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package org.jvnet.glassfish.comms.clb.core.sip;
import com.ericsson.ssa.container.NetworkManager;
import com.ericsson.ssa.sip.Layer;
import com.ericsson.ssa.sip.LayerHelper;
import com.ericsson.ssa.sip.OutboundInterface;
import com.ericsson.ssa.sip.SipServletMessageImpl;
import com.ericsson.ssa.sip.SipServletRequestImpl;
import com.ericsson.ssa.sip.SipServletResponseImpl;
import com.ericsson.ssa.sip.dns.SipTransports;
import com.ericsson.ssa.sip.dns.TargetTuple;
import com.sun.grizzly.tcp.Response;
import org.jvnet.glassfish.comms.clb.core.CLBRuntimeException;
import org.jvnet.glassfish.comms.clb.core.ConsistentHashRequest;
import org.jvnet.glassfish.comms.clb.core.Controller;
import org.jvnet.glassfish.comms.clb.core.RequestGroup;
import org.jvnet.glassfish.comms.clb.core.Router;
import org.jvnet.glassfish.comms.clb.core.RouterFactory;
import org.jvnet.glassfish.comms.clb.core.ServerCluster;
import org.jvnet.glassfish.comms.clb.core.util.LoadbalancerUtil;
import org.jvnet.glassfish.comms.clb.proxy.http.util.HttpRequest;
import org.jvnet.glassfish.comms.util.LogUtil;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
import org.jvnet.glassfish.comms.clb.core.monitor.CLBMonitoringManager;
/**
* This is the request group implementation for SIP.
*/
public class SipRequestGroup implements RequestGroup {
private static Logger logger = LogUtil.CLB_LOGGER.getLogger();
private static final CLBMonitoringManager clbMonitoringManager =
CLBMonitoringManager.getInstance();
private SipLoadBalancerIncomingHandler sipLoadBalancer;
private List<ServerCluster> clusters = new ArrayList<ServerCluster>();
private Router stickyRouter;
private Controller controller;
/**
* Create the request group.
*/
public SipRequestGroup(Controller controller) {
this.controller = controller;
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#addCluster(org.jvnet.glassfish.comms.clb.core.ServerCluster)
*/
public void addCluster(ServerCluster cluster) {
clusters.add(cluster);
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#deleteCluster(org.jvnet.glassfish.comms.clb.core.ServerCluster)
*/
public void deleteCluster(ServerCluster cluster) {
clusters.remove(cluster);
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#handleIncomingRequest(com.ericsson.ssa.sip.SipServletRequestImpl)
*/
public boolean handleIncomingRequest(SipServletRequestImpl request)
throws SipRoutingException {
Connection connection;
controller.incrementRequestCount();
try {
ConsistentHashRequest chr = new ConsistentHashRequest(request, null);
connection = sipLoadBalancer.handleIncomingRequest(chr, stickyRouter);
if (connection != null) {
// Alter connection and dispatch
LayerHelper.resetDispatcher(request, NetworkManager.getInstance());
TargetTuple targetTuple = new TargetTuple(connection.getTransport(),
connection.getRemoteEndpoint().getHostName(),
connection.getRemoteEndpoint().getPort());
if(connection.getOutgoingEndpoint() != null){
targetTuple.setCLBEndpoint(true);
targetTuple.setBindIp(connection.getOutgoingEndpoint().getHostName());
targetTuple.setBindPort(connection.getOutgoingEndpoint().getPort());
}
request.setResolvedRemote(targetTuple);
//Proxy request to set remote end-point
return false;
} else {
//Continue on this server
return true;
}
} finally {
controller.decrementRequestCount();
}
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#handleIncomingResponse(com.ericsson.ssa.sip.SipServletResponseImpl)
*/
public boolean handleIncomingResponse(SipServletResponseImpl response)
throws SipRoutingException {
Connection connection;
controller.incrementRequestCount();
try {
connection = sipLoadBalancer.handleIncomingResponse(response);
if (connection != null) {
// Alter connection and dispatch
LayerHelper.resetDispatcher(response, NetworkManager.getInstance());
TargetTuple targetTuple = new TargetTuple(connection.getTransport(), //its already resolved, dont resolve
connection.getRemoteEndpoint().getHostName(),
connection.getRemoteEndpoint().getPort());
if(connection.getOutgoingEndpoint() != null){
targetTuple.setCLBEndpoint(true);
targetTuple.setBindIp(connection.getOutgoingEndpoint().
getHostName());
targetTuple.setBindPort(connection.getOutgoingEndpoint().
getPort());
}
if (connection.getLocalEndpoint() == null) {
if (connection.getTransport() == SipTransports.UDP_PROT) {
// The Via has already been resolved and there is no point to retry
// sending to that address fails, since it is UDP.
response.setRetryPolicy(SipServletMessageImpl.RetryPolicy.DONT_RETRY);
} else {
response.setRetryPolicy(SipServletMessageImpl.RetryPolicy.RETRY); //dont resolve again if failure
}
} else {
targetTuple.setCLBEndpoint(true);
targetTuple.setBindIp(connection.getLocalEndpoint().getHostName());
response.setRetryPolicy(SipServletMessageImpl.RetryPolicy.RESOLVE_AND_RETRY);
}
response.setResolvedRemote(targetTuple);
//Proxy response to set remote end-point
return false;
} else {
// Continue on this server
return true;
}
} finally {
controller.decrementRequestCount();
}
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#initializeRouter(java.lang.String)
*/
public void initializeRouter(String lbpolicy, String dcrFileName)
throws CLBRuntimeException {
setupServerSelector();
if(controller.getLocalInstance() != null)
sipLoadBalancer = new SipLoadBalancerIncomingHandler(controller);
else
sipLoadBalancer = new SipLoadBalancerIncomingHandler(controller, LoadbalancerUtil.getLocalSocket(
SipTransports.TCP_PROT));
}
private void setupServerSelector() throws CLBRuntimeException {
stickyRouter = RouterFactory.createRouter(RouterFactory.LBPolicy_STICKY_CONSISTENT_HASH,
clusters, false);
stickyRouter.setController(controller);
stickyRouter.initialize();
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#reinitializeRouter()
*/
public void reinitializeRouter() throws CLBRuntimeException {
setupServerSelector();
}
public void processDCRFileUpdateEvent() throws CLBRuntimeException {
setupServerSelector();
}
/**
* @see org.jvnet.glassfish.comms.clb.core.RequestGroup#serviceRequest(org.jvnet.glassfish.comms.clb.core.Request,
* org.jvnet.glassfish.comms.clb.core.Response)
*/
public void serviceRequest(HttpRequest req, Response res) {
throw new UnsupportedOperationException("Not relevant for SIP");
}
public void cleanup() {
stickyRouter.cleanup();
stickyRouter = null;
clusters = null;
controller = null;
sipLoadBalancer = null;
}
}