Re: [Fedora-suds-list] Dealing with exceptions from the web services

[Jeff Ortel]

On 05/27/2010 08:21 AM, Donald W. Long wrote:
>  more data.  Below is the log output from client
>  DEBUG:suds.client:sending to (http://kwweb01:8080/SAWebService.asmx)
>  message:
>  <SOAP-ENV:Envelope
>  xmlns:ns0="http://www.qualcomm.com/QCT/QSWAT/SAWebService"
>  xmlns:ns1="http://schemas.xmlsoap.org/soap/envelope/
>  " xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
>  <SOAP-ENV:Header/>
>  <ns1:Body>
>  <ns0:GetBuildLocation>
>  <ns0:BuildID></ns0:BuildID>
>  </ns0:GetBuildLocation>
>  </ns1:Body>
>  </SOAP-ENV:Envelope>
>  DEBUG:suds.client:headers = {'SOAPAction':
>  u'"http://www.qualcomm.com/QCT/QSWAT/SAWebService/GetBuildLocati...;,
>  'Content-Type': '
>  text/xml'}
>  DEBUG:suds.client:http succeeded:
>  <?xml version="1.0" encoding="utf-8"?><soap:Envelope
>  xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
>  xmlns:xsi="http://www.
>  w3.org/2001/XMLSchema-instance"
>
> xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body&g...
>
> <http://www.w3.org/2001/XMLSchema"><soap:Body><soap:Fault...
>  ode><faultstring>Server was unable to process request. ---&gt; Build ID
>  cannot be empty</faultstring><detail /></soap:Fault></soap
>  :Body></soap:Envelope>
>  When I look at the xml returned I sse the faultcode as soap:Server. Is
>  this a correct web fault xml item? Also, how do I get to the
>  <faultstring> area, if I can do this I could find out what the error is. 
Yes, this appears to be a valid web fault.  If the server is not returning http code = 
500, you will need to use 0.4.  In 0.4, suds will raise an exception even if the http code

= 200 if the <soap:Fault/> is present.  After you catch the exception, you can
inspect to 
see what happened:

except WebFault f:
   print 'code=%s, string=%s' % (f.fault.faultcode, f.fault.faultstring)

>  Thanks
>  Donald W. Long
>  Email: Donald.W.Long(a)thelongsfamily.com
>  Skype: Donald.W.Long
>
>  ------ Original Message ------
>  From: "Donald W. Long" <donald.w.long(a)gmail.com&gt;
>  To: suds(a)lists.fedoraproject.org
>  Sent: 5/26/2010 2:25:48 PM
>  Subject: Dealing with exceptions from the web services
> > Message: 3
> > Date: Tue, 25 May 2010 10:43:09 -0800
> > From: "Joshua J. Kugler" <joshua(a)eeinternet.com&gt;
> > Subject: Re: [Fedora-suds-list] Dealing with exceptions from the web
> > services
> > To: suds(a)lists.fedoraproject.org, "Donald W. Long"
> > <donald.w.long(a)gmail.com&gt;
> > Message-ID: <201005251043.09590.joshua(a)eeinternet.com&gt;
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > On Tuesday 25 May 2010, Donald W. Long elucidated thus:
> >> I found that if the service returns a string value and the service
> >> throws an exception i can look at the result and it will contain
> >> 'soap:Server', but if the service returns void then you can not tell
> >> if you have an error or not.
> >>
> >>
> >> But what I am really trying to figure out, is how do you see what
> >> exception the service has thrown.
> >>
> >> You may noticed that I am using the WindowsHttpAuthenticated, this is
> >> required for access to the server that is running the web services.
> >
> > If you are not seeing a suds.WebFault raised then the service is not
> > raising a SOAPFault, and thus is returning error information to you
> > other ways. If the service does not raise a SOAPFault on errors, then
> > you will have to wrap the call and raise an exception if an error
> > condition is returned.
> > I understand the above but we did a test with C#, below is some of the
> > code and we get a soap error.
> > public partial class _Default : System.Web.UI.page
> > {
> > protected void Page_load(object sender, EventArgs e)
> > {
> > SAWebServices ws = new SAWebService();
> > try
> > {
> > ws.GetBuildLocation(string.Empty);
> > }
> > catch (SoapException se)
> > {
> > Response.Write(se.Detail);
> > }
> > }
> > }
> > the above code will get a SoapException if an empty string is sent to
> > GetBuildLocation. The service is written in .NET ASP. From what I have
> > been told, Microsoft always converts the exception into a Soap
> > Exception. When we also use perl we get an exception for the client
> > code but not using python and suds. Should the SoapException be
> > something else?
> > We are at a loss on this one and not sure how to continue using suds
> > with Python. Given all other languages that we use, C# and perl we get
> > an exception from it. With Python and suds we only get a string that
> > says Soap:Server.
> > What type of exception should we throw for the web service, and what I
> > do not understand is given all these other languages and packages
> > work, what is the difference between suds and what they are doing.
> > Most of the developers in my area feel that suds is not handling
> > exceptions correctly, me, I am not sure, I am new at soap.
> > If you have any recommendations on what we should do then please let
> > us know. We would really like to move to Python and suds.
> > Have a nice day
> > Donald W. Long
> > Email: Donald.W.Long(a)thelongsfamily.com
> > Skype: Donald.W.Long
>
>
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