mirror of
https://github.com/swift-server/swift-aws-lambda-runtime.git
synced 2026-05-03 07:22:27 +00:00
Sébastien Stormacq
97583a78c2
This PR adds a new example demonstrating how to build a Lambda function that handles requests from multiple sources (Application Load Balancer and API Gateway V2) using a single handler. ### What's New **New Example: `Examples/MultiSourceAPI`** A Lambda function that: - Implements `StreamingLambdaHandler` to accept raw `ByteBuffer` events - Dynamically decodes events as either `ALBTargetGroupRequest` or `APIGatewayV2Request` - Returns appropriate responses based on the detected event source - Demonstrates handling multiple AWS service integrations with a single function ### Key Features - **Type-safe event detection**: Uses Swift's `Decodable` to identify the event source at runtime - **Streaming response**: Implements `StreamingLambdaHandler` for efficient response handling - **Complete deployment**: Includes SAM template with both ALB and API Gateway V2 infrastructure - **Production-ready**: Full VPC setup with subnets, security groups, and load balancer configuration ### Files Added - `Examples/MultiSourceAPI/Sources/main.swift` - Lambda handler implementation - `Examples/MultiSourceAPI/Package.swift` - Swift package configuration - `Examples/MultiSourceAPI/template.yaml` - SAM deployment template with ALB and API Gateway V2 - `Examples/MultiSourceAPI/README.md` - Documentation with build, deploy, and test instructions - Updated CI to include the new example ### Use Case This pattern is useful when you want to: - Expose the same Lambda function through multiple AWS services - Reduce code duplication by handling similar requests from different sources - Maintain a single codebase for multi-channel APIs --------- Co-authored-by: Sebastien Stormacq <stormacq@amazon.lu> Co-authored-by: Josh Elkins <jbelkins@users.noreply.github.com>
56 lines
1.7 KiB
Swift
56 lines
1.7 KiB
Swift
// swift-tools-version:6.2
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import PackageDescription
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// needed for CI to test the local version of the library
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import struct Foundation.URL
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let package = Package(
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name: "MultiSourceAPI",
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platforms: [.macOS(.v15)],
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products: [
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.executable(name: "MultiSourceAPI", targets: ["MultiSourceAPI"])
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],
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dependencies: [
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.package(url: "https://github.com/awslabs/swift-aws-lambda-runtime.git", from: "2.0.0"),
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.package(url: "https://github.com/awslabs/swift-aws-lambda-events.git", from: "1.0.0"),
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],
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targets: [
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.executableTarget(
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name: "MultiSourceAPI",
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dependencies: [
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.product(name: "AWSLambdaRuntime", package: "swift-aws-lambda-runtime"),
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.product(name: "AWSLambdaEvents", package: "swift-aws-lambda-events"),
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],
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path: "Sources"
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)
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]
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)
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if let localDepsPath = Context.environment["LAMBDA_USE_LOCAL_DEPS"],
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localDepsPath != "",
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let v = try? URL(fileURLWithPath: localDepsPath).resourceValues(forKeys: [.isDirectoryKey]),
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v.isDirectory == true
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{
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let indexToRemove = package.dependencies.firstIndex { dependency in
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switch dependency.kind {
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case .sourceControl(
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name: _,
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location: "https://github.com/awslabs/swift-aws-lambda-runtime.git",
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requirement: _
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):
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return true
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default:
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return false
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}
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}
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if let indexToRemove {
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package.dependencies.remove(at: indexToRemove)
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}
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print("[INFO] Compiling against swift-aws-lambda-runtime located at \(localDepsPath)")
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package.dependencies += [
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.package(name: "swift-aws-lambda-runtime", path: localDepsPath)
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]
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}
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