PeterHarding: ZSI - VMWare Interface moved to ZSI - VMware Interface: More conventional naming

2008-03-17T03:05:55Z

ZSI - VMWare Interface moved to ZSI - VMware Interface: More conventional naming

← Older revision	Revision as of 13:05, 17 March 2008
(No difference)

PeterHarding at 03:05, 17 March 2008

2008-03-17T03:05:15Z

← Older revision		Revision as of 13:05, 17 March 2008
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	</pre>		</pre>

	[[Category:Python]][[Category:ZSI]][[Category:~~VMWare~~]]		[[Category:Python]][[Category:ZSI]][[Category:VMware]]

PeterHarding: New page: =Class for handling the SOAP interface for VMware Virtual Infrastructure 3=

 """ File: VMwareVI-RetrieveProperty-Example.py Author: Werner Still  Class for handling the SOAP interfac...

2008-03-17T02:27:22Z

New page: =Class for handling the SOAP interface for VMware Virtual Infrastructure 3= <pre> """ File: VMwareVI-RetrieveProperty-Example.py Author: Werner Still Class for handling the SOAP interfac...

New page

=Class for handling the SOAP interface for VMware Virtual Infrastructure 3=

<pre>
"""
File: VMwareVI-RetrieveProperty-Example.py
Author: Werner Still

Class for handling the SOAP interface for VMware Virtual Infrastructure 3
"""

__svnid__ = '$Id: $'
__copy__ = \
"""
Copyright (c) 2007 Hitachi Data Systems GmbH.
All rights reserved.
"""
# Produce the VimServices_services.py and VimServices_services_types.py with
# wsdl2py.exe -b -f vimService.wsdl
# substitute in VimService_services_types.py
# GTD("urn:vim2","HostSystemResourceInfo",lazy=False)(pname=(ns,"child"),
# with
# GTD("urn:vim2","HostSystemResourceInfo",lazy=True)(pname=(ns,"child"),
# or
# wsdl2py.exe -l -b -f vimService.wsdl

# If it is necessary to run a second RetrieveProperties there shows a bug in the ZSI 2.0 implmentation.
# With the second run the following Error Message appears:
# Error retrieving Properties
# Error content VMwareVI NonVI Error in VMwareVI.RetrieveProperties 'list' object has no attribute '__dict__'
# This comes due to the fact that the sequencer in ZSI has a special handling for derived wsdl Messages.
# Here we use ns0.TraversalSpec_Def().pyclass() which is a derived Message from ns0.SelectionSpec_Def().pyclass()
# If this happens the minOccurs and maxOccures is set to 1. Badly enougth this runs on the orginal classes. Out
# of this a further creation of an class instance gets the modified values for minOccurs and maxOccurs. With this
# values other parts of the sequencer code will be called and this leads to the error message.
#
# A special hook within ZSI 2.0 is necessary to run with this package:
# in TCcompound.py:_get_type_or_substitute the setting of
# sub.minOccurs=1
# sub.maxOccurs=1
# has to be modified to be at least only
# sub.minOccurs = typecode.minOccurs
# sub.maxOccurs = typecode.maxOccurs
#
# Within ZSI 2.1_a1 there is a small change within TCcompound.py to copy the sub before
# modifying the Elements. The code is modified:
# from copy import copy as _copy
#
# sub = _copy(sub)
# sub.nspname = typecode.nspname
# sub.pname = typecode.pname
# sub.aname = typecode.aname
# sub.minOccurs = sub.maxOccurs = 1

import sys
import logging
from VimService_services import *
from optparse import OptionParser

class VMwareVI_Error(Exception):
"""
Exception VMwareVI_Error

This exception is used in VMwareVI Errors
"""
def __init__(self, methodName):
Exception.__init__(self)
self.__methodName = methodName

def __str__(self):
return "VMwareVI Error in " + str(self.__methodName)
class VMwareVI_NonViError(Exception):
"""
Exception VMwareVI Error not issued by Vi
"""
def __init__(self, methodName):
Exception.__init__(self)
self.__methodName = methodName

def __str__(self):
return "VMwareVI NonVI Error in " + str(self.__methodName)

class VMwareVI:
"""
This class is the main entry point into VMware VI SOAP
The creator connects to the VMware ESX or Virtual Center
All other Members use this connection
"""
ServiceContent = None
PropertyCollector = None
rootFolder = None
proxy = None
indent = 0

def __init__(self, Host=None, UserName=None, Password=None, Trace=None):
"""
Create the necessary Communication interfaces, get the ServiceInstance and log on
"""
Location = "en"
try:
loc = VimServiceLocator()
# Check if the Host Variable starts with the protocol. If not add https
if Host == None:
ConnectString = Host
elif Host.startswith('https://') or Host.startswith('http://'):
ConnectString = Host
else:
ConnectString = "https://%s/sdk" % (Host)
if Trace == None:
self.proxy = loc.getVimPortType(url = ConnectString)
else:
self.proxy = loc.getVimPortType(url = ConnectString, tracefile = Trace)

# RetrieveServiceContent
RetrieveServiceContentRequest = RetrieveServiceContentRequestMsg()
# Now create the content of the RetreiveServiceContent Request. This is a ManagedObjectReference
# The Parameter is the Instance that is needed. In this case a ServiceInstance
Element = RetrieveServiceContentRequest.new__this("ServiceInstance")
# The ManagedObjectReference needs to tell the VMware VI what type it requests. This works with
# the attribute type. Here for RetreiveServiceContent it is a type ServiceInstance.
Element.set_attribute_type("ServiceInstance")
RetrieveServiceContentRequest.set_element__this(Element)
self.ServiceContent = self.proxy.RetrieveServiceContent(RetrieveServiceContentRequest)._returnval
logging.debug("RetrieveServiceContent: response.About.FullName = %s" % (self.ServiceContent.About.FullName))
logging.debug("RetrieveServiceContent: response.SessionManager = %s" % (self.ServiceContent.SessionManager))
sessionManager = str(self.ServiceContent.SessionManager)
self.PropertyCollector = str(self.ServiceContent.PropertyCollector)
self.rootFolder = self.ServiceContent.RootFolder
RetrieveServiceContentRequest = None
except (ns0.RuntimeFault_Def), e:
#raise(VMwareVI_Error("VMwareVI.__init__ %s: %s" % (e, e.value)))
raise(VMwareVI_Error("VMwareVI.__init__ %s" % (e)))
except Exception, e:
raise(VMwareVI_NonViError("VMwareVI.__init__ %s" % (e)))

try:
# Login
LoginRequest = LoginRequestMsg()
#LoginRequest._this = LoginRequest.new__this(sessionManager)
#LoginRequest._this.set_attribute_type("SessionManager")
This = LoginRequest.new__this(sessionManager)
This.set_attribute_type("SessionManager")
LoginRequest.set_element__this(This)
LoginRequest.set_element_userName(UserName)
LoginRequest.set_element_password(Password)
LoginRequest.set_element_locale(Location)
LoginResponse = self.proxy.Login(LoginRequest)._returnval
LoginRequest = None
logging.debug("Login: response.FullName = %s" % (LoginResponse.FullName))
logging.debug("Login: response.Key = %s" % (LoginResponse.Key))
logging.debug("Login: response.UserName = %s" % (LoginResponse.UserName))
LoginResponse = None
except (InvalidLoginFault, InvalidLocaleFault, RuntimeFault), e:
raise(VMwareVI_Error("VMwareVI.__init__ %s" % (e)))
except Exception, e:
raise(VMwareVI_NonViError("VMwareVI.__init__ %s" % (e)))

def CurrentTime(self):
# CurrentTime
CurrentTimeRequest = CurrentTimeRequestMsg()
This = CurrentTimeRequest.new__this("ServiceInstance")
This.set_attribute_type("ServiceInstance")
CurrentTimeRequest.set_element__this(This)
CurrentTimeResponse = self.proxy.CurrentTime(CurrentTimeRequest)._returnval
CurrentTimeResponseString = str(CurrentTimeResponse)
logging.debug("CurrentTime: %s" % (CurrentTimeResponseString))
CurrentTimeRequest = None
CurrentTimeResponse = None
return CurrentTimeResponseString

# RetreiveProperties
def RetrieveProperties(self, propSetType=None, objectSetObj=None, AllElements=False):
try:
PropertiesRequest = RetrievePropertiesRequestMsg()
Element = PropertiesRequest.new__this(self.PropertyCollector)
Element.set_attribute_type("PropertyCollector")
PropertiesRequest.set_element__this(Element)

# We need the SpecSet Element here to get the other new() Functions
SpecSet_PropertyFilterSpec = PropertiesRequest.new_specSet()

if (propSetType == None):
propSetType = "ManagedEntity"
PropSetArray = []
PropSet = SpecSet_PropertyFilterSpec.new_propSet()
PropSet.set_element_type(propSetType)
PropSet.set_element_all(AllElements)
PropSet.set_element_pathSet(["name"])
PropSetArray.append(PropSet)

if objectSetObj == None:
objectSetObj = self.rootFolder
ObjectSetArray = []
ObjectSet = SpecSet_PropertyFilterSpec.new_objectSet()
ObjectSet.set_element_obj(objectSetObj)
ObjectSet.set_element_skip(False)
# Add the Traversal Part of the RetrieveProperties
resourcePoolTraversal = ns0.TraversalSpec_Def("resourcePoolTraversalSpec").pyclass()
resourcePoolTraversal.set_element_name("resourcePoolTraversalSpec")
resourcePoolTraversal.set_element_type("ResourcePool")
resourcePoolTraversal.set_element_path("resourcePool")
resourcePoolTraversal.set_element_skip(False)
SPCAresourcePool = []
SPCAresourcePool.append(ObjectSet.new_selectSet())
SPCAresourcePool[0].set_element_name("resourcePoolTraversalSpec")
resourcePoolTraversal.set_element_selectSet(SPCAresourcePool)

computeResourceRpTraversal = ns0.TraversalSpec_Def("computeResourceRpTraversalSpec").pyclass()
computeResourceRpTraversal.set_element_name("computeResourceRpTraversalSpec")
computeResourceRpTraversal.set_element_type("ComputeResource")
computeResourceRpTraversal.set_element_path("resourcePool")
computeResourceRpTraversal.set_element_skip(False)
SPCAcomputeResourceRp = []
SPCAcomputeResourceRp.append(ObjectSet.new_selectSet())
SPCAcomputeResourceRp[0].set_element_name("computeResourceRpTraversalSpec")
computeResourceRpTraversal.set_element_selectSet(SPCAcomputeResourceRp)

computeResourceHostTraversal = ns0.TraversalSpec_Def("computeResourceHostTraversalSpec").pyclass()
computeResourceHostTraversal.set_element_name("computeResourceHostTraversalSpec")
computeResourceHostTraversal.set_element_type("ComputeResource")
computeResourceHostTraversal.set_element_path("host")
computeResourceHostTraversal.set_element_skip(False)

datacenterHostTraversal = ns0.TraversalSpec_Def("datacenterHostTraversalSpec").pyclass()
datacenterHostTraversal.set_element_name("datacenterHostTraversalSpec")
datacenterHostTraversal.set_element_type("Datacenter")
datacenterHostTraversal.set_element_path("hostFolder")
datacenterHostTraversal.set_element_skip(False)
SPCAdatacenterHost = []
SPCAdatacenterHost.append(ObjectSet.new_selectSet())
SPCAdatacenterHost[0].set_element_name("folderTraversalSpec")
datacenterHostTraversal.set_element_selectSet(SPCAdatacenterHost)

datacenterVmTraversal = ns0.TraversalSpec_Def("datacenterVmTraversalSpec").pyclass()
datacenterVmTraversal.set_element_name("datacenterVmTraversalSpec")
datacenterVmTraversal.set_element_type("Datacenter")
datacenterVmTraversal.set_element_path("hostFolder")
datacenterVmTraversal.set_element_skip(False)
SPCAdatacenterVm = []
SPCAdatacenterVm.append(ObjectSet.new_selectSet())
SPCAdatacenterVm[0].set_element_name("folderTraversalSpec")
datacenterVmTraversal.set_element_selectSet(SPCAdatacenterVm)

folderTraversal = ns0.TraversalSpec_Def("resourcePoolTraversalSpec").pyclass()
folderTraversal.set_element_name("folderTraversalSpec")
folderTraversal.set_element_type("Folder")
folderTraversal.set_element_path("childEntity")
folderTraversal.set_element_skip(False)
SPCAfolder = []
SPCAfolder.append(ObjectSet.new_selectSet())
SPCAfolder[0].set_element_name("folderTraversalSpec")
# Add here all the other elements
SPCAfolder.append(datacenterHostTraversal)
SPCAfolder.append(datacenterVmTraversal)
SPCAfolder.append(computeResourceRpTraversal)
SPCAfolder.append(computeResourceHostTraversal)
SPCAfolder.append(resourcePoolTraversal)
folderTraversal.set_element_selectSet(SPCAfolder)

SelectionSpecArray = []
SelectionSpecArray.append(folderTraversal)
ObjectSet.set_element_selectSet(SelectionSpecArray)
ObjectSetArray.append(ObjectSet)

SpecSetArray = []
SpecSet_PropertyFilterSpec.set_element_propSet(PropSetArray)
SpecSet_PropertyFilterSpec.set_element_objectSet(ObjectSetArray)
SpecSetArray.append(SpecSet_PropertyFilterSpec)
PropertiesRequest.set_element_specSet(SpecSetArray)

PropertiesResponse = self.proxy.RetrieveProperties(PropertiesRequest)
return PropertiesResponse.Returnval
except (ns0.InvalidPropertyFault_Dec, ns0.RuntimeFault_Def), e:
raise(VMwareVI_Error("VMwareVI.RetrieveProperties %s" % (e)))
except Exception, e:
raise(VMwareVI_NonViError("VMwareVI.RetrieveProperties %s" % (e)))

def Logout(self):
# Logout
try:
LogoutRequest = LogoutRequestMsg()
sessionManager = str(self.ServiceContent.SessionManager)
This = LogoutRequest.new__this(sessionManager)
This.set_attribute_type("SessionManager")
LogoutRequest.set_element__this(This)
LogoutResponse = self.proxy.Logout(LogoutRequest)
except (RuntimeFault), e:
raise(VMwareVI_Error("VMwareVI.Logout %s" % (e)))
except Exception, e:
raise(VMwareVI_NonViError("VMwareVI.Logout %s" % (e)))

def printInventory(self, ObjectContentArray):
if ObjectContentArray == None:
print("No Managed Entities retrieved!")
else:
for ObjectContent in ObjectContentArray:
ManagedObjectReference = ObjectContent.get_element_obj()
DynamicPropertyArray = ObjectContent.get_element_propSet()
print("Object Type: " + ManagedObjectReference.get_attribute_type())
print("Reference Value: " + ManagedObjectReference )

if DynamicPropertyArray != None:
for DynamicProperty in DynamicPropertyArray:
if (DynamicProperty != None):
print(" Property Name: " + DynamicProperty.get_element_name())
if (type(DynamicProperty) == []): # We have here an array
ObjectArray = DynamicProperty.get_element_val()
for Object in ObjectArray:
print("Object: " + Object)
else:
print(" Property Value: " + DynamicProperty.get_element_val())

if __name__ == '__main__':
parser = OptionParser()
parser.add_option("-c", "--HostName", dest="Host",
help="Hostname to connect", default="localhost")
parser.add_option("-u", "--UserName", dest="UserName",
help="Username to Login", default="adm")
parser.add_option("-p", "--Password", dest="Password",
help="Password to Login", default="vmware")
parser.add_option("-d", "--Debug", dest="Debug", action="store_true",
help="Enable Debug", default=False)
parser.add_option("-f", "--DebugFile", dest="DebugFile",
help="File for Debug", metavar="FILE", default="stderr")

(options, args) = parser.parse_args()

Trace=None
if (options.Debug):
if options.DebugFile == 'stderr':
Trace=sys.stderr
else:
Trace=open(options.DebugFile, 'w')
try:
vi = VMwareVI(options.Host, options.UserName, options.Password, Trace=Trace)
except Exception, e:
print("Error initializing connection to %s %s:%s" % (options.Host,
options.UserName,
options.Password))
print("Error content %s" % (str(e)))
sys.exit(1)
try:
CurrentTime = vi.CurrentTime()
print("Current Time = %s" % (CurrentTime))
except Exception, e:
print("Error retrieving Current Time")
print("Error content %s" % (str(e)))
try:
HS = vi.RetrieveProperties(propSetType="ManagedEntity",
objectSetObj=None, AllElements=False)
# to have here the second call to RetrieveProperties will lead to an Error in
# ZSI 2.0 described on the top of the file
#HS = vi.RetrieveProperties(propSetType="ManagedEntity",
# objectSetObj=None, AllElements=False)
vi.printInventory(HS)
except Exception, e:
print("Error retrieving Properties")
print("Error content %s" % (str(e)))
try:
vi.Logout()
except Exception, e:
print("Error Logout")
print("Error content %s" % (str(e)))
</pre>

[[Category:Python]][[Category:ZSI]][[Category:VMWare]]

ZSI - VMware Interface - Revision history

PeterHarding: ZSI - VMWare Interface moved to ZSI - VMware Interface: More conventional naming

PeterHarding at 03:05, 17 March 2008

PeterHarding: New page: =Class for handling the SOAP interface for VMware Virtual Infrastructure 3=
""" File: VMwareVI-RetrieveProperty-Example.py Author: Werner Still Class for handling the SOAP interfac...