root / snf-astakos-app / astakos / im / register.py @ 9f715f94
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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 Resource, Service, Endpoint, EndpointData |
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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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resource_fields = ['desc', 'unit', 'allow_in_projects'] |
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class RegisterException(Exception): |
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pass
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def add_resource(resource_dict): |
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name = resource_dict.get('name')
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service_type = resource_dict.get('service_type')
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service_origin = resource_dict.get('service_origin')
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if not name or not service_type or not service_origin: |
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raise RegisterException("Malformed resource dict.") |
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try:
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service = Service.objects.get(name=service_origin) |
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except Service.DoesNotExist:
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m = "There is no service %s." % service_origin
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raise RegisterException(m)
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try:
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r = Resource.objects.get_for_update(name=name) |
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exists = True
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if r.service_type != service_type:
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m = ("There already exists a resource named %s with service "
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"type %s." % (name, r.service_type))
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raise RegisterException(m)
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if r.service_origin != service_origin:
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m = ("There already exists a resource named %s registered for "
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"service %s." % (name, r.service_origin))
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raise RegisterException(m)
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except Resource.DoesNotExist:
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r = Resource(name=name, |
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uplimit=0,
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service_type=service_type, |
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service_origin=service_origin) |
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exists = False
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for field in resource_fields: |
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value = resource_dict.get(field) |
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if value is not None: |
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setattr(r, field, value)
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r.save() |
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if not exists: |
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qh_sync_new_resource(r, 0)
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if exists:
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logger.info("Updated resource %s." % (name))
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else:
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logger.info("Added resource %s." % (name))
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return r, exists
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def update_resource(resource, uplimit): |
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old_uplimit = resource.uplimit |
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resource.uplimit = uplimit |
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resource.save() |
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logger.info("Updated resource %s with limit %s."
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% (resource.name, uplimit)) |
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diff = uplimit - old_uplimit |
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if diff != 0: |
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qh_add_resource_limit(resource, diff) |
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def get_resources(resources=None, services=None): |
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if resources is None: |
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rs = Resource.objects.all() |
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else:
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rs = Resource.objects.filter(name__in=resources) |
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if services is not None: |
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rs = rs.filter(service__in=services) |
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resource_dict = {} |
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for r in rs: |
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resource_dict[r.full_name()] = r.get_info() |
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return resource_dict
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def add_endpoint(service, endpoint_dict): |
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endpoint = Endpoint.objects.create(service=service) |
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for key, value in endpoint_dict.iteritems(): |
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EndpointData.objects.create( |
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endpoint=endpoint, key=key, value=value) |
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def add_service(component, name, service_type, endpoints): |
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defaults = {'component': component,
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'type': service_type,
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} |
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service, created = Service.objects.get_or_create( |
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name=name, defaults=defaults) |
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if not created: |
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if service.component != component:
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m = ("There is already a service named %s registered by %s." %
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(name, service.component.name)) |
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raise RegisterException(m)
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service.endpoints.all().delete() |
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else:
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service.component = component |
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service.type = service_type |
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service.save() |
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for endpoint in endpoints: |
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add_endpoint(service, endpoint) |
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return not created |