gistfile1.java

package com.kevinherron.campfire.streaming;

import java.util.concurrent.Future;

import org.json.JSONTokener;

import com.kevinherron.campfire.api.CampfireException;
import com.kevinherron.campfire.api.LoginCredentials;
import com.ning.http.client.AsyncHandler;
import com.ning.http.client.AsyncHttpClient;
import com.ning.http.client.AsyncHttpClientConfig;
import com.ning.http.client.HttpResponseBodyPart;
import com.ning.http.client.HttpResponseHeaders;
import com.ning.http.client.HttpResponseStatus;
import com.ning.http.client.Realm;
import com.ning.http.client.Request;

/**
 * GET https://streaming.campfirenow.com/room/#{id}/live.json
 * 
 * @author Kevin Herron <kevinherron@gmail.com>
 */

public class RoomStreamer {

    private volatile boolean keepStreaming = false;

    private Future<?> requestFuture;

    private AsyncHttpClient httpClient;
    private Realm realm;

    private final int roomId;

    public RoomStreamer(LoginCredentials credentials, int roomId) throws CampfireException {
        this.roomId = roomId;

        AsyncHttpClientConfig config = new AsyncHttpClientConfig.Builder()
                .setRequestTimeoutInMs(Integer.MAX_VALUE)
                .setIdleConnectionTimeoutInMs(Integer.MAX_VALUE)
                .build();

        httpClient = new AsyncHttpClient(config);

        realm = new Realm.RealmBuilder()
                .setPrincipal(credentials.getApiKey())
                .setPassword("X")
                .build();

        start();
    }

    private void start() throws CampfireException {
        keepStreaming = true;

        try {
            Request request = httpClient
                        .prepareGet(String.format("https://streaming.campfirenow.com/room/%s/live.json", roomId))
                        .setRealm(realm)
                        .build();

            Handler handler = new Handler();

            requestFuture = httpClient.executeRequest(request, handler);
        } catch (Exception e) {
            // TODO log error
            throw new CampfireException(e);
        }
    }

    public synchronized void stop() {
        keepStreaming = false;

        if (requestFuture != null) {
            requestFuture.cancel(true);
        }

        if (httpClient != null) {
            System.out.println("Closing RoomStreamer client...");
            httpClient.close();
            httpClient = null;
            System.out.println("Done.");
        }
    }

    private class Handler implements AsyncHandler<String> {

        @Override
        public void onThrowable(Throwable t) {
            // TODO log error
            System.err.println(t);

            if (keepStreaming) {
                // TODO reschedule ourselves?
            }
        }

        @Override
        public STATE onBodyPartReceived(HttpResponseBodyPart bodyPart)
                throws Exception {
            if (keepStreaming) {
                String json = new String(bodyPart.getBodyPartBytes());

                JSONTokener tokener = new JSONTokener(json);

                try {
                    while (tokener.more()) {
                        Object o = tokener.nextValue();
                        System.out.println(o.getClass().getSimpleName());
                        System.out.println(o);
                    }
                } catch (Exception e) {
                    // Probably the " " string sent to keep the connection alive...
                }

                return STATE.CONTINUE;
            } else {
                System.out.println("onBodyPartReceived aborting...");
                return STATE.ABORT;
            }
        }

        @Override
        public STATE onStatusReceived(HttpResponseStatus responseStatus)
                throws Exception {
            if (keepStreaming) {
                return STATE.CONTINUE;
            } else {
                System.out.println("onStatusReceived aborting...");
                return STATE.ABORT;
            }
        }

        @Override
        public STATE onHeadersReceived(HttpResponseHeaders headers) throws Exception {
            if (keepStreaming) {
                return STATE.CONTINUE;
            } else {
                System.out.println("onHeadersReceived aborting...");
                return STATE.ABORT;
            }
        }

        @Override
        public String onCompleted() throws Exception {
            // Not really interested in the end result... just the stuff we get as it's completing.

            return null;
        }

    }
}