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Flow Controls provide the ability to control the flow of execution from inside a piece. By using the ctx parameter in the run method of actions, you can perform various operations to control the flow.

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Stop Flow

You can stop the flow and provide a response to the webhook trigger. This can be useful when you want to terminate the execution of the piece and send a specific response back. Example with Response: 
context.run.stop({
  response: {
    status: context.propsValue.status ?? StatusCodes.OK,
    body: context.propsValue.body,
    headers: (context.propsValue.headers as Record<string, string>) ?? {},
  },
});
Example without Response: 
context.run.stop();

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Pause Flow and Wait for Webhook

You can pause flow and return HTTP response, also provide a callback to URL that you can call with certain payload and continue the flow. Example: 
ctx.run.pause({
  pauseMetadata: {
    type: PauseType.WEBHOOK,
    response: {
      callbackUrl: context.generateResumeUrl({
        queryParams: {},
      }),
    },
  },
});

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Pause Flow and Delay

You can pause or delay the flow until a specific timestamp. Currently, the only supported type of pause is a delay based on a future timestamp. Example: 
ctx.run.pause({
    pauseMetadata: {
        type: PauseType.DELAY,
        resumeDateTime: futureTime.toUTCString()
    }
});
These flow hooks give you control over the execution of the piece by allowing you to stop the flow or pause it until a certain condition is met. You can use these hooks to customize the behavior and flow of your actions.
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