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Neon PostgreSQL Database Integration
Stores job history, results, and metadata
"""
import asyncpg
import json
import os
from datetime import datetime
from typing import Optional, List, Dict, Any
class Database:
def __init__(self):
self.pool: Optional[asyncpg.Pool] = None
self.database_url = os.getenv("DATABASE_URL")
async def connect(self):
"""Initialize database connection pool"""
if not self.database_url:
print("⚠️ DATABASE_URL not set, database features disabled")
return
try:
self.pool = await asyncpg.create_pool(
self.database_url,
min_size=2,
max_size=10,
command_timeout=60
)
await self.init_tables()
print("✅ Database connected successfully")
except Exception as e:
print(f"❌ Database connection failed: {e}")
self.pool = None
async def disconnect(self):
"""Close database connections"""
if self.pool:
await self.pool.close()
print("🔌 Database disconnected")
async def init_tables(self):
"""Create tables if they don't exist"""
if not self.pool:
return
async with self.pool.acquire() as conn:
# Jobs table
await conn.execute("""
CREATE TABLE IF NOT EXISTS jobs (
id TEXT PRIMARY KEY,
prompt TEXT NOT NULL,
format TEXT NOT NULL,
status TEXT DEFAULT 'pending',
created_at TIMESTAMPTZ DEFAULT NOW(),
completed_at TIMESTAMPTZ,
file_extension TEXT,
content_type TEXT,
proxy_server TEXT,
headless BOOLEAN DEFAULT FALSE,
streaming_enabled BOOLEAN DEFAULT FALSE,
error_message TEXT
)
""")
# Job results table (stores extracted content metadata)
await conn.execute("""
CREATE TABLE IF NOT EXISTS job_results (
id SERIAL PRIMARY KEY,
job_id TEXT REFERENCES jobs(id) ON DELETE CASCADE,
content_length INTEGER,
extraction_time TIMESTAMPTZ DEFAULT NOW(),
format TEXT,
metadata JSONB
)
""")
# Proxy usage tracking
await conn.execute("""
CREATE TABLE IF NOT EXISTS proxy_stats (
id SERIAL PRIMARY KEY,
job_id TEXT REFERENCES jobs(id) ON DELETE SET NULL,
proxy_server TEXT,
success BOOLEAN,
error_message TEXT,
recorded_at TIMESTAMPTZ DEFAULT NOW()
)
""")
print("📊 Database tables initialized")
async def create_job(self, job_id: str, prompt: str, format: str,
headless: bool = False, streaming_enabled: bool = False,
proxy_server: Optional[str] = None) -> bool:
"""Create a new job record"""
if not self.pool:
return False
try:
async with self.pool.acquire() as conn:
await conn.execute("""
INSERT INTO jobs (id, prompt, format, headless, streaming_enabled, proxy_server, status)
VALUES ($1, $2, $3, $4, $5, $6, 'running')
""", job_id, prompt, format, headless, streaming_enabled, proxy_server)
return True
except Exception as e:
print(f"❌ Failed to create job: {e}")
return False
async def update_job_status(self, job_id: str, status: str,
error_message: Optional[str] = None) -> bool:
"""Update job status"""
if not self.pool:
return False
try:
async with self.pool.acquire() as conn:
completed_at = datetime.utcnow() if status in ['completed', 'failed'] else None
await conn.execute("""
UPDATE jobs
SET status = $2,
completed_at = $3,
error_message = $4
WHERE id = $1
""", job_id, status, completed_at, error_message)
return True
except Exception as e:
print(f"❌ Failed to update job status: {e}")
return False
async def update_job_info(self, job_id: str, file_extension: str,
content_type: str) -> bool:
"""Update job file information"""
if not self.pool:
return False
try:
async with self.pool.acquire() as conn:
await conn.execute("""
UPDATE jobs
SET file_extension = $2, content_type = $3
WHERE id = $1
""", job_id, file_extension, content_type)
return True
except Exception as e:
print(f"❌ Failed to update job info: {e}")
return False
async def save_job_result(self, job_id: str, content_length: int,
format: str, metadata: Dict[str, Any]) -> bool:
"""Save job result metadata"""
if not self.pool:
return False
try:
async with self.pool.acquire() as conn:
await conn.execute("""
INSERT INTO job_results (job_id, content_length, format, metadata)
VALUES ($1, $2, $3, $4)
""", job_id, content_length, format, json.dumps(metadata))
return True
except Exception as e:
print(f"❌ Failed to save job result: {e}")
return False
async def log_proxy_usage(self, job_id: str, proxy_server: str,
success: bool, error_message: Optional[str] = None) -> bool:
"""Log proxy usage for a job"""
if not self.pool:
return False
try:
async with self.pool.acquire() as conn:
await conn.execute("""
INSERT INTO proxy_stats (job_id, proxy_server, success, error_message)
VALUES ($1, $2, $3, $4)
""", job_id, proxy_server, success, error_message)
return True
except Exception as e:
print(f"❌ Failed to log proxy usage: {e}")
return False
async def get_job(self, job_id: str) -> Optional[Dict[str, Any]]:
"""Get job by ID"""
if not self.pool:
return None
try:
async with self.pool.acquire() as conn:
row = await conn.fetchrow("""
SELECT * FROM jobs WHERE id = $1
""", job_id)
if row:
return dict(row)
return None
except Exception as e:
print(f"❌ Failed to get job: {e}")
return None
async def get_all_jobs(self, limit: int = 50, offset: int = 0) -> List[Dict[str, Any]]:
"""Get all jobs with pagination"""
if not self.pool:
return []
try:
async with self.pool.acquire() as conn:
rows = await conn.fetch("""
SELECT * FROM jobs
ORDER BY created_at DESC
LIMIT $1 OFFSET $2
""", limit, offset)
return [dict(row) for row in rows]
except Exception as e:
print(f"❌ Failed to get jobs: {e}")
return []
async def get_job_stats(self) -> Dict[str, Any]:
"""Get overall job statistics"""
if not self.pool:
return {}
try:
async with self.pool.acquire() as conn:
stats = await conn.fetchrow("""
SELECT
COUNT(*) as total_jobs,
COUNT(*) FILTER (WHERE status = 'completed') as completed,
COUNT(*) FILTER (WHERE status = 'failed') as failed,
COUNT(*) FILTER (WHERE status = 'running') as running
FROM jobs
""")
return dict(stats) if stats else {}
except Exception as e:
print(f"❌ Failed to get stats: {e}")
return {}
async def delete_job(self, job_id: str) -> bool:
"""Delete a job and its results"""
if not self.pool:
return False
try:
async with self.pool.acquire() as conn:
await conn.execute("DELETE FROM jobs WHERE id = $1", job_id)
return True
except Exception as e:
print(f"❌ Failed to delete job: {e}")
return False
# Global database instance
db = Database()
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