2 # NEPI, a framework to manage network experiments
3 # Copyright (C) 2013 INRIA
5 # This program is free software: you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation, either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
19 # Julien Tribino <julien.tribino@inria.fr>
21 from nepi.util.logger import Logger
24 import xml.etree.ElementTree as ET
26 # inherit from BaseXmpp and XMLstream classes
27 class OMF6Parser(Logger):
29 .. class:: Class Args :
31 :param jid: Jabber Id (= Xmpp Slice + Date)
33 :param password: Jabber Password (= Xmpp Password)
38 This class is an XMPP Client with customized method
45 :param jid: Jabber Id (= Xmpp Slice + Date)
47 :param password: Jabber Password (= Xmpp Password)
52 super(OMF6Parser, self).__init__("OMF6API")
57 def init_mailbox(self):
58 self.mailbox['create'] = []
59 self.mailbox['configure'] = []
60 self.mailbox['request'] = []
61 self.mailbox['release'] = []
62 self.mailbox['inform'] = []
64 def _check_for_tag(self, root, namespaces, tag):
65 """ Check if an element markup is in the ElementTree
67 :param root: Root of the tree
68 :type root: ElementTree Element
69 :param namespaces: Namespaces of the element
71 :param tag: Tag that will search in the tree
75 for element in root.iter(namespaces+tag):
81 def _check_for_props(self, root, namespaces):
82 """ Check if an element markup is in the ElementTree
84 :param root: Root of the tree
85 :type root: ElementTree Element
86 :param namespaces: Namespaces of the element
91 for properties in root.iter(namespaces+'props'):
92 for element in properties.iter():
93 if element.tag and element.text:
94 props[element.tag] = element.text
97 def _check_for_membership(self, root, namespaces):
98 """ Check if an element markup is in the ElementTree
100 :param root: Root of the tree
101 :type root: ElementTree Element
102 :param namespaces: Namespaces of the element
103 :type namespaces: str
106 for element in root.iter(namespaces+'membership'):
107 for elt in element.iter(namespaces+'it'):
112 def _check_output(self, root, namespaces):
113 """ Check the significative element in the answer and display it
115 :param root: Root of the tree
116 :type root: ElementTree Element
117 :param namespaces: Namespaces of the tree
118 :type namespaces: str
121 fields = ["TARGET", "REASON", "PATH", "APPID", "VALUE"]
124 msg = self._check_for_tag(root, namespaces, elt)
126 response = response + " " + msg.text + " :"
127 deb = self._check_for_tag(root, namespaces, "MESSAGE")
129 msg = response + " " + deb.text
135 def _inform_creation_ok(self, root, namespaces):
137 uid = self._check_for_tag(root, namespaces, "uid")
138 cid = self._check_for_tag(root, namespaces, "cid")
139 member = self._check_for_membership(root, namespaces)
140 binary_path = self._check_for_tag(root, namespaces, "binary_path")
141 msg = "CREATION OK -- "
143 msg = msg + "The resource : '"+binary_path
145 msg = msg + "' is listening to the topics : '"+ uid
147 msg = msg + "' and '"+ member +"'"
150 self.mailbox['create'].append([cid, uid ])
152 def _inform_creation_failed(self, root, namespaces):
153 reason = self._check_for_tag(root, namespaces, "reason")
154 cid = self._check_for_tag(root, namespaces, "cid")
155 msg = "CREATION FAILED - The reason : "+reason
158 self.mailbox['create'].append([cid, uid ])
160 def _inform_status(self, root, namespaces):
161 props = self._check_for_props(root, namespaces)
163 for elt in props.keys():
164 ns, tag = elt.split('}')
166 msg = msg + "membership : " + props[elt]+" -- "
168 msg = msg + tag +" : " + props[elt]+" -- "
169 msg = msg + " STATUS "
172 def _inform_released(self, root, namespaces):
174 parent_id = self._check_for_tag(root, namespaces, "src")
175 child_id = self._check_for_tag(root, namespaces, "res_id")
176 cid = self._check_for_tag(root, namespaces, "cid")
178 msg = "RELEASED - The resource : '"+child_id+ \
179 "' has been released by : '"+ parent_id
181 self.mailbox['release'].append(cid)
183 def _inform_error(self, root, namespaces):
184 reason = self._check_for_tag(root, namespaces, "reason")
185 msg = "The reason : "+reason
188 def _inform_warn(self, root, namespaces):
189 reason = self._check_for_tag(root, namespaces, "reason")
190 msg = "The reason : "+reason
193 def _parse_inform(self, root, namespaces):
194 """ Check the significative element in the answer and display it
196 :param root: Root of the tree
197 :type root: ElementTree Element
198 :param namespaces: Namespaces of the tree
199 :type namespaces: str
202 itype = self._check_for_tag(root, namespaces, "itype")
204 method_name = '_inform_'+ itype.replace('.', '_').lower()
205 method = getattr(self, method_name)
207 method(root, namespaces)
209 msg = "There is no method to parse the response of the type " + itype
214 def check_mailbox(self, itype, attr):
215 if itype == "create":
216 for res in self.mailbox[itype]:
219 self.mailbox[itype].remove(res)
221 elif itype == "release":
222 for res in self.mailbox[itype]:
224 self.mailbox[itype].remove(res)
229 def handle(self, iq):
230 namespaces = "{http://schema.mytestbed.net/omf/6.0/protocol}"
231 for i in iq['pubsub_event']['items']:
232 root = ET.fromstring(str(i))
234 self._parse_inform(root, namespaces)