package com.espertech.esperio.http.core;
import com.espertech.esper.core.service.EPServiceProviderSPI;
import com.espertech.esperio.http.EventLogger;
import com.espertech.esperio.http.config.Service;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.DefaultHttpResponseFactory;
import org.apache.http.impl.nio.DefaultServerIOEventDispatch;
import org.apache.http.impl.nio.reactor.DefaultListeningIOReactor;
import org.apache.http.nio.protocol.BufferingHttpServiceHandler;
import org.apache.http.nio.reactor.IOEventDispatch;
import org.apache.http.nio.reactor.ListeningIOReactor;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.*;
import java.io.IOException;
import java.net.InetSocketAddress;
public class EsperHttpServiceNIO extends EsperHttpServiceBase {
private static Log log = LogFactory.getLog(EsperHttpServiceNIO.class);
private EsperHttpServiceNIORunnable runnable;
private Thread reactorThread;
private ListeningIOReactor ioReactor;
public EsperHttpServiceNIO(String serviceName, Service value) {
super(serviceName, value);
}
public void start(EPServiceProviderSPI engine) {
HttpParams parameters = new BasicHttpParams();
parameters
.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 5000)
.setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024)
.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false)
.setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true)
.setParameter(CoreProtocolPNames.ORIGIN_SERVER, "HttpComponents/1.1");
BasicHttpProcessor httpproc = new BasicHttpProcessor();
httpproc.addInterceptor(new ResponseDate());
httpproc.addInterceptor(new ResponseServer());
httpproc.addInterceptor(new ResponseContent());
httpproc.addInterceptor(new ResponseConnControl());
BufferingHttpServiceHandler handler = new BufferingHttpServiceHandler(
httpproc,
new DefaultHttpResponseFactory(),
new DefaultConnectionReuseStrategy(),
parameters);
// Set up request handlers
HttpRequestHandlerRegistry reqistry = setupRegistry(engine);
handler.setHandlerResolver(reqistry);
// Provide an event logger
handler.setEventListener(new EventLogger());
IOEventDispatch ioEventDispatch = new DefaultServerIOEventDispatch(handler, parameters);
try {
ioReactor = new DefaultListeningIOReactor(2, parameters);
ioReactor.listen(new InetSocketAddress(this.getServiceConfig().getPort()));
}
catch (IOException e) {
log.error("I/O for service '" + this.getServiceName() + "' error: " + e.getMessage());
return;
}
runnable = new EsperHttpServiceNIORunnable(this.getServiceName(), this.getServiceConfig().getPort(), ioReactor, ioEventDispatch);
reactorThread = new Thread(runnable);
reactorThread.setDaemon(true);
reactorThread.start();
}
public void destroy() {
log.info("Closing service '" + this.getServiceName() + "'");
runnable.destroy();
log.info("Pausing reactor for service '" + this.getServiceName() + "' and port " + this.getServiceConfig().getPort());
try {
ioReactor.pause();
} catch (IOException e) {
log.debug("Error closing server socket: " + e.getMessage(), e);
}
log.info("Stopping reactor thread for service '" + this.getServiceName() + "'");
reactorThread.interrupt();
try {
reactorThread.join(10000);
} catch (InterruptedException e) {
log.debug("Interrupted", e);
}
}
}