Tools/QueueStatusServer/model/attachmentdata.py

# Copyright (C) 2018 Apple Inc. All rights reserved.
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from google.appengine.ext import db


class AttachmentData(db.Model):
    attachment_id = db.IntegerProperty()
    metadata = db.BlobProperty()
    data = db.BlobProperty()

    @classmethod
    def add_attachment_data(cls, attachment_id, metadata, data):
        cls.get_or_insert(str(attachment_id), attachment_id=attachment_id, metadata=db.Blob(metadata), data=db.Blob(data))

    @classmethod
    def lookup_if_exists(cls, attachment_id):
        return cls.get_by_key_name(str(attachment_id))

    @classmethod
    def remove_attachment_data(cls, attachment_id):
        attachment_data = cls.lookup_if_exists(attachment_id)
        if attachment_data:
            attachment_data.delete()