1 import sys, types, string, os
6 # ============================================================
7 # XML processing and query
10 def lookup(self, uuid):
11 """ lookup returns a new LustreDB instance"""
12 return self._lookup_by_uuid(uuid)
14 def lookup_name(self, name, class_name = ""):
15 """ lookup returns a new LustreDB instance"""
16 return self._lookup_by_name(name, class_name)
18 def lookup_class(self, class_name):
19 """ lookup returns a new LustreDB instance"""
20 return self._lookup_by_class(class_name)
22 def get_val(self, tag, default=None):
23 v = self._get_val(tag)
31 return self._get_class()
33 def get_val_int(self, tag, default=0):
34 str = self._get_val(tag)
40 raise LconfError("text value is not integer:", str)
42 def get_first_ref(self, tag):
43 """ Get the first uuidref of the type TAG. Only
44 one is expected. Returns the uuid."""
45 uuids = self._get_refs(tag)
50 def get_refs(self, tag):
51 """ Get all the refs of type TAG. Returns list of uuids. """
52 uuids = self._get_refs(tag)
55 def get_all_refs(self):
56 """ Get all the refs. Returns list of uuids. """
57 uuids = self._get_all_refs()
60 def nid2server(self, nid, net_type):
61 netlist = self.lookup_class('network')
62 for net_db in netlist:
63 if net_db.get_val('nid') == nid and net_db.get_val('nettype') == net_type:
67 # Find the target_device for target on a node
68 # node->profiles->device_refs->target
69 def get_node_tgt_dev(self, node_name, target_uuid):
70 node_db = self.lookup_name(node_name)
73 return self.get_tgt_dev(target_uuid)
75 # get all network uuids for this node
76 def get_networks(self):
78 prof_list = self.get_refs('profile')
79 for prof_uuid in prof_list:
80 prof_db = self.lookup(prof_uuid)
81 net_list = prof_db.get_refs('network')
82 for net_uuid in net_list:
86 def get_active_dev(self, tgtuuid):
87 tgt = self.lookup(tgtuuid)
88 tgt_dev_uuid =tgt.get_first_ref('active')
91 def get_tgt_dev(self, tgtuuid):
92 prof_list = self.get_refs('profile')
93 for prof_uuid in prof_list:
94 prof_db = self.lookup(prof_uuid)
96 panic("profile:", profile, "not found.")
97 for ref_class, ref_uuid in prof_db.get_all_refs():
98 if ref_class in ('osd', 'mdsdev'):
99 devdb = self.lookup(ref_uuid)
100 uuid = devdb.get_first_ref('target')
105 def get_group(self, group):
107 devs = self.lookup_class('mds')
109 if tgt.get_val('group', "") == group:
110 ret.append(tgt.getUUID())
111 devs = self.lookup_class('ost')
113 if tgt.get_val('group', "") == group:
114 ret.append(tgt.getUUID())
117 # Change the current active device for a target
118 def update_active(self, tgtuuid, new_uuid):
119 self._update_active(tgtuuid, new_uuid)
121 def get_version(self):
122 return self.get_val('version')
124 class LustreDB_XML(LustreDB):
125 def __init__(self, dom, root_node):
128 self.root_node = root_node
130 def xmltext(self, dom_node, tag):
131 list = dom_node.getElementsByTagName(tag)
135 if dom_node.firstChild:
136 txt = string.strip(dom_node.firstChild.data)
140 def xmlattr(self, dom_node, attr):
141 return dom_node.getAttribute(attr)
143 def _get_val(self, tag):
144 """a value could be an attribute of the current node
145 or the text value in a child node"""
146 ret = self.xmlattr(self.dom_node, tag)
148 ret = self.xmltext(self.dom_node, tag)
151 def _get_class(self):
152 return self.dom_node.nodeName
154 def get_ref_type(self, ref_tag):
155 res = string.split(ref_tag, '_')
159 # [(ref_class, ref_uuid),]
160 def _get_all_refs(self):
162 for n in self.dom_node.childNodes:
163 if n.nodeType == n.ELEMENT_NODE:
164 ref_uuid = self.xml_get_ref(n)
165 ref_class = self.get_ref_type(n.nodeName)
166 list.append((ref_class, ref_uuid))
171 def _get_refs(self, tag):
172 """ Get all the refs of type TAG. Returns list of uuids. """
174 refname = '%s_ref' % tag
175 reflist = self.dom_node.getElementsByTagName(refname)
177 uuids.append(self.xml_get_ref(r))
180 def xmllookup_by_uuid(self, dom_node, uuid):
181 for n in dom_node.childNodes:
182 if n.nodeType == n.ELEMENT_NODE:
183 if self.xml_get_uuid(n) == uuid:
186 n = self.xmllookup_by_uuid(n, uuid)
190 def _lookup_by_uuid(self, uuid):
191 dom = self. xmllookup_by_uuid(self.root_node, uuid)
193 return LustreDB_XML(dom, self.root_node)
195 def xmllookup_by_name(self, dom_node, name):
196 for n in dom_node.childNodes:
197 if n.nodeType == n.ELEMENT_NODE:
198 if self.xml_get_name(n) == name:
201 n = self.xmllookup_by_name(n, name)
205 def _lookup_by_name(self, name, class_name):
206 dom = self.xmllookup_by_name(self.root_node, name)
208 return LustreDB_XML(dom, self.root_node)
210 def xmllookup_by_class(self, dom_node, class_name):
211 return dom_node.getElementsByTagName(class_name)
213 def _lookup_by_class(self, class_name):
215 domlist = self.xmllookup_by_class(self.root_node, class_name)
217 ret.append(LustreDB_XML(node, self.root_node))
220 def xml_get_name(self, n):
221 return n.getAttribute('name')
224 return self.xml_get_name(self.dom_node)
226 def xml_get_ref(self, n):
227 return n.getAttribute('uuidref')
229 def xml_get_uuid(self, dom_node):
230 return dom_node.getAttribute('uuid')
233 return self.xml_get_uuid(self.dom_node)
235 # Convert routes from the router to a route that will be used
236 # on the local system. The network type and gw are changed to the
237 # interface on the router the local system will connect to.
238 def get_local_routes(self, type, gw):
239 """ Return the routes as a list of tuples of the form:
240 [(type, gw, lo, hi),]"""
242 tbl = self.dom_node.getElementsByTagName('routetbl')
244 routes = t.getElementsByTagName('route')
246 net_type = self.xmlattr(r, 'type')
248 lo = self.xmlattr(r, 'lo')
249 hi = self.xmlattr(r, 'hi')
250 tgt_cluster_id = self.xmlattr(r, 'tgtclusterid')
251 res.append((type, gw, tgt_cluster_id, lo, hi))
254 def get_route_tbl(self):
256 for r in self.dom_node.getElementsByTagName('route'):
257 net_type = self.xmlattr(r, 'type')
258 gw = self.xmlattr(r, 'gw')
259 gw_cluster_id = self.xmlattr(r, 'gwclusterid')
260 tgt_cluster_id = self.xmlattr(r, 'tgtclusterid')
261 lo = self.xmlattr(r, 'lo')
262 hi = self.xmlattr(r, 'hi')
263 ret.append((net_type, gw, gw_cluster_id, tgt_cluster_id, lo, hi))
266 def _update_active(self, tgt, new):
267 raise LconfError("updates not implemented for XML")
269 # ================================================================
271 class LustreDB_LDAP(LustreDB):
272 def __init__(self, name, attrs,
275 url = "ldap://localhost",
276 user = "cn=Manager, fs=lustre",
282 self._parent = parent
288 self._base = parent._base
295 self.l = ldap.initialize(self._url)
296 # Set LDAP protocol version used
297 self.l.protocol_version=ldap.VERSION3
298 # user and pw only needed if modifying db
299 self.l.bind_s(self._user, self._pw, ldap.AUTH_SIMPLE);
300 except ldap.LDAPError, e:
301 raise Lustre.LconfError('Unable to connection to ldap server')
304 self._name, self._attrs = self.l.search_s(self._base,
306 except ldap.LDAPError, e:
307 raise Lustre.LconfError("no config found in ldap: %s"
312 def ldap_search(self, filter):
313 """Return list of uuids matching the filter."""
319 for name, attrs in self.l.search_s(dn, ldap.SCOPE_ONELEVEL,
321 for v in attrs['uuid']:
323 except ldap.NO_SUCH_OBJECT, e:
325 except ldap.LDAPError, e:
326 print e # FIXME: die here?
329 ret.append(self._lookup_by_uuid(uuid))
332 def _lookup_by_name(self, name, class_name):
333 list = self.ldap_search("lustreName=%s" %(name))
338 def _lookup_by_class(self, class_name):
339 return self.ldap_search("objectclass=%s" %(string.upper(class_name)))
341 def _lookup_by_uuid(self, uuid):
343 dn = "uuid=%s,%s" % (uuid, self._base)
346 for name, attrs in self.l.search_s(dn, ldap.SCOPE_BASE,
348 ret = LustreDB_LDAP(name, attrs, parent = self)
350 except ldap.NO_SUCH_OBJECT, e:
351 pass # just return empty list
352 except ldap.LDAPError, e:
353 print e # FIXME: die here?
357 def _get_val(self, k):
359 if self._attrs.has_key(k):
361 if type(v) == types.ListType:
367 def _get_class(self):
368 return string.lower(self._attrs['objectClass'][0])
370 def get_ref_type(self, ref_tag):
374 # [(ref_class, ref_uuid),]
375 def _get_all_refs(self):
377 for k in self._attrs.keys():
378 if re.search('.*Ref', k):
379 for uuid in self._attrs[k]:
380 ref_class = self.get_ref_type(k)
381 list.append((ref_class, uuid))
384 def _get_refs(self, tag):
385 """ Get all the refs of type TAG. Returns list of uuids. """
387 refname = '%sRef' % tag
388 if self._attrs.has_key(refname):
389 return self._attrs[refname]
393 return self._get_val('lustreName')
396 return self._get_val('uuid')
398 def get_route_tbl(self):
401 def _update_active(self, tgtuuid, newuuid):
402 """Return list of uuids matching the filter."""
404 dn = "uuid=%s,%s" %(tgtuuid, self._base)
408 self.l.modify_s(dn, [(ldap.MOD_REPLACE, "activeRef", newuuid)])
409 except ldap.NO_SUCH_OBJECT, e:
411 except ldap.LDAPError, e:
412 print e # FIXME: die here?