Package com.cloud.exception

Examples of com.cloud.exception.AgentUnavailableException

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            try {
                _agentMgr.send(router.getHostId(), cmds);
            } catch (OperationTimedoutException e) {
                s_logger.debug("Failed to start remote access VPN: ", e);
                throw new AgentUnavailableException("Unable to send commands to virtual router ", router.getHostId(), e);
            }
            Answer answer = cmds.getAnswer("users");
            if (!answer.getResult()) {
                s_logger.error("Unable to start vpn: unable add users to vpn in zone " + router.getDataCenterIdToDeployIn()
                        + " for account " + vpn.getAccountId() + " on domR: " + router.getInstanceName()
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        Answer[] answers = null;
        try {
            answers = _agentMgr.send(router.getHostId(), cmds);
        } catch (OperationTimedoutException e) {
            s_logger.warn("Timed Out", e);
            throw new AgentUnavailableException("Unable to send commands to virtual router ", router.getHostId(), e);
        }

        if (answers == null) {
            return false;
        }
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        Command[] cmds = new Command[1];
        cmds[0] = new ChangeAgentCommand(agentId, event);

        Answer[] answers = execute(msPeer, agentId, cmds, true);
        if (answers == null) {
            throw new AgentUnavailableException(agentId);
        }

        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Result for agent change is " + answers[0].getResult());
        }
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        Command[] cmds = new Command[1];
        cmds[0] = new PropagateResourceEventCommand(agentId, event);

        Answer[] answers = execute(msPeer, agentId, cmds, true);
        if (answers == null) {
            throw new AgentUnavailableException(agentId);
        }

        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Result for agent change is " + answers[0].getResult());
        }
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        }

        if (_maintenance) {
            for (final Command cmd : cmds) {
                if (Arrays.binarySearch(s_commandsAllowedInMaintenanceMode, cmd.getClass().toString()) < 0) {
                    throw new AgentUnavailableException("Unable to send " + cmd.getClass().toString() + " because agent is in maintenance mode", _id);
                }
            }
        }

        if (_status == Status.Connecting) {
            for (final Command cmd : cmds) {
                if (Arrays.binarySearch(s_commandsNotAllowedInConnectingMode, cmd.getClass().toString()) >= 0) {
                    throw new AgentUnavailableException("Unable to send " + cmd.getClass().toString() + " because agent is in connecting mode", _id);
                }
            }
        }
    }
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        }

        synchronized(this) {
            try {
                if (isClosed()) {
                    throw new AgentUnavailableException("The link to the agent has been closed", _id);
                }

                if (req.executeInSequence() && _currentSequence != null) {
                    req.logD("Waiting for Seq " + _currentSequence + " Scheduling: ", true);
                    addRequest(req);
                    return;
                }

                // If we got to here either we're not suppose to set
                // the _currentSequence or it is null already.

                req.logD("Sending ", true);
                send(req);

                if (req.executeInSequence() && _currentSequence == null) {
                    _currentSequence = seq;
                    if (s_logger.isTraceEnabled()) {
                        s_logger.trace(log(seq, " is current sequence"));
                    }
                }
            } catch (AgentUnavailableException e) {
                s_logger.info(log(seq, "Unable to send due to " + e.getMessage()));
                cancel(seq);
                throw e;
            } catch (Exception e) {
                s_logger.warn(log(seq, "Unable to send due to "), e);
                cancel(seq);
                throw new AgentUnavailableException("Problem due to other exception " + e.getMessage(), _id);
            }
        }
    }
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    @Override
    public synchronized void send(Request req) throws AgentUnavailableException {
        try {
            _link.send(req.toBytes());
        } catch (ClosedChannelException e) {
            throw new AgentUnavailableException("Channel is closed", _id);
        }
    }
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        if (_transferMode) {
            // need to throw some other exception while agent is in rebalancing mode
            for (final Command cmd : cmds) {
                if (!cmd.allowCaching()) {
                    throw new AgentUnavailableException("Unable to send " + cmd.getClass().toString() + " because agent is in Rebalancing mode", _id);
                }
            }
        } else {
            super.checkAvailability(cmds);
        }
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        if (_link == null) {
            if (s_logger.isDebugEnabled()) {
                s_logger.debug(log(Request.getSequence(data), "Link is closed"));
            }
            throw new AgentUnavailableException("Link is closed", _id);
        }

        try {
            _link.send(data);
        } catch (ClosedChannelException e) {
            if (s_logger.isDebugEnabled()) {
                s_logger.debug(log(Request.getSequence(data), "Channel is closed"));
            }

            throw new AgentUnavailableException("Channel to agent is closed", _id);
        } catch (NullPointerException e) {
            if (s_logger.isDebugEnabled()) {
                s_logger.debug(log(Request.getSequence(data), "Link is closed"));
            }
            // Note: since this block is not in synchronized.  It is possible for _link to become null.
            throw new AgentUnavailableException("Channel to agent is null", _id);
        }
    }
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                return;
            }
        }

        if (s_clusteredAgentMgr == null) {
            throw new AgentUnavailableException("ClusteredAgentAttache not properly initialized", _id);
        }
       
        int i = 0;
        SocketChannel ch = null;
        boolean error = true;
        try {
            while (i++ < 5) {
                String peerName = s_clusteredAgentMgr.findPeer(_id);
                if (peerName == null) {
                    throw new AgentUnavailableException("Unable to find peer", _id);
                }

                ch = s_clusteredAgentMgr.connectToPeer(peerName, ch);
                if (ch == null) {
                    if (s_logger.isDebugEnabled()) {
                        s_logger.debug(log(seq, "Unable to forward " + req.toString()));
                    }
                    continue;
                }
               
                SSLEngine sslEngine = s_clusteredAgentMgr.getSSLEngine(peerName);
                if (sslEngine == null) {
                    throw new AgentUnavailableException("Unable to get SSLEngine of peer " + peerName, _id);
                }

                try {
                    if (s_logger.isDebugEnabled()) {
                        s_logger.debug(log(seq, "Forwarding " + req.toString() + " to " + peerName));
                    }
                    if (req.executeInSequence() && listener != null && listener instanceof SynchronousListener) {
                        SynchronousListener synchronous = (SynchronousListener)listener;
                        synchronous.setPeer(peerName);
                    }
                    Link.write(ch, req.toBytes(), sslEngine);
                    error = false;
                    return;
                } catch (IOException e) {
                    if (s_logger.isDebugEnabled()) {
                        s_logger.debug(log(seq, "Error on connecting to management node: " + req.toString() + " try = " + i));
                    }

                    if(s_logger.isInfoEnabled()) {
                        s_logger.info("IOException " + e.getMessage() + " when sending data to peer " + peerName + ", close peer connection and let it re-open");
                    }
                }
            }
        } finally {
            if (error) {
                unregisterListener(seq);
            }
        }
        throw new AgentUnavailableException("Unable to reach the peer that the agent is connected", _id);
    }
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Related Classes of com.cloud.exception.AgentUnavailableException

  • com.cloud.agent.manager.AgentAttache
  • com.cloud.agent.manager.AgentManagerImpl
  • com.cloud.agent.manager.ClusteredAgentAttache
  • com.cloud.agent.manager.ClusteredAgentManagerImpl
  • com.cloud.agent.manager.ClusteredAgentManagerImpl$ClusteredAgentHandler
  • com.cloud.agent.manager.ConnectedAgentAttache
  • com.cloud.cluster.ClusterManagerImpl
  • com.cloud.ha.KVMFencerTest
  • com.cloud.network.lb.ElasticLoadBalancerManagerImpl
  • com.cloud.network.router.VirtualNetworkApplianceManagerImpl
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