def doRestore(self):
"""
Restore the status of instances
"""
self.logger.log("Begin to restore instance status...")
try:
self.readConfigInfo()
self.getUserInfo()
# dump status to file
cmd = ClusterCommand.getQueryStatusCmd(self.user, self.dbNodeInfo.id, self.__curStatusFile)
(status, output) = commands.getstatusoutput(cmd)
if status != 0:
self.logger.logExit("Query local instance status failed!Error: %s" % output)
bakDbStatus = DbClusterStatus()
bakDbStatus.initFromFile(self.__bakStatusFile)
bakNodeStatus = bakDbStatus.getDbNodeStatusById(self.dbNodeInfo.id)
if bakNodeStatus is None:
self.logger.logExit("Get backup status of local node failed!")
curDbStatus = DbClusterStatus()
curDbStatus.initFromFile(self.__curStatusFile)
curNodeStatus = curDbStatus.getDbNodeStatusById(self.dbNodeInfo.id)
if curNodeStatus is None:
self.logger.logExit("Get current status of local node failed!")
if not curNodeStatus.isNodeHealthy():
self.logger.logExit("Current status of node is not healthy!")
# Compare the status and restore it
bakInstances = bakNodeStatus.datanodes + bakNodeStatus.gtms
for bakInst in bakInstances:
curInst = curNodeStatus.getInstanceByDir(bakInst.datadir)
if curInst is None:
self.logger.logExit("Get current status of instance failed!DataDir:%s" % bakInst.datadir)
if bakInst.status == curInst.status:
continue
if bakInst.status == DbClusterStatus.INSTANCE_STATUS_PRIMARY:
self.__switchToPrimary(bakInst.datadir)
elif bakInst.status == DbClusterStatus.INSTANCE_STATUS_STANDBY:
self.__switchToStandby(bakInst.datadir)
except Exception, e:
self.logger.logExit(str(e))
def doBackup(self):
"""
Backup the status of instances
"""
self.logger.log("Begin to backup instance status...")
try:
self.readConfigInfo()
self.getUserInfo()
# dump status to file
cmd = ClusterCommand.getQueryStatusCmd(self.user, self.dbNodeInfo.id, self.__bakStatusFile)
(status, output) = commands.getstatusoutput(cmd)
if status != 0:
self.logger.logExit("Query local instance status failed!Error: %s" % output)
except Exception, e:
self.logger.logExit(str(e))
