Synnefo

# Copyright 2011 GRNET S.A. All rights reserved.

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from logging import getLogger

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 import util

from synnefo.db.models import Flavor

log = getLogger('synnefo.api')

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

        d['SNF:disk_template'] = flavor.disk_template

    return d

@util.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)

    log.debug('list_flavors detail=%s', detail)

    active_flavors = Flavor.objects.exclude(deleted=True)

    flavors = [flavor_to_dict(flavor, detail)\

               for flavor in active_flavors.order_by('id')]

    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)

@util.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)

    log.debug('get_flavor_details %s', flavor_id)

    flavor = util.get_flavor(flavor_id, include_deleted=True)

    flavordict = flavor_to_dict(flavor, detail=True)

    if request.serialization == 'xml':

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

    else:

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

    return HttpResponse(data, status=200)