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Use Vapor for the Swift example (#3)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,69 +1,25 @@ | ||
| // swift-tools-version:5.2 | ||
| import Foundation | ||
| import NIO | ||
| import NIOHTTP1 | ||
|
|
||
| struct Version: Codable { | ||
| let version: String | ||
| } | ||
|
|
||
| func JSON<T: Codable>(_ value: T) -> Data { | ||
| return (try? JSONEncoder().encode(value)) ?? Data() | ||
| } | ||
|
|
||
| final class HTTPHandler: ChannelInboundHandler { | ||
| typealias InboundIn = HTTPServerRequestPart | ||
| typealias OutboundOut = HTTPServerResponsePart | ||
|
|
||
| func channelRead(context: ChannelHandlerContext, data: NIOAny) { | ||
| let req = self.unwrapInboundIn(data) | ||
| import Vapor | ||
|
|
||
| switch req { | ||
| case .head(let requestHead): | ||
| if requestHead.uri == "/version" && requestHead.method == .GET { | ||
| let version = Version(version: "1.0.0") | ||
| let response = JSON(version) | ||
|
|
||
| var headers = HTTPHeaders() | ||
| headers.add(name: "Content-Type", value: "application/json") | ||
| headers.add(name: "Content-Length", value: "\(response.count)") | ||
|
|
||
| let responseHead = HTTPResponseHead( | ||
| version: requestHead.version, | ||
| status: .ok, | ||
| headers: headers) | ||
| _ = context.write(self.wrapOutboundOut(.head(responseHead))) | ||
| var buffer = context.channel.allocator.buffer(capacity: response.count) | ||
| buffer.writeBytes(response) | ||
| _ = context.write(self.wrapOutboundOut(.body(.byteBuffer(buffer)))) | ||
| _ = context.writeAndFlush(self.wrapOutboundOut(.end(nil))) | ||
| } else { | ||
| let responseHead = HTTPResponseHead(version: requestHead.version, status: .notFound) | ||
| _ = context.write(self.wrapOutboundOut(.head(responseHead))) | ||
| _ = context.writeAndFlush(self.wrapOutboundOut(.end(nil))) | ||
| } | ||
|
|
||
| case .body: | ||
| break | ||
|
|
||
| case .end: | ||
| break | ||
| } | ||
| } | ||
| struct Version : Content { | ||
| var version: String = "1.0.0" | ||
| } | ||
|
|
||
| let group = MultiThreadedEventLoopGroup(numberOfThreads: System.coreCount) | ||
| let bootstrap = ServerBootstrap(group: group) | ||
| .childChannelInitializer { channel in | ||
| channel.pipeline.configureHTTPServerPipeline().flatMap { | ||
| channel.pipeline.addHandler(HTTPHandler()) | ||
| } | ||
| } | ||
| struct Main { | ||
|
|
||
| defer { | ||
| try? group.syncShutdownGracefully() | ||
| } | ||
| static func main() async { | ||
| do { | ||
| let app = try await Application.make() | ||
| app.get("version", use: { _ in Version() }) | ||
| try await app.execute() | ||
| try await app.asyncShutdown() | ||
| } catch { | ||
| print("got error: \(error)") | ||
| } | ||
| } | ||
|
|
||
| let serverChannel = try bootstrap.bind(host: "127.0.0.1", port: 8000).wait() | ||
| print("listening on http://127.0.0.1:8000") | ||
| try serverChannel.closeFuture.wait() | ||
| } | ||
| _ = await Task{ await Main.main() }.value |