[Bug] Should force UTF-8 encoding in `JsonLogHandler` of `kafka-fetcher-plugin`.

[wu-sheng]

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• I had searched in the issues and found no similar issues.

Apache SkyWalking Component

OAP server (apache/skywalking)

What happened

    @Override
    protected LogData parseConsumerRecord(ConsumerRecord<String, Bytes> record) throws IOException {
        LogData.Builder logDataBuilder = LogData.newBuilder();
        ProtoBufJsonUtils.fromJSON(new String(record.value().get(), StandardCharsets.UTF_8), logDataBuilder);
        return logDataBuilder.build();
    }

This should be the correct way to decode byte[] from Kafka

What you expected to happen

Some one reported this through QQ discussion group in CN.

The original reported agree to submit this fix after he/she tested, I opened this issue for tracking the progress.

How to reproduce

The current code only supported ascii chars. Chinese chars or others out of ascii would be decoded incorrectly.

Such as "body":{"text":{"text":"\"test\""}} -> "body":{"text":{"text":"\x5C"test\x5C""}}

Anything else

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct