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"""
SQL Test Runner using Modal (SECONDARY SPONSOR)
Provides serverless SQL execution for testing queries
"""
import os
from typing import Dict, Any
# Try to import Modal, but don't fail if not available
try:
import modal
MODAL_AVAILABLE = True
except ImportError:
MODAL_AVAILABLE = False
print("⚠️ Modal not available. Install with: pip install modal")
# Try to import DuckDB for local fallback
try:
import duckdb
DUCKDB_AVAILABLE = True
except ImportError:
DUCKDB_AVAILABLE = False
print("⚠️ DuckDB not available for local testing fallback")
class SQLTestRunner:
"""
Test runner for SQL queries
Uses Modal for serverless execution, with DuckDB fallback
"""
def __init__(self):
self.modal_available = MODAL_AVAILABLE
self.duckdb_available = DUCKDB_AVAILABLE
# Initialize Modal app if available
if self.modal_available:
try:
self.app = modal.App("codeflow-sql-tester")
self._setup_modal()
except Exception as e:
print(f"⚠️ Modal setup failed: {e}")
self.modal_available = False
def _setup_modal(self):
"""Setup Modal function for SQL execution"""
if not self.modal_available:
return
try:
# Define Modal image with DuckDB
image = modal.Image.debian_slim().pip_install("duckdb==0.9.2")
# Define Modal function
@self.app.function(image=image, timeout=60)
def execute_sql_modal(sql: str, sample_data: dict = None) -> dict:
"""Execute SQL in Modal sandbox"""
import duckdb
try:
# Create in-memory DuckDB database
conn = duckdb.connect(':memory:')
# If sample data provided, create tables
if sample_data:
for table_name, data in sample_data.items():
conn.execute(f"CREATE TABLE {table_name} AS SELECT * FROM ?", [data])
# Execute the SQL
result = conn.execute(sql).fetchall()
columns = [desc[0] for desc in conn.description] if conn.description else []
conn.close()
return {
"success": True,
"rows": result[:100], # Limit to 100 rows
"row_count": len(result),
"columns": columns,
"error": None
}
except Exception as e:
return {
"success": False,
"rows": [],
"row_count": 0,
"columns": [],
"error": str(e)
}
self.execute_sql_modal = execute_sql_modal
except Exception as e:
print(f"⚠️ Modal function setup failed: {e}")
self.modal_available = False
def test_sql(self, sql: str, sample_data: Dict = None) -> Dict[str, Any]:
"""
Test SQL query execution
Args:
sql: SQL query to test
sample_data: Optional sample data as dict of table_name -> rows
Returns:
Dict with test results
"""
# Try Modal first if available
if self.modal_available:
try:
result = self.execute_sql_modal.remote(sql, sample_data)
result["execution_method"] = "Modal (Serverless)"
return result
except Exception as e:
print(f"⚠️ Modal execution failed, falling back to local: {e}")
# Fallback to local DuckDB
if self.duckdb_available:
return self._test_sql_local(sql, sample_data)
# No execution method available
return {
"success": False,
"rows": [],
"row_count": 0,
"columns": [],
"error": "No SQL execution method available. Install Modal or DuckDB.",
"execution_method": "None"
}
def _test_sql_local(self, sql: str, sample_data: Dict = None) -> Dict[str, Any]:
"""Execute SQL locally using DuckDB"""
try:
conn = duckdb.connect(':memory:')
# Create sample tables if provided
if sample_data:
for table_name, data in sample_data.items():
conn.execute(f"CREATE TABLE {table_name} AS SELECT * FROM ?", [data])
# Execute SQL
result = conn.execute(sql).fetchall()
columns = [desc[0] for desc in conn.description] if conn.description else []
conn.close()
return {
"success": True,
"rows": result[:100], # Limit to 100 rows
"row_count": len(result),
"columns": columns,
"error": None,
"execution_method": "DuckDB (Local)"
}
except Exception as e:
return {
"success": False,
"rows": [],
"row_count": 0,
"columns": [],
"error": str(e),
"execution_method": "DuckDB (Local)"
}
def validate_syntax(self, sql: str) -> Dict[str, Any]:
"""
Quick syntax validation without execution
Args:
sql: SQL query to validate
Returns:
Dict with validation results
"""
if not self.duckdb_available:
return {
"valid": None,
"error": "DuckDB not available for syntax validation"
}
try:
conn = duckdb.connect(':memory:')
# Try to prepare the query (doesn't execute, just validates syntax)
conn.execute(f"EXPLAIN {sql}")
conn.close()
return {
"valid": True,
"error": None
}
except Exception as e:
return {
"valid": False,
"error": str(e)
}
def get_execution_plan(self, sql: str) -> Dict[str, Any]:
"""
Get query execution plan
Args:
sql: SQL query
Returns:
Dict with execution plan
"""
if not self.duckdb_available:
return {
"success": False,
"plan": None,
"error": "DuckDB not available"
}
try:
conn = duckdb.connect(':memory:')
plan = conn.execute(f"EXPLAIN {sql}").fetchall()
conn.close()
return {
"success": True,
"plan": "\n".join([str(row[0]) for row in plan]),
"error": None
}
except Exception as e:
return {
"success": False,
"plan": None,
"error": str(e)
}
# Singleton instance
_test_runner = None
def get_test_runner() -> SQLTestRunner:
"""Get or create the global test runner instance"""
global _test_runner
if _test_runner is None:
_test_runner = SQLTestRunner()
return _test_runner |