Create multiple suds clients pointing to the same wsdl

Question

Opening up IDLE and importing the suds Client, I can create a client by:

c = Client('http://blah/Core.svc?wsdl')

Subsequently calling:

c2 = Client('http://blah/Core.svc?wsdl')

will get me a TypeNotFound error being thrown, naming a class in the wsdl file.

I have tried:

timeout = 5 # and then waiting
cache = None

But the same error occurs. I don't mind if I cannot use the first instance, but how do I get hold of the 2nd?

I am writing tests, which will be run by a single instance of PySys, but which individually don't share data.

As an aside, when I quit() IDLE after this, it asks if I want to kill the running process, so am I correct in assuming creating a Client fires off a thread?

The error I get is:

Traceback (most recent call last):
  File "<pyshell#9>", line 1, in <module>
    c1 = Client('http://localhost:8090/Service/Core.svc?wsdl')
  File "build\bdist.win-amd64\egg\suds\client.py", line 119, in __init__
    sd = ServiceDefinition(self.wsdl, s)
  File "build\bdist.win-amd64\egg\suds\servicedefinition.py", line 58, in __init__
    self.paramtypes()
  File "build\bdist.win-amd64\egg\suds\servicedefinition.py", line 137, in paramtypes
    item = (pd[1], pd[1].resolve())
  File "build\bdist.win-amd64\egg\suds\xsd\sxbasic.py", line 63, in resolve
    raise TypeNotFound(qref)
TypeNotFound: Type not found: '(ClassName, http://schemas.datacontract.org/4004/07/Class.Namespace, )'

c.last_received() and c.last_sent() both are empty.

Going further, I looked at the log of my IIS and found that, whenever I call Client(url) for the first time in a python instance, I get:

GET /Service/Core.svc   wsdl    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd0    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd1    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd1    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd1    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd1    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6   
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6

But subsequent calls from within the same python instance give me:

GET /Service/Core.svc   wsdl    8090    -   ::1 Python-urllib/2.6
GET /Service/Core.svc   xsd=xsd0    8090    -   ::1 Python-urllib/2.6
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6
GET /Service/Core.svc   xsd=xsd1    8090    -   ::1 Python-urllib/2.6
GET /Service/Core.svc   xsd=xsd2    8090    -   ::1 Python-urllib/2.6
GET /Service/Core.svc   xsd=xsd3    8090    -   ::1 Python-urllib/2.6

The size of the response is the same each time a certain file is requested.

this error certainly implies that the second call to your service is not returning the same wsdl. — olly_uk, Sep 11 '12 at 09:14
If I get a client, restart the IDLE shell and get the client again, everything is fine. The issue only occurs when the called twice from the same shell. — Peter, Sep 11 '12 at 10:32

score 1 · Answer 1 · edited May 23 '17 at 10:34

This may be an issue elsewhere (i.e. with the service providing the WSDL) as i can not reproduce either in IDLE or python command shell or script (i am using windows) when using a SOAP service.

could you provide the exact error, the version of suds and the actual URL to the WSDL in question?

The below output is the same regardless of how i try.

>>> from suds.client import Client
>>> c1 = Client('http://vocab.nerc.ac.uk/vocab2.wsdl')
>>> c2 = Client('http://vocab.nerc.ac.uk/vocab2.wsdl')
>>> c1
<suds.client.Client object at 0x022AE230>
>>> c2
<suds.client.Client object at 0x022CCDB0>
>>>

EDIT:

with regard to the notice on quitting IDLE that occurs even if you have run no code in IDLE and then type quit() to close

EDIT 2:

Try debugging this by using some of the techniques mentioned here (both last_sent and logging)

I'm having a hard time tracking down issues with the wsdl file. Is there any way to wipe all of the persistence from the first client created? — Peter, Sep 11 '12 at 10:25
i'm not %100 sure but i think the only caching is stopped when you apply `c1 = Client('wsdl_url', cache=None)` when creating the client — olly_uk, Sep 11 '12 at 10:44

Wagner Cipriano · Answer 2 · 2018-01-26T13:01:57.190

0

This error does not arise in the suds default. This appear after apply this patch below:

recurselevel-schema.py.patch https://github.com/sandersnewmedia/suds/blob/master/suds/xsd/recurselevel-schema.py.patch

in the file /suds/xsd/schema.py

This patch solve the "recursive level schema error" but cause error when do you need to work with multiple suds clients pointing to the same wsdl.

edited Jan 26 '18 at 13:01

answered Jan 25 '18 at 17:57

Wagner Cipriano

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Create multiple suds clients pointing to the same wsdl

2 Answers2