{{CTRL_DATA}} variable

By using the {{CTRL_DATA}} you can grab the result output of your initial request method, and then use it as input in your reply method.

NB: The echo command in the example below will remove new lines from the data. To also keep any new lines we need to put escaped quotes around the template variable. Like this:

• \"{{CTRL_DATA}}\"

Example of usage:

[
    {
        "directory":"cli_command_test",
        "fileName":"cli_command.result",
        "toNode": "node2",
        "method":"cliCommand",
        "methodArgs": ["bash","-c","tree"],
        "replyMethod":"cliCommand",
        "replyMethodArgs": ["bash", "-c","echo \"{{CTRL_DATA}}\" > apekatt.txt"],
        "replyMethodTimeOut": 10,
        "ACKTimeout":3,
        "retries":3,
        "methodTimeout": 10
    }
]

The above example, with steps explained:

• Send a message from node1 to node2 with a Request Method of type cliCommand.
• When received at node2 we execute the Reqest Method with the arguments specified in the methodArgs.
• When the method on node2 is done the result data of the method run will be stored in the variable {{CTRL_DATA}}. We can then use this variable when we craft the reply message method by embedding it into a new bash command.
• The reply message is then sent back to node1, the method will be executed, and all newlines in the result data will be removed, and all the data with the new lines removed will be stored in a file called apekatt.txt

The same using bash's herestring:

[
    {
        "directory":"cli_command_test",
        "fileName":"cli_command.result",
        "toNode": "ship2",
        "method":"cliCommand",
        "methodArgs": ["bash","-c","tree"],
        "replyMethod":"cliCommand",
        "replyMethodArgs": ["bash", "-c","cat <<< {{CTRL_DATA}} > hest.txt"],
        "replyMethodTimeOut": 10,
        "ACKTimeout":3,
        "retries":3,
        "methodTimeout": 10
    }
]