73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
from rest_framework import serializers
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from orchestra.api import router
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from orchestra.utils import running_syncdb
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from .models import Resource, ResourceData
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class ResourceSerializer(serializers.ModelSerializer):
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name = serializers.SerializerMethodField('get_name')
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class Meta:
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model = ResourceData
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fields = ('name', 'used', 'allocated')
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read_only_fields = ('used',)
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def get_name(self, instance):
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return instance.resource.name
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def get_identity(self, data):
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return data.get('name')
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# Monkey-patching section
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if not running_syncdb():
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# TODO why this is even loaded during syncdb?
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# Create nested serializers on target models
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for ct, resources in Resource.objects.group_by('content_type'):
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model = ct.model_class()
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try:
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router.insert(model, 'resources', ResourceSerializer, required=False, many=True, source='resource_set')
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except KeyError:
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continue
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def validate_resources(self, attrs, source, _resources=resources):
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""" Creates missing resources """
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posted = attrs.get(source, [])
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result = []
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resources = list(_resources)
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for data in posted:
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resource = data.resource
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if resource not in resources:
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msg = "Unknown or duplicated resource '%s'." % resource
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raise serializers.ValidationError(msg)
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resources.remove(resource)
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if not resource.ondemand and not data.allocated:
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data.allocated = resource.default_allocation
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result.append(data)
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for resource in resources:
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data = ResourceData(resource=resource)
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if not resource.ondemand:
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data.allocated = resource.default_allocation
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result.append(data)
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attrs[source] = result
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return attrs
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viewset = router.get_viewset(model)
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viewset.serializer_class.validate_resources = validate_resources
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old_metadata = viewset.metadata
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def metadata(self, request, resources=resources):
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""" Provides available resources description """
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ret = old_metadata(self, request)
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ret['available_resources'] = [
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{
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'name': resource.name,
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'ondemand': resource.ondemand,
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'default_allocation': resource.default_allocation
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} for resource in resources
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]
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return ret
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viewset.metadata = metadata
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