From: Sandrine Avakian <sandrine.avakian@inria.fr>
Date: Tue, 26 Nov 2013 14:48:43 +0000 (+0100)
Subject: Adding iotlabxrn.py
X-Git-Tag: sfa-3.1-1~13^2~1
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=4098d44db8472809e8a0289b1e82ddf317a8f8cc;hp=24343c5fd971f82d0ae5854a88bd149a4a235d46;p=sfa.git

Adding iotlabxrn.py
---

diff --git a/sfa/iotlab/iotlabxrn.py b/sfa/iotlab/iotlabxrn.py
new file mode 100644
index 00000000..5d842494
--- /dev/null
+++ b/sfa/iotlab/iotlabxrn.py
@@ -0,0 +1,106 @@
+# specialized Xrn class for Dummy TB
+import re
+from sfa.util.xrn import Xrn
+
+def xrn_to_hostname(xrn):
+    """Returns a node's hostname from its xrn.
+    :param xrn: The nodes xrn identifier.
+    :type xrn: Xrn (from sfa.util.xrn)
+
+    :returns: node's hostname.
+    :rtype: string
+
+    """
+    return Xrn.unescape(Xrn(xrn=xrn, type='node').get_leaf())
+
+
+def xrn_object(root_auth, hostname):
+    """Creates a valid xrn object from the node's hostname and the authority
+    of the SFA server.
+
+    :param hostname: the node's hostname.
+    :param root_auth: the SFA root authority.
+    :type hostname: string
+    :type root_auth: string
+
+    :returns: the iotlab node's xrn
+    :rtype: Xrn
+
+    """
+    return Xrn('.'.join([root_auth, Xrn.escape(hostname)]), type='node')
+
+# temporary helper functions to use this module instead of namespace
+def hostname_to_hrn (auth, hostname):
+    return IotlabXrn(auth=auth ,hostname=hostname).get_hrn()
+def hostname_to_urn(auth, hostname):
+    return IotlabXrn(auth=auth,hostname=hostname).get_urn()
+def slicename_to_hrn (auth_hrn, slicename):
+    return IotlabXrn(auth=auth_hrn,slicename=slicename).get_hrn()
+
+def hrn_to_iotlab_slicename (hrn):
+    return IotlabXrn(xrn=hrn,type='slice').iotlab_slicename()
+def hrn_to_iotlab_authname (hrn):
+    return IotlabXrn(xrn=hrn,type='any').iotlab_authname()
+
+
+class IotlabXrn (Xrn):
+
+    @staticmethod
+    def site_hrn (auth, testbed_name):
+        return '.'.join([auth, testbed_name])
+
+    def __init__ (self, auth=None, hostname=None, login=None, slicename=None,**kwargs):
+        #def hostname_to_hrn(auth_hrn, login_base, hostname):
+        if hostname is not None:
+            self.type ='node'
+            # keep only the first part of the DNS name
+            # escape the '.' in the hostname
+            self.hrn ='.'.join( [auth, Xrn.escape(hostname)] )
+            self.hrn_to_urn()
+
+        elif login is not None:
+            self.type = 'person'
+            self.hrn = '.'.join([auth, login])
+            self.hrn_to_urn()
+        #def slicename_to_hrn(auth_hrn, slicename):
+        elif slicename is not None:
+            self.type ='slice'
+            slicename = '_'.join([login, "slice"])
+            self.hrn = '.'.join([auth, slicename])
+            self.hrn_to_urn()
+            # split at the first _
+
+
+
+        else:
+            Xrn.__init__ (self,**kwargs)
+
+    #def hrn_to_pl_slicename(hrn):
+    def iotlab_slicename (self):
+        self._normalize()
+        leaf = self.leaf
+        sliver_id_parts = leaf.split(':')
+        name = sliver_id_parts[0]
+        name = re.sub('[^a-zA-Z0-9_]', '', name)
+        return name
+
+    #def hrn_to_pl_authname(hrn):
+    def iotlab_authname (self):
+        self._normalize()
+        return self.authority[-1]
+
+    def iotlab_login_base (self):
+        self._normalize()
+        if self.type and self.type.startswith('authority'):
+            base = self.leaf
+        else:
+            base = self.authority[-1]
+
+        # Fix up names of GENI Federates
+        base = base.lower()
+        base = re.sub('\\\[^a-zA-Z0-9]', '', base)
+
+        if len(base) > 20:
+            base = base[len(base)-20:]
+
+        return base