62 lines
2.0 KiB
Rust
62 lines
2.0 KiB
Rust
// --- Declare our new modules ---
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mod config;
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mod parser;
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// --- External Crates ---
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use pyo3::prelude::*;
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use pyo3::exceptions::PyValueError;
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use tokio;
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// --- Internal Crates ---
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use crate::config::{load_and_validate_config, ConnectorConfig};
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use crate::parser::run_db_logic;
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// FIX: Import the Arrow bridge trait
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use pyo3_arrow::PyArrowConvert;
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// --- THE PYTHON-CALLABLE ENTRY POINT ---
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#[pyfunction]
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#[allow(unsafe_code)]
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#[allow(unsafe_op_in_unsafe_fn)]
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#[allow(rust_2024_compatibility)]
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// FIX: Change the return type from () to PyObject
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fn load_data_from_config(py: Python, config_path: String) -> PyResult<PyObject> {
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// --- Phase 1: Load and Validate Configuration ---
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let config: ConnectorConfig = match load_and_validate_config(&config_path) {
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Ok(c) => c,
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Err(e) => return Err(PyValueError::new_err(format!("Configuration Error: {:?}", e))),
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};
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println!("--- UncheckedIO: Schema Accepted ---");
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println!("Database: {}", config.connection_string);
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println!("Columns (in order): {:?}", config.schema.iter().map(|c| &c.column_name).collect::<Vec<_>>());
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// --- Phase 2: Run Core Logic ---
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// We release the GIL and start our own Tokio runtime
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let record_batch = py.allow_threads(|| {
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tokio::runtime::Builder::new_multi_thread()
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.enable_all()
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.build()
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.unwrap()
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.block_on(async {
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run_db_logic(config).await
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})
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}).map_err(|e| PyValueError::new_err(format!("Database/Runtime Error: {:?}", e)))?;
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// --- Phase 3: Return Data to Python ---
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// FIX: Convert the Rust RecordBatch to a Python PyObject (a pyarrow.Table)
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// This is a ZERO-COPY operation.
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record_batch.to_pyarrow(py)
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}
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// --- PYTHON MODULE EXPORT ---
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#[pymodule]
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// FIX: Add the attribute to enable Arrow <-> Python conversion
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#[pyo3(with_arrow)]
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fn unchecked_io(_py: Python, m: &PyModule) -> PyResult<()> {
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m.add_function(wrap_pyfunction!(load_data_from_config, m)?)?;
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Ok(())
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} |