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package org.glassfish.enterprise.iiop.impl;
import com.sun.corba.ee.spi.folb.GroupInfoService;
import org.glassfish.api.naming.NamingClusterInfo;
import org.glassfish.api.naming.NamingObjectsProvider;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.internal.api.ORBLocator;
import org.glassfish.logging.annotation.LogMessageInfo;
import org.glassfish.logging.annotation.LoggerInfo;
import org.glassfish.logging.annotation.LogMessagesResourceBundle;
import org.jvnet.hk2.annotations.Service;
import org.glassfish.hk2.api.ServiceLocator;
import org.omg.CORBA.ORB;
import org.omg.CORBA.ORBPackage.InvalidName;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.inject.Singleton;
/**
* This class is responsible for setting up naming load-balancing including RoundRobinPolicy.
*/
@Service
@Singleton
public class NamingClusterInfoImpl implements NamingClusterInfo {
//move up to some class in top orb module
@LoggerInfo(subsystem = "orb", description = "logger for GlassFish appserver orb modules", publish = true)
public static final String ORB_LOGGER_NAME = "org.glassfish.orb";
@LogMessagesResourceBundle
public static final String ORB_LOGGER_RB = ORB_LOGGER_NAME + ".LogMessages";
public static final Logger logger = Logger.getLogger(ORB_LOGGER_NAME, ORB_LOGGER_RB);
@LogMessageInfo(message = "Exception occurred when resolving {0}",
cause = "org.omg.CORBA.ORBPackage.InvalidName when trying to resolve GroupInfoService",
action = "Check server.log for details")
public static final String FAILED_TO_RESOLVE_GROUPINFOSERVICE = "AS-ORB-00001";
@LogMessageInfo(
message = "No Endpoints selected in com.sun.appserv.iiop.endpoints property. Using {0}:{1} instead")
public static final String NO_ENDPOINT_SELECTED = "AS-ORB-00002";
private RoundRobinPolicy rrPolicy;
private GroupInfoServiceObserverImpl giso;
@Override
public void initGroupInfoService(Hashtable myEnv, String defaultHost, String defaultPort,
ORB orb, ServiceLocator services) {
// Always create one rrPolicy to be shared, if needed.
final List epList = getEndpointList(myEnv, defaultHost, defaultPort);
rrPolicy = new RoundRobinPolicy(epList);
GroupInfoService gis = null ;
try {
gis = (GroupInfoService) (orb.resolve_initial_references(ORBLocator.FOLB_CLIENT_GROUP_INFO_SERVICE));
} catch (InvalidName ex) {
logger.log(Level.SEVERE, FAILED_TO_RESOLVE_GROUPINFOSERVICE, ORBLocator.FOLB_CLIENT_GROUP_INFO_SERVICE);
logger.log(Level.SEVERE, "", ex);
}
giso = new GroupInfoServiceObserverImpl( gis, rrPolicy );
gis.addObserver(giso);
// fineLog( "getInitialContext: rrPolicy = {0}", rrPolicy );
// this should force the initialization of the resources providers
if (services !=null) {
for (ServiceHandle provider : services.getAllServiceHandles(NamingObjectsProvider.class)) {
provider.getService();
// no - op. Do nothing with the provided object
}
// for (NamingObjectsProvider provider :
// services.getAllByContract(NamingObjectsProvider.class)) {
// // no-op
// }
}
// Get the actual content, not just the configured
// endpoints.
giso.forceMembershipChange();
if(logger.isLoggable(Level.FINE))
logger.log(Level.FINE, "NamingClusterInfoImpl.initGroupInfoService RoundRobinPolicy {0}", rrPolicy);
}
@Override
public void setClusterInstanceInfo(Hashtable myEnv, String defaultHost, String defaultPort,
boolean membershipChangeForced) {
final List list = getEndpointList(myEnv, defaultHost, defaultPort) ;
rrPolicy.setClusterInstanceInfoFromString(list);
if (!membershipChangeForced) {
giso.forceMembershipChange() ;
}
}
@Override
public List getNextRotation() {
return rrPolicy.getNextRotation();
}
private List getEndpointList(Hashtable env, String defaultHost, String defaultPort) {
final List list = new ArrayList() ;
final String lbpv = getEnvSysProperty( env, LOAD_BALANCING_PROPERTY);
final List lbList = splitOnComma(lbpv) ;
if (lbList.size() > 0) {
final String first = lbList.remove( 0 ) ;
if (first.equals(IC_BASED) || first.equals(IC_BASED_WEIGHTED)) {
// XXX concurrency issue here: possible race on global
System.setProperty(LOAD_BALANCING_PROPERTY, first );
}
}
list.addAll( lbList ) ;
if (list.isEmpty()) {
final String iepv = getEnvSysProperty( env, IIOP_ENDPOINTS_PROPERTY);
final List epList = splitOnComma(iepv) ;
list.addAll( epList ) ;
}
if (list.isEmpty()) {
final String urlValue = (String)env.get(
ORBLocator.JNDI_PROVIDER_URL_PROPERTY) ;
list.addAll( rrPolicy.getEndpointForProviderURL( urlValue ) ) ;
}
if (list.isEmpty()) {
String host = getEnvSysProperty( env,
ORBLocator.OMG_ORB_INIT_HOST_PROPERTY) ;
String port = getEnvSysProperty( env,
ORBLocator.OMG_ORB_INIT_PORT_PROPERTY) ;
if (host != null && port != null) {
list.addAll(rrPolicy.getAddressPortList(host, port) ) ;
logger.log(Level.WARNING, NO_ENDPOINT_SELECTED, new Object[]{host, port});
}
}
if (list.isEmpty()) {
if (defaultHost != null && defaultPort != null) {
list.add( defaultHost + ":" + defaultPort ) ;
}
}
if (list.isEmpty()) {
throw new RuntimeException("Cannot Proceed. No Endpoints specified.");
}
return list ;
}
private List splitOnComma( String arg ) {
final List result = new ArrayList() ;
if (arg != null) {
final String[] splits = arg.split( "," ) ;
if (splits != null) {
for (String str : splits) {
result.add( str.trim() ) ;
}
}
}
return result ;
}
private String getEnvSysProperty( Hashtable env, String pname ) {
String value = (String)env.get( pname ) ;
if (value == null) {
value = System.getProperty( pname ) ;
}
return value ;
}
}