lht 0.1.8

Lakehouse Tools for Snowflake and Salesforce

Lake House Tools (LHT) - Salesforce & Snowflake Integration

A comprehensive Python library for intelligent data synchronization between Salesforce and Snowflake, featuring automated method selection based on data volume and previous sync status.

🚀 Features

Intelligent Synchronization

• Automatic Method Selection: Choose the best sync method based on data volume
• Incremental Sync: Smart detection of changed records since last sync
• Bulk API 2.0 Integration: Efficient handling of large datasets
• Snowflake Stage Support: Optimized for Snowflake Notebook environments

Core Capabilities

• Salesforce Bulk API 2.0: Full support for bulk operations
• Snowflake Integration: Native Snowpark support
• Data Type Mapping: Automatic Salesforce to Snowflake type conversion
• Error Handling: Comprehensive error management and recovery
• Performance Optimization: Stage-based processing for large datasets

📦 Installation

pip install lht

🎯 Quick Start

Basic Intelligent Sync

from lht.salesforce.intelligent_sync import sync_sobject_intelligent

# Sync Account object intelligently
result = sync_sobject_intelligent(
    session=session,
    access_info=access_info,
    sobject="Account",
    schema="RAW",
    table="ACCOUNTS",
    match_field="ID"
)

print(f"Synced {result['actual_records']} records using {result['sync_method']}")

Advanced Sync with Stage

# For large datasets in Snowflake Notebooks
result = sync_sobject_intelligent(
    session=session,
    access_info=access_info,
    sobject="Contact",
    schema="RAW",
    table="CONTACTS",
    match_field="ID",
    use_stage=True,
    stage_name="@SALESFORCE_STAGE"
)

🔧 How It Works

Decision Matrix

The system automatically selects the optimal sync method:

Scenario	Records	Method	Description
First-time sync	< 1,000	regular_api_full	Use regular Salesforce API
First-time sync	1,000 - 49,999	bulk_api_full	Use Bulk API 2.0
First-time sync	≥ 50,000	bulk_api_stage_full	Use Bulk API 2.0 with Snowflake stage
Incremental sync	< 1,000	regular_api_incremental	Use regular API with merge logic
Incremental sync	1,000 - 49,999	bulk_api_incremental	Use Bulk API 2.0
Incremental sync	≥ 50,000	bulk_api_stage_incremental	Use Bulk API 2.0 with stage

Incremental Sync Logic

1. Check Table Existence: Determines if target table exists
2. Get Last Modified Date: Queries MAX(LASTMODIFIEDDATE) from existing table
3. Estimate Record Count: Counts records modified since last sync
4. Choose Method: Selects appropriate sync method based on count
5. Execute Sync: Runs the chosen method

📚 Documentation

• Intelligent Sync Guide: Comprehensive guide to the intelligent sync system
• Snowflake Stage Integration: Stage-based processing documentation
• Examples: Complete working examples

🔄 Sync Methods

1. Regular API Methods

• Use cases: Small datasets (< 1,000 records)
• Advantages: Fast for small datasets, real-time processing
• Disadvantages: API rate limits, memory intensive

2. Bulk API 2.0 Methods

• Use cases: Medium to large datasets (1,000+ records)
• Advantages: Handles large datasets efficiently, built-in retry logic
• Disadvantages: Requires job management, asynchronous processing

3. Stage-Based Methods

• Use cases: Very large datasets (50,000+ records) in Snowflake Notebooks
• Advantages: Handles massive datasets, better memory management
• Disadvantages: Requires stage setup, Snowflake-specific

🛠️ Configuration

Custom Thresholds

from lht.salesforce.intelligent_sync import IntelligentSync

sync_system = IntelligentSync(session, access_info)
sync_system.BULK_API_THRESHOLD = 5000    # Use Bulk API for 5K+ records
sync_system.STAGE_THRESHOLD = 25000      # Use stage for 25K+ records

Environment Setup

# Create stage for large datasets
session.sql("CREATE OR REPLACE STAGE @SALESFORCE_STAGE").collect()

# Set appropriate warehouse size
session.sql("USE WAREHOUSE LARGE_WH").collect()

📊 Return Values

Sync functions return detailed information:

{
    'sobject': 'Account',
    'target_table': 'RAW.ACCOUNTS',
    'sync_method': 'bulk_api_incremental',
    'estimated_records': 1500,
    'actual_records': 1487,
    'sync_duration_seconds': 45.23,
    'last_modified_date': Timestamp('2024-01-15 10:30:00'),
    'sync_timestamp': Timestamp('2024-01-16 14:20:00'),
    'success': True,
    'error': None
}

🚨 Error Handling

The system includes comprehensive error handling for:

• Authentication errors
• Network issues
• Job failures
• Data errors

Errors are captured in the return value:

{
    'success': False,
    'error': 'Bulk API job failed with state: Failed',
    'records_processed': 0
}

🔧 Advanced Usage

Multiple Object Sync

objects_to_sync = [
    {"sobject": "Account", "table": "ACCOUNTS"},
    {"sobject": "Contact", "table": "CONTACTS"},
    {"sobject": "Opportunity", "table": "OPPORTUNITIES"}
]

results = []
for obj in objects_to_sync:
    result = sync_sobject_intelligent(
        session=session,
        access_info=access_info,
        sobject=obj['sobject'],
        schema="RAW",
        table=obj['table'],
        match_field="ID"
    )
    results.append(result)

Force Full Sync

# Useful for data refresh or after schema changes
result = sync_sobject_intelligent(
    session=session,
    access_info=access_info,
    sobject="Account",
    schema="RAW",
    table="ACCOUNTS",
    match_field="ID",
    force_full_sync=True  # Overwrites entire table
)

📈 Performance Considerations

Memory Usage

• Regular API: Loads all data in memory
• Bulk API: Processes in batches
• Stage-based: Minimal memory usage

Processing Time

• Small datasets (< 1K): Regular API fastest
• Medium datasets (1K-50K): Bulk API optimal
• Large datasets (> 50K): Stage-based best

🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests
5. Submit a pull request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🔗 Related Documentation

• PyPI Upload Guide: Instructions for uploading to PyPI
• NPI App Documentation: NPI Streamlit application guide