root / snfOCCI / APIserver.py @ fe35958e
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#!/usr/bin/env python
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import sys |
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from optparse import OptionParser, OptionValueError |
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import string |
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import sqlite3 |
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import eventlet |
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from eventlet import wsgi |
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import os |
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import json |
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import uuid |
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from snfOCCI.registry import snfRegistry |
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from snfOCCI.compute import ComputeBackend |
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from snfOCCI.config import SERVER_CONFIG, KAMAKI_CONFIG, VOMS_CONFIG |
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import snf_voms |
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from snfOCCI.network import NetworkBackend, IpNetworkBackend, IpNetworkInterfaceBackend, NetworkInterfaceBackend |
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from kamaki.clients.compute import ComputeClient |
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from kamaki.clients.cyclades import CycladesClient |
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from kamaki.clients import astakos |
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from kamaki.clients import ClientError |
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from kamaki.cli import config as kamaki_config |
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from occi.core_model import Mixin, Resource |
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from occi.backend import MixinBackend |
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from occi.extensions.infrastructure import COMPUTE, START, STOP, SUSPEND, RESTART, RESOURCE_TEMPLATE, OS_TEMPLATE, NETWORK, IPNETWORK, NETWORKINTERFACE,IPNETWORKINTERFACE |
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from occi import wsgi |
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from occi.exceptions import HTTPError |
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from occi import core_model |
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from wsgiref.simple_server import make_server |
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from wsgiref.validate import validator |
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from webob import Request |
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from pprint import pprint |
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class MyAPP(wsgi.Application): |
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'''
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An OCCI WSGI application.
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'''
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def __init__(self): |
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"""
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Initialization of the WSGI OCCI application for synnefo
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"""
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global ENABLE_VOMS, VOMS_DB
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ENABLE_VOMS = VOMS_CONFIG['enable_voms']
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super(MyAPP,self).__init__(registry=snfRegistry()) |
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self._register_backends()
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VALIDATOR_APP = validator(self)
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def _register_backends(self): |
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COMPUTE_BACKEND = ComputeBackend() |
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NETWORK_BACKEND = NetworkBackend() |
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NETWORKINTERFACE_BACKEND = NetworkInterfaceBackend() |
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IPNETWORK_BACKEND = IpNetworkBackend() |
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IPNETWORKINTERFACE_BACKEND = IpNetworkInterfaceBackend() |
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self.register_backend(COMPUTE, COMPUTE_BACKEND)
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self.register_backend(START, COMPUTE_BACKEND)
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self.register_backend(STOP, COMPUTE_BACKEND)
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self.register_backend(RESTART, COMPUTE_BACKEND)
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self.register_backend(SUSPEND, COMPUTE_BACKEND)
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self.register_backend(RESOURCE_TEMPLATE, MixinBackend())
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self.register_backend(OS_TEMPLATE, MixinBackend())
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# Network related backends
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self.register_backend(NETWORK, NETWORK_BACKEND)
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self.register_backend(IPNETWORK, IPNETWORK_BACKEND)
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self.register_backend(NETWORKINTERFACE,NETWORKINTERFACE_BACKEND)
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self.register_backend(IPNETWORKINTERFACE, IPNETWORKINTERFACE_BACKEND)
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def refresh_images(self, snf, client): |
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try:
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images = snf.list_images() |
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for image in images: |
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IMAGE_ATTRIBUTES = {'occi.core.id': str(image['id'])} |
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IMAGE = Mixin("http://schemas.ogf.org/occi/os_tpl#", occify_terms(str(image['name'])), [OS_TEMPLATE],title='IMAGE' ,attributes = IMAGE_ATTRIBUTES) |
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self.register_backend(IMAGE, MixinBackend())
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except:
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raise HTTPError(404, "Unauthorized access") |
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def refresh_flavors(self, snf, client): |
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flavors = snf.list_flavors() |
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for flavor in flavors: |
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details = snf.get_flavor_details(flavor['id'])
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FLAVOR_ATTRIBUTES = {'occi.core.id': flavor['id'], |
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'occi.compute.cores': str(details['vcpus']), |
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'occi.compute.memory': str(details['ram']), |
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'occi.storage.size': str(details['disk']), |
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} |
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FLAVOR = Mixin("http://schemas.ogf.org/occi/resource_tpl#", str(flavor['name']), [RESOURCE_TEMPLATE], attributes = FLAVOR_ATTRIBUTES) |
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self.register_backend(FLAVOR, MixinBackend())
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def refresh_flavors_norecursive(self, snf, client): |
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flavors = snf.list_flavors(True)
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print "Retrieving details for each image id" |
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for flavor in flavors: |
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FLAVOR_ATTRIBUTES = {'occi.core.id': flavor['id'], |
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'occi.compute.cores': str(flavor['vcpus']), |
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'occi.compute.memory': str(flavor['ram']), |
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'occi.storage.size': str(flavor['disk']), |
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} |
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FLAVOR = Mixin("http://schemas.ogf.org/occi/resource_tpl#", occify_terms(str(flavor['name'])), [RESOURCE_TEMPLATE], title='FLAVOR',attributes = FLAVOR_ATTRIBUTES) |
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self.register_backend(FLAVOR, MixinBackend())
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def refresh_network_instances(self,client): |
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networks =client.networks_get(command = 'detail')
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network_details = networks.json['networks']
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resources = self.registry.resources
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occi_keys = resources.keys() |
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for network in network_details: |
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if '/network/'+str(network['id']) not in occi_keys: |
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netID = '/network/'+str(network['id']) |
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snf_net = core_model.Resource(netID, |
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NETWORK, |
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[IPNETWORK]) |
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snf_net.attributes['occi.core.id'] = str(network['id']) |
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#This info comes from the network details
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snf_net.attributes['occi.network.state'] = str(network['status']) |
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snf_net.attributes['occi.network.gateway'] = str(network['gateway']) |
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if network['public'] == True: |
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snf_net.attributes['occi.network.type'] = "Public = True" |
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else:
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snf_net.attributes['occi.network.type'] = "Public = False" |
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self.registry.add_resource(netID, snf_net, None) |
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def refresh_compute_instances(self, snf, client): |
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'''Syncing registry with cyclades resources'''
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servers = snf.list_servers() |
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snf_keys = [] |
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for server in servers: |
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snf_keys.append(str(server['id'])) |
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resources = self.registry.resources
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occi_keys = resources.keys() |
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print occi_keys
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for serverID in occi_keys: |
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if '/compute/' in serverID and resources[serverID].attributes['occi.compute.hostname'] == "": |
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self.registry.delete_resource(serverID, None) |
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occi_keys = resources.keys() |
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#Compute instances in synnefo not available in registry
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diff = [x for x in snf_keys if '/compute/'+x not in occi_keys] |
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for key in diff: |
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details = snf.get_server_details(int(key))
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flavor = snf.get_flavor_details(details['flavor']['id']) |
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try:
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print "line 65:Finished getting image details for VM "+key+" with ID" + str(details['flavor']['id']) |
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image = snf.get_image_details(details['image']['id']) |
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for i in self.registry.backends: |
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if i.term == occify_terms(str(image['name'])): |
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rel_image = i |
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if i.term == occify_terms(str(flavor['name'])): |
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rel_flavor = i |
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resource = Resource(key, COMPUTE, [rel_flavor, rel_image]) |
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resource.actions = [START] |
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resource.attributes['occi.core.id'] = key
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resource.attributes['occi.compute.state'] = 'inactive' |
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resource.attributes['occi.compute.architecture'] = SERVER_CONFIG['compute_arch'] |
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resource.attributes['occi.compute.cores'] = str(flavor['vcpus']) |
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resource.attributes['occi.compute.memory'] = str(flavor['ram']) |
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resource.attributes['occi.core.title'] = str(details['name']) |
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networkIDs = details['addresses'].keys()
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if len(networkIDs)>0: |
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resource.attributes['occi.compute.hostname'] = str(details['addresses'][networkIDs[0]][0]['addr']) |
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else:
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resource.attributes['occi.compute.hostname'] = "" |
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self.registry.add_resource(key, resource, None) |
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for netKey in networkIDs: |
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link_id = str(uuid.uuid4())
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NET_LINK = core_model.Link("http://schemas.ogf.org/occi/infrastructure#networkinterface" + link_id,
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NETWORKINTERFACE, |
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[IPNETWORKINTERFACE], resource, |
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self.registry.resources['/network/'+str(netKey)]) |
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for version in details['addresses'][netKey]: |
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if version['version']==4: |
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ip4address = str(version['addr']) |
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allocheme = str(version['OS-EXT-IPS:type']) |
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elif version['version']==6: |
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ip6address = str(version['addr']) |
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if 'attachments' in details.keys(): |
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for item in details['attachments']: |
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NET_LINK.attributes ={'occi.core.id':link_id,
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'occi.networkinterface.allocation' : allocheme,
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'occi.networking.interface': str(item['id']), |
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'occi.networkinterface.mac' : str(item['mac_address']), |
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'occi.networkinterface.address' : ip4address,
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'occi.networkinterface.ip6' : ip6address
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} |
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elif len(details['addresses'][netKey])>0: |
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NET_LINK.attributes ={'occi.core.id':link_id,
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'occi.networkinterface.allocation' : allocheme,
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'occi.networking.interface': '', |
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'occi.networkinterface.mac' : '', |
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'occi.networkinterface.address' : ip4address,
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'occi.networkinterface.ip6' : ip6address
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} |
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else:
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NET_LINK.attributes ={'occi.core.id':link_id,
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'occi.networkinterface.allocation' : '', |
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'occi.networking.interface': '', |
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'occi.networkinterface.mac' : '', |
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'occi.networkinterface.address' :'', |
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'occi.networkinterface.ip6' : '' } |
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resource.links.append(NET_LINK) |
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self.registry.add_resource(link_id, NET_LINK, None) |
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except ClientError as ce: |
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if ce.status == 404: |
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print('Image not found (probably older version')
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continue
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else:
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raise ce
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#Compute instances in registry not available in synnefo
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diff = [x for x in occi_keys if x[9:] not in snf_keys] |
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for key in diff: |
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if '/network/' not in key: |
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self.registry.delete_resource(key, None) |
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def __call__(self, environ, response): |
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# Enable VOMS Authorization
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print "snf-occi application has been called!" |
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req = Request(environ) |
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auth_endpoint = 'snf-auth uri=\'https://'+SERVER_CONFIG['hostname']+':5000/main\'' |
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if not req.environ.has_key('HTTP_X_AUTH_TOKEN'): |
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print "Error: An authentication token has not been provided!" |
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status = '401 Not Authorized'
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headers = [('Content-Type', 'text/html'),('Www-Authenticate',auth_endpoint)] |
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response(status,headers) |
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return [str(response)] |
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if ENABLE_VOMS:
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if req.environ.has_key('HTTP_X_AUTH_TOKEN'): |
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environ['HTTP_AUTH_TOKEN']= req.environ['HTTP_X_AUTH_TOKEN'] |
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compClient = ComputeClient(KAMAKI_CONFIG['compute_url'], environ['HTTP_AUTH_TOKEN']) |
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cyclClient = CycladesClient(KAMAKI_CONFIG['compute_url'], environ['HTTP_AUTH_TOKEN']) |
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try:
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#Up-to-date flavors and images
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self.refresh_images(compClient,cyclClient)
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self.refresh_flavors_norecursive(compClient,cyclClient)
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self.refresh_network_instances(cyclClient)
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self.refresh_compute_instances(compClient,cyclClient)
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# token will be represented in self.extras
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return self._call_occi(environ, response, security = None, token = environ['HTTP_AUTH_TOKEN'], snf = compClient, client = cyclClient) |
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except HTTPError:
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print "Exception from unauthorized access!" |
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status = '401 Not Authorized'
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headers = [('Content-Type', 'text/html'),('Www-Authenticate',auth_endpoint)] |
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response(status,headers) |
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return [str(response)] |
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else:
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#raise HTTPError(404, "Unauthorized access")
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status = '401 Not Authorized'
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headers = [('Content-Type', 'text/html'),('Www-Authenticate',auth_endpoint)] |
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response(status,headers) |
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return [str(response)] |
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else:
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compClient = ComputeClient(KAMAKI_CONFIG['compute_url'], environ['HTTP_AUTH_TOKEN']) |
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cyclClient = CycladesClient(KAMAKI_CONFIG['compute_url'], environ['HTTP_AUTH_TOKEN']) |
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#Up-to-date flavors and images
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self.refresh_images(compClient,cyclClient)
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self.refresh_flavors_norecursive(compClient,cyclClient)
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self.refresh_network_instances(cyclClient)
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self.refresh_compute_instances(compClient,cyclClient)
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# token will be represented in self.extras
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return self._call_occi(environ, response, security = None, token = environ['HTTP_AUTH_TOKEN'], snf = compClient, client = cyclClient) |
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def application(env, start_response): |
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print "snf-occi will execute voms authentication" |
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t =snf_voms.VomsAuthN() |
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(user_dn, user_vo, user_fqans) = t.process_request(env) |
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print (user_dn, user_vo, user_fqans)
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env['HTTP_AUTH_TOKEN'] = get_user_token(user_dn)
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# Get user authentication details
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astakosClient = astakos.AstakosClient(KAMAKI_CONFIG['astakos_url'], env['HTTP_AUTH_TOKEN']) |
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user_details = astakosClient.authenticate() |
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response = {'access': {'token':{'issued_at':'','expires': user_details['access']['token']['expires'] , 'id':env['HTTP_AUTH_TOKEN']}, |
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'serviceCatalog': [],
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'user':{'username': user_dn,'roles_links':user_details['access']['user']['roles_links'],'id': user_details['access']['user']['id'], 'roles':[], 'name':user_dn }, |
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'metadata': {'is_admin': 0, 'roles': user_details['access']['user']['roles']}}} |
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status = '200 OK'
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headers = [('Content-Type', 'application/json')] |
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start_response(status,headers) |
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body = json.dumps(response) |
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print body
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return [body]
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def app_factory(global_config, **local_config): |
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"""This function wraps our simple WSGI app so it
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can be used with paste.deploy"""
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return application
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def tenant_application(env, start_response): |
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print "snf-occi will return tenant information" |
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if env.has_key('SSL_CLIENT_S_DN_ENV'): |
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print env['SSL_CLIENT_S_DN_ENV'], env['SSL_CLIENT_CERT_ENV'] |
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req = Request(env) |
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if req.environ.has_key('HTTP_X_AUTH_TOKEN'): |
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env['HTTP_AUTH_TOKEN']= req.environ['HTTP_X_AUTH_TOKEN'] |
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else:
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raise HTTPError(404, "Unauthorized access") |
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# Get user authentication details
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print "@ refresh_user authentication details" |
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astakosClient = astakos.AstakosClient(KAMAKI_CONFIG['astakos_url'], env['HTTP_AUTH_TOKEN']) |
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user_details = astakosClient.authenticate() |
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response = {'tenants_links': [], 'tenants':[{'description':'Instances of EGI Federated Clouds TF','enabled': True, 'id':user_details['access']['user']['id'],'name':'EGI_FCTF'}]} |
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status = '200 OK'
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headers = [('Content-Type', 'application/json')] |
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start_response(status,headers) |
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body = json.dumps(response) |
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print body
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return [body]
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def tenant_app_factory(global_config, **local_config): |
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"""This function wraps our simple WSGI app so it
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can be used with paste.deploy"""
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return tenant_application
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def occify_terms(term_name): |
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'''
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Occifies a term_name so that it is compliant with GFD 185.
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'''
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term = term_name.strip().replace(' ', '_').replace('.', '-').lower() |
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term=term.replace('(','_').replace(')','_').replace('@','_').replace('+','-_') |
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return term
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def get_user_token(user_dn): |
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config = kamaki_config.Config() |
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return config.get_cloud("default", "token") |