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

Example 1 with Response

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

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 (s_logger.isDebugEnabled()) {
                    // this is a hack to make sure we do NOT log the ssh keys
                    if ((cmd instanceof ModifySshKeysCommand)) {
                        s_logger.debug("Received the request for command: ModifySshKeysCommand");
                    } else {
                        if (// ensures request is logged only once per method call
                        !requestLogged) {
                            s_logger.debug("Request:" + request.toString());
                            requestLogged = true;
                        }
                    }
                    s_logger.debug("Processing command: " + cmd.toString());
                }
                if (cmd instanceof CronCommand) {
                    final CronCommand watch = (CronCommand) cmd;
                    scheduleWatch(link, request, watch.getInterval() * 1000, watch.getInterval() * 1000);
                    answer = new Answer(cmd, true, null);
                } else if (cmd instanceof UpgradeCommand) {
                    final UpgradeCommand upgrade = (UpgradeCommand) cmd;
                    answer = upgradeAgent(upgrade.getUpgradeUrl(), upgrade);
                } else if (cmd instanceof ShutdownCommand) {
                    ShutdownCommand shutdown = (ShutdownCommand) cmd;
                    s_logger.debug("Received shutdownCommand, due to: " + shutdown.getReason());
                    cancelTasks();
                    _reconnectAllowed = false;
                    answer = new Answer(cmd, true, null);
                } else if (cmd instanceof MaintainCommand) {
                    s_logger.debug("Received maintainCommand");
                    cancelTasks();
                    _reconnectAllowed = false;
                    answer = new MaintainAnswer((MaintainCommand) cmd);
                } else if (cmd instanceof AgentControlCommand) {
                    answer = null;
                    synchronized (_controlListeners) {
                        for (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 {
                    _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()) {
            s_logger.debug(response != null ? response.toString() : "response is null");
        }
        if (response != null) {
            try {
                link.send(response.toBytes());
            } catch (final ClosedChannelException e) {
                s_logger.warn("Unable to send response: " + response.toString());
            }
        }
    }
}

Example 2 with Response

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

the class AgentAttache method send.

public Answer[] send(final Request req, final int wait) throws AgentUnavailableException, OperationTimedoutException {
    SynchronousListener sl = new SynchronousListener(null);
    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 (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 (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 3 with Response

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

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, mgmtServiceConf.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 4 with Response

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

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;
            if (cmd.getContextParam("logid") != null) {
                MDC.put("logcontextid", cmd.getContextParam("logid"));
            }
            if (// ensures request is logged only once per method call
            !requestLogged) {
                final String requestMsg = request.toString();
                if (requestMsg != null) {
                    logger.debug("Request:" + requestMsg);
                }
                requestLogged = true;
            }
            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;
                logger.debug("Received shutdownCommand, due to: " + shutdown.getReason());
                cancelTasks();
                _reconnectAllowed = false;
                answer = new Answer(cmd, true, null);
            } else if (cmd instanceof ReadyCommand && ((ReadyCommand) cmd).getDetails() != null) {
                logger.debug("Not ready to connect to mgt server: " + ((ReadyCommand) cmd).getDetails());
                System.exit(1);
                return;
            } else if (cmd instanceof MaintainCommand) {
                logger.debug("Received maintainCommand");
                cancelTasks();
                _reconnectAllowed = false;
                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) {
                    logger.warn("No handler found to process cmd: " + cmd.toString());
                    answer = new AgentControlAnswer(cmd);
                }
            } else {
                if (cmd instanceof ReadyCommand) {
                    processReadyCommand(cmd);
                }
                _inProgress.incrementAndGet();
                try {
                    answer = resource.executeRequest(cmd);
                } finally {
                    _inProgress.decrementAndGet();
                }
                if (answer == null) {
                    logger.debug("Response: unsupported command" + cmd.toString());
                    answer = Answer.createUnsupportedCommandAnswer(cmd);
                }
            }
            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 (logger.isDebugEnabled()) {
            final String responseMsg = response.toString();
            if (responseMsg != null) {
                logger.debug(response.toString());
            }
        }
        if (response != null) {
            try {
                link.send(response.toBytes());
            } catch (final ClosedChannelException e) {
                logger.warn("Unable to send response: " + response.toString());
            }
        }
    }
}

Example 5 with Response

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

the class DirectAgentAttache method send.

@Override
public void send(final Request req) throws AgentUnavailableException {
    req.logD("Executing: ", true);
    if (req instanceof Response) {
        final Response resp = (Response) req;
        final Answer[] answers = resp.getAnswers();
        if (answers != null && answers[0] instanceof StartupAnswer) {
            final StartupAnswer startup = (StartupAnswer) answers[0];
            final int interval = startup.getPingInterval();
            _futures.add(_agentMgr.getCronJobPool().scheduleAtFixedRate(new PingTask(), interval, interval, TimeUnit.SECONDS));
        }
    } else {
        final Command[] cmds = req.getCommands();
        if (cmds.length > 0 && !(cmds[0] instanceof CronCommand)) {
            queueTask(new Task(req));
            scheduleFromQueue();
        } else {
            final CronCommand cmd = (CronCommand) cmds[0];
            _futures.add(_agentMgr.getCronJobPool().scheduleAtFixedRate(new CronTask(req), cmd.getInterval(), cmd.getInterval(), TimeUnit.SECONDS));
        }
    }
}