@juspay/neurolink/dist/autoresearch/summaryParser.js

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/**
 * Deterministic experiment log parser.
 *
 * Extracts metrics from run.log output. Never throws — returns
 * crashed/timedOut summary on parse failure.
 */
/**
 * Parse experiment output into a structured summary.
 *
 * This function is deterministic and pure — no side effects, no throws.
 */
export function parseExperimentSummary(logContent, metricConfig, memoryConfig, options) {
    const lines = logContent.split("\n");
    const tailLines = lines.slice(-50);
    const rawTail = tailLines.join("\n");
    // Check for crash indicators (only if not already determined by exit code)
    let crashed = options?.exitCode !== undefined &&
        options.exitCode !== 0 &&
        !options?.timedOut;
    if (!crashed) {
        const lastMeaningfulLine = [...lines]
            .reverse()
            .find((l) => l.trim().length > 0)
            ?.trim() ?? "";
        crashed =
            lastMeaningfulLine === "FAIL" ||
                lastMeaningfulLine.toLowerCase().includes("traceback") ||
                lastMeaningfulLine.toLowerCase().includes("error:");
    }
    // Parse primary metric
    let metric = null;
    try {
        const regex = new RegExp(metricConfig.pattern, "m");
        const match = regex.exec(logContent);
        if (match && match[1]) {
            const parsed = parseFloat(match[1]);
            if (!isNaN(parsed) && isFinite(parsed)) {
                metric = parsed;
            }
        }
    }
    catch {
        // Invalid regex — treat as parse failure
    }
    // Parse memory metric
    let memoryValue = null;
    if (memoryConfig) {
        try {
            const regex = new RegExp(memoryConfig.pattern, "m");
            const match = regex.exec(logContent);
            if (match && match[1]) {
                const parsed = parseFloat(match[1]);
                if (!isNaN(parsed) && isFinite(parsed)) {
                    memoryValue = parsed;
                    // Convert MB to GB if the name suggests MB.
                    // Uses binary divisor (1024 = MiB→GiB). For decimal MB→GB use 1000.
                    // The 1024 convention matches GPU monitoring tools (nvidia-smi, etc.).
                    const MIB_TO_GIB_DIVISOR = 1024;
                    if (memoryConfig.name.toLowerCase().includes("mb")) {
                        memoryValue =
                            Math.round((memoryValue / MIB_TO_GIB_DIVISOR) * 100) / 100;
                    }
                }
            }
        }
        catch {
            // Invalid regex — treat as parse failure
        }
    }
    // Parse training time
    let trainingSeconds = null;
    try {
        const timeRegex = /^training_seconds:\s+([\d.]+)/m;
        const match = timeRegex.exec(logContent);
        if (match && match[1]) {
            trainingSeconds = parseFloat(match[1]);
        }
    }
    catch {
        // Ignore
    }
    // Only treat as timeout if explicitly signaled by the runner — don't infer from missing metric
    const timedOut = options?.timedOut ?? false;
    // Missing metric without explicit timeout is a crash (regex failure, spawn error, etc.)
    const finalCrashed = crashed || (metric === null && !timedOut);
    return {
        crashed: finalCrashed,
        timedOut,
        metric,
        memoryValue,
        trainingSeconds,
        rawTail,
    };
}