Examples of backtype.storm.multilang.ShellMsg

backtype.storm.multilang.ShellMsg
ShellMsg is an object that represents the data sent to a shell component from a process that implements a multi-language protocol. It is the union of all data types that a component can send to Storm.
ShellMsgs are objects received from the ISerializer interface, after the serializer has deserialized the data from the underlying wire protocol. The ShellMsg class allows for a decoupling between the serialized representation of the data and the data itself.

        // reader
        _readerThread = new Thread(new Runnable() {
            public void run() {
                while (_running) {
                    try {
                        ShellMsg shellMsg = _process.readShellMsg();


                        String command = shellMsg.getCommand();
                        if (command == null) {
                            throw new IllegalArgumentException("Command not found in bolt message: " + shellMsg);
                        }
                        if(command.equals("ack")) {
                            handleAck(shellMsg.getId());
                        } else if (command.equals("fail")) {
                            handleFail(shellMsg.getId());
                        } else if (command.equals("error")) {
                            handleError(shellMsg.getMsg());
                        } else if (command.equals("log")) {
                            handleLog(shellMsg);
                        } else if (command.equals("emit")) {
                            handleEmit(shellMsg);
                        } else if (command.equals("metrics")) {

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    private void querySubprocess() {
        try {
            _process.writeSpoutMsg(_spoutMsg);


            while (true) {
                ShellMsg shellMsg = _process.readShellMsg();
                String command = shellMsg.getCommand();
                if (command == null) {
                    throw new IllegalArgumentException("Command not found in spout message: " + shellMsg);
                }
                if (command.equals("sync")) {
                    return;
                } else if (command.equals("log")) {
                    handleLog(shellMsg);
                } else if (command.equals("emit")) {
                    String stream = shellMsg.getStream();
                    Long task = shellMsg.getTask();
                    List<Object> tuple = shellMsg.getTuple();
                    Object messageId = shellMsg.getId();
                    if (task == 0) {
                        List<Integer> outtasks = _collector.emit(stream, tuple, messageId);
                        if (shellMsg.areTaskIdsNeeded()) {
                            _process.writeTaskIds(outtasks);
                        }
                    } else {
                        _collector.emitDirect((int) task.longValue(), stream, tuple, messageId);
                    }

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        // reader
        _readerThread = new Thread(new Runnable() {
            public void run() {
                while (_running) {
                    try {
                        ShellMsg shellMsg = _process.readShellMsg();


                        String command = shellMsg.getCommand();
                        if(command.equals("ack")) {
                            handleAck(shellMsg.getId());
                        } else if (command.equals("fail")) {
                            handleFail(shellMsg.getId());
                        } else if (command.equals("error")) {
                            handleError(shellMsg.getMsg());
                        } else if (command.equals("log")) {
                            String msg = shellMsg.getMsg();
                            LOG.info("Shell msg: " + msg);
                        } else if (command.equals("emit")) {
                            handleEmit(shellMsg);
                        }
                    } catch (InterruptedException e) {

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    private void querySubprocess() {
        try {
            _process.writeSpoutMsg(_spoutMsg);


            while (true) {
                ShellMsg shellMsg = _process.readShellMsg();
                String command = shellMsg.getCommand();
                if (command.equals("sync")) {
                    return;
                } else if (command.equals("log")) {
                    String msg = shellMsg.getMsg();
                    LOG.info("Shell msg: " + msg);
                } else if (command.equals("emit")) {
                    String stream = shellMsg.getStream();
                    Long task = shellMsg.getTask();
                    List<Object> tuple = shellMsg.getTuple();
                    Object messageId = shellMsg.getId();
                    if (task == 0) {
                        List<Integer> outtasks = _collector.emit(stream, tuple, messageId);
                        if (shellMsg.areTaskIdsNeeded()) {
                            _process.writeTaskIds(outtasks);
                        }
                    } else {
                        _collector.emitDirect((int) task.longValue(), stream, tuple, messageId);
                    }

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Related Classes of backtype.storm.multilang.ShellMsg

backtype.storm.spout.ShellSpout

backtype.storm.task.ShellBolt

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