Examples of org.jgroups.ChannelException

org.jgroups.ChannelException
This class represents the super class for all exception types thrown by JGroups.

                    log.trace("Could not read " + name + " from the CLASSPATH, will try to read it from file");
                stream=new FileInputStream(name);
            }
        }
        catch(Exception x) {
            throw new ChannelException(name + " not found. Please make sure it is on the classpath", x);
        }
        return parse(stream);
    }

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     *
     * @param cause the exceptional configuration condition to be used as the
     *              created <code>ChannelException</code>'s cause.
     */
    static ChannelException createChannelConfigurationException(Throwable cause) {
        return new ChannelException("unable to load the protocol stack", cause);
    }

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                    m=new Integer(mapping[i].getMagicNumber());
                    try {
                        Class clazz=mapping[i].getClassForMap();
                        objStreamClass=ObjectStreamClass.lookup(clazz);
                        if(objStreamClass == null)
                            throw new ChannelException("ObjectStreamClass for " + clazz + " not found");
                        if(magicMap.containsKey(m)) {
                            throw new ChannelException("magic key " + m + " (" + clazz.getName() + ')' +
                                                       " is already in map; please make sure that " +
                                                       "all magic keys are unique");
                        }
                        else {
                            magicMap.put(m, clazz);
                            classMap.put(clazz, m);


                            streamMapId.put(m, objStreamClass);
                            streamMapClass.put(objStreamClass, m);
                        }
                    }
                    catch(ClassNotFoundException cnf) {
                        throw new ChannelException("failed loading class", cnf);
                    }
                }
                if(log.isDebugEnabled()) log.debug("mapping is:\n" + printMagicMap());
            }
        }
        catch(ChannelException ex) {
            throw ex;
        }
        catch(Throwable x) {
            // if(log.isErrorEnabled()) log.error("failed reading the magic number mapping file, reason: " + Util.print(x));
            throw new ChannelException("failed reading the magic number mapping file", x);
        }
    }

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        if (!response.wasReceived()) {


            if (log.isDebugEnabled())
                log.debug("Response from node " + response.getSender() + " was not received.");


            throw new ChannelException("Node " + response.getSender() + " failed to respond.");
        }


        if (response.wasSuspected()) {


            if (log.isDebugEnabled())
                log.debug("Node " + response.getSender() + " was suspected.");


            return PROCESS_SKIP;
        }


        Object object = response.getValue();


        // we received exception/error, something went wrong
        // on one of the nodes... and we do not handle such faults
        if (object instanceof Throwable) {
            throw new ChannelException("Node " + response.getSender() + " is faulty.");
        }


        if (object == null) {
            return PROCESS_SKIP;
        }


        // it is always interesting to know the class that caused failure...
        if (!(object instanceof VoteResult)) {
            String faultClass = object.getClass().getName();


            // ...but we do not handle byzantine faults
            throw new ChannelException("Node " + response.getSender() + " generated fault (class " + faultClass + ')');
        }


        // what if we received the response from faulty node?
        if (object instanceof FailureVoteResult) {

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                    log.trace("Could not read " + mMagicNumberFile + " as Resource from the CLASSPATH, will try to read it from file.");
                stream=new FileInputStream(mMagicNumberFile);
            }
        }
        catch(Exception x) {
            throw new ChannelException(mMagicNumberFile + " not found. Please make sure it is on the classpath.", x);
        }
        return parse(stream);
    }

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                for(int i=0; i < mapping.length; i++) {
                    m=new Short(mapping[i].getMagicNumber());
                    try {
                        Class clazz=mapping[i].getClassForMap();
                        if(magicMap.containsKey(m)) {
                            throw new ChannelException("magic key " + m + " (" + clazz.getName() + ')' +
                                                       " is already in map; please make sure that " +
                                                       "all magic keys are unique");
                        }
                        else {
                            magicMap.put(m, clazz);
                            classMap.put(clazz, m);
                        }
                    }
                    catch(ClassNotFoundException cnf) {
                        throw new ChannelException("failed loading class", cnf);
                    }
                }
            }
        }
        catch(ChannelException ex) {
            throw ex;
        }
        catch(Throwable x) {
            throw new ChannelException("failed reading the magic number mapping file", x);
        }
    }

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     *
     * @param cause the exceptional configuration condition to be used as the
     *              created <code>ChannelException</code>'s cause.
     */
    static ChannelException createChannelConfigurationException(Throwable cause) {
        return new ChannelException("unable to load the protocol stack", cause);
    }

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        if (!response.wasReceived()) {


            if (log.isDebugEnabled())
                log.debug("Response from node " + response.getSender() + " was not received.");


            throw new ChannelException("Node " + response.getSender() + " failed to respond.");
        }


        if (response.wasSuspected()) {


            if (log.isDebugEnabled())
                log.debug("Node " + response.getSender() + " was suspected.");


            return PROCESS_SKIP;
        }


        Object object = response.getValue();


        // we received exception/error, something went wrong
        // on one of the nodes... and we do not handle such faults
        if (object instanceof Throwable) {
            throw new ChannelException("Node " + response.getSender() + " is faulty.");
        }


        if (object == null) {
            return PROCESS_SKIP;
        }


        // it is always interesting to know the class that caused failure...
        if (!(object instanceof VoteResult)) {
            String faultClass = object.getClass().getName();


            // ...but we do not handle byzantine faults
            throw new ChannelException("Node " + response.getSender() + " generated fault (class " + faultClass + ')');
        }


        // what if we received the response from faulty node?
        if (object instanceof FailureVoteResult) {

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    * Always throws <code>ChannelException</code>; this method is not supported.
    */   
   @Override
   public Channel createChannel() throws ChannelException
   {
      throw new ChannelException("No-arg createChannel() is not supported");
   }

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         ProtocolStackConfigurator c = ConfiguratorFactory.getStackConfigurator(properties);
         config = c;
      }
      catch (Exception x)
      {
         throw new ChannelException("unable to load protocol stack", x);
      }


      JChannel channel = initializeChannel(config, null, false);


      try
      {
         registerChannel(channel, null, null, ProtocolStackUtil.getProtocolData(config));
      }
      catch (ChannelException ce)
      {
         throw ce;
      }
      catch (Exception e)
      {
         throw new ChannelException("unable to register channel", e);
      }


      return channel;
   }

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Related Classes of org.jgroups.ChannelException

org.jboss.ha.core.channelfactory.JChannelFactory

org.jboss.ha.framework.server.JChannelFactory

org.jgroups.blocks.DistributedLockManager

org.jgroups.conf.ClassConfigurator

org.jgroups.conf.ConfiguratorFactory

org.jgroups.conf.MagicNumberReader

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