Add server-side support for deleting files from fileserver on task delete

apiserver/database/model/url_to_delete.py

@@ -0,0 +1,51 @@
+from enum import Enum
+
+from mongoengine import StringField, DateTimeField, IntField, EnumField
+
+from apiserver.database import Database, strict
+from apiserver.database.model import AttributedDocument
+
+
+class StorageType(str, Enum):
+    fileserver = "fileserver"
+    unknown = "unknown"
+
+
+class FileType(str, Enum):
+    file = "file"
+    folder = "folder"
+
+
+class DeletionStatus(str, Enum):
+    created = "created"
+    retrying = "retrying"
+    failed = "failed"
+
+
+class UrlToDelete(AttributedDocument):
+    _field_collation_overrides = {
+        "url": AttributedDocument._numeric_locale,
+    }
+
+    meta = {
+        "db_alias": Database.backend,
+        "strict": strict,
+        "indexes": [
+            ("company", "user", "task"),
+            "storage_type",
+            "created",
+            "retry_count",
+            "type",
+        ],
+    }
+
+    id = StringField(primary_key=True)
+    url = StringField(required=True, unique_with="company")
+    task = StringField(required=True)
+    created = DateTimeField(required=True)
+    storage_type = EnumField(StorageType, default=StorageType.unknown)
+    type = EnumField(FileType, default=FileType.file)
+    retry_count = IntField(default=0)
+    last_failure_time = DateTimeField()
+    last_failure_reason = StringField()
+    status = EnumField(DeletionStatus, default=DeletionStatus.created)