Error Java Corba BAD_PARAM

Question

I am trying to establish connection to Huawei U2000 NBI corba to get alarms using the .ior file to connect. I already have the IDL files compiled to Java. Below is my main code initializing ORB

package com.be.u2k;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;

import org.omg.CORBA.ORB;

import AlarmIRPSystem.AlarmIRP;
import AlarmIRPSystem.AlarmIRPHelper;

public class Main {

    public static void main(String[] args) {

        try {
          String filename = System.getProperty ("user.home") + System.getProperty ("file.separator")+"u2k.ior";

          File f = new File(filename);

          if (!f.exists()) {
            System.out.println("File " + filename + " does not exist.");
            System.exit(-1);
          } else if (f.isDirectory()) {
            System.out.println("File " + filename + " is a directory.");
            System.exit(-1);
          }

          BufferedReader br = new BufferedReader(new FileReader(f));
          String iorContents = br.readLine();
          br.close();

          ORB orbWithIor = ORB.init(args, null);
          org.omg.CORBA.Object obj = orbWithIor.string_to_object(iorContents);

          AlarmIRP alarmIrp = AlarmIRPHelper.narrow(obj);
          System.out.println("AlarmIRPHelper.narrow success!") ;
        } catch (Exception e) {
          System.out.println("ERROR : " + e) ;
          e.printStackTrace(System.out);
        }
    }
}

Why do I keep getting BAD_PARAM error when running it with

java -jar ServerU2kAlarm.jar

admin@ip-10-44-0-10:~$ java -jar ServerU2kAlarm.jar
ERROR : org.omg.CORBA.BAD_PARAM:   vmcid: 0x0  minor code: 0  completed: No
org.omg.CORBA.BAD_PARAM:   vmcid: 0x0  minor code: 0  completed: No
    at AlarmIRPSystem.AlarmIRPHelper.narrow(AlarmIRPHelper.java:60)
    at com.be.u2k.Main.main(Main.java:36)

Did I miss anything out with my ORB object? Thanks.

Answer 1

I'm dealing with the same issue now. First you have to get EPIRP for HW U2000. Here is the example code AlarmIRP.Code not yet completed. To get to the IOR of the service to be used, the relevant irpId and irpClassName must be given in the get_IRP_reference method.

For managerIdentifier read this explanation: managerIdentifier value

Image for HW U2000 Relations between IRPs

        ***
        Properties properties = new Properties();
        properties.put("org.omg.CORBA.ORBClass", "org.jacorb.orb.ORB");
        properties.put("org.omg.CORBA.ORBSingletonClass", "org.jacorb.orb.ORBSingleton");
        properties.put("ORBInitRef.NameService", settings.getIorString());

        // Connect to name service
        ORB orb = ORB.init((String[]) null, properties);
        POA poa = POAHelper.narrow(orb.resolve_initial_references(settings.getRootPoaName()));
        poa.the_POAManager().activate();
        logger.info("ORB init success");

        org.omg.CORBA.Object obj = orb.string_to_object(settings.getIorString());

        String epirpVersion = null;
        String systemDn = null;
        String irpId = null;
        String irpClassName = null;
        EPIRP epirp = EPIRPHelper.narrow(obj);
        String[] epirpVersions = epirp.get_EP_IRP_versions();
        for (String str : epirpVersions) {
            if (null != str && !"".equals(str.trim())) {
                epirpVersion = str;
            }
        }

        SupportedIRPListTypeHolder supportedIrpList = new SupportedIRPListTypeHolder();
        if (ResultType._OK == epirp.get_IRP_outline("", supportedIrpList).value()) {
            SupportedIRPListTypeElement[] typeHolder = supportedIrpList.value;
            for (SupportedIRPListTypeElement irpListEle : typeHolder) {
                systemDn = irpListEle.systemDN;

                logger.info("dnType:    " + systemDn);
                for (IRPElement irpElement : irpListEle.irpList) {
                    irpId = irpElement.irpId;
                    logger.info("irpId: " + irpId);
                    irpClassName = irpElement.irpClassName;
                    logger.info("irpClassName: " + irpClassName);
                    logger.info("irpVersion: " + irpElement.irpVersion);
                    logger.info("irpManagementScope: ");
                    for (String s : irpElement.irpManagementScope.value()) {
                        logger.info(s);
                    }
                }
            }
        } else {
            logger.error("Failed");
        }

        StringHolder alarmIrpIOR = new StringHolder();
        epirp.get_IRP_reference(managerIdentifier, systemDn, irpId, irpClassName, alarmIrpIOR);
        logger.info("AlarmIRP:" + alarmIrpIOR.value);

        //Connect to AlarmIRP
        AlarmIRP alarmIRP = AlarmIRPHelper.narrow(orb.string_to_object(alarmIrpIOR.value));