How to visualize the output in the pipeline.

[linkedlist771]

Describe the bug

This is not a bug, but a feature request. I am using the langflow to build a fine tune pipeline, but now I found the finetune part is ver time-consuming. So I want to show the mid-output of the pipeline in the front UI, what should I do?

[dosubot[bot]]

🤖

Hey @linkedlist771! I'm Dosu, an AI bot here to assist you with Langflow issues, answer any questions you might have, and help you contribute where you'd like to. While you're waiting for a human maintainer, feel free to ask me anything. Looking forward to working with you on this!

To display the intermediate output of the pipeline in the langflow UI, you can utilize the sseData state variable provided by the SSEContext. This variable is updated by the updateSSEData function, which merges the new data with the previous data.

You can use the useSSE hook to access these variables and functions in your component. Here is an example of how you can display the data:

import React from 'react';
import { useSSE } from './contexts/SSEContext';

function MyComponent() {
  const { sseData } = useSSE();

  return (
    <div>
      <h1>Intermediate Output</h1>
      <pre>{JSON.stringify(sseData, null, 2)}</pre>
    </div>
  );
}

export default MyComponent;

In this example, MyComponent is a functional component that uses the useSSE hook to access the sseData variable. It then displays the data as a JSON string in a <pre> element. The JSON.stringify function is used to convert the sseData object into a string, and the second and third arguments are used to format the string with indentation for readability.

The sseData state variable is updated in the SSEContext using the updateSSEData function. This function is defined using the useCallback hook and takes newData as a parameter. Inside the function, the setSSEData state setter function is called with a callback function that takes prevData as a parameter. This callback function returns a new object that spreads the properties of prevData and newData, effectively merging the old and new data. This merged data is then set as the new state for sseData.

Here is the relevant code:

const updateSSEData = useCallback((newData: any) => {
  setSSEData((prevData) => ({
    ...prevData,
    ...newData,
  }));
}, []);

This updateSSEData function is then provided as part of the value for the SSEContext.Provider, allowing it to be used by components that consume the SSEContext.

You can find more details in the SSEContext.tsx file in the langflow repository.

I hope this helps! If you have any other questions, feel free to ask.

Best, Dosu

Sources

• src/frontend/src/contexts/SSEContext.tsx

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