Set up feeder manifests (not merged by source yet)

src/auto_archiver/modules/csv_db/csv_db.py

@@ -0,0 +1,29 @@
+import os
+from loguru import logger
+from csv import DictWriter
+from dataclasses import asdict
+
+from auto_archiver.databases 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))