separate protocol for simpler lambda (no init)

Author: tomerd

Examples/Benchmark/BenchmarkHandler.swift

@@ -22,9 +22,6 @@ import NIOCore
 
 @main
 struct BenchmarkHandler: EventLoopLambdaHandler {
-    typealias Event = String
-    typealias Output = String
-
     static func makeHandler(context: LambdaInitializationContext) -> EventLoopFuture<Self> {
         context.eventLoop.makeSucceededFuture(BenchmarkHandler())
     }

Examples/Deployment/Sources/Benchmark/BenchmarkHandler.swift

@@ -22,9 +22,6 @@ import NIOCore
 
 @main
 struct BenchmarkHandler: EventLoopLambdaHandler {
-    typealias Event = String
-    typealias Output = String
-
     static func makeHandler(context: LambdaInitializationContext) -> EventLoopFuture<Self> {
         context.eventLoop.makeSucceededFuture(BenchmarkHandler())
     }

Examples/Deployment/Sources/HelloWorld/HelloWorldHandler.swift

@@ -16,7 +16,7 @@ import AWSLambdaRuntime
 
 // introductory example, the obligatory "hello, world!"
 @main
-struct HelloWorldHandler: LambdaHandler {
+struct HelloWorldHandler: SimpleLambdaHandler {
     func handle(_ event: String, context: LambdaContext) async throws -> String {
         "hello, world"
     }

Examples/Echo/Lambda.swift

@@ -17,7 +17,7 @@ import AWSLambdaRuntime
 // in this example we are receiving and responding with strings
 
 @main
-struct MyLambda: LambdaHandler {
+struct MyLambda: SimpleLambdaHandler {
     func handle(_ input: String, context: LambdaContext) async throws -> String {
         // as an example, respond with the input's reversed
         String(input.reversed())

Examples/ErrorHandling/Lambda.swift

@@ -17,10 +17,7 @@ import AWSLambdaRuntime
 // MARK: - Run Lambda
 
 @main
-struct MyLambda: LambdaHandler {
-    typealias Event = Request
-    typealias Output = Response
-
+struct MyLambda: SimpleLambdaHandler {
     func handle(_ request: Request, context: LambdaContext) async throws -> Response {
         // switch over the error type "requested" by the request, and trigger such error accordingly
         switch request.error {

Examples/Foundation/Lambda.swift

@@ -25,9 +25,6 @@ import Logging
 
 @main
 struct MyLambda: LambdaHandler {
-    typealias Event = Request
-    typealias Output = [Exchange]
-
     let calculator: ExchangeRatesCalculator
 
     init(context: LambdaInitializationContext) async throws {

Examples/JSON/Lambda.swift

@@ -26,10 +26,7 @@ struct Response: Codable {
 // codables to model your request and response objects
 
 @main
-struct MyLambda: LambdaHandler {
-    typealias Event = Request
-    typealias Output = Response
-
+struct MyLambda: SimpleLambdaHandler {
     func handle(_ event: Request, context: LambdaContext) async throws -> Response {
         // as an example, respond with the input event's reversed body
         Response(body: String(event.body.reversed()))

Examples/LocalDebugging/MyLambda/Lambda.swift

@@ -19,10 +19,7 @@ import Shared
 // a local server simulator which will allow local debugging
 
 @main
-struct MyLambda: LambdaHandler {
-    typealias Event = Request
-    typealias Output = Response
-
+struct MyLambda: SimpleLambdaHandler {
     func handle(_ request: Request, context: LambdaContext) async throws -> Response {
         // TODO: something useful
         Response(message: "Hello, \(request.name)!")

Examples/Testing/Sources/Lambda.swift

@@ -17,7 +17,7 @@ import AWSLambdaRuntime
 // in this example we are receiving and responding with strings
 
 @main
-struct MyLambda: LambdaHandler {
+struct MyLambda: SimpleLambdaHandler {
     func handle(_ event: String, context: LambdaContext) async throws -> String {
         // as an example, respond with the event's reversed body
         String(event.reversed())

Sources/AWSLambdaRuntimeCore/Lambda+String.swift

@@ -19,7 +19,7 @@ import NIOCore
 extension LambdaHandler where Event == String {
     /// Implementation of a `ByteBuffer` to `String` decoding.
     @inlinable
-    public func decode(buffer: ByteBuffer) throws -> String {
+    public func decode(buffer: ByteBuffer) throws -> Event {
         guard let value = buffer.getString(at: buffer.readerIndex, length: buffer.readableBytes) else {
             throw CodecError.invalidString
         }
@@ -31,7 +31,7 @@ extension LambdaHandler where Event == String {
 extension LambdaHandler where Output == String {
     /// Implementation of `String` to `ByteBuffer` encoding.
     @inlinable
-    public func encode(value: String, into buffer: inout ByteBuffer) throws {
+    public func encode(value: Output, into buffer: inout ByteBuffer) throws {
         buffer.writeString(value)
     }
 }
@@ -41,7 +41,7 @@ extension LambdaHandler where Output == String {
 extension EventLoopLambdaHandler where Event == String {
     /// Implementation of `String` to `ByteBuffer` encoding.
     @inlinable
-    public func decode(buffer: ByteBuffer) throws -> String {
+    public func decode(buffer: ByteBuffer) throws -> Event {
         guard let value = buffer.getString(at: buffer.readerIndex, length: buffer.readableBytes) else {
             throw CodecError.invalidString
         }
@@ -52,7 +52,7 @@ extension EventLoopLambdaHandler where Event == String {
 extension EventLoopLambdaHandler where Output == String {
     /// Implementation of a `ByteBuffer` to `String` decoding.
     @inlinable
-    public func encode(value: String, into buffer: inout ByteBuffer) throws {
+    public func encode(value: Output, into buffer: inout ByteBuffer) throws {
         buffer.writeString(value)
     }
 }