Question

我第一次通过它在python中遇到问题会返回正确的值，但是在第二次传递时它会到达： vm_return.vmPerf（）

init类中定义的所有内容都完全从变量中删除，剩下的就是：

passed_vm_mor

因为它无法找到对象，因为当我第二次调用它时它不再存在，它没有任何意义。尽管如此，这只是一个误解......

import atexit
from pyVim.connect import SmartConnect, Disconnect
from pyVmomi import vim
import sys
import time

#globals

passed_vm_mor = ''


class getVM(object):

   def __init__(self, passed_vm_mor):
      self.passed_vm_mor = passed_vm_mor
      vcenter_connection = SmartConnect(host = hostname,user = username,pwd = password)
      atexit.register(Disconnect, vcenter_connection)             
      content = vcenter_connection.RetrieveContent()       
      perf_dict = {} 
      perfList = content.perfManager.perfCounter

      for counter in perfList: #build the vcenter counters for the objects
         counter_full = "{}.{}.{}".format(counter.groupInfo.key,counter.nameInfo.key,counter.rollupType)
         perf_dict[counter_full] = counter.key

      viewType = [vim.VirtualMachine]
      props = ['name','runtime.powerState', 'datastore']
      specType = vim.VirtualMachine
      objView = content.viewManager.CreateContainerView(content.rootFolder,viewType,True)  
      tSpec = vim.PropertyCollector.TraversalSpec(name = 'tSpecName', path = 'view', skip = False, type = vim.view.ContainerView)    
      pSpec = vim.PropertyCollector.PropertySpec(all = False, pathSet = props,type = specType)   
      oSpec = vim.PropertyCollector.ObjectSpec(obj = objView,selectSet = [tSpec],skip = False)   
      pfSpec = vim.PropertyCollector.FilterSpec(objectSet = [oSpec], propSet = [pSpec], reportMissingObjectsInResults = False)   
      vm_properties = content.propertyCollector.RetrieveProperties(specSet = [pfSpec])  
      objView.Destroy()     

      for vm_property in vm_properties: #loop through the list built from vcenter and build dictonaries.
         property_dic = {}
         for prop in vm_property.propSet:
            property_dic[prop.name] = prop.val 

         vm = vm_property.obj
         vm_mor = vm._moId
         if self.passed_vm_mor == vm_mor:
            self.vm = vm_property.obj
         else:
            continue   

   def vmPerf(self):
      self.vm_mor = self.vm._moId
      self.bootOptionsSupported = self.vm.capability.bootOptionsSupported   
      self.bootRetryOptionsSupported = self.vm.capability.bootRetryOptionsSupported   
      self.changeTrackingSupported = self.vm.capability.changeTrackingSupported   
      self.consolePreferencesSupported = self.vm.capability.consolePreferencesSupported 


cursor = db.cursor()
customer_id=24
sql = ('''select a.vm_mor from vms a, vm_groups b, customers c where c.customer_id = %d and c.customer_id = b.customer_id and b.vm_group_id = a.vm_group_id  ''') % customer_id
cursor.execute(sql)

for vm_mor in cursor:

         vm_return = getVM(vm_mor[0])
         vm_return.vmPerf()

Answer 1

只要您执行以下操作：

self.vm_mor = self.vm._moId

您下次通话时总是会失败，因为现在self.vm_mor现在只包含一个ID（_moId）。

我不确定你想通过这样做实现什么目标，但这样做会更有意义：

self._moId = self.vm._moId

如果您希望“直接访问”self.vm_mor的内部变量。

此外，请注意以下循环：

for vm_mor in cursor:

     vm_return = getVM(vm_mor[0])
     vm_return.vmPerf()

您使用不同的vm_return来一次又一次地覆盖v_mor。

如何遍历python类

1 个答案: