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A very simple Finagle HTTP server example (no error handling, etc.)
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| scalaVersion := "2.11.4" | |
| libraryDependencies += "com.twitter" %% "finagle-http" % "6.24.0" |
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| import com.twitter.finagle.Http; | |
| import com.twitter.finagle.ListeningServer; | |
| import com.twitter.finagle.Service; | |
| import com.twitter.finagle.http.HttpMuxer; | |
| import com.twitter.util.Await; | |
| import com.twitter.util.Future; | |
| import java.net.InetSocketAddress; | |
| import static java.nio.charset.StandardCharsets.UTF_8; | |
| import static org.jboss.netty.buffer.ChannelBuffers.copiedBuffer; | |
| import org.jboss.netty.handler.codec.http.*; | |
| public class SimpleHttpServer { | |
| public static void main(String[] args) throws Exception { | |
| HttpMuxer muxService = new HttpMuxer().withHandler("/calc", new CalcService()); | |
| ListeningServer server = Http.serve(new InetSocketAddress(8000), muxService); | |
| System.out.println("The server Alive and Kicking"); | |
| Await.ready(server); | |
| } | |
| } | |
| class CalcService extends Service<HttpRequest, HttpResponse> { | |
| public Future<HttpResponse> apply(HttpRequest req) { | |
| QueryStringDecoder decoder = new QueryStringDecoder(req.getUri()); | |
| // Do your calculation here. | |
| int param = Integer.parseInt(decoder.getParameters().get("param").get(0)); | |
| String result = Integer.toString(param); | |
| StringBuilder content = new StringBuilder(); | |
| content.append("<html><body>"); | |
| content.append(result + "<br/>"); | |
| content.append("</body></html>"); | |
| HttpResponse response = new DefaultHttpResponse( | |
| req.getProtocolVersion(), | |
| HttpResponseStatus.OK | |
| ); | |
| response.setContent(copiedBuffer(content.toString(), UTF_8)); | |
| return Future.value(response); | |
| } | |
| } |
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