Synnefo

# Copyright 2012, 2013 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

from datetime import datetime

from snf_django.lib.db.fields import intDecimalField

from django.db.models import (Model, BigIntegerField, CharField,

                              ForeignKey, AutoField)

from snf_django.lib.db.managers import ForUpdateManager

class Holding(Model):

    holder = CharField(max_length=4096, db_index=True)

    source = CharField(max_length=4096, null=True)

    resource = CharField(max_length=4096, null=False)

    limit = intDecimalField()

    usage_min = intDecimalField(default=0)

    usage_max = intDecimalField(default=0)

    objects = ForUpdateManager()

    class Meta:

        unique_together = (('holder', 'source', 'resource'),)

def now():

    return datetime.utcnow().strftime('%Y-%m-%dT%H:%M:%S.%f')[:24]

class Commission(Model):

    serial = AutoField(primary_key=True)

    name = CharField(max_length=4096, default="")

    clientkey = CharField(max_length=4096, null=False)

    issue_time = CharField(max_length=24)

    objects = ForUpdateManager()

class Provision(Model):

    serial = ForeignKey(Commission,

                        to_field='serial',

                        related_name='provisions')

    holder = CharField(max_length=4096, db_index=True)

    source = CharField(max_length=4096, null=True)

    resource = CharField(max_length=4096, null=False)

    quantity = intDecimalField()

    objects = ForUpdateManager()

    def todict(self):

        return {'holder':   self.holder,

                'source':   self.source,

                'resource': self.resource,

                'quantity': self.quantity,

                }

    def holding_key(self):

        return (self.holder, self.source, self.resource)

class ProvisionLog(Model):

    serial = BigIntegerField()

    name = CharField(max_length=4096)

    issue_time = CharField(max_length=4096)

    log_time = CharField(max_length=4096)

    holder = CharField(max_length=4096)

    source = CharField(max_length=4096, null=True)

    resource = CharField(max_length=4096)

    limit = intDecimalField()

    usage_min = intDecimalField()

    usage_max = intDecimalField()

    delta_quantity = intDecimalField()

    reason = CharField(max_length=4096)

    objects = ForUpdateManager()