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# Copyright 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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#   1. Redistributions of source code must retain the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer.
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#
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#   2. Redistributions in binary form must reproduce the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer in the documentation and/or other materials
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#      provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from astakos.im.models import Service, Resource
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from astakos.im.functions import qh_sync_all_users
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from astakos.im.quotas import qh_add_resource_limit, qh_sync_new_resource
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import logging
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logger = logging.getLogger(__name__)
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def add_resource(service, resource, uplimit):
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    try:
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        s = Service.objects.get(name=service)
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    except Service.DoesNotExist:
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        raise Exception("Service %s is not registered." % (service))
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    name = resource['name']
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    try:
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        r = Resource.objects.get_for_update(name=name)
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        old_uplimit = r.uplimit
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    except Resource.DoesNotExist:
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        r = Resource()
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        old_uplimit = None
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    r.uplimit = uplimit
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    r.service = service
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    for key, value in resource.iteritems():
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        setattr(r, key, value)
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    r.save()
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    if old_uplimit is not None:
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        logger.info("Updated resource %s with limit %s." % (name, uplimit))
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    else:
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        logger.info("Added resource %s with limit %s." % (name, uplimit))
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    if old_uplimit is not None:
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        diff = uplimit - old_uplimit
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        if diff != 0:
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            qh_add_resource_limit(name, diff)
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    else:
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        qh_sync_new_resource(name, uplimit)