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Pipelines & Events

Pipeline Events (##>)

#087 0:15 Part of the Rysh video series

Lines starting with double-hash-greater-than bypass the shell and fly straight to NATS.

Pipeline Events (##>) — 0:15 walkthrough

What you'll see

  1. Launch rysh and split a worker pane with Ctrl+P n.
  2. In the worker's rysh mode, run ##pane listen orchestrator to forward the source pane's shared output.
  3. Tab to the orchestrator pane and double-Escape into rysh mode.
  4. Emit ##>event:print:Build started at 10:30 AM -- it bypasses the PTY and publishes to the pane's NATS output topic.
  5. Emit ##>event:print:Compiling module auth; the payload reaches listeners without an alias prefix.

Commands shown

rysh
n
##pane listen orchestrator
##>event:print:Build started at 10:30 AM
##>event:print:Compiling module auth

Keys used

EnterCtrl+pEscapeTab

Transcript

0:00Lines starting with double-hash-greater-than bypass the shell and fly straight to NATS.

0:03Start rysh and split a second pane. We'll have this worker listen to the first pane's shared output.

0:09In rysh mode, ##pane listen forwards another pane's shared output here. Event payloads arrive without an alias prefix.

0:18Hop to the orchestrator pane and switch it to rysh mode so we can emit a pipeline event.

0:34Send as many as you like. Each event is a clean line in the shared output buffer, visible to every listening pane.

Key takeaway
##> lines are pipeline events that skip the PTY and publish clean lines to NATS, visible to every listening pane.