marshal logs and metrics with json for print #1079
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I was wondering for a long time why msgid is marshalled as a string, while it's defined as int64. Turns out that protojson.Marshal converts all int64 to string according to the protobuf spec.
I find this peculiar, so I decided to use json.Marshal instead. We'll only use this for printing, to avoid compatibility issues.
As can be seen here it's a known issue and is by design.