RFR: 8303682: Simplify HttpClient DebugLogger

[Jaikiran Pai]

On Tue, 7 Mar 2023 10:16:24 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

> The HttpClient internal DebugLogger could be simplified if its configuration was held in a record. Some of the methods in Utils that return a debug logger could also be simplified/removed. The system property that configures the debug logging could be extended to choose between System.err, System.out, System.Logger, or any of these configurations.
> Passing -Djdk.internal.httpclient.debug=true still works as before.

src/java.net.http/share/classes/jdk/internal/net/http/common/DebugLogger.java line 59:

> 57:      *                printed to {@link System#err}
> 58:      * @param logLevel the level above which messages will be forwarded
> 59:      *               to an underlying {@link System.Logger}

Hello Daniel, looking at the code, it appears to me that the documentation of all these three levels should say "the level above or equal to which ..." (i.e. `>=` instead of `>`).

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PR: https://git.openjdk.org/jdk/pull/12900