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PostgreSQL State Manager for MCPMark
=====================================
Manages database state for PostgreSQL tasks including schema setup,
test data creation, and cleanup.
"""
import os
import subprocess
import sys
import psycopg2
from psycopg2 import sql
from pathlib import Path
from typing import Optional, Dict, Any, List
from src.base.state_manager import BaseStateManager, InitialStateInfo
from src.base.task_manager import BaseTask
from src.logger import get_logger
logger = get_logger(__name__)
class PostgresStateManager(BaseStateManager):
"""Manages PostgreSQL database state for task evaluation."""
def __init__(
self,
host: str = "localhost",
port: int = 5432,
database: str = "postgres",
username: str = "postgres",
password: str = None,
):
"""Initialize PostgreSQL state manager.
Args:
host: Database host
port: Database port
database: Main database name
username: Database username
password: Database password
template_db: Template database for initial states
"""
super().__init__(service_name="postgres")
self.host = host
self.port = port
self.database = database
self.username = username
self.password = password
# Connection parameters
self.conn_params = {
"host": host,
"port": port,
"user": username,
"password": password,
}
# Track created databases for cleanup
self.created_databases: List[str] = []
# Track current task database for agent configuration
self._current_task_database: Optional[str] = None
# Validate connection on initialization
try:
self._test_connection()
logger.info("PostgreSQL state manager initialized successfully")
self._setup_database()
except Exception as e:
raise RuntimeError(f"PostgreSQL initialization failed: {e}")
def _test_connection(self):
"""Test database connection."""
conn = psycopg2.connect(**self.conn_params, database="postgres")
conn.close()
def _setup_database(self):
"""Setup all required databases by downloading and restoring from backup."""
databases = ['employees', 'chinook', 'dvdrental', 'sports', 'lego']
for db_name in databases:
if not self._database_exists(db_name):
logger.info(f"Setting up {db_name} database...")
# Path to backup file
backup_dir = Path(__file__).parent.parent.parent.parent / "postgres_state"
backup_file = backup_dir / f"{db_name}.backup"
# Download backup if not exists
if not backup_file.exists():
backup_dir.mkdir(parents=True, exist_ok=True)
logger.info(f"Downloading {db_name} backup...")
try:
import urllib.request
urllib.request.urlretrieve(
f'https://storage.mcpmark.ai/postgres/{db_name}.backup',
str(backup_file)
)
logger.info(f"{db_name} backup downloaded")
except Exception as e:
logger.warning(f"Failed to download {db_name} backup: {e}")
continue
# Create database
try:
self._create_empty_database(db_name)
logger.info(f"Created {db_name} database")
except Exception as e:
logger.warning(f"Failed to create {db_name} database: {e}")
continue
# Restore from backup
env = os.environ.copy()
env['PGPASSWORD'] = self.password
try:
result = subprocess.run([
'pg_restore',
'-h', str(self.host),
'-p', str(self.port),
'-U', self.username,
'-d', db_name,
'-v',
str(backup_file)
], env=env, capture_output=True, text=True)
if result.returncode != 0:
logger.warning(f"pg_restore had errors for {db_name}: {result.stderr}")
else:
logger.info(f"{db_name} database restored successfully")
except Exception as e:
logger.warning(f"Failed to restore {db_name} database: {e}")
else:
logger.debug(f"{db_name} database already exists")
def _setup_database(self):
"""Setup all required databases by downloading and restoring from backup."""
databases = ['employees', 'chinook', 'dvdrental', 'sports', 'lego']
for db_name in databases:
if not self._database_exists(db_name):
logger.info(f"Setting up {db_name} database...")
# Path to backup file
backup_dir = Path(__file__).parent.parent.parent.parent / "postgres_state"
backup_file = backup_dir / f"{db_name}.backup"
# Download backup if not exists
if not backup_file.exists():
backup_dir.mkdir(parents=True, exist_ok=True)
logger.info(f"Downloading {db_name} backup...")
try:
import urllib.request
urllib.request.urlretrieve(
f'https://storage.mcpmark.ai/postgres/{db_name}.backup',
str(backup_file)
)
logger.info(f"{db_name} backup downloaded")
except Exception as e:
logger.warning(f"Failed to download {db_name} backup: {e}")
continue
# Create database
try:
self._create_empty_database(db_name)
logger.info(f"Created {db_name} database")
except Exception as e:
logger.warning(f"Failed to create {db_name} database: {e}")
continue
# Restore from backup
env = os.environ.copy()
env['PGPASSWORD'] = self.password
try:
result = subprocess.run([
'pg_restore',
'-h', str(self.host),
'-p', str(self.port),
'-U', self.username,
'-d', db_name,
'-v',
str(backup_file)
], env=env, capture_output=True, text=True)
if result.returncode != 0 and "ERROR" in result.stderr:
logger.warning(f"pg_restore had errors for {db_name}: {result.stderr}")
else:
logger.info(f"{db_name} database restored successfully")
except Exception as e:
logger.warning(f"Failed to restore {db_name} database: {e}")
else:
logger.debug(f"{db_name} database already exists")
def _create_initial_state(self, task: BaseTask) -> Optional[InitialStateInfo]:
"""Create initial database state for a task."""
try:
# Generate unique database name
db_name = f"mcpmark_{task.category_id}_{task.task_id}_{self._get_timestamp()}"
# Create database from template if exists, otherwise empty
if self._database_exists(task.category_id):
self._create_database_from_template(db_name, task.category_id)
logger.info(
f"| Created database '{db_name}' from template '{task.category_id}'"
)
else:
self._create_empty_database(db_name)
logger.info(f"| Created empty database '{db_name}'")
# Run prepare_environment.py if it exists
self._run_prepare_environment(db_name, task)
logger.info(f"| Prepared environment for database '{db_name}'")
# Track for cleanup
self.created_databases.append(db_name)
self.track_resource("database", db_name, {"task": task.name})
return InitialStateInfo(
state_id=db_name,
state_url=f"postgresql://{self.username}@{self.host}:{self.port}/{db_name}",
metadata={
"database": db_name,
"category": task.category_id,
"task_id": task.task_id,
},
)
except Exception as e:
logger.error(f"Failed to create initial state for {task.name}: {e}")
return None
def _store_initial_state_info(
self, task: BaseTask, state_info: InitialStateInfo
) -> None:
"""Store database info in task object."""
if hasattr(task, "__dict__"):
task.database_name = state_info.state_id
task.database_url = state_info.state_url
# Store current task database for agent configuration
self._current_task_database = state_info.state_id
def _cleanup_task_initial_state(self, task: BaseTask) -> bool:
"""Clean up task database."""
if hasattr(task, "database_name") and task.database_name:
try:
self._drop_database(task.database_name)
logger.info(f"| Dropped database: {task.database_name}")
# Remove from tracking
self.created_databases = [
db for db in self.created_databases if db != task.database_name
]
# Clear current task database
if self._current_task_database == task.database_name:
self._current_task_database = None
return True
except Exception as e:
logger.error(f"Failed to drop database {task.database_name}: {e}")
return False
return True
def _cleanup_single_resource(self, resource: Dict[str, Any]) -> bool:
"""Clean up a single PostgreSQL resource."""
if resource["type"] == "database":
try:
self._drop_database(resource["id"])
logger.info(f"| Dropped database: {resource['id']}")
return True
except Exception as e:
logger.error(f"| Failed to drop database {resource['id']}: {e}")
return False
return False
def _database_exists(self, db_name: str) -> bool:
"""Check if database exists."""
conn = psycopg2.connect(**self.conn_params, database="postgres")
try:
with conn.cursor() as cur:
cur.execute("SELECT 1 FROM pg_database WHERE datname = %s", (db_name,))
return cur.fetchone() is not None
finally:
conn.close()
def _create_database_from_template(self, new_db: str, template_db: str):
"""Create database from template."""
conn = psycopg2.connect(**self.conn_params, database="postgres")
conn.autocommit = True
try:
with conn.cursor() as cur:
cur.execute(
sql.SQL("""
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = %s AND pid <> pg_backend_pid()
"""),
(template_db,),
)
cur.execute(
sql.SQL("CREATE DATABASE {} WITH TEMPLATE {}").format(
sql.Identifier(new_db), sql.Identifier(template_db)
)
)
finally:
conn.close()
def _create_empty_database(self, db_name: str):
"""Create empty database."""
conn = psycopg2.connect(**self.conn_params, database="postgres")
conn.autocommit = True
try:
with conn.cursor() as cur:
cur.execute(
sql.SQL("CREATE DATABASE {}").format(sql.Identifier(db_name))
)
finally:
conn.close()
def _drop_database(self, db_name: str):
"""Drop database."""
conn = psycopg2.connect(**self.conn_params, database="postgres")
conn.autocommit = True
try:
with conn.cursor() as cur:
# Terminate connections
cur.execute(
sql.SQL("""
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = %s AND pid <> pg_backend_pid()
"""),
(db_name,),
)
# Drop database
cur.execute(
sql.SQL("DROP DATABASE IF EXISTS {}").format(
sql.Identifier(db_name)
)
)
finally:
conn.close()
def _run_prepare_environment(self, db_name: str, task: BaseTask):
"""Run prepare_environment.py script if it exists in the task directory."""
# Find the task directory containing prepare_environment.py
task_dir = task.task_instruction_path.parent
prepare_script = task_dir / "prepare_environment.py"
if not prepare_script.exists():
logger.debug(f"No prepare_environment.py found for task {task.name}")
return
logger.info(f"| Running prepare_environment.py for task {task.name}")
# Set up environment variables for the script
env = os.environ.copy()
env.update({
"POSTGRES_HOST": str(self.host),
"POSTGRES_PORT": str(self.port),
"POSTGRES_DATABASE": db_name,
"POSTGRES_USERNAME": self.username,
"POSTGRES_PASSWORD": self.password or "",
})
try:
# Run the prepare_environment.py script
result = subprocess.run(
[sys.executable, str(prepare_script)],
cwd=str(task_dir), # Run from task directory to access data/ folder
env=env,
capture_output=True,
text=True,
timeout=300, # 5 minute timeout
)
if result.returncode == 0:
logger.info(f"| ✓ Environment preparation completed for {task.name}")
if result.stdout.strip():
logger.debug(f"| prepare_environment.py output: {result.stdout}")
else:
logger.error(f"| ❌ Environment preparation failed for {task.name}")
logger.error(f"| Error output: {result.stderr}")
raise RuntimeError(f"prepare_environment.py failed with exit code {result.returncode}")
except subprocess.TimeoutExpired:
logger.error(f"❌ Environment preparation timed out for {task.name}")
raise RuntimeError("prepare_environment.py execution timed out")
except Exception as e:
logger.error(f"❌ Failed to run prepare_environment.py for {task.name}: {e}")
raise
def _setup_task_specific_data(self, db_name: str, task: BaseTask):
"""Set up task-specific schema and data."""
conn = psycopg2.connect(**self.conn_params, database=db_name)
try:
with conn.cursor() as cur:
if task.category_id == "basic_queries":
self._setup_basic_queries_data(cur)
elif task.category_id == "data_manipulation":
self._setup_data_manipulation_data(cur)
elif task.category_id == "table_operations":
self._setup_table_operations_data(cur)
# Add more categories as needed
conn.commit()
except Exception as e:
conn.rollback()
logger.error(f"Failed to setup task data: {e}")
raise
finally:
conn.close()
def _setup_basic_queries_data(self, cursor):
"""Set up data for basic query tasks."""
cursor.execute("""
CREATE TABLE employees (
id SERIAL PRIMARY KEY,
name VARCHAR(100) NOT NULL,
department VARCHAR(50),
salary DECIMAL(10, 2),
hire_date DATE
);
INSERT INTO employees (name, department, salary, hire_date) VALUES
('John Doe', 'Engineering', 75000.00, '2020-01-15'),
('Jane Smith', 'Marketing', 65000.00, '2019-03-22'),
('Bob Johnson', 'Engineering', 80000.00, '2018-07-01'),
('Alice Brown', 'HR', 55000.00, '2021-02-10');
""")
def _setup_data_manipulation_data(self, cursor):
"""Set up data for data manipulation tasks."""
cursor.execute("""
CREATE TABLE products (
id SERIAL PRIMARY KEY,
name VARCHAR(100) NOT NULL,
category VARCHAR(50),
price DECIMAL(10, 2),
stock INTEGER DEFAULT 0
);
CREATE TABLE orders (
id SERIAL PRIMARY KEY,
product_id INTEGER REFERENCES products(id),
quantity INTEGER NOT NULL,
order_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
""")
def _setup_table_operations_data(self, cursor):
"""Set up for table operation tasks."""
# Start with minimal schema that tasks will modify
cursor.execute("""
CREATE TABLE test_table (
id SERIAL PRIMARY KEY,
data VARCHAR(255)
);
""")
def _get_timestamp(self) -> str:
"""Get timestamp for unique naming."""
from datetime import datetime
return datetime.now().strftime("%Y%m%d%H%M%S")
def get_service_config_for_agent(self) -> dict:
"""Get configuration for agent execution."""
config = {
"host": self.host,
"port": self.port,
"username": self.username,
"password": self.password,
}
# If there's a current task database, include it
if hasattr(self, "_current_task_database") and self._current_task_database:
config["current_database"] = self._current_task_database
config["database_url"] = (
f"postgresql://{self.username}:{self.password}@{self.host}:{self.port}/{self._current_task_database}"
)
else:
# Fallback to default database
config["database"] = self.database
config["database_url"] = (
f"postgresql://{self.username}:{self.password}@{self.host}:{self.port}/{self.database}"
)
return config
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