Run.observeStream()

The .observeStream() method opens a new ReadableStream to a workflow run that is currently running, allowing you to observe the stream of events if the original stream is no longer available.

Usage example

const run = await workflow.createRun();

run.stream({
  inputData: {
    value: "initial data",
  },
});

const stream = await run.observeStream();

for await (const chunk of stream) {
  console.log(chunk);
}

Returns

ReadableStream<ChunkType>

Stream Events

The stream emits various event types during workflow execution. Each event has a type field and a payload containing relevant data:

• workflow-start: Workflow execution begins
• workflow-step-start: A step begins execution
• workflow-step-output: Custom output from a step
• workflow-step-result: A step completes with results
• workflow-finish: Workflow execution completes with usage statistics

Related

• Workflows overview
• Workflow.createRun()
• Run.stream()
• Run.resumeStream()