package Published;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HeaderElement;
import org.apache.http.HeaderElementIterator;
import org.apache.http.HttpResponse;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.ConnectionKeepAliveStrategy;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.conn.params.ConnPerRouteBean;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.message.BasicHeaderElementIterator;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.protocol.HttpContext;
import org.apache.http.NameValuePair;
public class Publisher {
DefaultHttpClient httpClient = null;
public Publisher() {
HttpParams params = new BasicHttpParams();
ConnManagerParams.setMaxTotalConnections(params, 200);
ConnPerRouteBean connPerRoute = new ConnPerRouteBean(20);
connPerRoute.setDefaultMaxPerRoute(50);
ConnManagerParams.setMaxConnectionsPerRoute(params, connPerRoute);
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(new Scheme("http", PlainSocketFactory
.getSocketFactory(), 80));
ClientConnectionManager cm = new ThreadSafeClientConnManager(params,
schemeRegistry);
httpClient = new DefaultHttpClient(cm, params);
httpClient.setKeepAliveStrategy(new ConnectionKeepAliveStrategy() {
public long getKeepAliveDuration(HttpResponse response,
HttpContext context) {
HeaderElementIterator it = new BasicHeaderElementIterator(
response.headerIterator(HTTP.CONN_KEEP_ALIVE));
while (it.hasNext()) {
HeaderElement he = it.nextElement();
String param = he.getName();
String value = he.getValue();
if (value != null && param.equalsIgnoreCase("timeout")) {
try {
return Long.parseLong(value) * 1000;
} catch (NumberFormatException ignore) {
}
}
}
// default keepalive is 60 seconds. This is higher than usual
// since the number of hubs it should be talking to should be
// small
return 30 * 1000;
}
});
}
/*
* @throws IOException If an input or output exception occurred
*
* @param The Hub address you want to publish it to
*
* @param The topic_url you want to publish
*
* @return HTTP Response code. 200, 202, 204 is ok. Anything else smells like trouble
*/
public int execute(String hub, String topic_url) throws Exception {
if ((hub != null) && (topic_url != null)) {
// URL should validate if the strings are really URLs. Will throw
// Exception if it isn't
@SuppressWarnings("unused")
URL verifying_topic_url = new URL(topic_url);
@SuppressWarnings("unused")
URL hub_url = new URL(hub);
HttpPost httppost = new HttpPost(hub);
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
nvps.add(new BasicNameValuePair("hub.mode", "publish"));
nvps.add(new BasicNameValuePair("hub.url", topic_url));
httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
httppost.setHeader("Content-type","application/x-www-form-urlencoded");
httppost.setHeader("User-agent", "pubsubhubbub 0.3");
GetThread thread = new GetThread(httpClient, httppost);
thread.start();
thread.join();
return thread.httpresponse.getStatusLine().getStatusCode();
}
return 400;
}
}