How to add common custom fields to logs without having to specify for each log statement?

[sivaprasadreddy]

I would like to add some common fields(app running environment, region etc) which are available on application startup and won't change. Instead of adding the env and region for each log statement as follows, I would like to configure somehow while instantiating zap.Logger:

logger.Infow("some message here", zap.String("env", "prod"), zap.String("region", "us-east-1"))

Is there a way to configure common key-value pairs like this?

[sivaprasadreddy]

As often happens, I found the solution just after posting the question.

logger := zap.New(core, options...).With(
    zap.String("env", cfg.Environment),
    zap.String("env", cfg.Region),
).Sugar()