Synnefo

#

# Copyright (c) 2010 Greek Research and Technology Network

#

from django.conf.urls.defaults import patterns

from django.http import HttpResponse

from django.template.loader import render_to_string

from django.utils import simplejson as json

from synnefo.api.faults import ItemNotFound

from synnefo.api.util import get_user, get_request_dict, api_method

from synnefo.db.models import Flavor

urlpatterns = patterns('synnefo.api.flavors',

    (r'^(?:/|.json|.xml)?$', 'list_flavors'),

    (r'^/detail(?:.json|.xml)?$', 'list_flavors', {'detail': True}),

    (r'^/(\d+)(?:.json|.xml)?$', 'get_flavor_details'),

)

def flavor_to_dict(flavor, detail=True):

    d = {'id': flavor.id, 'name': flavor.name}

    if detail:

        d['ram'] = flavor.ram

        d['disk'] = flavor.disk

        d['cpu'] = flavor.cpu

    return d

@api_method('GET')

def list_flavors(request, detail=False):

    # Normal Response Codes: 200, 203

    # Error Response Codes: computeFault (400, 500),

    #                       serviceUnavailable (503),

    #                       unauthorized (401),

    #                       badRequest (400),

    #                       overLimit (413)

    all_flavors = Flavor.objects.all()

    flavors = [flavor_to_dict(flavor, detail) for flavor in all_flavors]

    if request.serialization == 'xml':

        data = render_to_string('list_flavors.xml', {'flavors': flavors, 'detail': detail})

    else:

        data = json.dumps({'flavors': {'values': flavors}})

    return HttpResponse(data, status=200)

@api_method('GET')

def get_flavor_details(request, flavor_id):

    # Normal Response Codes: 200, 203

    # Error Response Codes: computeFault (400, 500),

    #                       serviceUnavailable (503),

    #                       unauthorized (401),

    #                       badRequest (400),

    #                       itemNotFound (404),

    #                       overLimit (413)

    try:

        falvor_id = int(flavor_id)

        flavor = flavor_to_dict(Flavor.objects.get(id=flavor_id))

    except Flavor.DoesNotExist:

        raise ItemNotFound

    if request.serialization == 'xml':

        data = render_to_string('flavor.xml', {'flavor': flavor})

    else:

        data = json.dumps({'flavor': flavor})

    return HttpResponse(data, status=200)