FEAT: BCP implementation in mssql-python driver using rust

[subrata-ms]

AB#41033

GitHub Issue: #<ISSUE_NUMBER>

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Summary

This pull request introduces a new method to the cursor.py file that enables efficient bulk copy operations using a Rust-based implementation. The main addition is the _bulkcopy method, which leverages the mssql_py_core Rust library to perform high-performance data transfers from Python into SQL Server tables. The method includes robust input validation, connection handling, and error management.

Bulk Copy Feature:

• Added a new _bulkcopy method to the cursor.py class, allowing bulk data insertion into a SQL Server table using the Rust-based mssql_py_core library. This method supports configurable batch size, timeout, and column mappings, and provides detailed error handling and resource cleanup.

Input Validation and Error Handling:

• The _bulkcopy method validates its parameters (such as table_name, batch_size, and timeout) and checks for the presence of required connection string components, raising appropriate exceptions for invalid input or missing dependencies.

Integration and Resource Management:

• Ensures that Rust resources (connection and cursor) are properly closed after the operation, even in the case of exceptions, to prevent resource leaks.

[Copilot]

Pull request overview

This PR adds a new _bulkcopy method to the Cursor class that enables high-performance bulk data insertion into SQL Server tables using a Rust-based implementation from the mssql_py_core library. The implementation includes connection string parsing, input validation, error handling, and resource cleanup.

Changes:

• Added _bulkcopy method supporting bulk copy operations with configurable batch size and timeout
• Implemented connection string parsing to extract database connection parameters
• Added comprehensive error handling and resource cleanup mechanisms

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 5 comments.

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[github-actions]

📊 Code Coverage Report

🔥 Diff Coverage 100%

🎯 Overall Coverage 76%

📈 Total Lines Covered: 5442 out of 7118 📁 Project: mssql-python

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Diff Coverage

Diff: main...HEAD, staged and unstaged changes

• mssql_python/cursor.py (100%)

Summary

• Total: 1 line
• Missing: 0 lines
• Coverage: 100%

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📋 Files Needing Attention

📉 Files with overall lowest coverage (click to expand)

mssql_python.pybind.logger_bridge.hpp: 58.8%
mssql_python.pybind.logger_bridge.cpp: 59.2%
mssql_python.row.py: 66.2%
mssql_python.helpers.py: 67.5%
mssql_python.pybind.ddbc_bindings.cpp: 69.4%
mssql_python.pybind.ddbc_bindings.h: 71.7%
mssql_python.pybind.connection.connection.cpp: 73.6%
mssql_python.ddbc_bindings.py: 79.6%
mssql_python.pybind.connection.connection_pool.cpp: 79.6%
mssql_python.connection.py: 84.1%

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[saurabh500]

Left some API docs comments and some comments about removal of references to programming languages i.e. Python and Rust.