suds April 2009

suds@lists.fedoraproject.org

11 participants
12 discussions

patch for complextypes contains unbounded literals
by ariel backenroth 30 Apr '09

30 Apr '09

hi, i ran into a problem with the suds client posting to actions that contain as a parameter a complexType containing an unbounded literal. a snippet of the schema looks like this: (from http://pastebin.com/f14bdb39c) <s:element name="SendDocument"> <s:complexType> <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="sessionKey" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="recipientIds" type="tns:ArrayOfInt" /> </s:sequence> </s:complexType> </s:element> <s:complexType name="ArrayOfInt"> <s:sequence> <s:element minOccurs="0" maxOccurs="unbounded" name="int" type="s:int" /> </s:sequence> </s:complexType> the python code i was using to post this is (from http://pastebin.com/f5e256230) : def send_discussion_notification(self) recipient_ids = self._make_wrapper("ArrayOfInt", int=[4, 5]) result = self._client.service.SendDocument(self._session_key, recipient_ids) assert result, result return result def _make_wrapper(self, wrapper_name, **kwds): thing = self._client.factory.create(wrapper_name) for k, v in kwds.iteritems(): setattr(thing, k, v) return thing the issue i was having is that it was treating ArrayOfInt.int as a primitive and ignoring the unbounded="true" and serializing it as: <recipientIds><int>[4, 5]</int> rather than: <recipientIds><int>4</int><int>5</int></recipientIds> what fixes this is a patch to suds.xsd.sxbasic.py. at the beginning of TypedContent.resolve i added a line: nobuiltin = nobuiltin or self.unbounded() there might be a more general way to address this issue, but if someone could please integrate a patch along these lines, it would be greatly appreciated. btw - i attempted to file an issue in trac for this but could not figure out where to create a new ticket... thanks, ariel

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SharePoint <Any> element
by Steve Chernyak 27 Apr '09

27 Apr '09

I'm running into problems using sharepoint soap API. This is my first time working with python, so I could be totally wrong. However, it seems that there is a bug in how SUDS handles attributes when the schema is defined by "any". Here is the relative part of the schema: <s:element name="GetListItemsResponse"> <s:complexType> <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="GetListItemsResult"> <s:complexType mixed="true"> <s:sequence> <s:any /> </s:sequence> </s:complexType> </s:element> </s:sequence> </s:complexType> </s:element> And here is the relative part of the response: <GetListResult> <List DocTemplateUrl="" EmailInsertsFolder="" > .... This fails with: DEBUG:suds.resolver:searching parent (<Any:0x12fed28 />) for (@EmailInsertsFolder) Traceback (most recent call last): File "C:\development\IDEs\eclipse\workspace\cgi\sharepoint2jira\src\synch\sharepoint2jira.py", line 13, in <module> list = client.service.GetList(listName='Issues List') File "C:\development\python\python-suds-0.3.5\suds\client.py", line 240, in __call__ return target.call(*args, **kwargs) File "C:\development\python\python-suds-0.3.5\suds\client.py", line 379, in call return method(*args, **kwargs) File "C:\development\python\python-suds-0.3.5\suds\client.py", line 240, in __call__ return target.call(*args, **kwargs) File "C:\development\python\python-suds-0.3.5\suds\client.py", line 422, in call return client.invoke(args, kwargs) File "C:\development\python\python-suds-0.3.5\suds\client.py", line 480, in invoke result = self.send(msg) File "C:\development\python\python-suds-0.3.5\suds\client.py", line 505, in send result = self.succeeded(binding, reply.message) File "C:\development\python\python-suds-0.3.5\suds\client.py", line 537, in succeeded r, p = binding.get_reply(self.method, reply) File "C:\development\python\python-suds-0.3.5\suds\bindings\binding.py", line 149, in get_reply result = unmarshaller.process(nodes[0], resolved) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 302, in process return UMBase.process(self, content) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 87, in process data, result = self.append(content) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 103, in append self.append_children(content) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 180, in append_children cdata, cval = self.append(cont) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 102, in append self.append_attributes(content) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 156, in append_attributes self.append_attribute(name, value, content) File "C:\development\python\python-suds-0.3.5\suds\bindings\unmarshaller.py", line 389, in append_attribute type = self.resolver.findattr(name) File "C:\development\python\python-suds-0.3.5\suds\resolver.py", line 364, in findattr result, ancestry = self.getchild(name, parent) ValueError: need more than 0 values to unpack I was able to trace it down to the Any class in sxbasics.py returning self from get_attribute (which fails to unpack into 2 variables?) Changing the return to (None, []) fixes the problem, but I'm not sure if that's the correct fix or I'm just doing something wrong. Thanks

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WSSE enhancements ready to merge
by Michael Schurter 23 Apr '09

23 Apr '09

My BitBucket repository holds some changes I had to make to the WSSE support to get suds working with a proprietary SOAP service. Would love to have it reviewed and merged. Its not the prettiest code, but it does make a SOAP service work for me that currently only works with Java and .Net clients. http://bitbucket.org/schmichael/suds-timestamp/overview/ Thanks! Michael Schurter

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Multi-threading question
by Michael_Taylor＠playstation.sony.com 22 Apr '09

22 Apr '09

Hi suds mailing list, My question is if the suds library is thread safe or not. Specifically, I thinking of the following scenario. A singleton instance of a class SOAPClient is created in a multi-threaded server, and upon initialization the class creates a sud Client that it maintains a reference to in an instance variable. The suds Client would then be used across SOAPClient methods, which are being invoked by multiple threads (whose creation is driven by user requests). The reason I am considering this design is that it eliminates the need to reprocess the wsdl (ie client = Client(url)) for every request. My question is whether or not this usage pattern is safe. (I've googled around for thread safety issues with urllib2, and as far as I can tell urllib2 itself is thread safe, but I'm wondering if such thread safety extends to suds). I'd also be interested in hearing if such an optimization is in your opinion even warranted (Another idea I'm considering is using thread locals to bind a Client instance to a thread, thus allowing for thread safety but still cutting down the parsing suds is forced to do). Thanks for your time, Mike Taylor

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Suds sending GETs instead of POSTs
by Michael Schurter 21 Apr '09

21 Apr '09

Running my modified fork of suds trunk/default, and according to the SOAP interface provider, suds is sending GET requests instead of POSTs for invoking methods. Obviously GETting the WSDL is fine, but the sysadmin sent me these log messages: [20/Apr/2009:19:07:38 -0400] "GET /edatafeed/EDataFeed?wsdl HTTP/1.1" 200 78058 [20/Apr/2009:19:08:39 -0400] "GET /edatafeed/EDataFeed HTTP/1.1" 500 227 [20/Apr/2009:19:09:00 -0400] "GET /edatafeed/EDataFeed HTTP/1.1" 500 227 [20/Apr/2009:19:09:36 -0400] "GET /edatafeed/EDataFeed HTTP/1.1" 500 227 [20/Apr/2009:19:13:12 -0400] "GET /edatafeed/EDataFeed HTTP/1.1" 500 227 [20/Apr/2009:19:23:45 -0400] "GET /edatafeed/EDataFeed HTTP/1.1" 500 227 I added the following patch to suds/transport/http.py to get more logging and it reports POST as expected: diff -r 57b4aebd6109 suds/transport/http.py --- a/suds/transport/http.py Mon Apr 20 19:16:18 2009 -0700 +++ b/suds/transport/http.py Tue Apr 21 12:17:10 2009 -0700 @@ -74,6 +74,7 @@ self.__addcookies(u2request) self.__setproxy(url, u2request) request.headers.update(u2request.headers) + log.debug('method: %s', u2request.get_method()) log.debug('sending:\n%s', request) fp = self.__open(u2request) self.__getcookies(fp, u2request) I'm not sure I follow all that code, but I don't understand how the request somehow becomes a GET *after* that line. I'm setting up a SOAP client service with WSSE and a username/password and just calling: c.service.someGetter() Any ideas? (Using Ubuntu and Python 2.6.2)

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WS-Security
by Michael Schurter 21 Apr '09

21 Apr '09

Hi all, I've only dabbled in SOAP a bit over the years and once again find myself needing to access some data via SOAP interfaces. These interfaces require WS-Security including the Security Timestamp feature.[1] I've begun implementing it in a fork on BitBucket[2], but so far I've had no luck against the interface (which is unfortunately not public). So I have a couple questions for the community: 1. Is anyone else interested in WS-Security or at least willing to look over my code and hopefully get it merged? 2. Is there a public SOAP service that implements WS-Security (including Timestamps) for me to test against? Otherwise I suppose I'll need to setup Apache Axis. I do know the service I'm trying to access is implemented on top of Apache Tomcat 6.0, but I doubt thats useful information. Thanks! Michael Schurter Twitter, IRC, and just about everywhere else: schmichael [1] http://www.oasis-open.org/committees/download.php/21257/wss-v1.1-spec-errat… [2] http://bitbucket.org/schmichael/suds-timestamp/

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Pseudo-pickling
by Jesper Nøhr 21 Apr '09

21 Apr '09

Hi list, I had an issue today where I needed to pickle a suds object. This is clearly not possible using pickle by itself, and I couldn't get copy_reg to dance either. In the end, I ended up writing: from suds.sudsobject import asdict, Object def suds_pickle(sobject): begin = asdict(sobject) for key, value in begin.iteritems(): if isinstance(value, Object): begin[key] = suds_pickle(value) return begin def suds_unpickle(fact, klass, dct): inst = fact.create(klass) def fill(dct, pnt): for key, value in dct.iteritems(): if isinstance(value, dict): fill(value, getattr(pnt, key)) else: setattr(pnt, key, value) fill(dct, inst) return inst Maybe someone will find it useful. suds_pickle returns a dict'ed version of an object recursively, and suds_unpickle takes 3 args: a factory, instance name and the dictionary from before. It worked well enough for my purpose, but may need some improvement for larger things. HTH, Jesper Noehr

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How to handle enumerations
by Sean Murray 16 Apr '09

16 Apr '09

Hi, I've read through the documentation, and looked through google, but can't seem to pinpoint an answer to this. I'm trying to select an enumeration in this xml, but when using the client.service.getResourceByCategory as described in the docs, I get an error stating the following Traceback (most recent call last): File "GWsyncSOAP.py", line 276, in ? test = gw.testMah() File "GWsyncSOAP.py", line 262, in testMah self.client.service.getResourceByCategory() File "/root/devel/gwsync/lib/suds/client.py", line 240, in __call__ return target.call(*args, **kwargs) File "/root/devel/gwsync/lib/suds/client.py", line 378, in call method = self.resolve(self.name(), strict=False) File "/root/devel/gwsync/lib/suds/client.py", line 332, in resolve raise MethodNotFound(name) suds.MethodNotFound: Method not found: 'getResourceByCategory' The code used is as follows: FilterOp = self.client.factory.create('ns2:FilterOp') self.client.service.getResourceByCategory(FilterOp.and) The specifications for FilterOp are the following: http://developer.novell.com/documentation/gwsoap/gwwbserv/index.html?page=/… Thank you so much for the help, this has been driving me crazy!!!

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suds.TypeNotFound
by Daniel Bjerre 09 Apr '09

09 Apr '09

I just want to reiterate a problem detailed in tickets 220, 210 when using suds 0.35. I get the following error when setting up a client for various EBI resources: suds.TypeNotFound: Type not found: '(Array, http://schemas.xmlsoap.org/soap/encoding/, )' These resources include: http://www.ebi.ac.uk/Tools/webservices/wsdl/WSDaliLite.wsdl and http://www.ebi.ac.uk/Tools/webservices/wsdl/WSNCBIBlast.wsdl I tried the tips and tricks 'Import.bind' and I tried to change a local copy of these wsdl to include an <xsd:import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>. Neither worked, and I find it hard to believe that the European Bioinformatics Institute is producing malformed wsdls. Any additional ideas? Has this been fixed in the development tree? Thanks. Daniel -- Daniel Bjerre Graduate Student in Molecular Biophysics Varani Lab Biochemistry Department University of Washington office: Bagley 63B mail: Box 351700

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Re: [Fedora-suds-list] Suds with PyCurl
by Michael Sommerville 07 Apr '09

07 Apr '09

On Mon, Apr 6, 2009 at 5:39 PM, Good Z <goodz158(a)yahoo.com> wrote: > On Sun, Apr 5, 2009 at 8:02 AM, Good Z <goodz158(a)yahoo.com> wrote: >> Hello All, >> >> I am using Python2.4 for my project. Unfortunately the httplib with that >> does not works well with HTTPS sites. As a result SUDS does not work. The >> same program works well with Python 2.6. >> >> I wonder, is there any way I can use Suds with PyCurl or any other HTTP >> transport that works well with Python2.4. > > A while back David Norton very helpfully wrote up a article on getting > httplib to work. This works well for me connecting to our gsoap > service over HTTPS, albeit using Python 2.5. Perhaps this might be of > some help? > > The article is available at: > http://www.threepillarsoftware.com/soap_client_auth > > Need one more favour. The code ask for 'keyFileName' and 'certFileName', how > do i get them for third party website. Yes that tripped me up too. What you are doing is establishing *your* identity to the remote service. For this purpose you can simply generate a self signed cert, as David points out in his write up, there is no checking that the cert is signed by a known CA. For some examples, try this link: http://www.akadia.com/services/ssh_test_certificate.html Regards, -Michael

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suds April 2009