blazar/climate/db/sqlalchemy/models.py
2014-01-23 17:21:04 +00:00

185 lines
6.1 KiB
Python

# Copyright (c) 2013 Mirantis Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sqlalchemy as sa
from sqlalchemy.dialects.mysql import MEDIUMTEXT
from sqlalchemy.orm import relationship
from climate.db.sqlalchemy import model_base as mb
from climate.openstack.common import uuidutils
## Helpers
def _generate_unicode_uuid():
return unicode(uuidutils.generate_uuid())
def MediumText():
return sa.Text().with_variant(MEDIUMTEXT(), 'mysql')
def _id_column():
return sa.Column(sa.String(36),
primary_key=True,
default=_generate_unicode_uuid)
## Main objects: Lease, Reservation, Event
class Lease(mb.ClimateBase):
"""Contains all info about lease."""
__tablename__ = 'leases'
__table_args__ = (
sa.UniqueConstraint('name'),
)
id = _id_column()
name = sa.Column(sa.String(80), nullable=False)
user_id = sa.Column(sa.String(255), nullable=True)
tenant_id = sa.Column(sa.String(255), nullable=True)
start_date = sa.Column(sa.DateTime, nullable=False)
end_date = sa.Column(sa.DateTime, nullable=False)
trust_id = sa.Column(sa.String(36))
reservations = relationship('Reservation', cascade="all,delete",
backref='lease', lazy='joined')
events = relationship('Event', cascade="all,delete",
backref='lease', lazy='joined')
def to_dict(self):
d = super(Lease, self).to_dict()
d['reservations'] = [r.to_dict() for r in self.reservations]
d['events'] = [e.to_dict() for e in self.events]
return d
class Reservation(mb.ClimateBase):
"""Specifies group of nodes within a cluster."""
__tablename__ = 'reservations'
id = _id_column()
lease_id = sa.Column(sa.String(36),
sa.ForeignKey('leases.id'),
nullable=False)
resource_id = sa.Column(sa.String(36))
resource_type = sa.Column(sa.String(66))
status = sa.Column(sa.String(13))
computehost_reservations = relationship('ComputeHostReservation',
uselist=False,
cascade="all,delete",
backref='reservation',
lazy='joined')
computehost_allocations = relationship('ComputeHostAllocation',
uselist=False,
cascade="all,delete",
backref='reservation',
lazy='joined')
def to_dict(self):
return super(Reservation, self).to_dict()
class Event(mb.ClimateBase):
"""An events occurring with the lease."""
__tablename__ = 'events'
id = _id_column()
lease_id = sa.Column(sa.String(36), sa.ForeignKey('leases.id'))
event_type = sa.Column(sa.String(66))
time = sa.Column(sa.DateTime)
status = sa.Column(sa.String(13))
def to_dict(self):
return super(Event, self).to_dict()
class ComputeHostReservation(mb.ClimateBase):
"""Specifies resources asked by reservation from
Compute Host Reservation API.
"""
__tablename__ = 'computehost_reservations'
id = _id_column()
reservation_id = sa.Column(sa.String(36), sa.ForeignKey('reservations.id'))
resource_properties = sa.Column(MediumText())
count_range = sa.Column(sa.String(36))
hypervisor_properties = sa.Column(MediumText())
status = sa.Column(sa.String(13))
def to_dict(self):
return super(ComputeHostReservation, self).to_dict()
class ComputeHostAllocation(mb.ClimateBase):
"""Mapping between ComputeHost, ComputeHostReservation and Reservation.
"""
__tablename__ = 'computehost_allocations'
id = _id_column()
compute_host_id = sa.Column(sa.String(36),
sa.ForeignKey('computehosts.id'))
reservation_id = sa.Column(sa.String(36),
sa.ForeignKey('reservations.id'))
def to_dict(self):
return super(ComputeHostAllocation, self).to_dict()
class ComputeHost(mb.ClimateBase):
"""Specifies resources asked by reservation from
Compute Host Reservation API.
"""
__tablename__ = 'computehosts'
id = _id_column()
vcpus = sa.Column(sa.Integer, nullable=False)
cpu_info = sa.Column(MediumText(), nullable=False)
hypervisor_type = sa.Column(MediumText(), nullable=False)
hypervisor_version = sa.Column(sa.Integer, nullable=False)
hypervisor_hostname = sa.Column(sa.String(255), nullable=True)
memory_mb = sa.Column(sa.Integer, nullable=False)
local_gb = sa.Column(sa.Integer, nullable=False)
status = sa.Column(sa.String(13))
computehost_extra_capabilities = relationship('ComputeHostExtraCapability',
cascade="all,delete",
backref='computehost',
lazy='joined')
def to_dict(self):
return super(ComputeHost, self).to_dict()
class ComputeHostExtraCapability(mb.ClimateBase):
"""Allows to define extra capabilities per administrator request for each
Compute Host added.
"""
__tablename__ = 'computehost_extra_capabilities'
id = _id_column()
computehost_id = sa.Column(sa.String(36), sa.ForeignKey('computehosts.id'))
capability_name = sa.Column(sa.String(64), nullable=False)
capability_value = sa.Column(MediumText(), nullable=False)
def to_dict(self):
return super(ComputeHostExtraCapability, self).to_dict()