Synnefo

# Copyright 2011, 2012, 2013 GRNET S.A. All rights reserved.

#

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# without modification, are permitted provided that the following

# conditions are met:

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#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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from logging import getLogger

try:

    from django.conf.urls import patterns

except ImportError:  # Django==1.2

    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 snf_django.lib import api

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}

    d['links'] = util.flavor_to_links(flavor.id)

    if detail:

        d['ram'] = flavor.ram

        d['disk'] = flavor.disk

        d['vcpus'] = flavor.cpu

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

    return d

@api.api_method(http_method='GET', user_required=True, logger=log)

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': flavors})

    return HttpResponse(data, status=200)

@api.api_method(http_method='GET', user_required=True, logger=log)

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)