Using python in Cloverleaf

[Ramachandran R]

We have a requirement to send a message to an external REST API, where it accepts only (Content-Type: multipart/form-data; boundary=—-<unique ID>). I understand that we can use PROTOCOL:java/ws-rawclient, however forming of data is what makes it complex, as it requires the data in multipart/form-data; boundary=—-<unique ID> format.

So we have decided to build an adopter to send the data to external API using python3, and tried with the below simple code in outbound TPS,

def process_qlm_multipart(cloverEnv, context, mode, msg, userArgs, dl):

    hciConnName = cloverEnv.getThreadName()

    if mode == “run”:

        messageContent = msg.getContent()

        cloverEnv.log(2, f”messageContent: {messageContent}”)

import sys

        cloverEnv.log(2, f”{sys.path}”)

        import http.client

        from codecs import encode

        conn = http.client.HTTPSConnection(“URL Comes Here”)

But getting the below error

[‘/usr/lib64/python38.zip’, ‘/usr/lib64/python3.8’, ‘/usr/lib64/python3.8/lib-dynload’, ‘/home/hci/.local/lib/python3.8/site-packages’, ‘/usr/lib64/python3.8/site-packages’, ‘/usr/lib/python3.8/site-packages’, ‘/cloverleaf/cis20.1/integrator/python’]

 Tcl error:

     msgId   = message0

     proc    = ‘cljTPS’

     args    = ‘{CLASS ScriptTPS} {LANG jep} {FILE process_qlm_multipart.py} {FUNC process_qlm_multipart}’

     result  = ‘com.quovadx.cloverleaf.upoc.CloverleafException: Failed in running UPoC due to Jep exception’

     errorInfo: ‘

 com.quovadx.cloverleaf.upoc.CloverleafException: Failed in running UPoC due to Jep exception

     at JepUpocEngine.run(JepUpocEngine.java:296)

     at ScriptTPS.process(ScriptTPS.java:58)

     at com.quovadx.cloverleaf.upoc.CloverEnv.processTPS(CloverEnv.java:1418)

 Caused by: jep.JepException: <class ‘ImportError’>: /usr/lib64/python3.8/lib-dynload/binascii.cpython-38-x86_64-linux-gnu.so: undefined symbol: PyExc_ValueError

     at /usr/lib64/python3.8/email/header.<module>(header.py:14)

     at /usr/lib64/python3.8/email/_policybase.<module>(_policybase.py:7)

     at /usr/lib64/python3.8/email/feedparser.<module>(feedparser.py:27)

     at /usr/lib64/python3.8/email/parser.<module>(parser.py:12)

     at /usr/lib64/python3.8/http/client.<module>(client.py:71)

     at /cloverleaf/cis20.1/integrator/sfin3/scripts/process_qlm_multipart.process_qlm_multipart(process_qlm_multipart.py:32)

     at <string>.<module>(<string>:1)

     at jep.Jep.exec(Native Method)

     at jep.Jep.exec(Jep.java:478)

     at JepUpocEngine.run(JepUpocEngine.java:290)

     … 2 more

     invoked from within

 “processTPS “$instanceMap($__userArgs) $context $mode $mh””

     (procedure “cljTPS” line 49)

     invoked from within

 “cljTPS {MSGID message0} {CONTEXT sms_ob_data} {ARGS {{CLASS ScriptTPS} {LANG jep} {FILE process_qlm_multipart.py} {FUNC process_qlm_multipart}}} {MODE…”‘

We are using Cloverleaf 20.1.2, on RHEL 8.6, and python3.8

The above error is raised exactly at import http.client. I can see that this package is already available with python3.8.

Any help/lead in fixing the above issue would be greatly appreciated.

Thank you.

Topic

[Ramachandran R]

I just made it work in our Cloverleaf 20.1.3.  Just for the documentation, provided below the steps,

Please download and try with the cpython from https://github.com/indygreg/python-build-standalone/releases/download/20230826/cpython-3.8.17+20230826-x86_64-unknown-linux-gnu-install_only.tar.gz

Unzip the package (assuming the path is $PYTHON_PATH) and add $PYTHON_PATH/bin to $PATH, add $PYTHON_PATH/lib to $LD_LIBRARY_PATH

Validate which Python is being used by hci user, it needs to be the path you had just set up.

You may need to install all the Python packages again and try from Cloverleaf

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