Sync Job Production Fixes

Date: November 10, 2025 Commit: 492134a6 Status: ✅ Fixed

Overview

Fixed two critical issues preventing sync jobs from executing successfully on the production server (Fly.io):

1. Rclone Binary Not Found - /bin/sh: rclone.exe: not found
2. Google Drive Folder ID Resolution Failing - 404 errors causing sync operations to fail silently

Issue 1: Rclone Binary Not Found (CRITICAL)

Problem

Sync jobs were failing on production with error:

/bin/sh: rclone.exe: not found

Root Cause

The rclone executable name was hardcoded to "rclone.exe" in fly-rclone/src/constants.js:

const RCLONE = {
  EXECUTABLE: "rclone.exe",  // ❌ Windows-only executable name
  // ...
};

Environment Mismatch:

• Development (Windows): Uses rclone.exe.
• Production (Fly.io/Linux): Uses rclone (installed at /usr/bin/rclone).

The code was trying to execute rclone.exe on a Linux server, which doesn't exist.

Solution

Created OS-aware rclone path resolution:

1. New Utility File: fly-rclone/src/utils/rclonePath.js

function resolveRclonePath() {
  // 1) Check environment variables first
  const envPath = process.env.RCLONE_PATH || process.env.FLY_RCLONE_PATH;
  if (envPath) return envPath;

  // 2) Check for local binary (OS-aware)
  const defaultExec = process.platform === "win32" ? "rclone.exe" : "rclone";
  const localPath = join(__dirname, "..", "..", defaultExec);
  if (existsSync(localPath)) return localPath;

  // 3) Fall back to system PATH
  return defaultExec;
}

const RCLONE_PATH = resolveRclonePath();
module.exports = { resolveRclonePath, RCLONE_PATH };