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From "George Sexton" <gsex...@mhsoftware.com>
Subject Code Submission - Wild Card Aliases
Date Tue, 03 May 2005 03:09:46 GMT
I have completed the coding in o.a.t.u.http.mapper.Mapper to implement
wild-card aliases.

If a request for a host is made, and that host is not found, the code tests
the host and aliases list and looks for wild-cards.

So, a host name of www.mydomain.com would match an alias of *.mydomain.com.
This additional level of testing is only done if the the presented host name
is not found in the standard host list. Once a host is found via wild-card,
it is added to the standard host list. Subsequent requests for that host
name will find it via the standard search mechanism.

As part of the conversion, I re-worked the test harness code and expanded it
to be a lot more complete. The output of the new test harness with the
unmodified Mapper code matches identically the output of the modified
mapper. IOW, I'm 99% confident that the behavior of the Mapper matches the
old Mapper.

The time differential between the two runs is around 500ms over 1 million
iterations. I.E. the original code runs in 8000 ms for 1 million iterations
of the testing code, while the new code takes 8500ms. The new code adds
approximately 0.05 % to the time for a lookup.

I am running the modified mapper code with 5.5.9 on an installation that has
40 hosts configured and it seems to be working correctly.

I'd really appreciate it if a committer would get this added to the source
tree.

The complete modified Mapper.java file can be downloaded from:

http://www.mhsoftware.com/~gsexton/Mapper.java

If a decision is made to reject this patch, I'd appreciate knowing why. If
there's something wrong from a coding or style perspective, I'd be happy to
fix things.


George Sexton
MH Software, Inc.
http://www.mhsoftware.com/
Voice: 303 438 9585
 


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