Fixing bug with new Avro conversion when message values are NULL

[passuied]

Description

Fixing bug with new Avro conversion when message values are NULL

Issue reference

#3387

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation - N/A

[passuied]

@yaron2 These certification tests are really brittle. I doubt my changes have caused rabbitmq and mqtt3 tests to fail... Any path forward other than retrying these tests over an over? Should they be skipped until made more resilient?

[passuied]

The current issue in cert tests seems realted to a certificate issue:

failed to verify certificate: x509: certificate has expired or is not yet valid

I remember this was an issue previously due to some certificates being hardcoded in tests and expiring...

Yeah these hard-coded certs have expired... https://github.com/dapr/components-contrib/blob/main/tests/certification/bindings/rabbitmq/mtls_sasl_external/components/mtls_external/rabbitmq-mtls.yaml

[ItalyPaleAle]

Small changes

[passuied]

The current issue in cert tests seems realted to a certificate issue:

failed to verify certificate: x509: certificate has expired or is not yet valid

I remember this was an issue previously due to some certificates being hardcoded in tests and expiring...

Yeah these hard-coded certs have expired... https://github.com/dapr/components-contrib/blob/main/tests/certification/bindings/rabbitmq/mtls_sasl_external/components/mtls_external/rabbitmq-mtls.yaml

@ItalyPaleAle how should we deal with these certification errors due to certs having expired. They've been failing since Feb... In the past, you figured out a way to generate certs as part of the test (though I cannot find the code anymore)...

[ItalyPaleAle]

@ItalyPaleAle how should we deal with these certification errors due to certs having expired. They've been failing since Feb... In the past, you figured out a way to generate certs as part of the test (though I cannot find the code anymore)...

That's for RabbitMQ not Kafka, right? If you want to contribute a PR to fix that, it'd be nice :)

I think accepting hardcoded certs was a mistake. We should have generated the certs on-the-fly.

[passuied]

@ItalyPaleAle how should we deal with these certification errors due to certs having expired. They've been failing since Feb... In the past, you figured out a way to generate certs as part of the test (though I cannot find the code anymore)...

That's for RabbitMQ not Kafka, right? If you want to contribute a PR to fix that, it'd be nice :)

I think accepting hardcoded certs was a mistake. We should have generated the certs on-the-fly.

Don't really have the time right this minute but would like my PR to go through quickly as we're eager to use the feature. I can try to contribute later but I'm struggling to run these tests locally...

[ItalyPaleAle]

I am not concerned with the RabbitMQ tests failing in this PR. If Kafka tests pass, we can merge