How to make Protbuf work with Confluent Schema registry

[suchitgupta01]

I am using Kafdrop docker image and we are exploring Protbuf format.

I see Kafdrop do support Protbuf but not sure how it can work with Confluent schema registry.

The schema is defined in Confluent and have posted a messages but I am getting an error message "No available descriptor, please check."

Going through the docs look like we need to define the location of proto files. But keeping all the proto files in one place might not be a case for us, so question is can't it get the schema from Confluent Schema registry?

[ctrongduc]

At the time we build protobuf support it was not supported by shema registry, thus it's not a built in feature.
Need to change code to get it worked with schema registry.

[suchitgupta01]

@ctrongduc Got it. thanks!! Is this planned for the future?

[ctrongduc]

nothing planned yet, I could have a look and see what is the needed effort for this feature.

[simsibimsiwimsi]

Hi @ctrongduc I did not see the issue before I started to take care of the feature as I need it myself. I have the code needed in place and would be happy to contribute it. Basically I added an additional Deserializer similar to AvroMessageDeserializer and adjusted MessageController to use it if no Protobuf Descriptor file is supplied.

[baganokodo]

Hi @ctrongduc I did not see the issue before I started to take care of the feature as I need it myself. I have the code needed in place and would be happy to contribute it. Basically I added an additional Deserializer similar to AvroMessageDeserializer and adjusted MessageController to use it if no Protobuf Descriptor file is supplied.

Hi @simsibimsiwimsi could you share your code? I am facing the exact same challenge today.

Thank you

[simsibimsiwimsi]

Hi @ctrongduc I did not see the issue before I started to take care of the feature as I need it myself. I have the code needed in place and would be happy to contribute it. Basically I added an additional Deserializer similar to AvroMessageDeserializer and adjusted MessageController to use it if no Protobuf Descriptor file is supplied.

Hi @simsibimsiwimsi could you share your code? I am facing the exact same challenge today.

Thank you

Hi @baganokodo - already done in #225

[baganokodo]

The PR is merged, should this ticket be closed?