auto-archiver/src/auto_archiver/modules/csv_db/csv_db.py

30 wiersze
940 B
Python

import os
from loguru import logger
from csv import DictWriter
from dataclasses import asdict
from auto_archiver.base_processors import Database
from auto_archiver.core import Metadata
class CSVDb(Database):
"""
Outputs results to a CSV file
"""
name = "csv_db"
def __init__(self, config: dict) -> None:
# without this STEP.__init__ is not called
super().__init__(config)
self.assert_valid_string("csv_file")
def done(self, item: Metadata, cached: bool=False) -> None:
"""archival result ready - should be saved to DB"""
logger.success(f"DONE {item}")
is_empty = not os.path.isfile(self.csv_file) or os.path.getsize(self.csv_file) == 0
with open(self.csv_file, "a", encoding="utf-8") as outf:
writer = DictWriter(outf, fieldnames=asdict(Metadata()))
if is_empty: writer.writeheader()
writer.writerow(asdict(item))