/**
* Make the actual CORBA call.
*
* @param serverName Name of the server as known in the COS Naming Service.
* @param reload Flag indicating whether object reference should be refreshed (true) or any
* previously-cached version should be used (false).
* @param header Header message to send.
* @param message Body message to send.
* @return Response that caller should return.
* @exception Exception Thrown on any errors.
*/
private String makeClientCall(String serverName, boolean reload, String header, String message)
throws Exception {
ORB orb = null;
// If the alternate ip and port are provided
if (StringUtils.hasValue(orbAgentAddr) && StringUtils.hasValue(orbAgentPort)) {
// Key to store the orb in a static map for access the next time around
String key = orbAgentAddr + ":" + orbAgentPort;
synchronized (orbStore) {
orb = (ORB) orbStore.get(key);
if (orb == null) {
Properties props = new Properties();
props.put(ORB_AGENT_ADDR_PROP, orbAgentAddr);
props.put(ORB_AGENT_PORT_PROP, orbAgentPort);
orb = new CorbaPortabilityLayer(new String[0], props, null, serverName).getORB();
orbStore.put(key, orb);
} else {
if (Debug.isLevelEnabled(Debug.IO_STATUS))
Debug.log(
Debug.IO_STATUS,
"Using cached orb with properties "
+ "ORBagentAddr = ["
+ orbAgentAddr
+ "] ORBagentPort = ["
+ orbAgentPort
+ "]");
}
}
} else {
if (Debug.isLevelEnabled(Debug.IO_STATUS))
Debug.log(Debug.IO_STATUS, "Using the default orb ..");
orb = Supervisor.getSupervisor().getCPL().getORB();
}
ObjectLocator ob_loc = new ObjectLocator(orb);
if (reload) {
ob_loc.removeFromCache(serverName);
if (StringUtils.hasValue(orbAgentAddr) && StringUtils.hasValue(orbAgentPort))
ob_loc.removeFromCache(serverName, orbAgentAddr, orbAgentPort);
}
RequestHandler rh = null;
// The key corresponding to secondary install object references depends on host address and port
// too.
if (StringUtils.hasValue(orbAgentAddr) && StringUtils.hasValue(orbAgentPort))
rh = RequestHandlerHelper.narrow(ob_loc.find(serverName, orbAgentAddr, orbAgentPort));
else rh = RequestHandlerHelper.narrow(ob_loc.find(serverName));
if (rh == null) {
throw new Exception("Object named [" + serverName + "] is not of IDL type RequestHandler.");
}
// Make sure that the header contains any available customer context information.
header = CustomerContext.getInstance().propagate(header);
if (Debug.isLevelEnabled(Debug.IO_STATUS))
Debug.log(Debug.IO_STATUS, "Header value:\n" + header);
ThreadMonitor.ThreadInfo tmti =
ThreadMonitor.start(
"Message-processor ["
+ getName()
+ "] making CORBA client call with header:\n"
+ header);
try {
if (isAsync) {
rh.processAsync(header, message);
return (message);
} else {
org.omg.CORBA.StringHolder response = new org.omg.CORBA.StringHolder("");
rh.processSync(header, message, response);
return (response.value);
}
} finally {
ThreadMonitor.stop(tmti);
}
}
/**
* If NF_HEADER_LOCATION_PROP exists in context use as the header to forward to Gateway. If
* IS_ASYNCHRONOUS_PROP exists in context then use that value to call either processAsync or
* processSync
*
* @param input MessageObject containing the value to be processed *
* @param mpcontext The context
* @return Optional NVPair containing a Destination name and a MessageObject, or null if none.
* @exception ProcessingException Thrown if processing fails.
* @exception MessageException Thrown if bad message.
*/
public NVPair[] process(MessageProcessorContext ctx, MessageObject input)
throws MessageException, ProcessingException {
if (input == null) return null;
try {
serverName = getRequiredProperty(ctx, input, SERVER_NAME_PROP);
} catch (MessageException me) {
throw new ProcessingException(me.getMessage());
}
if (StringUtils.hasValue(headerLocation)) {
try {
header = getString(headerLocation, ctx, input);
} catch (MessageException me) {
throw new ProcessingException(me.getMessage());
}
}
if (StringUtils.hasValue(isAsyncLocation)) {
try {
isAsync = StringUtils.getBoolean(getString(isAsyncLocation, ctx, input));
} catch (FrameworkException fe) {
throw new ProcessingException(
"Value of " + IS_ASYNCHRONOUS_LOCATION_PROP + " is not TRUE/FALSE. " + fe.getMessage());
}
}
// Fetch the alternate Orb Address, if one exists at the specified context location
if (StringUtils.hasValue(orbAgentAddrLocation)) {
try {
if (exists(orbAgentAddrLocation, ctx, input, true)) {
orbAgentAddr = getString(orbAgentAddrLocation, ctx, input);
if (Debug.isLevelEnabled(Debug.MSG_STATUS))
Debug.log(
Debug.MSG_STATUS,
"RequestHandlerClient:: alternate orb exists with orb agent address ["
+ orbAgentAddr
+ "]");
}
} catch (MessageException me) {
throw new ProcessingException(me.getMessage());
}
}
// Fetch the alternate Orb Port, if one exists at the specified context location
if (StringUtils.hasValue(orbAgentPortLocation)) {
try {
if (exists(orbAgentPortLocation, ctx, input, true)) {
orbAgentPort = getString(orbAgentPortLocation, ctx, input);
if (Debug.isLevelEnabled(Debug.MSG_STATUS))
Debug.log(
Debug.MSG_STATUS,
"RequestHandlerClient:: alternate orb exists with orb agent port ["
+ orbAgentPort
+ "]");
}
} catch (MessageException me) {
throw new ProcessingException(me.getMessage());
}
}
String msg = input.getString();
try {
try {
return (formatNVPair(makeClientCall(serverName, false, header, msg)));
} catch (Exception e) {
// Any of the following exceptions indicate that the failure might be due to
// a CORBA communications issue (stale object reference) that should be retried.
if ((e instanceof org.omg.CORBA.OBJECT_NOT_EXIST)
|| (e instanceof org.omg.CORBA.TRANSIENT)
|| (e instanceof org.omg.CORBA.COMM_FAILURE)
|| (e instanceof org.omg.CORBA.INV_OBJREF)
|| (e instanceof org.omg.CORBA.UNKNOWN)) {
Debug.warning(
"Caught the following CORBA communication error, so retrying:\n"
+ e.toString()
+ "\n"
+ Debug.getStackTrace(e));
return (formatNVPair(makeClientCall(serverName, true, header, msg)));
} else {
// It's not a communication exception indicating that retry is recommended,
// so just re-throw it.
throw e;
}
}
} catch (Exception e) {
if (e instanceof InvalidDataException) {
Debug.error(e.toString() + "\n" + Debug.getStackTrace(e));
throw new MessageException(((InvalidDataException) e).errorMessage);
} else {
Debug.error(e.toString() + "\n" + Debug.getStackTrace(e));
throw new ProcessingException(e.toString());
}
}
}