Examples of com.cloud.exception.AgentUnavailableException

com.cloud.exception.AgentUnavailableException
command.




    private void sendToSSVM(final long dcId, final Command cmd, final Listener listener) throws AgentUnavailableException {
        List<HostVO> ssAHosts = _ssvmMgr.listUpAndConnectingSecondaryStorageVmHost(dcId);
        if (ssAHosts == null || ssAHosts.isEmpty() ) {
            throw new AgentUnavailableException("No ssvm host found", -1);
        }
        Collections.shuffle(ssAHosts);
        HostVO ssAhost = ssAHosts.get(0);
        send(ssAhost.getId(), new Commands(cmd), listener);
    }

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    @Override
    public Answer[] send(Long hostId, Commands commands, int timeout) throws AgentUnavailableException, OperationTimedoutException {
        assert hostId != null : "Who's not checking the agent id before sending?  ... (finger wagging)";
        if (hostId == null) {
            throw new AgentUnavailableException(-1);
        }


        if (timeout <= 0) {
            timeout = _wait;
        }
        assert noDbTxn() : "I know, I know.  Why are we so strict as to not allow txn across an agent call?  ...  Why are we so cruel ... Why are we such a dictator .... Too bad... Sorry...but NO AGENT COMMANDS WRAPPED WITHIN DB TRANSACTIONS!";


        Command[] cmds = commands.toCommands();


        assert cmds.length > 0 : "Ask yourself this about a hundred times.  Why am I  sending zero length commands?";


        if (cmds.length == 0) {
            commands.setAnswers(new Answer[0]);
        }


        final AgentAttache agent = getAttache(hostId);
        if (agent == null || agent.isClosed()) {
            throw new AgentUnavailableException("agent not logged into this management server", hostId);
        }


        Request req = new Request(hostId, _nodeId, cmds, commands.stopOnError(), true);
        req.setSequence(agent.getNextSequence());
        Answer[] answers = agent.send(req, timeout);

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            return null;
        }
        AgentAttache agent = findAttache(hostId);
        if (agent == null) {
            s_logger.debug("Unable to find agent for " + hostId);
            throw new AgentUnavailableException("Unable to find agent ", hostId);
        }


        return agent;
    }

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    @Override
    public long send(Long hostId, Commands commands, Listener listener) throws AgentUnavailableException {
        final AgentAttache agent = getAttache(hostId);
        if (agent.isClosed()) {
            throw new AgentUnavailableException("Agent " + agent.getId() + " is closed", agent.getId());
        }


        Command[] cmds = commands.toCommands();


        assert cmds.length > 0 : "Why are you sending zero length commands?";
        if (cmds.length == 0) {
            throw new AgentUnavailableException("Empty command set for agent " + agent.getId(), agent.getId());
        }
        Request req = new Request(hostId, _nodeId, cmds, commands.stopOnError(), true);
        req.setSequence(agent.getNextSequence());


        agent.send(req, listener);

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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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            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.getDataCenterId() 
                        + " 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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                    s_logger.debug("Unable to send the start command to host " + dest.getHost());
                    if (e.isActive()) {
                        _haMgr.scheduleStop(vm, destHostId, WorkType.CheckStop);
                    }
                    canRetry = false;
                    throw new AgentUnavailableException("Unable to start " + vm.getHostName(), destHostId, e);
                } catch (ResourceUnavailableException e) {
                    s_logger.info("Unable to contact resource.", e);
                    if (!avoids.add(e)) {
                        if (e.getScope() == Volume.class || e.getScope() == Nic.class) {
                            throw e;
                        } else {
                            s_logger.warn("unexpected ResourceUnavailableException : " + e.getScope().getName(), e);
                            throw e;
                        }
                    }
                } catch (InsufficientCapacityException e) {
                    s_logger.info("Insufficient capacity ", e);
                    if (!avoids.add(e)) {
                        if (e.getScope() == Volume.class || e.getScope() == Nic.class) {
                            throw e;
                        } else {
                            s_logger.warn("unexpected InsufficientCapacityException : " + e.getScope().getName(), e);
                        }
                    }
                } catch (Exception e) {
                    s_logger.error("Failed to start instance " + vm, e);
                    throw new AgentUnavailableException("Unable to start instance due to " + e.getMessage(), destHostId, e);
                } finally {
                    if (startedVm == null && canRetry) {
                        Step prevStep = work.getStep();
                        _workDao.updateStep(work, Step.Release);
                        // If previous step was started/ing && we got a valid answer

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    @Override
    public <T extends VMInstanceVO> boolean stop(T vm, User user, Account account) throws ResourceUnavailableException {
        try {
            return advanceStop(vm, false, user, account);
        } catch (OperationTimedoutException e) {
            throw new AgentUnavailableException("Unable to stop vm because the operation to stop timed out", vm.getHostId(), e);
        } catch (ConcurrentOperationException e) {
            throw new CloudRuntimeException("Unable to stop vm because of a concurrent operation", e);
        }
    }

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com.cloud.agent.manager.AgentManagerImpl

com.cloud.agent.manager.ClusteredAgentAttache

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com.cloud.agent.manager.ClusteredAgentManagerImpl$ClusteredAgentHandler

com.cloud.agent.manager.ConnectedAgentAttache

com.cloud.cluster.ClusterManagerImpl

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com.cloud.network.lb.ElasticLoadBalancerManagerImpl

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