2 # Baris Metin <tmetin@sophia.inria.fr>
7 from twisted.words.xish import domish
8 from twisted.web import xmlrpc, server
9 from twisted.internet import reactor, task
10 from twisted.words.protocols.jabber import xmlstream, client, jid
12 sys.path.append("/usr/share/plc_api/")
13 from PLC.Config import Config
16 class BaseClient(object):
17 """ Base XMPP client: handles authentication and basic presence/message requests. """
18 def __init__(self, id, secret, verbose = False, log = None):
20 if isinstance(id, (str, unicode)):
22 x = client.XMPPClientFactory(id, secret)
23 x.addBootstrap(xmlstream.STREAM_CONNECTED_EVENT, self.event_connected)
24 x.addBootstrap(xmlstream.STREAM_END_EVENT, self.event_disconnected)
25 x.addBootstrap(xmlstream.INIT_FAILED_EVENT, self.event_init_failed)
26 x.addBootstrap(xmlstream.STREAM_AUTHD_EVENT, self.event_authenticated)
29 self.verbose = verbose
30 self.log = log or sys.stdout
32 def __rawDataIN(self, buf):
33 if self.verbose: self.msg("RECV: %s" % buf)
35 def __rawDataOUT(self, buf):
36 if self.verbose: self.msg("SEND: %s" % buf)
39 self.log.write("%s\n" % msg)
43 self.msg("ERROR: %s" % msg)
46 self.msg("WARN: %s" % msg)
49 self.msg("INFO: %s" % msg)
51 def event_connected(self, xs):
53 xs.rawDataInFn = self.__rawDataIN
54 xs.rawDataOutFn = self.__rawDataOUT
57 def event_disconnected(self, xs):
60 def event_init_failed(self, xs):
61 self.error("Init Failed")
63 def event_authenticated(self, xs):
64 presence = domish.Element(("jabber:client", "presence"))
65 presence.addElement("show", content="dnd")
66 presence.addElement("status", content="man at work")
69 # add protocol handlers
70 xs.addObserver("/presence[@type='subscribe']", self.presence_subscribe)
71 xs.addObserver("/presence[@type='unsubscribe']", self.presence_unsubscribe)
72 xs.addObserver("/precence", self.presence)
73 xs.addObserver("/message[@type='chat']", self.message_chat)
75 def presence_subscribe(self, m):
76 self.info("%s request to add us, granting." % m['from'])
77 p = domish.Element(("jabber:client", "presence"))
78 p['from'], p['to'] = m['to'], m['from']
79 p['type'] = "subscribed"
80 self.xmlstream.send(p)
82 def presence_unsubscribe(self, m):
84 self.info("%s removed us, trying to re-authenticate." % m['from'])
85 p = domish.Element(("jabber:client", "presence"))
86 p['from'], p['to'] = m['to'], m['from']
87 p['type'] = "subscribe"
88 self.xmlstream.send(p)
90 def presence(self, m):
91 p = domish.Element(("jabber:client", "presence"))
92 p['from'], p['to'] = m['to'], m['from']
93 presence.addElement("show", content="dnd")
94 presence.addElement("status", content="man at work")
95 self.xmlstream.send(p)
97 def message_chat(self, m):
98 n = domish.Element((None, "message"))
100 n['from'] = self.id.full()
101 n.addElement("body", content = "don't have time to chat. working!")
102 self.xmlstream.send(n)
105 class PubSubClient(BaseClient):
106 """ PubSub (XEP 0060) implementation """
108 def __init__(self, id, secret, verbose = False, log = None):
109 BaseClient.__init__(self, id, secret, verbose = verbose, log = log)
112 def add_result_hook(self, hook_to, hook):
113 self.hooks[hook_to] = hook
115 def delete_result_hook(self, hook_to):
116 if self.hooks.has_key(hook_to):
117 del self.hooks[hook_to]
119 def event_authenticated(self, xs):
120 BaseClient.event_authenticated(self, xs)
122 xs.addObserver("/iq/pubsub/create", self.result_create_node)
123 xs.addObserver("/iq/pubsub/delete", self.result_delete_node)
124 xs.addObserver("/iq/query[@xmlns='http://jabber.org/protocol/disco#items']", self.result_discover)
125 xs.addObserver("/iq/pubsub/subscription[@subscription='subscribed']", self.result_subscribe_to_node)
127 def __iq(self, t="get"):
128 iq = domish.Element((None, "iq"))
129 iq['from'] = self.id.full()
130 iq['to'] = "pubsub.vplc27.inria.fr"
135 def __add_pubsub(self, iq):
136 pubsub = iq.addElement("pubsub")
137 pubsub['xmlns'] = "http://jabber.org/protocol/pubsub"
140 def discover(self, node = None):
141 iq = self.__iq("get")
142 query = iq.addElement("query")
143 query['xmlns'] = "http://jabber.org/protocol/disco#items"
146 self.requests[iq['id']] = node
147 self.xmlstream.send(iq)
149 def result_discover(self, iq):
150 if self.verbose: self.info("Items for node: %s" % self.requests[iq['id']])
152 hook = self.hooks.get('discover', None)
155 self.delete_result_hook('discover')
158 for i in iq.query.elements():
161 self.requests.pop(iq['id'])
163 def subscribe_to_node(self, node):
164 iq = self.__iq("set")
165 pubsub = self.__add_pubsub(iq)
166 subscribe = pubsub.addElement("subscribe")
167 subscribe['node'] = node
168 subscribe['jid'] = self.id.full()
169 self.requests[iq['id']] = node
170 self.xmlstream.send(iq)
172 def result_subscribe_to_node(self, iq):
173 self.requests.pop(iq['id'])
175 def publish_to_node(self, node, payload):
176 iq = self.__iq("set")
177 pubsub = self.__add_pubsub(iq)
178 publish = pubsub.addElement("publish")
179 publish['node'] = node
180 items = publish.addElement("item", content=payload)
181 self.requests[iq['id']] = node
182 self.xmlstream.send(iq)
184 def result_publish_to_node(self, iq):
187 def create_node(self, node = None):
188 iq = self.__iq("set")
189 pubsub = self.__add_pubsub(iq)
190 create = pubsub.addElement("create")
192 create['node'] = node
193 configure = pubsub.addElement("configure")
194 self.requests[iq['id']] = node
195 self.xmlstream.send(iq)
197 def result_create_node(self, iq):
198 node = self.requests[iq['id']]
200 if iq.error.conflict:
201 # node is already there, nothing important.
202 self.warn("NodeID exists: %s" % node)
206 err_type = iq.error['type']
207 self.error("Can not create node: %s (error type: %s)" % (node, err_type))
210 # try subscribing to the node for debugging purposes
211 self.subscribe_to_node(node)
213 self.requests.pop(iq['id'])
216 def delete_node(self, node):
217 iq = self.__iq("set")
218 pubsub = self.__add_pubsub(iq)
219 delete = pubsub.addElement("delete")
220 delete['node'] = node
221 self.requests[iq['id']] = node
222 self.xmlstream.send(iq)
224 def result_delete_node(self, iq):
225 self.requests.pop(iq['id'])
227 def message_chat(self, m):
229 for e in m.elements():
235 # node = m.event.items['node']
236 # n = domish.Element((None, "message"))
237 # n.addElement("body", content = "published to: %s\n%s" % (node, m.event.items.toXml()))
238 # # for each listener in promiscuous mode send the published event
239 # self.xmlstream.send(n)
242 # # not a pubsub message continue on
245 if body == "list groups":
248 for i in iq.query.elements():
249 reply += "%s\n" % i['node']
250 n = domish.Element((None, "message"))
252 n['from'] = self.id.full()
253 n.addElement("body", content = reply)
254 self.xmlstream.send(n)
256 self.add_result_hook("discover", list_groups)
260 BaseClient.message_chat(self, m)
263 class Slicemgr(xmlrpc.XMLRPC, PubSubClient):
266 RESOURCES = 'resources'
268 def __init__(self, id, secret, verbose = False, log = None):
269 xmlrpc.XMLRPC.__init__(self, allowNone=True)
270 PubSubClient.__init__(self, id, secret, verbose = verbose, log = log)
271 self.command_queue = Queue.Queue()
273 xmlrpc.addIntrospection(self)
275 def xmlrpc_createSlice(self, slice):
276 self.create_slice(slice)
278 def xmlrpc_addResource(self, slice, resource):
279 self.add_resource(slice, resource)
281 def xmlrpc_deleteSlice(self, slice):
282 self.delete_slice(slice)
284 def xmlrpc_removeResource(self, slice, resource):
285 self.delete_resource(slice, resource)
288 def flush_commands(self):
289 # self.info("Running %d commands" % self.command_queue.qsize())
290 while not self.command_queue.empty():
291 (meth, param) = self.command_queue.get()
294 def create_slice(self, slice):
295 self.command_queue.put(( self.create_node, "/".join([self.DOMAIN,slice]) ))
296 self.command_queue.put(( self.create_node, "/".join([self.DOMAIN,slice,self.RESOURCES]) ))
298 def add_resource(self, slice, resource):
299 self.command_queue.put(( self.create_node, "/".join([self.DOMAIN,slice,self.RESOURCES,resource]) ))
301 def delete_slice(self, slice):
302 slice_prefix = "/".join([self.DOMAIN,slice])
303 resource_prefix = "/".join([self.DOMAIN,slice,self.RESOURCES])
304 def delete_slice_resources(iq):
305 for i in iq.query.elements():
307 if node.startswith(resource_prefix):
308 self.command_que.put(self.delete_node, node)
310 self.add_result_hook("discover", delete_slice_resources)
313 self.command_queue.put(( self.delete_node, resource_prefix) )
314 self.command_queue.put(( self.delete_node, slice_prefix) )
316 def delete_resource(self, slice, resource):
317 self.command_queue.put(( self.delete_node, "/".join([self.DOMAIN,slice,self.RESOURCES,resource]) ))
321 if __name__ == "__main__":
323 config = Config("/etc/planetlab/plc_config")
325 xmppserver = config.PLC_OMF_XMPP_SERVER
326 xmppuser = "@".join([config.PLC_OMF_XMPP_USER, xmppserver])
327 xmpppass = config.PLC_OMF_XMPP_PASSWORD
328 slicemgr = Slicemgr(xmppuser, xmpppass,
329 log=open("/var/log/omf/pubsub_client.log", "a"),
332 t = task.LoopingCall(slicemgr.flush_commands)
333 t.start(5.0) # check every 5 seconds
334 reactor.connectTCP(slicemgr.id.host, 5222, slicemgr.factory)
335 reactor.listenTCP(5053, server.Site(slicemgr), interface="localhost")
336 reactor.run(installSignalHandlers=True)