Treatment spawnOnce

process/exec::spawnOnce

Parameters

↳ var command: Command (process/command::Command)
↳ var environment: Option<Environment> = _ (process/environment::Environment)

Inputs

⇥ executor: Block<Executor> (process/exec::Executor)
⇥ launch: Block<void>
⇥ stdin: Stream<byte>

Outputs

↦ completed: Block<void>
↦ error: Block<string>
↦ exit: Block<Option<i32>>
↦ failed: Block<void>
↦ finished: Block<void>
↦ started: Block<void>
↦ stderr: Stream<byte>
↦ stdout: Stream<byte>

Spawn a single command on an executor with stdio streams, triggered by a launch signal.

Like execOnce but also connects stdin, stdout, and stderr streams to the process. command is spawned with the optional environment on the provided executor when launch fires. started is emitted when the process begins. completed is emitted on success with exit holding the return code; failed and error are emitted if the executor cannot spawn the command. finished is always emitted at the end.