src-connectors 0.1.0

High-performance data connectors for SQL Server, Spark, Iceberg, and JDBC.

src-connectors

The ultimate library for high-speed data connectivity, querying, and reading.

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📖 What is src-connectors?

src-connectors is a professional-grade Python library designed to simplify the complexity of connecting to, querying, and reading data from multiple sources. It provides a standardized, high-performance interface for data engineers and analysts to pull data into their applications without worrying about underlying driver intricacies or memory management.

Whether you are fetching a small sample for exploration or streaming billions of rows for a production pipeline, src-connectors ensures your data access is reliable, secure, and fast.

Current Support:

• SQL Server: Robust connectivity via pyodbc with support for high-speed batched reads.
• Apache Spark: Modular engine setup supporting Iceberg catalogs (Hadoop/REST/S3) and JDBC data sources.

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🚀 Getting Started

Installation

Install src-connectors utilizing pip or Poetry. Choose your extras based on the platforms you need to query:

# Using pip for a specific extra
pip install "src-connectors[spark,sqlserver]"

# Using Poetry (Recommended)
poetry add "src-connectors[all]"

Quick Start

1. Querying SQL Server: Fetch data directly into a DataFrame.

from src_connectors import SQLServerConnector

connector = SQLServerConnector()
# Reading data into a pandas DataFrame
df = connector.execute_query("SELECT TOP 10 * FROM orders", output_type="dataframe")

2. Reading from Iceberg (Spark Engine): Standardized data access for big data.

from src_connectors import SparkConnector

# Initialize and configure the Iceberg catalog
connector = SparkConnector(spark_master="local[*]")
connector.configure_iceberg({"iceberg_warehouse": "prod_catalog"})
# --- Step 4: Execute Query using Spark SQL ---
# Execute a query and fetch results
df = connector.execute_query("SELECT * FROM prod_catalog.db.table", output_type="dataframe")

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📚 Documentation

For in-depth architectural overviews, detailed configuration settings, and complex usage examples, please refer to the unified documentation in the docs/ folder:

• Index Overview
• SQL Server Connector Guide
• Apache Spark (Iceberg & JDBC) Guide

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🏗 Architecture & Design

The library is built on a Modular Connector Pattern. Every component focuses on a specific data source while sharing a common execution interface. This decoupling allows engineers to inject custom configurations without breaking the core read/query logic.

Execution Logic:
Connector Initialization → Component Configuration → Unified Connection → Optimized Query Execution

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✨ Key Features

• Querying Consistency: One standard execute_query() method across all connectors, supporting SQL and Spark SQL.
• Optimized Data Reading: Native support for returning DataFrames (Pandas/Spark), Lists of Dictionaries, or NumPy Arrays.
• Memory-Safe Batching: Integrated stream=True functionality for reading large datasets through Python Generators to prevent memory overflow.
• Enterprise Configuration: Layered settings management allowing for Environment defaults with per-query overwrites.
• Security-First: Automatic protection and masking of credentials in all logs and metadata exports.
• Cloud-Ready Big Data: Specialized support for Iceberg REST Catalogs, OAuth2, and MinIO/S3 compatible storage.

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🛠 Supported Data Sources

Connector	Source	Driver/Engine	Role
SQLServerConnector	SQL Server	pyodbc	Query & Read
SparkConnector	Spark / Iceberg / JDBC	pyspark	Query & Big Data Read
OracleConnector	Oracle DB	oracledb	Coming Soon
PostgresConnector	PostgreSQL	psycopg3	Planned
TrinoConnector	Trino	trino	Planned

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🔮 Roadmap

We are expanding src-connectors to become the default data access layer for all modern infrastructures:

• Federated Query Engines: Adding Trino and Presto support for cross-catalog querying.
• Streaming Sinks: Support for writing queried data into Kafka or RabbitMQ.
• Advanced Authentication: Native integration with AWS Secrets Manager, Azure Key Vault, and HashiCorp Vault.
• Observability: Built-in OpenTelemetry hooks to track query performance and latency.

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🤝 Contributing & License

Contributions, issues, and feature requests are welcome! Feel free to check the issues page.

This project is licensed under the terms of the MIT license.