mcp: use golang.org/x/time/rate for LoggingHandler rate limiting (#927)

Replaces the simple time-interval check in `LoggingHandler` with a
standard `rate.Limiter` from `golang.org/x/time/rate`, as suggested by
the existing TODO comment.

This provides a well-tested implementation and removes the need for
manual `lastMessageSent` tracking. The rate (`1/MinInterval`) and burst
(1) match the previous behavior exactly.

/cc @jba

Closes #924

---------

Signed-off-by: wucm667 <stevenwucongmin@gmail.com>
Co-authored-by: Jonathan Amsterdam <jba@users.noreply.github.com>
Co-authored-by: Maciej Kisiel <mkisiel@google.com>
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wucm667 2026-05-06 16:31:01 +08:00 • committed by GitHub
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@ -14,5 +14,7 @@ golang.org/x/oauth2 v0.35.0 h1:Mv2mzuHuZuY2+bkyWXIHMfhNdJAdwW3FuWeCPYN5GVQ=
golang.org/x/oauth2 v0.35.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
golang.org/x/time v0.15.0 h1:bbrp8t3bGUeFOx08pvsMYRTCVSMk89u4tKbNOZbp88U=
golang.org/x/time v0.15.0/go.mod h1:Y4YMaQmXwGQZoFaVFk4YpCt4FLQMYKZe9oeV/f4MSno=
golang.org/x/tools v0.42.0 h1:uNgphsn75Tdz5Ji2q36v/nsFSfR/9BRFvqhGBaJGd5k=
golang.org/x/tools v0.42.0/go.mod h1:Ma6lCIwGZvHK6XtgbswSoWroEkhugApmsXyrUmBhfr0=