INNER CODE UNIT · Python

launch

WMAL/kodachios · Kodachi-OS-10-stable/open/dock/lib/kodachi_direct.py:852

def launch(key, parameters=None, stdin_values=None, survival_seconds=0.75,
           contract=None):
    """Launch exactly one direct binding and prove it survives the handoff."""
    direct = contract or registry()
    allow_handoff = direct.launch_allows_handoff(key)
    bindings = direct.bindings(key)
    if len(bindings) != 1:
        raise DirectContractError("launch operations must have exactly one direct binding")
    binding = bindings[0]
    argv = direct.argv_for(binding, parameters)
    if stdin_values not in (None, b"", ""):
        raise DirectContractError("launch operations cannot own confidential stdin")
    input_text = _stdin_for(binding, None)
    try:
        proc = subprocess.Popen(
            argv,
            stdin=subprocess.PIPE if input_text is not None else subprocess.DEVNULL,
            stdout=subprocess.DEVNULL,

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