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You should use

py

instead of

jar

for Python functions to specify the artifact name. The Pulsar function framework uses that field to decide which runtime environment is needed to run the function. jar = java, py = python

@David K the Pulsar Function Im using is a Java function, hence the jar file path.

You need to provide a file path for the actual function’s jar. An example would be like this one

# File path
file_path = "/Users/mingluo/function.jar"

# Make the request
response = requests.post(
    url,
    headers=headers,
    files={'data': open(file_path, 'rb')},
    data={'functionConfig': json.dumps(function_config)}
)

@Ming isnt that provided in the

jar

field in the functionConfig?

You need to provide a path to upload the jar from a http client to the http server (namely the function worker). Pulsar function uses multi-part upload that requires the

data

part. There is a built-in function which you don’t need upload a function. I am not sure if you refer to the built-in function. sorry, this is from a curl working example I have that I convert to Python. It looks like the same path may need to provide twice. can you try?

@Ming apologies, I might not be understanding this correctly. My Python script (HTTP Client) which creates the REST request to create a function resides in a separate container, and my JAR file for the Pulsar Function already resides within the broker pod/container. So I can not send the JAR file as part of the request from the Client. I did come across this, and I was wondering if I have to maybe “upload” the JAR file to the function and then run my REST request. I did try this out and it did not work for me. Getting the same error as before, i.e.

Function package is not provided

Have you tried to get a curl command work first? Then convert the curl to a python call

I haven’t, let me try that out. Would I still need to pass the jar as part of the file even if it already resides in the server?

You do

but the path would be the path of the JAR within the broker container?

Yes, it would be the full path name of the jar file

@Ming RE: Conversation above, I am trying to use a builtin function now called

generic-stream-function

. I am unclear on how to use this without having to upload the function. Having to upload the function would defeat the purpose. Can you share the structure of the REST call for this or guide me to the documentation covering this?