org.cometd.server.http.jetty.JettyCometDResponse Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of cometd-java-server-http-jetty Show documentation
The newest version!
/*
 * Copyright (c) 2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.cometd.server.http.jetty;

import java.nio.ByteBuffer;
import org.cometd.bayeux.Promise;
import org.cometd.server.CometDResponse;
import org.eclipse.jetty.http.HttpHeader;
import org.eclipse.jetty.io.Content;
import org.eclipse.jetty.server.Response;
import org.eclipse.jetty.util.Callback;

class JettyCometDResponse implements CometDResponse {
    private final Response response;
    private Output cometDOutput;

    JettyCometDResponse(Response response) {
        this.response = response;
    }

    @Override
    public void addHeader(String name, String value) {
        response.getHeaders().add(name, value);
    }

    @Override
    public Output getOutput() {
        if (cometDOutput == null) {
            cometDOutput = new JettyCometDOutput(Response.asBufferedSink(response.getRequest(), response));
        }
        return cometDOutput;
    }

    @Override
    public void setContentType(String contentType) {
        response.getHeaders().put(HttpHeader.CONTENT_TYPE, contentType);
    }

    private static class JettyCometDOutput implements Output {
        private final Content.Sink sink;

        private JettyCometDOutput(Content.Sink sink) {
            this.sink = sink;
        }

        @Override
        public void write(boolean last, byte[] bytes, Promise promise) {
            sink.write(last, ByteBuffer.wrap(bytes), new Callback() {
                @Override
                public void succeeded() {
                    promise.succeed(null);
                }

                @Override
                public void failed(Throwable x) {
                    promise.fail(x);
                }
            });
        }
    }
}