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

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#!/usr/bin/env python
#
# Copyright (C) 2023 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/>.
from sqlalchemy import Table, Column, String, ForeignKey
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from sqlalchemy.orm import relationship
from .base import Base, BaseTable, generate_uuid, GUID
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import logging
log = logging.getLogger(__name__)
resource_pool_map = Table(
"resource_pool_map",
Base.metadata,
Column("resource_id", GUID, ForeignKey("resources.resource_id", ondelete="CASCADE")),
Column("resource_pool_id", GUID, ForeignKey("resource_pools.resource_pool_id", ondelete="CASCADE"))
)
class Resource(BaseTable):
__tablename__ = "resources"
resource_id = Column(GUID, primary_key=True)
name = Column(String, unique=True, index=True)
resource_type = Column(String)
resource_pools = relationship("ResourcePool", secondary=resource_pool_map, back_populates="resources")
class ResourcePool(BaseTable):
__tablename__ = "resource_pools"
resource_pool_id = Column(GUID, primary_key=True, default=generate_uuid)
name = Column(String, unique=True, index=True)
resources = relationship("Resource", secondary=resource_pool_map, back_populates="resource_pools")