gns3-server/gns3server/db/models/images.py

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#!/usr/bin/env python
#
# Copyright (C) 2021 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sqlalchemy import Table, Column, String, ForeignKey, BigInteger
from sqlalchemy.orm import relationship
from .base import Base, BaseTable, GUID
image_template_link = Table(
"images_templates_link",
Base.metadata,
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Column("image_id", BigInteger, ForeignKey("images.image_id", ondelete="CASCADE")),
Column("template_id", GUID, ForeignKey("templates.template_id", ondelete="CASCADE"))
)
class Image(BaseTable):
__tablename__ = "images"
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image_id = Column(BigInteger, primary_key=True, autoincrement=True)
filename = Column(String, index=True)
path = Column(String, unique=True)
image_type = Column(String)
image_size = Column(BigInteger)
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checksum = Column(String, index=True)
checksum_algorithm = Column(String)
templates = relationship("Template", secondary=image_template_link, back_populates="images")