psphere: how to make thread safe

[sajuptpm]

Hi,

psphere: Python interface for the VMware vSphere Web Services SDK

I already developed an app using https://bitbucket.org/jkinred/psphere. But getting lot of errors since psphere is not thread safe (I think). So i wrote couple of scripts to test it (See attached files) and found that caching mechanism used by psphere is not thread safe. Could someone please give me some suggestion to make it thread safe.


=======Test Code ========

import psphere
from psphere.client import Client
from psphere.managedobjects import HostSystem, VirtualMachine, ComputeResource
client = Client("192.168.0.114", "root", "vmware1") ##vCenter
print "\nSucessfully connected to vCenter.\n"

from threading import Thread

def myfunc(i):
	host1 = HostSystem.get(client, name="192.168.0.134")
	host2 = HostSystem.get(client, name="192.168.0.113")
	print "----i------",i
	while True:
		#host1.update(properties=["config", "vm"])
		#host2.update(properties=["config", "vm"])
		c = type(host1.config.network)
		v = type(host2.config.network)
		for vm in host1.vm:
			k = vm.config.template
		for vm in host2.vm:
			p = vm.config.template


for i in range(10):	
    t = Thread(target=myfunc, args=(i,))
    t.start()


"""
OUTPUT 
=======
Sucessfully connected to vCenter.

----i------ 1
----i------ 3
----i------ 5
----i------ 0
 ----i------ 4
----i------ 2----i------ 7
----i------ 
9
----i------ 6
----i------ 8
Exception in thread Thread-4:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 504, in run
    self.__target(*self.__args, **self.__kwargs)
  File "vcenter_test1.py", line 19, in myfunc
    k = vm.config.template
  File "/home/saju/cvt/trunk/src/cvt/web/cvt/psphere/__init__.py", line 79, in __get__
    value = self.fget(inst)
  File "/home/saju/cvt/trunk/src/cvt/web/cvt/psphere/managedobjects.py", line 1236, in config
    return self._get_dataobject("config", False)
  File "/home/saju/cvt/trunk/src/cvt/web/cvt/psphere/__init__.py", line 116, in _get_dataobject
    return self._cache[name][0]
KeyError: 'config'

Exception in thread Thread-6:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 504, in run
    self.__target(*self.__args, **self.__kwargs)
  File "vcenter_test1.py", line 17, in myfunc
    v = type(host2.config.network)
AttributeError: VirtualMachineConfigInfo instance has no attribute 'network'



"""