main.swift

//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftAWSLambdaRuntime open source project
//
// Copyright (c) 2024 Apple Inc. and the SwiftAWSLambdaRuntime project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftAWSLambdaRuntime project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//

import AWSLambdaRuntime
import NIOCore

struct SendNumbersWithPause: StreamingLambdaHandler {
    func handle(
        _ event: ByteBuffer,
        responseWriter: some LambdaResponseStreamWriter,
        context: LambdaContext
    ) async throws {
        for i in 1...10 {
            // Send partial data
            try await responseWriter.write(ByteBuffer(string: "\(i)\n"))
            // Perform some long asynchronous work
            try await Task.sleep(for: .milliseconds(1000))
        }
        // All data has been sent. Close off the response stream.
        try await responseWriter.finish()
    }
}

let runtime = try LambdaRuntime.init(handler: SendNumbersWithPause())
try await runtime.run()