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https://github.com/BerriAI/litellm.git
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252 lines
10 KiB
Python
252 lines
10 KiB
Python
import glob
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import os
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import random
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import re
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import subprocess
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import time
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from pathlib import Path
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from typing import Optional
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from litellm_proxy_extras._logging import logger
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def str_to_bool(value: Optional[str]) -> bool:
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if value is None:
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return False
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return value.lower() in ("true", "1", "t", "y", "yes")
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class ProxyExtrasDBManager:
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@staticmethod
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def _get_prisma_dir() -> str:
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"""Get the path to the migrations directory"""
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migrations_dir = os.path.dirname(__file__)
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return migrations_dir
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@staticmethod
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def _create_baseline_migration(schema_path: str) -> bool:
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"""Create a baseline migration for an existing database"""
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prisma_dir = ProxyExtrasDBManager._get_prisma_dir()
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prisma_dir_path = Path(prisma_dir)
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init_dir = prisma_dir_path / "migrations" / "0_init"
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# Create migrations/0_init directory
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init_dir.mkdir(parents=True, exist_ok=True)
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# Generate migration SQL file
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migration_file = init_dir / "migration.sql"
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try:
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# Generate migration diff with increased timeout
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subprocess.run(
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[
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"prisma",
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"migrate",
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"diff",
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"--from-empty",
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"--to-schema-datamodel",
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str(schema_path),
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"--script",
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],
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stdout=open(migration_file, "w"),
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check=True,
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timeout=30,
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) # 30 second timeout
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# Mark migration as applied with increased timeout
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subprocess.run(
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[
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"prisma",
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"migrate",
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"resolve",
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"--applied",
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"0_init",
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],
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check=True,
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timeout=30,
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)
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return True
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except subprocess.TimeoutExpired:
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logger.warning(
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"Migration timed out - the database might be under heavy load."
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)
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return False
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except subprocess.CalledProcessError as e:
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logger.warning(f"Error creating baseline migration: {e}")
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return False
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@staticmethod
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def _get_migration_names(migrations_dir: str) -> list:
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"""Get all migration directory names from the migrations folder"""
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migration_paths = glob.glob(f"{migrations_dir}/migrations/*/migration.sql")
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logger.info(f"Found {len(migration_paths)} migrations at {migrations_dir}")
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return [Path(p).parent.name for p in migration_paths]
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@staticmethod
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def _roll_back_migration(migration_name: str):
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"""Mark a specific migration as rolled back"""
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subprocess.run(
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["prisma", "migrate", "resolve", "--rolled-back", migration_name],
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timeout=60,
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check=True,
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capture_output=True,
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)
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@staticmethod
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def _resolve_specific_migration(migration_name: str):
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"""Mark a specific migration as applied"""
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subprocess.run(
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["prisma", "migrate", "resolve", "--applied", migration_name],
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timeout=60,
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check=True,
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capture_output=True,
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)
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@staticmethod
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def _resolve_all_migrations(migrations_dir: str):
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"""Mark all existing migrations as applied"""
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migration_names = ProxyExtrasDBManager._get_migration_names(migrations_dir)
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logger.info(f"Resolving {len(migration_names)} migrations")
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for migration_name in migration_names:
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try:
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logger.info(f"Resolving migration: {migration_name}")
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subprocess.run(
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["prisma", "migrate", "resolve", "--applied", migration_name],
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timeout=60,
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check=True,
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capture_output=True,
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text=True,
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)
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logger.debug(f"Resolved migration: {migration_name}")
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except subprocess.CalledProcessError as e:
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if "is already recorded as applied in the database." not in e.stderr:
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logger.warning(
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f"Failed to resolve migration {migration_name}: {e.stderr}"
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)
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@staticmethod
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def setup_database(schema_path: str, use_migrate: bool = False) -> bool:
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"""
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Set up the database using either prisma migrate or prisma db push
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Uses migrations from litellm-proxy-extras package
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Args:
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schema_path (str): Path to the Prisma schema file
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use_migrate (bool): Whether to use prisma migrate instead of db push
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Returns:
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bool: True if setup was successful, False otherwise
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"""
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use_migrate = str_to_bool(os.getenv("USE_PRISMA_MIGRATE")) or use_migrate
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for attempt in range(4):
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original_dir = os.getcwd()
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migrations_dir = ProxyExtrasDBManager._get_prisma_dir()
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os.chdir(migrations_dir)
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try:
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if use_migrate:
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logger.info("Running prisma migrate deploy")
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try:
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# Set migrations directory for Prisma
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result = subprocess.run(
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["prisma", "migrate", "deploy"],
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timeout=60,
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check=True,
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capture_output=True,
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text=True,
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)
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logger.info(f"prisma migrate deploy stdout: {result.stdout}")
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logger.info("prisma migrate deploy completed")
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return True
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except subprocess.CalledProcessError as e:
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logger.info(f"prisma db error: {e.stderr}, e: {e.stdout}")
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if "P3009" in e.stderr:
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# Extract the failed migration name from the error message
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migration_match = re.search(
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r"`(\d+_.*)` migration", e.stderr
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)
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if migration_match:
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failed_migration = migration_match.group(1)
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logger.info(
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f"Found failed migration: {failed_migration}, marking as rolled back"
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)
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# Mark the failed migration as rolled back
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subprocess.run(
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[
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"prisma",
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"migrate",
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"resolve",
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"--rolled-back",
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failed_migration,
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],
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timeout=60,
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check=True,
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capture_output=True,
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text=True,
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)
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logger.info(
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f"✅ Migration {failed_migration} marked as rolled back... retrying"
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)
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elif (
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"P3005" in e.stderr
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and "database schema is not empty" in e.stderr
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):
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logger.info(
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"Database schema is not empty, creating baseline migration"
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)
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ProxyExtrasDBManager._create_baseline_migration(schema_path)
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logger.info(
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"Baseline migration created, resolving all migrations"
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)
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ProxyExtrasDBManager._resolve_all_migrations(migrations_dir)
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logger.info("✅ All migrations resolved.")
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return True
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elif (
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"P3018" in e.stderr
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): # PostgreSQL error code for duplicate column
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logger.info(
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"Migration already exists, resolving specific migration"
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)
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# Extract the migration name from the error message
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migration_match = re.search(
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r"Migration name: (\d+_.*)", e.stderr
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)
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if migration_match:
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migration_name = migration_match.group(1)
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logger.info(f"Rolling back migration {migration_name}")
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ProxyExtrasDBManager._roll_back_migration(
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migration_name
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)
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logger.info(
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f"Resolving migration {migration_name} that failed due to existing columns"
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)
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ProxyExtrasDBManager._resolve_specific_migration(
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migration_name
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)
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logger.info("✅ Migration resolved.")
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else:
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# Use prisma db push with increased timeout
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subprocess.run(
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["prisma", "db", "push", "--accept-data-loss"],
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timeout=60,
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check=True,
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)
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return True
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except subprocess.TimeoutExpired:
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logger.info(f"Attempt {attempt + 1} timed out")
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time.sleep(random.randrange(5, 15))
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except subprocess.CalledProcessError as e:
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attempts_left = 3 - attempt
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retry_msg = (
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f" Retrying... ({attempts_left} attempts left)"
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if attempts_left > 0
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else ""
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)
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logger.info(f"The process failed to execute. Details: {e}.{retry_msg}")
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time.sleep(random.randrange(5, 15))
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finally:
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os.chdir(original_dir)
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pass
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return False
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