class RedHatClusterNode(ClusterNode):
"""
Extends the generall ClusterNode class
by adding special queries for this cluster
type.
"""
clustat_pathroot=xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_clustat_nodes, RedHatClusterRepository.element_clustat_node+'[@'+RedHatClusterRepository.attribute_clustat_node_name+'="%s"]')
def __init__(self, element, doc=None):
super(RedHatClusterNode, self).__init__(element, doc)
from helper import RedHatClusterHelper, HelperNotSupportedError
try:
self.helper=RedHatClusterHelper()
except HelperNotSupportedError:
self.helper=None
self.addNonStatic("state")
self.addNonStatic("local")
self.addNonStatic("estranged")
self.addNonStatic("rgmanager")
self.addNonStatic("rgmanager_master")
self.addNonStatic("qdisk")
def query(self, param, *params, **keys):
if self.non_statics.get(param, None) != None and self.helper:
return self.helper.queryStatusElement(query=xpathjoin(self.xpath_clustat, self.element_nodes, self.element_node+'['+self.attribute_node_name+'="'+self.getName()+'"]', self.non_statics.get(param)))
elif self.helper:
return self.helper.queryStatusElement(query=os.path.join(self.clustat_pathroot %self.getName(), "@"+param))
else:
return None
def getName(self):
"""
@return: nodename
@rtype: string
"""
return self.getAttribute(RedHatClusterRepository.attribute_clusternode_name)
def getId(self):
"""
@return: nodeid
@rtype: int
"""
return self.getAttribute(RedHatClusterRepository.attribute_clusternode_nodeid, "")
def getVotes(self):
"""
@return: votes for quorum
@rtype: int
"""
return self.getAttribute(RedHatClusterRepository.attribute_clusternode_votes, "1")
def isActive(self):
"""
@return: True if clusternode is active
"""
return self.state==None or self.state=='1'
def __init__(self, element, doc=None):
super(RedHatClusterNode, self).__init__(element, doc)
from helper import RedHatClusterHelper, HelperNotSupportedError
try:
self.helper=RedHatClusterHelper()
except HelperNotSupportedError:
self.helper=None
self.addNonStatic("state")
self.addNonStatic("local")
self.addNonStatic("estranged")
self.addNonStatic("rgmanager")
self.addNonStatic("rgmanager_master")
self.addNonStatic("qdisk")
def __init__(self, clusterRepository):
"""
Set used clusterRepository
@param clusterRepository: clusterRepository to use
@type clusterRepository: L{RedhatClusterRepository}
"""
super(RedHatClusterInfo, self).__init__(clusterRepository)
from helper import RedHatClusterHelper, HelperNotSupportedError
try:
self.helper = RedHatClusterHelper()
except HelperNotSupportedError:
self.helper = None
self.addNonStatic(
"name",
xpathjoin(
RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_clustat_cluster,
"@" + RedHatClusterRepository.attribute_clustat_cluster_name))
# self.addNonStatic(RedhatClusterInfo, "id")
self.addNonStatic(
"generation",
xpathjoin(
RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_clustat_cluster, "@" +
RedHatClusterRepository.attribute_clustat_cluster_generation))
self.addNonStatic(
"quorum_quorate",
xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_quorum,
"@" + RedHatClusterRepository.attribute_quorum_quorate))
self.addNonStatic(
"quorum_groupmember",
xpathjoin(
RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_quorum,
"@" + RedHatClusterRepository.attribute_quorum_groupmember))
def __init__(self, clusterRepository):
"""
Set used clusterRepository
@param clusterRepository: clusterRepository to use
@type clusterRepository: L{RedhatClusterRepository}
"""
super(RedHatClusterInfo, self).__init__(clusterRepository)
from helper import RedHatClusterHelper, HelperNotSupportedError
try:
self.helper=RedHatClusterHelper()
except HelperNotSupportedError:
self.helper=None
self.addNonStatic("name", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_clustat_cluster, "@"+RedHatClusterRepository.attribute_clustat_cluster_name))
# self.addNonStatic(RedhatClusterInfo, "id")
self.addNonStatic("generation", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_clustat_cluster, "@"+RedHatClusterRepository.attribute_clustat_cluster_generation))
self.addNonStatic("quorum_quorate", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_quorum, "@"+RedHatClusterRepository.attribute_quorum_quorate))
self.addNonStatic("quorum_groupmember", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_quorum, "@"+RedHatClusterRepository.attribute_quorum_groupmember))
class RedHatClusterInfo(ClusterInfo):
"""
Extends L{ClusterInfo} to provides a set of special queries
to use with a L{RedhatClusterRepository} to get information
about the used redhat clusterconfiguration.
"""
def __init__(self, clusterRepository):
"""
Set used clusterRepository
@param clusterRepository: clusterRepository to use
@type clusterRepository: L{RedhatClusterRepository}
"""
super(RedHatClusterInfo, self).__init__(clusterRepository)
from helper import RedHatClusterHelper, HelperNotSupportedError
try:
self.helper = RedHatClusterHelper()
except HelperNotSupportedError:
self.helper = None
self.addNonStatic(
"name",
xpathjoin(
RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_clustat_cluster,
"@" + RedHatClusterRepository.attribute_clustat_cluster_name))
# self.addNonStatic(RedhatClusterInfo, "id")
self.addNonStatic(
"generation",
xpathjoin(
RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_clustat_cluster, "@" +
RedHatClusterRepository.attribute_clustat_cluster_generation))
self.addNonStatic(
"quorum_quorate",
xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_quorum,
"@" + RedHatClusterRepository.attribute_quorum_quorate))
self.addNonStatic(
"quorum_groupmember",
xpathjoin(
RedHatClusterRepository.getDefaultClustatXPath(),
RedHatClusterRepository.element_quorum,
"@" + RedHatClusterRepository.attribute_quorum_groupmember))
def query(self, param, *params, **keys):
if keys and keys.has_key("pathroot"):
_pathroot = keys["pathroot"]
elif params and len(params) >= 1:
_pathroot = params[0]
else:
_pathroot = RedHatClusterRepository.getDefaultClustatXPath()
result = ""
if xpathsplit(_pathroot)[
0] == RedHatClusterRepository.element_clustat and self.helper:
if self.non_statics.get(param, None) != None:
result = self.helper.queryStatusElement(
query=xpathjoin(_pathroot, self.non_statics.get(param)))
else:
result = self.helper.queryStatusElement(
query=xpathjoin(_pathroot, "@" + param))
else:
result = self.queryValue(param)
if isinstance(result, basestring):
return result
else:
":".join(result)
def queryValue(self, query):
"""
Provides the possibility to get specific values by
execute queries which are not yet implemented as a
direct function.
@param query: xpath to query clusterinfo instance
@type query: string
@return: answer of proceeded query as list of strings
@rtype: list
"""
self.log.debug("queryValue: %s" % (query))
_tmp1 = evaluateXPath(query, self.clusterRepository.getElement())
_tmp2 = []
for i in range(len(_tmp1)):
_tmp2.append(_tmp1[i])
return _tmp2
def queryXml(self, query):
"""
Provides the possibility to execute queries
which are not yet implemented as a direct function
to get a part of the xml.
@param query: xpath to query clusterinfo instance
@type query: string
@return: answer of proceeded query as xml
@rtype: list(xml.dom.Node)
"""
self.log.debug("queryXml: %s" % (query))
_tmp1 = evaluateXPath(query, self.clusterRepository.getElement())
return _tmp1
def getNode(self, name):
"""
@param name: name or id of clusternode
@type name: string
@return: Clusternodeinstance belonging to given clusternodename
@rtype: L{ClusterNode}
"""
self.log.debug("get node with given name from clusterrepository: %s" %
(name))
if self.clusterRepository.nodeNameMap.has_key(name):
return self.clusterRepository.nodeNameMap[name]
else:
return self.getNodeFromId(name)
def getNodeFromId(self, _id):
"""
@param name: _id of clusternode
@type name: int
@return: Clusternodeinstance belonging to given nodeid
@rtype: L{ClusterNode}
"""
self.log.debug("get node with given id from clusterrepository: %s" %
(str(_id)))
return self.clusterRepository.nodeIdMap[str(_id)]
def getNodeName(self, mac):
"""
@param mac: mac-address
@type mac: string
@return: Clusternodename belonging to given mac-address
@rtype: string
"""
self.log.debug(
"get name of node with given mac from clusterrepository: %s" %
(str(mac)))
return self.clusterRepository.getNodeName(mac)
def getNodeNameById(self, _id):
"""
@param _id: nodeid
@type id: int
@return: Clusternodename belonging to given nodeid
@rtype: string
"""
self.log.debug(
"get name of node with given nodid from clusterrepository: %s" %
(str(_id)))
return self.clusterRepository.getNodeNameById(_id)
def getNodeId(self, mac):
"""
@param mac: mac-address
@type mac: string
@return: Clusternodeid belonging to given mac-address
@rtype: string
"""
self.log.debug(
"get id of node with given mac from clusterrepository: %s" %
(str(mac)))
return self.clusterRepository.getNodeId(mac)
def getFailoverdomainNodes(self, failoverdomain):
"""
@param failoverdomain: failoverdomain
@type failoverdomain: string
@return: Names of nodes which belong to the given failoverdomain
@rtype: string
"""
#no defaultvalue specified because every dailoverdomain needs to have one or more failoverdomainnodes
_xpath = xpathjoin(
RedHatClusterRepository.getDefaultClusterFailoverDomain(
failoverdomain),
RedHatClusterRepository.element_failoverdomainnode,
"@" + RedHatClusterRepository.attribute_failoverdomainnode_name)
self.log.debug("get failoverdomainnodes from failoverdomain %s: %s" %
(failoverdomain, _xpath))
_tmp1 = self.queryValue(_xpath)
return _tmp1
def getFailoverdomainPrefNode(self, failoverdomain):
"""
@param failoverdomain: failoverdomain
@type failoverdomain: string
@return: Name of node which is prefered in failovercase of given failoverdomain
@rtype: string
"""
#no defaultvalue specified because every dailoverdomain needs to have one or more failoverdomainnodes and priority is a needed attribute
_tmp1 = self.getFailoverdomainNodes(failoverdomain)
#search for lowest priority
minprio = "0"
for i in range(len(_tmp1)):
_xpath = xpathjoin(
RedHatClusterRepository.getDefaultClusterFailoverDomain(
failoverdomain),
RedHatClusterRepository.element_failoverdomainnode + "[@" +
RedHatClusterRepository.attribute_failoverdomainnode_name +
"=\"" + _tmp1[i] + "\"]", "@" +
RedHatClusterRepository.attribute_failoverdomainnode_priority)
self.log.debug(
"query lowest priority of failoverdomainnodes belonging to %s : %s"
% (failoverdomain, _xpath))
_tmp2 = self.queryValue(_xpath)[0]
if (minprio == "0") or (_tmp2 < minprio):
minprio = _tmp2
#get node with lowest priority
try:
_xpath = xpathjoin(
RedHatClusterRepository.getDefaultClusterFailoverDomain(
failoverdomain),
RedHatClusterRepository.element_failoverdomainnode + "[@" +
RedHatClusterRepository.attribute_failoverdomainnode_priority +
"=\"" + str(minprio) + "\"]", "@" +
RedHatClusterRepository.attribute_failoverdomainnode_name)
self.log.debug(
"get failoverprefdomainnode from failoverdomain %s: %s" %
(failoverdomain, _xpath))
return self.queryValue(_xpath)[0]
except IndexError:
raise NameError(
"Cannot find prefered failoverdomainnode for domain %s." %
failoverdomain)
def getNodeIds(self):
"""
@return: List of clusternodeids
@rtype: list
"""
self.log.debug("get list of nodeids from clusterrepository")
return self.clusterRepository.nodeIdMap.keys()
def getNextNodeID(self):
"""
@return: next not used nodeid
@rtype: int
"""
idlist = self.getNodeIds()
idlist.sort()
return int(idlist[-1]) + 1
class RedHatClusterInfo(ClusterInfo):
"""
Extends L{ClusterInfo} to provides a set of special queries
to use with a L{RedhatClusterRepository} to get information
about the used redhat clusterconfiguration.
"""
def __init__(self, clusterRepository):
"""
Set used clusterRepository
@param clusterRepository: clusterRepository to use
@type clusterRepository: L{RedhatClusterRepository}
"""
super(RedHatClusterInfo, self).__init__(clusterRepository)
from helper import RedHatClusterHelper, HelperNotSupportedError
try:
self.helper=RedHatClusterHelper()
except HelperNotSupportedError:
self.helper=None
self.addNonStatic("name", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_clustat_cluster, "@"+RedHatClusterRepository.attribute_clustat_cluster_name))
# self.addNonStatic(RedhatClusterInfo, "id")
self.addNonStatic("generation", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_clustat_cluster, "@"+RedHatClusterRepository.attribute_clustat_cluster_generation))
self.addNonStatic("quorum_quorate", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_quorum, "@"+RedHatClusterRepository.attribute_quorum_quorate))
self.addNonStatic("quorum_groupmember", xpathjoin(RedHatClusterRepository.getDefaultClustatXPath(), RedHatClusterRepository.element_quorum, "@"+RedHatClusterRepository.attribute_quorum_groupmember))
def query(self, param, *params, **keys):
if keys and keys.has_key("pathroot"):
_pathroot=keys["pathroot"]
elif params and len(params)>=1:
_pathroot=params[0]
else:
_pathroot=RedHatClusterRepository.getDefaultClustatXPath()
result=""
if xpathsplit(_pathroot)[0] == RedHatClusterRepository.element_clustat and self.helper:
if self.non_statics.get(param, None) != None:
result=self.helper.queryStatusElement(query= xpathjoin(_pathroot, self.non_statics.get(param)))
else:
result=self.helper.queryStatusElement(query= xpathjoin(_pathroot, "@"+param))
else:
result=self.queryValue(param)
if isinstance(result, basestring):
return result
else:
":".join(result)
def queryValue(self, query):
"""
Provides the possibility to get specific values by
execute queries which are not yet implemented as a
direct function.
@param query: xpath to query clusterinfo instance
@type query: string
@return: answer of proceeded query as list of strings
@rtype: list
"""
self.log.debug("queryValue: %s" %(query))
_tmp1 = evaluateXPath(query, self.clusterRepository.getElement())
_tmp2 = []
for i in range(len(_tmp1)):
_tmp2.append(_tmp1[i])
return _tmp2
def queryXml(self, query):
"""
Provides the possibility to execute queries
which are not yet implemented as a direct function
to get a part of the xml.
@param query: xpath to query clusterinfo instance
@type query: string
@return: answer of proceeded query as xml
@rtype: list(xml.dom.Node)
"""
self.log.debug("queryXml: %s" %(query))
_tmp1 = evaluateXPath(query, self.clusterRepository.getElement())
return _tmp1
def getNode(self, name):
"""
@param name: name or id of clusternode
@type name: string
@return: Clusternodeinstance belonging to given clusternodename
@rtype: L{ClusterNode}
"""
self.log.debug("get node with given name from clusterrepository: %s" %(name))
if self.clusterRepository.nodeNameMap.has_key(name):
return self.clusterRepository.nodeNameMap[name]
else:
return self.getNodeFromId(name)
def getNodeFromId(self, _id):
"""
@param name: _id of clusternode
@type name: int
@return: Clusternodeinstance belonging to given nodeid
@rtype: L{ClusterNode}
"""
self.log.debug("get node with given id from clusterrepository: %s" %(str(_id)))
return self.clusterRepository.nodeIdMap[str(_id)]
def getNodeName(self, mac):
"""
@param mac: mac-address
@type mac: string
@return: Clusternodename belonging to given mac-address
@rtype: string
"""
self.log.debug("get name of node with given mac from clusterrepository: %s" %(str(mac)))
return self.clusterRepository.getNodeName(mac)
def getNodeNameById(self, _id):
"""
@param _id: nodeid
@type id: int
@return: Clusternodename belonging to given nodeid
@rtype: string
"""
self.log.debug("get name of node with given nodid from clusterrepository: %s" %(str(_id)))
return self.clusterRepository.getNodeNameById(_id)
def getNodeId(self, mac):
"""
@param mac: mac-address
@type mac: string
@return: Clusternodeid belonging to given mac-address
@rtype: string
"""
self.log.debug("get id of node with given mac from clusterrepository: %s" %(str(mac)))
return self.clusterRepository.getNodeId(mac)
def getFailoverdomainNodes(self, failoverdomain):
"""
@param failoverdomain: failoverdomain
@type failoverdomain: string
@return: Names of nodes which belong to the given failoverdomain
@rtype: string
"""
#no defaultvalue specified because every dailoverdomain needs to have one or more failoverdomainnodes
_xpath=xpathjoin(RedHatClusterRepository.getDefaultClusterFailoverDomain(failoverdomain), RedHatClusterRepository.element_failoverdomainnode, "@"+RedHatClusterRepository.attribute_failoverdomainnode_name)
self.log.debug("get failoverdomainnodes from failoverdomain %s: %s" %(failoverdomain,_xpath))
_tmp1 = self.queryValue(_xpath)
return _tmp1
def getFailoverdomainPrefNode(self, failoverdomain):
"""
@param failoverdomain: failoverdomain
@type failoverdomain: string
@return: Name of node which is prefered in failovercase of given failoverdomain
@rtype: string
"""
#no defaultvalue specified because every dailoverdomain needs to have one or more failoverdomainnodes and priority is a needed attribute
_tmp1 = self.getFailoverdomainNodes(failoverdomain)
#search for lowest priority
minprio = "0"
for i in range(len(_tmp1)):
_xpath=xpathjoin(RedHatClusterRepository.getDefaultClusterFailoverDomain(failoverdomain), RedHatClusterRepository.element_failoverdomainnode+"[@"+RedHatClusterRepository.attribute_failoverdomainnode_name+"=\""+_tmp1[i]+"\"]", "@"+RedHatClusterRepository.attribute_failoverdomainnode_priority)
self.log.debug("query lowest priority of failoverdomainnodes belonging to %s : %s" %(failoverdomain,_xpath))
_tmp2 = self.queryValue(_xpath)[0]
if (minprio == "0") or (_tmp2 < minprio):
minprio = _tmp2
#get node with lowest priority
try:
_xpath=xpathjoin(RedHatClusterRepository.getDefaultClusterFailoverDomain(failoverdomain), RedHatClusterRepository.element_failoverdomainnode+"[@"+RedHatClusterRepository.attribute_failoverdomainnode_priority+"=\""+str(minprio)+"\"]", "@"+RedHatClusterRepository.attribute_failoverdomainnode_name)
self.log.debug("get failoverprefdomainnode from failoverdomain %s: %s" %(failoverdomain, _xpath))
return self.queryValue(_xpath)[0]
except IndexError:
raise NameError("Cannot find prefered failoverdomainnode for domain %s." %failoverdomain)
def getNodeIds(self):
"""
@return: List of clusternodeids
@rtype: list
"""
self.log.debug("get list of nodeids from clusterrepository")
return self.clusterRepository.nodeIdMap.keys()
def getNextNodeID(self):
"""
@return: next not used nodeid
@rtype: int
"""
idlist = self.getNodeIds()
idlist.sort()
return int(idlist[-1])+1
