Thomas Peetz
85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
"""
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import data from json file to MariaDB
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"""
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from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter
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from typing import Any, AnyStr, Dict, List
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import os
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import json
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from pathlib import Path
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from sqlalchemy import create_engine
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from sqlalchemy.orm import sessionmaker, Session
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from db.models.base import Base
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from db.models import registry
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from config import get_logger
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parser = ArgumentParser(formatter_class=ArgumentDefaultsHelpFormatter)
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parser.add_argument('--verbose', '-v', action='count', default=0)
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parser.add_argument('--dry-run', '-m', action='store_true')
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parser.add_argument('--cleanup', '-c', action='store_true')
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parser.add_argument('--file', '-f', default='~/data.json')
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args = parser.parse_args()
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DB_USER: str = os.getenv("DB_USER", "kontor")
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DB_PASSWORD: str = os.getenv("DB_PASSWORD", "kontor")
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DB_SERVER: str = os.getenv("DB_SERVER", "127.0.0.1")
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DB_PORT: int = int(os.getenv("DB_PORT", 5432))
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DB_DBNAME: str = os.getenv("DB_DBNAME", "kontor")
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DATABASE_URL: str = f"postgresql://{DB_USER}:{DB_PASSWORD}@{DB_SERVER}:{DB_PORT}/{DB_DBNAME}"
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def cleanup_database(db: Session, log, dry_run: bool):
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log.info("cleanup_database")
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# get tables from registry
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for table in registry:
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log.info(f"{table}")
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model = registry[table]
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entries = db.query(model).all()
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for entry in entries:
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if not dry_run:
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db.delete(entry)
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db.commit()
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def load_data(filename: str, log) -> Dict[AnyStr, Dict[AnyStr, Any]]:
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log.info("load_data")
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import_file = Path(filename)
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if not import_file.exists():
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log.info(f"File {filename} does not exist. Do nothing.")
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raise FileNotFoundError()
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log.info("read json file")
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with open(filename, 'r') as json_file:
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json_load = json.load(json_file)
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return json_load
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def get_ids(items: List[Any]) -> List[AnyStr]:
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result: List[AnyStr] = []
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for item in items:
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result.append(item.id)
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return result
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if __name__ == '__main__':
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logger = get_logger(args.verbose, "kontor")
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logger.info('kontor.import started')
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engine = create_engine(DATABASE_URL)
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Base.metadata.create_all(bind=engine, checkfirst=True)
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SessionLocal = sessionmaker(bind=engine)
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with SessionLocal() as db:
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if args.cleanup:
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cleanup_database(db, logger, args.dry_run)
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data = load_data(args.file, logger)
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for tablename in data:
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model = registry[tablename]
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existing_items = db.query(model).all()
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existing_ids = get_ids(existing_items)
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logger.debug(f"found {len(existing_items)} for table {tablename}")
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import_items = data[tablename]
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for import_item in import_items:
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if import_item['id'] in existing_ids:
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logger.info(f"update {import_item['id']}")
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else:
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logger.info(f"import {import_item['id']}")
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logger.info('kontor.import finished')
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