Can’t you just deprecate java.util.logging? While I am half kidding, can someone explain why it doesn’t use a ServiceLoader to locate the LogManager implementation?
Ralph > On Nov 10, 2017, at 9:04 AM, Daniel Fuchs <daniel.fu...@oracle.com> wrote: > > Hi Jason, > > I have done a few tests with JDK 8 & 7. > > I have created custom handlers and added some > debug traces in their constructors and debug methods. > > Then I have added these two lines to my logging.properties: > > handlers = custom.Handler > .handlers = custom.DotHandler > > What I see is this: > > - the first time the configuration is read, two handlers > are added to the root logger: > - an instance of DotHandler (first), then an instance > of Handler (second). > > Then if you call LogManager.readConfiguration() again, > both handlers are closed, and this time only one > instance of Handler is added to the root logger. > No instance of DotHandler is added. > From now on the property is ignored. > > This is because the root logger is a special beast: > it will not be removed (like all other loggers) when > LogManager.readConfiguration() is called. > > And as it happens, handlers are added to loggers > when the loggers are added to the LogManager. > As it happens, the ".handlers" property is only parsed > and read when the root logger is added to the LogManager, > and thus only once. > > The "handlers" property on the other hand is parsed > every time LogManager.readConfiguration() is called. > > Given that, I suspect we should deprecate the use of > ".handlers" for the root logger, as it appears that > it has never worked properly. I could work on a patch > for 10 (possibly backport it to 9 update) to preserve > the strange behavior of 7 & 8, but is it worth it? > > What are your thoughts? > > best regards, > > -- daniel > > > > > On 09/11/2017 19:50, Jason Mehrens wrote: >> Daniel, >> I would assume you would fix since it is advertised as a feature over here: >> https://docs.oracle.com/javase/1.5.0/docs/guide/logging/changes.html >> If it helps, I've dug up a lot of the history on this over here a while back: >> https://stackoverflow.com/questions/36726431/in-a-java-util-logging-logging-properties-file-whats-the-difference-between-h >> I've updated that to include the links to this new issue. Now that I've >> linked this message thread to that message thread that should crash the >> internet. :) >> Jason >> ________________________________________ >> From: core-libs-dev <core-libs-dev-boun...@openjdk.java.net> on behalf of >> Daniel Fuchs <daniel.fu...@oracle.com> >> Sent: Thursday, November 9, 2017 1:29 PM >> To: mandy chung >> Cc: core-libs-dev@openjdk.java.net >> Subject: Re: Change in properties for logging: deliberate? >> On 09/11/2017 19:16, mandy chung wrote: >>> Daniel - we should add this known issue in the release note and document >>> the workaround. >> Hi Mandy, >> Right, it either need to be fixed, or documented in the release >> notes. Let me first have a look at the issue though. >> best regards, >> -- daniel > >
