private static void startStream(List<String> terms) throws TwitterException {
if (twitter != null) {
twitter.cleanUp();
}
if (esClient != null) {
esClient.close();
esClient = null;
}
play.Configuration pconf = Play.application().configuration();
String elasticSearchCluster = pconf.getString("tweet.elasticsearch.cluster.name");
if (elasticSearchCluster != null) {
Logger.info("Configuring ElasticSearch...");
Settings settings =
ImmutableSettings.settingsBuilder().put("cluster.name", elasticSearchCluster).build();
esClient =
new TransportClient(settings)
.addTransportAddress(
new InetSocketTransportAddress(
pconf.getString("tweet.elasticsearch.transport.host"),
pconf.getInt("tweet.elasticsearch.transport.port")));
} else {
esClient = null;
}
twitter4j.conf.Configuration tconf = Application.getTwitterConfiguration();
TwitterStreamFactory tf = new TwitterStreamFactory(tconf);
twitter = tf.getInstance();
StatusListener l =
new TweetListener(
terms,
esClient,
pconf.getString("tweet.elasticsearch.index"),
pconf.getString("tweet.elasticsearch.type"));
twitter.addListener(l);
String[] tracks = new String[terms.size()];
StringBuffer termsString = new StringBuffer();
for (int i = 0; i < terms.size(); i++) {
tracks[i] = terms.get(i);
if (i != 0) termsString.append(",");
termsString.append(terms.get(i));
}
FilterQuery q = new FilterQuery().track(tracks);
twitter.filter(q);
Logger.info("Starting listening for tweets using terms " + termsString.toString() + "...");
}
// --
@SuppressWarnings(value = "unchecked")
private static Result invokeHandler(
play.api.mvc.Handler handler, Request requestBuilder, long timeout) {
if (handler instanceof play.api.mvc.Action) {
play.api.mvc.Action action = (play.api.mvc.Action) handler;
return wrapScalaResult(action.apply(requestBuilder._underlyingRequest()), timeout);
} else if (handler instanceof JavaHandler) {
return invokeHandler(
((JavaHandler) handler)
.withComponents(
Play.application().injector().instanceOf(JavaHandlerComponents.class)),
requestBuilder,
timeout);
} else {
throw new RuntimeException("This is not a JavaAction and can't be invoked this way.");
}
}