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 Lustre.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 get_lov_tgts(self, tag):
61 """ Returns list of lovtgts. """
62 tgts = self._get_lov_tgts(tag)
65 def nid2server(self, nid, net_type, cluster_id):
66 netlist = self.lookup_class('network')
67 for net_db in netlist:
68 if (net_db.get_val('nid') == nid and
69 net_db.get_val('nettype') == net_type and
70 net_db.get_val('clusterid') == cluster_id):
74 # Find the target_device for target on a node
75 # node->profiles->device_refs->target
76 def get_node_tgt_dev(self, node_name, target_uuid):
77 node_db = self.lookup_name(node_name)
80 return node_db.get_tgt_dev(target_uuid)
82 # get all network uuids for this node
83 def get_networks(self):
85 prof_list = self.get_refs('profile')
86 for prof_uuid in prof_list:
87 prof_db = self.lookup(prof_uuid)
88 net_list = prof_db.get_refs('network')
89 for net_uuid in net_list:
93 def get_active_dev(self, tgtuuid):
94 tgt = self.lookup(tgtuuid)
95 tgt_dev_uuid =tgt.get_first_ref('active')
98 def get_tgt_dev(self, tgtuuid):
99 prof_list = self.get_refs('profile')
100 for prof_uuid in prof_list:
101 prof_db = self.lookup(prof_uuid)
103 panic("profile:", profile, "not found.")
104 for ref_class, ref_uuid in prof_db.get_all_refs():
105 if ref_class in ('osd', 'mdsdev'):
106 devdb = self.lookup(ref_uuid)
107 uuid = devdb.get_first_ref('target')
112 def get_group(self, group):
114 devs = self.lookup_class('mds')
116 if tgt.get_val('group', "") == group:
117 ret.append(tgt.getUUID())
118 devs = self.lookup_class('ost')
120 if tgt.get_val('group', "") == group:
121 ret.append(tgt.getUUID())
124 # Change the current active device for a target
125 def update_active(self, tgtuuid, new_uuid):
126 self._update_active(tgtuuid, new_uuid)
128 def get_version(self):
129 return self.get_val('version')
131 class LustreDB_XML(LustreDB):
132 def __init__(self, dom, root_node):
135 self.root_node = root_node
141 def xmltext(self, dom_node, tag):
142 list = dom_node.getElementsByTagName(tag)
146 if dom_node.firstChild:
147 txt = string.strip(dom_node.firstChild.data)
151 def xmlattr(self, dom_node, attr):
152 return dom_node.getAttribute(attr)
154 def _get_val(self, tag):
155 """a value could be an attribute of the current node
156 or the text value in a child node"""
157 ret = self.xmlattr(self.dom_node, tag)
159 ret = self.xmltext(self.dom_node, tag)
162 def _get_class(self):
163 return self.dom_node.nodeName
165 def get_ref_type(self, ref_tag):
166 res = string.split(ref_tag, '_')
170 # [(ref_class, ref_uuid),]
171 def _get_all_refs(self):
173 for n in self.dom_node.childNodes:
174 if n.nodeType == n.ELEMENT_NODE:
175 ref_uuid = self.xml_get_ref(n)
176 ref_class = self.get_ref_type(n.nodeName)
177 list.append((ref_class, ref_uuid))
182 def _get_refs(self, tag):
183 """ Get all the refs of type TAG. Returns list of uuids. """
185 refname = '%s_ref' % tag
186 reflist = self.dom_node.getElementsByTagName(refname)
188 uuids.append(self.xml_get_ref(r))
191 def _get_lov_tgts(self, tag):
192 """ Get all the refs of type TAG. Returns list of lov_tgts. """
194 tgtlist = self.dom_node.getElementsByTagName(tag)
196 uuidref = tgt.getAttribute('uuidref')
197 index = tgt.getAttribute('index')
198 generation = tgt.getAttribute('generation')
199 active = int(tgt.getAttribute('active'))
200 tgts.append((uuidref, index, generation, active))
203 def xmllookup_by_uuid(self, dom_node, uuid):
204 for n in dom_node.childNodes:
205 if n.nodeType == n.ELEMENT_NODE:
206 if self.xml_get_uuid(n) == uuid:
209 n = self.xmllookup_by_uuid(n, uuid)
213 def _lookup_by_uuid(self, uuid):
214 dom = self. xmllookup_by_uuid(self.root_node, uuid)
216 return LustreDB_XML(dom, self.root_node)
218 def xmllookup_by_name(self, dom_node, name):
219 for n in dom_node.childNodes:
220 if n.nodeType == n.ELEMENT_NODE:
221 if self.xml_get_name(n) == name:
224 n = self.xmllookup_by_name(n, name)
228 def _lookup_by_name(self, name, class_name):
229 dom = self.xmllookup_by_name(self.root_node, name)
231 return LustreDB_XML(dom, self.root_node)
233 def xmllookup_by_class(self, dom_node, class_name):
234 return dom_node.getElementsByTagName(class_name)
236 def _lookup_by_class(self, class_name):
238 domlist = self.xmllookup_by_class(self.root_node, class_name)
240 ret.append(LustreDB_XML(node, self.root_node))
243 def xml_get_name(self, n):
244 return n.getAttribute('name')
247 return self.xml_get_name(self.dom_node)
249 def xml_get_ref(self, n):
250 return n.getAttribute('uuidref')
252 def xml_get_uuid(self, dom_node):
253 return dom_node.getAttribute('uuid')
256 return self.xml_get_uuid(self.dom_node)
258 # Convert routes from the router to a route that will be used
259 # on the local system. The network type and gw are changed to the
260 # interface on the router the local system will connect to.
261 def get_local_routes(self, type, gw):
262 """ Return the routes as a list of tuples of the form:
263 [(type, gw, lo, hi),]"""
265 tbl = self.dom_node.getElementsByTagName('routetbl')
267 routes = t.getElementsByTagName('route')
269 net_type = self.xmlattr(r, 'type')
271 lo = self.xmlattr(r, 'lo')
272 hi = self.xmlattr(r, 'hi')
273 tgt_cluster_id = self.xmlattr(r, 'tgtclusterid')
274 res.append((type, gw, tgt_cluster_id, lo, hi))
277 def get_route_tbl(self):
279 for r in self.dom_node.getElementsByTagName('route'):
280 net_type = self.xmlattr(r, 'type')
281 gw = self.xmlattr(r, 'gw')
282 gw_cluster_id = self.xmlattr(r, 'gwclusterid')
283 tgt_cluster_id = self.xmlattr(r, 'tgtclusterid')
284 lo = self.xmlattr(r, 'lo')
285 hi = self.xmlattr(r, 'hi')
286 ret.append((net_type, gw, gw_cluster_id, tgt_cluster_id, lo, hi))
289 def _update_active(self, tgt, new):
290 raise Lustre.LconfError("updates not implemented for XML")
292 # ================================================================
294 class LustreDB_LDAP(LustreDB):
295 def __init__(self, name, attrs,
298 url = "ldap://localhost",
299 user = "cn=Manager, fs=lustre",
305 self._parent = parent
311 self._base = parent._base
318 self.l = ldap.initialize(self._url)
319 # Set LDAP protocol version used
320 self.l.protocol_version=ldap.VERSION3
321 # user and pw only needed if modifying db
322 self.l.bind_s(self._user, self._pw, ldap.AUTH_SIMPLE);
323 except ldap.LDAPError, e:
324 raise Lustre.LconfError('Unable to connect to ldap server:' + self._url)
327 self._name, self._attrs = self.l.search_s(self._base,
329 except ldap.LDAPError, e:
330 raise Lustre.LconfError("no config found in ldap: %s"
335 def ldap_search(self, filter):
336 """Return list of uuids matching the filter."""
342 for name, attrs in self.l.search_s(dn, ldap.SCOPE_ONELEVEL,
344 for v in attrs['uuid']:
346 except ldap.NO_SUCH_OBJECT, e:
348 except ldap.LDAPError, e:
349 print e # FIXME: die here?
352 ret.append(self._lookup_by_uuid(uuid))
355 def _lookup_by_name(self, name, class_name):
356 list = self.ldap_search("lustreName=%s" %(name))
361 def _lookup_by_class(self, class_name):
362 return self.ldap_search("objectclass=%s" %(string.upper(class_name)))
364 def _lookup_by_uuid(self, uuid):
366 dn = "uuid=%s,%s" % (uuid, self._base)
369 for name, attrs in self.l.search_s(dn, ldap.SCOPE_BASE,
371 ret = LustreDB_LDAP(name, attrs, parent = self)
373 except ldap.NO_SUCH_OBJECT, e:
374 pass # just return empty list
375 except ldap.LDAPError, e:
376 print e # FIXME: die here?
380 def _get_val(self, k):
382 if self._attrs.has_key(k):
384 if type(v) == types.ListType:
390 def _get_class(self):
391 return string.lower(self._attrs['objectClass'][0])
393 def get_ref_type(self, ref_tag):
397 # [(ref_class, ref_uuid),]
398 def _get_all_refs(self):
400 for k in self._attrs.keys():
401 if re.search('.*Ref', k):
402 for uuid in self._attrs[k]:
403 ref_class = self.get_ref_type(k)
404 list.append((ref_class, uuid))
407 def _get_refs(self, tag):
408 """ Get all the refs of type TAG. Returns list of uuids. """
410 refname = '%sRef' % tag
411 if self._attrs.has_key(refname):
412 return self._attrs[refname]
416 return self._get_val('lustreName')
419 return self._get_val('uuid')
421 def get_route_tbl(self):
424 def _update_active(self, tgtuuid, newuuid):
425 """Return list of uuids matching the filter."""
427 dn = "uuid=%s,%s" %(tgtuuid, self._base)
431 self.l.modify_s(dn, [(ldap.MOD_REPLACE, "activeRef", newuuid)])
432 except ldap.NO_SUCH_OBJECT, e:
434 except ldap.LDAPError, e:
435 print e # FIXME: die here?