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Emergency repair function that resets a reMarkable cloud sync system by creating and uploading an empty root.docSchema file, then updating the root hash to restore system functionality.

Purpose

This function performs a critical system repair operation for a reMarkable cloud synchronization system. It is designed to recover from corrupted or broken sync states by: 1) Creating a minimal empty root.docSchema file with just a version header, 2) Uploading it to the reMarkable cloud server, 3) Capturing the current server generation, 4) Updating the root hash to point to the new empty schema, and 5) Verifying the system is accessible again. This is an emergency recovery procedure that resets the document schema to a clean state.

Source Code

def repair_system():
    print("🚨 EMERGENCY SYSTEM REPAIR")
    print("=" * 50)
    
    # Initialize authentication
    auth = RemarkableAuth()
    session = auth.get_authenticated_session()
    
    # Initialize upload manager with replica database path
    replica_db_path = "remarkable_replica_v2/replica_database.json"
    uploader = RemarkableUploadManager(session, replica_db_path)
    
    print("📝 Step 1: Creating empty root.docSchema...")
    # Create minimal empty root.docSchema (just version header)
    empty_root_content = "3\n".encode('utf-8')
    empty_root_hash = hashlib.sha256(empty_root_content).hexdigest()
    
    print(f"📂 Empty root.docSchema hash: {empty_root_hash}")
    
    print("📝 Step 2: Uploading empty root.docSchema to server...")
    # Upload the empty root.docSchema
    uploaded_hash = uploader.upload_system_file(empty_root_content, "root.docSchema")
    if not uploaded_hash:
        print("❌ Failed to upload empty root.docSchema")
        return False
    
    print(f"✅ Uploaded empty root.docSchema: {uploaded_hash}")
    
    print("📝 Step 3: Capturing current server generation...")
    # Capture server generation
    if not uploader._capture_server_generation():
        print("❌ Failed to capture server generation")
        return False
    
    print(f"🔍 Server generation: {uploader._server_generation}")
    
    print("📝 Step 4: Updating root hash to point to empty docSchema...")
    # Update root hash to point to the empty docSchema
    success = uploader.update_root_hash(empty_root_hash)
    if not success:
        print("❌ Failed to update root hash")
        return False
    
    print("✅ Root hash updated successfully")
    
    print("📝 Step 5: Verifying system restoration...")
    # Test that we can now get the root
    try:
        root_url = f"{uploader.base_url}/sync/v4/root"
        response = session.get(root_url)
        response.raise_for_status()
        root_data = response.json()
        
        print(f"✅ System verification successful:")
        print(f"   Root hash: {root_data['hash']}")
        print(f"   Generation: {root_data['generation']}")
        print(f"   Schema version: {root_data['schemaVersion']}")
        
        # Try to fetch the root.docSchema to verify it exists
        files_url = f"{uploader.base_url}/sync/v3/files/{root_data['hash']}"
        files_response = session.get(files_url)
        files_response.raise_for_status()
        
        print(f"✅ Root.docSchema accessible and contains: {len(files_response.text)} characters")
        
        return True
        
    except Exception as e:
        print(f"❌ System verification failed: {e}")
        return False

Return Value

Returns a boolean value: True if the entire repair process completes successfully (including upload, root hash update, and verification), False if any step fails (upload failure, generation capture failure, root hash update failure, or verification failure).

Dependencies

• json
• uuid
• hashlib
• auth
• upload_manager

Required Imports

import json
import uuid
import hashlib
from auth import RemarkableAuth
from upload_manager import RemarkableUploadManager

Usage Example

# Emergency repair of reMarkable sync system
# Ensure auth.py and upload_manager.py are available with RemarkableAuth and RemarkableUploadManager classes
# Ensure remarkable_replica_v2/replica_database.json exists

from repair_system import repair_system

# Execute the repair
success = repair_system()

if success:
    print("System repair completed successfully")
else:
    print("System repair failed - check error messages above")

Best Practices

• This function should only be used as an emergency recovery tool when the reMarkable sync system is in a broken state
• Ensure you have a backup of any important data before running this repair, as it resets the root schema to an empty state
• The function requires proper authentication credentials to be configured in RemarkableAuth
• Monitor the console output carefully as it provides detailed step-by-step progress and error information
• The function performs verification after repair - if verification fails, the system may still be in an inconsistent state
• The replica database path is hardcoded to 'remarkable_replica_v2/replica_database.json' - ensure this file exists and is accessible
• Network connectivity to reMarkable cloud services is required throughout the entire operation
• The function creates an empty root.docSchema with version '3' - ensure this version is compatible with your reMarkable system

Tags

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