Created
April 29, 2014 04:19
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A URI based router for RxNetty, How Awesome :)
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package io.reactivex.netty.examples.java; | |
import io.netty.buffer.ByteBuf; | |
import io.netty.buffer.ByteBufAllocator; | |
import io.netty.handler.codec.http.HttpHeaders; | |
import io.reactivex.netty.RxNetty; | |
import io.reactivex.netty.protocol.http.server.HttpServerRequest; | |
import io.reactivex.netty.protocol.http.server.HttpServerResponse; | |
import io.reactivex.netty.protocol.http.server.RequestHandler; | |
import io.reactivex.netty.protocol.text.sse.ServerSentEvent; | |
import io.reactivex.netty.serialization.ContentTransformer; | |
import rx.Observable; | |
import rx.functions.Func1; | |
import java.util.concurrent.TimeUnit; | |
/** | |
* @author Nitesh Kant | |
*/ | |
public final class HttpAwesomeServer { | |
public static void main(String[] args) { | |
RxNetty.createHttpServer(8080, new RequestHandler<ByteBuf, ByteBuf>() { | |
@Override | |
public Observable<Void> handle(HttpServerRequest<ByteBuf> request, | |
final HttpServerResponse<ByteBuf> response) { | |
String uri = request.getUri(); | |
if ("/sse".equals(uri)) { | |
response.getHeaders().add(HttpHeaders.Names.CONTENT_TYPE, "text/eventstream"); | |
return Observable.interval(1, TimeUnit.SECONDS).flatMap(new Func1<Long, Observable<Void>>() { | |
@Override | |
public Observable<Void> call(Long aLong) { | |
return response.writeAndFlush(new ServerSentEvent("blah", "data", "Hey Buddy " + aLong), | |
new SSETransformer()); | |
} | |
}); | |
} else { | |
response.getHeaders().add(HttpHeaders.Names.CONTENT_TYPE, "text/plain"); | |
return response.writeStringAndFlush("Hello! You don't need SSE, do you?"); | |
} | |
} | |
}).startAndWait(); | |
} | |
private static class SSETransformer implements ContentTransformer<ServerSentEvent> { | |
@Override | |
public ByteBuf transform(ServerSentEvent toTransform, ByteBufAllocator byteBufAllocator) { | |
// NOTE TO MYSELF: I SHOULD MOVE THIS TO ServerSentEvent AS toByteBuf() | |
StringBuilder eventBuilder = new StringBuilder(); | |
eventBuilder.append(toTransform.getEventName()); | |
eventBuilder.append(": "); | |
eventBuilder.append(toTransform.getEventData()); | |
eventBuilder.append("\n\n"); | |
String data = eventBuilder.toString(); | |
return byteBufAllocator.buffer(data.length()) | |
.writeBytes(data.getBytes()); | |
} | |
} | |
} |
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