service private integration of HTTP API:
# Example automatically generated without compilation. See https://github.com/aws/jsii/issues/826
vpc = ec2.Vpc(stack, "VPC")
vpc_link = VpcLink(stack, "VpcLink", vpc=vpc)
namespace = servicediscovery.PrivateDnsNamespace(stack, "Namespace",
name="boobar.com",
vpc=vpc
)
service = namespace.create_service("Service")
http_endpoint = HttpApi(stack, "HttpProxyPrivateApi",
default_integration=HttpServiceDiscoveryIntegration(
vpc_link=vpc_link,
service=service
)
)
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