Delete grpclog's Debugf function

[dfawley]

grpc-go/internal/grpclog/prefixLogger.go

Line 65 in 9cf408e

func (pl *PrefixLogger) Debugf(format string, args ...any) {

If a parameter passed to these functions is expensive to evaluate, that expense is borne regardless of whether verbosity would output the message .

All usages should be audited, and we should write another function that allows the arguments to be processed lazily (i.e. pass in closures).

[dfawley]

write another function that allows the arguments to be processed lazily (i.e. pass in closures).

Upon further consideration, I don't think this was a good suggestion.

[atollena]

The alternative would be to eliminate prefixlogger Debugf method (which is internal) method and favor Infof gated by if logger.V(2) {}, like we do in most places. The problem is that PrefixLogger doesn't have a V method, and neither has its DepthLogger member.

[dfawley]

Yes, that's what I was thinking, too. We could add this method -- worst case, the PrefixLogger can expose it and just call the global logger like it's doing today.