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| """Module for checking differences between Prisma schema and database.""" | |
| import os | |
| import subprocess | |
| from typing import List, Optional, Tuple | |
| from litellm._logging import verbose_logger | |
| def extract_sql_commands(diff_output: str) -> List[str]: | |
| """ | |
| Extract SQL commands from the Prisma migrate diff output. | |
| Args: | |
| diff_output (str): The full output from prisma migrate diff. | |
| Returns: | |
| List[str]: A list of SQL commands extracted from the diff output. | |
| """ | |
| # Split the output into lines and remove empty lines | |
| lines = [line.strip() for line in diff_output.split("\n") if line.strip()] | |
| sql_commands = [] | |
| current_command = "" | |
| in_sql_block = False | |
| for line in lines: | |
| if line.startswith("-- "): # Comment line, likely a table operation description | |
| if in_sql_block and current_command: | |
| sql_commands.append(current_command.strip()) | |
| current_command = "" | |
| in_sql_block = True | |
| elif in_sql_block: | |
| if line.endswith(";"): | |
| current_command += line | |
| sql_commands.append(current_command.strip()) | |
| current_command = "" | |
| in_sql_block = False | |
| else: | |
| current_command += line + " " | |
| # Add any remaining command | |
| if current_command: | |
| sql_commands.append(current_command.strip()) | |
| return sql_commands | |
| def check_prisma_schema_diff_helper(db_url: str) -> Tuple[bool, List[str]]: | |
| """Checks for differences between current database and Prisma schema. | |
| Returns: | |
| A tuple containing: | |
| - A boolean indicating if differences were found (True) or not (False). | |
| - A string with the diff output or error message. | |
| Raises: | |
| subprocess.CalledProcessError: If the Prisma command fails. | |
| Exception: For any other errors during execution. | |
| """ | |
| verbose_logger.debug("Checking for Prisma schema diff...") # noqa: T201 | |
| try: | |
| result = subprocess.run( | |
| [ | |
| "prisma", | |
| "migrate", | |
| "diff", | |
| "--from-url", | |
| db_url, | |
| "--to-schema-datamodel", | |
| "./schema.prisma", | |
| "--script", | |
| ], | |
| capture_output=True, | |
| text=True, | |
| check=True, | |
| ) | |
| # return True, "Migration diff generated successfully." | |
| sql_commands = extract_sql_commands(result.stdout) | |
| if sql_commands: | |
| print("Changes to DB Schema detected") # noqa: T201 | |
| print("Required SQL commands:") # noqa: T201 | |
| for command in sql_commands: | |
| print(command) # noqa: T201 | |
| return True, sql_commands | |
| else: | |
| return False, [] | |
| except subprocess.CalledProcessError as e: | |
| error_message = f"Failed to generate migration diff. Error: {e.stderr}" | |
| print(error_message) # noqa: T201 | |
| return False, [] | |
| def check_prisma_schema_diff(db_url: Optional[str] = None) -> None: | |
| """Main function to run the Prisma schema diff check.""" | |
| if db_url is None: | |
| db_url = os.getenv("DATABASE_URL") | |
| if db_url is None: | |
| raise Exception("DATABASE_URL not set") | |
| has_diff, message = check_prisma_schema_diff_helper(db_url) | |
| if has_diff: | |
| verbose_logger.exception( | |
| "🚨🚨🚨 prisma schema out of sync with db. Consider running these sql_commands to sync the two - {}".format( | |
| message | |
| ) | |
| ) | |