Examples with Response com.cloud.agent.transport.Response used on opensource projects

Example 6 with Response

use of com.cloud.agent.transport.Response in project cosmic by MissionCriticalCloud.

the class AgentManagerImpl method connectAgent.

protected void connectAgent(final Link link, final Command[] cmds, final Request request) {
    // send startupanswer to agent in the very beginning, so agent can move on without waiting for the answer for an undetermined time, if we put this logic into another
    // thread pool.
    final StartupAnswer[] answers = new StartupAnswer[cmds.length];
    Command cmd;
    for (int i = 0; i < cmds.length; i++) {
        cmd = cmds[i];
        if (cmd instanceof StartupRoutingCommand || cmd instanceof StartupProxyCommand || cmd instanceof StartupSecondaryStorageCommand || cmd instanceof StartupStorageCommand) {
            answers[i] = new StartupAnswer((StartupCommand) cmds[i], 0, getPingInterval());
            break;
        }
    }
    Response response = null;
    response = new Response(request, answers[0], _nodeId, -1);
    try {
        link.send(response.toBytes());
    } catch (final ClosedChannelException e) {
        s_logger.debug("Failed to send startupanswer: " + e.toString());
    }
    _connectExecutor.execute(new HandleAgentConnectTask(link, cmds, request));
}

Example 7 with Response

use of com.cloud.agent.transport.Response in project CloudStack-archive by CloudStack-extras.

the class Agent method processOtherTask.

public void processOtherTask(Task task) {
    final Object obj = task.get();
    if (obj instanceof Response) {
        if ((System.currentTimeMillis() - _lastPingResponseTime) > _pingInterval * _shell.getPingRetries()) {
            s_logger.error("Ping Interval has gone past " + _pingInterval * _shell.getPingRetries() + ".  Attempting to reconnect.");
            final Link link = task.getLink();
            reconnect(link);
            return;
        }
        final PingCommand ping = _resource.getCurrentStatus(getId());
        final Request request = new Request(_id, -1, ping, false);
        request.setSequence(getNextSequence());
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Sending ping: " + request.toString());
        }
        try {
            task.getLink().send(request.toBytes());
            //if i can send pingcommand out, means the link is ok
            setLastPingResponseTime();
        } catch (final ClosedChannelException e) {
            s_logger.warn("Unable to send request: " + request.toString());
        }
    } else if (obj instanceof Request) {
        final Request req = (Request) obj;
        final Command command = req.getCommand();
        Answer answer = null;
        _inProgress.incrementAndGet();
        try {
            answer = _resource.executeRequest(command);
        } finally {
            _inProgress.decrementAndGet();
        }
        if (answer != null) {
            final Response response = new Response(req, answer);
            if (s_logger.isDebugEnabled()) {
                s_logger.debug("Watch Sent: " + response.toString());
            }
            try {
                task.getLink().send(response.toBytes());
            } catch (final ClosedChannelException e) {
                s_logger.warn("Unable to send response: " + response.toString());
            }
        }
    } else {
        s_logger.warn("Ignoring an unknown task");
    }
}

Example 8 with Response

use of com.cloud.agent.transport.Response in project cosmic by MissionCriticalCloud.

the class AgentAttache method send.

public Answer[] send(final Request req, final int wait) throws AgentUnavailableException, OperationTimedoutException {
    final SynchronousListener sl = new SynchronousListener(null);
    final long seq = req.getSequence();
    send(req, sl);
    try {
        for (int i = 0; i < 2; i++) {
            Answer[] answers = null;
            try {
                answers = sl.waitFor(wait);
            } catch (final InterruptedException e) {
                s_logger.debug(log(seq, "Interrupted"));
            }
            if (answers != null) {
                if (s_logger.isDebugEnabled()) {
                    new Response(req, answers).logD("Received: ", false);
                }
                return answers;
            }
            // Try it again.
            answers = sl.getAnswers();
            if (answers != null) {
                if (s_logger.isDebugEnabled()) {
                    new Response(req, answers).logD("Received after timeout: ", true);
                }
                _agentMgr.notifyAnswersToMonitors(_id, seq, answers);
                return answers;
            }
            final Long current = _currentSequence;
            if (current != null && seq != current) {
                if (s_logger.isDebugEnabled()) {
                    s_logger.debug(log(seq, "Waited too long."));
                }
                throw new OperationTimedoutException(req.getCommands(), _id, seq, wait, false);
            }
            if (s_logger.isDebugEnabled()) {
                s_logger.debug(log(seq, "Waiting some more time because this is the current command"));
            }
        }
        throw new OperationTimedoutException(req.getCommands(), _id, seq, wait * 2, true);
    } catch (final OperationTimedoutException e) {
        s_logger.warn(log(seq, "Timed out on " + req.toString()));
        cancel(seq);
        final Long current = _currentSequence;
        if (req.executeInSequence() && (current != null && current == seq)) {
            sendNext(seq);
        }
        throw e;
    } catch (final Exception e) {
        s_logger.warn(log(seq, "Exception while waiting for answer"), e);
        cancel(seq);
        final Long current = _currentSequence;
        if (req.executeInSequence() && (current != null && current == seq)) {
            sendNext(seq);
        }
        throw new OperationTimedoutException(req.getCommands(), _id, seq, wait, false);
    } finally {
        unregisterListener(seq);
    }
}

Example 9 with Response

use of com.cloud.agent.transport.Response in project cloudstack by apache.

the class Agent method processOtherTask.

public void processOtherTask(final Task task) {
    final Object obj = task.get();
    if (obj instanceof Response) {
        if (System.currentTimeMillis() - _lastPingResponseTime > _pingInterval * _shell.getPingRetries()) {
            s_logger.error("Ping Interval has gone past " + _pingInterval * _shell.getPingRetries() + ". Won't reconnect to mgt server, as connection is still alive");
            return;
        }
        final PingCommand ping = _resource.getCurrentStatus(getId());
        final Request request = new Request(_id, -1, ping, false);
        request.setSequence(getNextSequence());
        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Sending ping: " + request.toString());
        }
        try {
            task.getLink().send(request.toBytes());
            // if i can send pingcommand out, means the link is ok
            setLastPingResponseTime();
        } catch (final ClosedChannelException e) {
            s_logger.warn("Unable to send request: " + request.toString());
        }
    } else if (obj instanceof Request) {
        final Request req = (Request) obj;
        final Command command = req.getCommand();
        if (command.getContextParam("logid") != null) {
            MDC.put("logcontextid", command.getContextParam("logid"));
        }
        Answer answer = null;
        _inProgress.incrementAndGet();
        try {
            answer = _resource.executeRequest(command);
        } finally {
            _inProgress.decrementAndGet();
        }
        if (answer != null) {
            final Response response = new Response(req, answer);
            if (s_logger.isDebugEnabled()) {
                s_logger.debug("Watch Sent: " + response.toString());
            }
            try {
                task.getLink().send(response.toBytes());
            } catch (final ClosedChannelException e) {
                s_logger.warn("Unable to send response: " + response.toString());
            }
        }
    } else {
        s_logger.warn("Ignoring an unknown task");
    }
}

Example 10 with Response

use of com.cloud.agent.transport.Response in project cloudstack by apache.

the class Agent method processRequest.

protected void processRequest(final Request request, final Link link) {
    boolean requestLogged = false;
    Response response = null;
    try {
        final Command[] cmds = request.getCommands();
        final Answer[] answers = new Answer[cmds.length];
        for (int i = 0; i < cmds.length; i++) {
            final Command cmd = cmds[i];
            Answer answer;
            try {
                if (cmd.getContextParam("logid") != null) {
                    MDC.put("logcontextid", cmd.getContextParam("logid"));
                }
                if (s_logger.isDebugEnabled()) {
                    if (// ensures request is logged only once per method call
                    !requestLogged) {
                        final String requestMsg = request.toString();
                        if (requestMsg != null) {
                            s_logger.debug("Request:" + requestMsg);
                        }
                        requestLogged = true;
                    }
                    s_logger.debug("Processing command: " + cmd.toString());
                }
                if (cmd instanceof CronCommand) {
                    final CronCommand watch = (CronCommand) cmd;
                    scheduleWatch(link, request, (long) watch.getInterval() * 1000, watch.getInterval() * 1000);
                    answer = new Answer(cmd, true, null);
                } else if (cmd instanceof ShutdownCommand) {
                    final ShutdownCommand shutdown = (ShutdownCommand) cmd;
                    s_logger.debug("Received shutdownCommand, due to: " + shutdown.getReason());
                    cancelTasks();
                    if (shutdown.isRemoveHost()) {
                        cleanupAgentZoneProperties();
                    }
                    _reconnectAllowed = false;
                    answer = new Answer(cmd, true, null);
                } else if (cmd instanceof ReadyCommand && ((ReadyCommand) cmd).getDetails() != null) {
                    s_logger.debug("Not ready to connect to mgt server: " + ((ReadyCommand) cmd).getDetails());
                    System.exit(1);
                    return;
                } else if (cmd instanceof MaintainCommand) {
                    s_logger.debug("Received maintainCommand, do not cancel current tasks");
                    answer = new MaintainAnswer((MaintainCommand) cmd);
                } else if (cmd instanceof AgentControlCommand) {
                    answer = null;
                    synchronized (_controlListeners) {
                        for (final IAgentControlListener listener : _controlListeners) {
                            answer = listener.processControlRequest(request, (AgentControlCommand) cmd);
                            if (answer != null) {
                                break;
                            }
                        }
                    }
                    if (answer == null) {
                        s_logger.warn("No handler found to process cmd: " + cmd.toString());
                        answer = new AgentControlAnswer(cmd);
                    }
                } else if (cmd instanceof SetupKeyStoreCommand && ((SetupKeyStoreCommand) cmd).isHandleByAgent()) {
                    answer = setupAgentKeystore((SetupKeyStoreCommand) cmd);
                } else if (cmd instanceof SetupCertificateCommand && ((SetupCertificateCommand) cmd).isHandleByAgent()) {
                    answer = setupAgentCertificate((SetupCertificateCommand) cmd);
                    if (Host.Type.Routing.equals(_resource.getType())) {
                        scheduleServicesRestartTask();
                    }
                } else if (cmd instanceof SetupMSListCommand) {
                    answer = setupManagementServerList((SetupMSListCommand) cmd);
                } else {
                    if (cmd instanceof ReadyCommand) {
                        processReadyCommand(cmd);
                    }
                    _inProgress.incrementAndGet();
                    try {
                        answer = _resource.executeRequest(cmd);
                    } finally {
                        _inProgress.decrementAndGet();
                    }
                    if (answer == null) {
                        s_logger.debug("Response: unsupported command" + cmd.toString());
                        answer = Answer.createUnsupportedCommandAnswer(cmd);
                    }
                }
            } catch (final Throwable th) {
                s_logger.warn("Caught: ", th);
                final StringWriter writer = new StringWriter();
                th.printStackTrace(new PrintWriter(writer));
                answer = new Answer(cmd, false, writer.toString());
            }
            answers[i] = answer;
            if (!answer.getResult() && request.stopOnError()) {
                for (i++; i < cmds.length; i++) {
                    answers[i] = new Answer(cmds[i], false, "Stopped by previous failure");
                }
                break;
            }
        }
        response = new Response(request, answers);
    } finally {
        if (s_logger.isDebugEnabled()) {
            final String responseMsg = response.toString();
            if (responseMsg != null) {
                s_logger.debug(response.toString());
            }
        }
        if (response != null) {
            try {
                link.send(response.toBytes());
            } catch (final ClosedChannelException e) {
                s_logger.warn("Unable to send response: " + response.toString());
            }
        }
    }
}