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charlie.smith avatar image
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Unable to successfully login to DACS Station SOAP API via Python Suds 1.4.5

I am trying to use the DACS Station Soap API on DACS 7.7. This DACS has been running fine with our RTDS for some time, and I now want to try automate our usage of DACS using Python on Linux. I have looked at the code examples, but when logging in, I get the following error:

from suds.client import Client
url = 'http://localhost:8080/DacsWS/DacsWebServiceService?wsdl'
client = Client(url

l = client.factory.create("dacsAdministratorLogin")
l.aAdministratorName.mAdministratorName = "reuter"
l.aAdministratorPassword.mAdministratorPassword = "<redacted>"
client.service.getDacsAdministratorDefinition(l)

output is

2024-03-19 09:59:24,805 ERROR [suds.client] <?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns0="http://dacsWebService.rfa.reuters.com/" xmlns:ns1="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <ns1:Body>
      <ns0:getDacsAdministratorDefinition>
         <loginAttribute>
            <aAdministratorName>
               <mAdministratorName>reuter</mAdministratorName>
            </aAdministratorName>
            <aAdministratorPassword>
               <mAdministratorPassword>p_reuter</mAdministratorPassword>
            </aAdministratorPassword>
         </loginAttribute>
      </ns0:getDacsAdministratorDefinition>
   </ns1:Body>
</SOAP-ENV:Envelope>
.
.
.
WebFault: b"Server raised fault: 'java.lang.NullPointerException'"

I also tried


l = client.factory.create("dacsAdministratorLogin")
l.aAdministratorName = "reuter"
l.aAdministratorPassword = "<redacted>"
client.service.getDacsAdministratorDefinition(l).aResult.mErrorText

which gets further as we don't get a 500, but we this returns `Invalid Administrator Name`


I made sure that within DACS, that I have checked the "Enable Web Service Usage" (see attached screenshot).

Does anyone have any pointers on how I can get this working? I am using Suds 1.4.5 on Python 3.8. Thanks in advance.


reuter-permissioning.png

python#technologyDACSsoap-api
reuter-permissioning.png (61.7 KiB)
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raksina.samasiri avatar image   raksina.samasiri

Hi @charlie.smith ,

Thank you for your participation in the forum. Is the reply below satisfactory in resolving your query?
If so please can you click the 'Accept' text next to the appropriate reply? This will guide all community members who have a similar question.

Thanks,
AHS

3 Answers

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Jirapongse avatar image
79.2k ●251 ●52 ●74

@charlie.smith

Thank you for reaching out to us.

I checked the DACS Web Sevices Programmer's Guide and found that the getDacsAdministratorDefinition method requires two parameters.

1710905561486.png

The code should look like this:

_dl = client.factory.create('dacsAdministratorLogin')
_dl.aAdministratorName.mAdministratorName         = dacsLogin
_dl.aAdministratorPassword.mAdministratorPassword = dacsPasswd


_dn = client.factory.create('dacsAdministratorName')
_dn.mAdministratorName = "reuter"
_adminDef = client.service.getDacsAdministratorDefinition(_dl, _dn)
print(_adminDef)

1710905561486.png (68.4 KiB)
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Upvotes
charlie.smith avatar image
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Thanks @Jirapongse. I have updated my code but I am still getting the same NullPointerException error. The transmitted XML is:


2024-03-20 08:34:16,983 ERROR [suds.client] <?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns0="http://dacsWebService.rfa.reuters.com/" xmlns:ns1="http://schemas.xmlsoap.org/soap/envelope/">
   <SOAP-ENV:Header/>
   <ns1:Body>
      <ns0:getDacsAdministratorDefinition>
         <loginAttribute>
            <aAdministratorName>
               <mAdministratorName>reuter</mAdministratorName>
            </aAdministratorName>
            <aAdministratorPassword>
               <mAdministratorPassword>redacted</mAdministratorPassword>
            </aAdministratorPassword>
         </loginAttribute>
         <adminName>
            <mAdministratorName>reuter</mAdministratorName>
         </adminName>
      </ns0:getDacsAdministratorDefinition>
   </ns1:Body>
</SOAP-ENV:Envelope>
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Jirapongse avatar image
79.2k ●251 ●52 ●74

@charlie.smith

I tested the request on SOAP UI and it works fine.

1710926200478.png

You can contact the DACS support team directly to verify if the DACS WS is working properly.


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