@juspay/neurolink/dist/lib/evaluation/retryManager.js

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/**
 * @file Implements the RetryManager class for handling evaluation retries.
 */
/**
 * Manages the retry logic for the auto-evaluation middleware. It decides if a
 * retry is warranted based on the evaluation score and prepares the options
 * for the next generation attempt by incorporating feedback into the prompt.
 */
export class RetryManager {
    maxRetries;
    constructor(maxRetries = 2) {
        // Total 3 attempts: 1 initial + 2 retries
        this.maxRetries = maxRetries;
    }
    /**
     * Determines if a retry should be attempted based on the evaluation result.
     *
     * @param evaluation The `EvaluationResult` of the last attempt.
     * @returns `true` if the response did not pass and the maximum number of retries has not been reached.
     */
    shouldRetry(evaluation) {
        // Attempt number is 1-based. If attempt 1 fails, we can retry.
        // If attempt 3 (maxRetries + 1) fails, we stop.
        return !evaluation.isPassing && evaluation.attemptNumber <= this.maxRetries;
    }
    /**
     * Prepares the options for the next generation attempt by creating a new,
     * improved prompt that includes feedback from the failed evaluation.
     *
     * @param originalOptions The original `TextGenerationOptions` from the user request.
     * @param evaluation The `EvaluationResult` of the failed attempt.
     * @returns A new `TextGenerationOptions` object with an improved prompt.
     */
    prepareRetryOptions(originalOptions, evaluation) {
        const originalPrompt = originalOptions.prompt || originalOptions.input?.text || "";
        const newPrompt = this.buildRetryPrompt(originalPrompt, evaluation.suggestedImprovements, evaluation.attemptNumber + 1);
        // Return a new options object with the updated prompt
        return {
            ...originalOptions,
            prompt: newPrompt,
            // Ensure input is not carried over if prompt is now the source of truth
            input: undefined,
            // Carry over the original prompt for context in subsequent retries if needed
            originalPrompt: originalOptions.originalPrompt || originalPrompt,
        };
    }
    /**
     * Builds a new prompt for a retry attempt by incorporating feedback from the
     * evaluation. The instructions become progressively more direct with each attempt.
     *
     * @param originalPrompt The user's original prompt.
     * @param feedback The constructive feedback from the evaluation.
     * @param attemptNumber The upcoming attempt number (e.g., 2 for the first retry).
     * @returns A new, enhanced prompt string.
     */
    buildRetryPrompt(originalPrompt, feedback, attemptNumber) {
        let instruction;
        switch (attemptNumber) {
            case 2: // First retry
                instruction = `The previous response was not satisfactory. Please improve it based on the following feedback: "${feedback}".`;
                break;
            case 3: // Second retry
                instruction = `The last response still requires improvement. Pay close attention to this feedback: "${feedback}". You MUST address these points.`;
                break;
            default: // Final retry or unexpected attempt number
                instruction = `This is the final attempt. You MUST address the following feedback to generate a satisfactory response: "${feedback}".`;
                break;
        }
        return `
    Original Request: ${originalPrompt}

    **Correction Instructions:**
    ${instruction}

    Generate a new, complete response that incorporates this feedback.
  `;
    }
}
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