Examples of com.cloud.agent.transport.Request

com.cloud.agent.transport.Request
Request is a simple wrapper around command and answer to add sequencing, versioning, and flags. Note that the version here represents the changes in the over the wire protocol. For example, if we decide to not use Gson. It does not version the changes in the actual commands. That's expected to be done by adding new classes to the command and answer list. A request looks as follows: 1. Version - 1 byte; 2. Flags - 3 bytes; 3. Sequence - 8 bytes; 4. Length - 4 bytes; 5. ManagementServerId - 8 bytes; 6. AgentId - 8 bytes; 7. Data Package.

                    }
                }
            }


            if (s_logger.isDebugEnabled()) {
                new Request(-1l, -1l, cmds, true, false).logD("Startup request from directly connected host: ", true);
            }


            if (old) {
                StartupCommand firstCmd = cmds[0];
                host = findHostByGuid(firstCmd.getGuid());

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        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, agent.getName(), _nodeId, cmds, commands.stopOnError(), true);
        req.setSequence(agent.getNextSequence());
        Answer[] answers = agent.send(req, timeout);
        notifyAnswersToMonitors(hostId, req.getSequence(), answers);
        commands.setAnswers(answers);
        return answers;
    }

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        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, agent.getName(), _nodeId, cmds, commands.stopOnError(), true);
        req.setSequence(agent.getNextSequence());


        agent.send(req, listener);
        return req.getSequence();
    }

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            }
        }


        try {
            if (attache == null) {
                final Request readyRequest = new Request(-1, -1, ready, false);
                link.send(readyRequest.getBytes());
            } else {
                easySend(attache.getId(), ready);
            }
        } catch (Exception e) {
            s_logger.debug("Failed to send ready command:" + e.toString());

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            try {
                final Type type = task.getType();
                if (type == Task.Type.DATA) {
                    final byte[] data = task.getData();
                    try {
                        final Request event = Request.parse(data);
                        if (event instanceof Response) {
                            processResponse(task.getLink(), (Response)event);
                        } else {
                            processRequest(task.getLink(), event);
                        }

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            try {
                final Type type = task.getType();
                if (type == Task.Type.DATA) {
                    final byte[] data = task.getData();
                    try {
                        final Request event = Request.parse(data);
                        if (event instanceof Response) {
                            processResponse(task.getLink(), (Response) event);
                        } else {
                            processRequest(task.getLink(), event);
                        }

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            final Type type = task.getType();
            s_logger.info("recieved task of type "+ type.toString() +" to handle in BootStrapTakHandler");
            if (type == Task.Type.DATA)
            {
                final byte[] data = task.getData();
                final Request request = Request.parse(data);
                final Command cmd = request.getCommand();


                if (cmd instanceof StartupVMMAgentCommand) {


                    StartupVMMAgentCommand vmmCmd = (StartupVMMAgentCommand) cmd;

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        s_logger.info("Stopping the agent: Reason = " + reason + (detail != null ? ": Detail = " + detail : ""));
        if (_connection != null) {
            final ShutdownCommand cmd = new ShutdownCommand(reason, detail);
            try {
                if (_link != null) {
                    Request req = new Request((_id != null ? _id : -1), -1, cmd, false);
                    _link.send(req.toBytes());
                }
            } catch (final ClosedChannelException e) {
                s_logger.warn("Unable to send: " + cmd.toString());
            } catch (Exception e) {
                s_logger.warn("Unable to send: " + cmd.toString() + " due to exception: ", e);

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        for (int i = 0; i < startup.length; i++) {
            setupStartupCommand(startup[i]);
            commands[i] = startup[i];
        }


        final Request request = new Request(_id != null ? _id : -1, -1, commands, false, false);
        request.setSequence(getNextSequence());


        if (s_logger.isDebugEnabled()) {
            s_logger.debug("Sending Startup: " + request.toString());
        }
        synchronized (this) {
            _startup = new StartupTask(link);
            _timer.schedule(_startup, _startupWait);
        }
        try {
            link.send(request.toBytes());
        } catch (final ClosedChannelException e) {
            s_logger.warn("Unable to send reques: " + request.toString());
        }
    }

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                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 {

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Related Classes of com.cloud.agent.transport.Request

com.cloud.agent.Agent

com.cloud.agent.Agent$AgentRequestHandler

com.cloud.agent.Agent$ServerHandler

com.cloud.agent.manager.AgentAttache

com.cloud.agent.manager.AgentManagerImpl

com.cloud.agent.manager.AgentManagerImpl$AgentHandler

com.cloud.agent.manager.ClusteredAgentManagerImpl

com.cloud.agent.manager.ClusteredAgentManagerImpl$ClusteredAgentHandler

com.cloud.agent.manager.ClusteredDirectAgentAttache

com.cloud.agent.manager.DirectAgentAttache$PingTask

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