Not sure I understand what you are asking. :-(

There was a suggestion in the #archiva irc channel that we should offer the code in archiva-checksum to the commons-codec project. An idea I fully support, but have no idea how to proceed with. ;-)

Also, Brett asked a passing question about how well archiva-checksum handles streaming. I'd like to get some more information on expectations, then I can put together a few test cases to ensure that functionality.

- Joakim

James William Dumay wrote:
Joakim,
Is this based on any work from commons or have you implemented this
stuff from whats provided in the JDK?

James

On Tue, 2008-04-08 at 21:54 -0700, Joakim Erdfelt wrote:
Joakim Erdfelt wrote:
I've been taking a stab and removing some of our dependencies on various plexus components.

First up, plexus-digest.

I've taken the varied code from many locations and come up with a stand alone archiva-checksum lib/component that I hope to be able to integrate into archiva/trunk.

So ... uhm ... consider this a call for discussion. ;-)

- Joakim

Some more details...

These are 4 classes present in archiva-checksum
  1) org/apache/archiva/checksum/Hash.java
  2) org/apache/archiva/checksum/Hasher.java
  3) org/apache/archiva/checksum/Hex.java
  4) org/apache/archiva/checksum/ChecksumFile.java

This is how the replacements work ...

Hash.class is an enum identifying the types of Hash functions (currently only SHA1 and MD5), with a few details on ids that the hash techniques expose.
  This is similar in scope, but not a 100% replacement for ...
  org/codehaus/plexus/digest/Sha1Digester.java
  org/codehaus/plexus/digest/Md5Digester.java
  org/codehaus/plexus/digest/StreamingSha1Digester.java

Hasher.class is the main hashing routines, stream based, and has a few optimizations for performing bulk or group hashing based on a single stream, without processing the stream multiple times (one for each hash).
  Hasher.class replaces the following classes in plexus-digest
  org/codehaus/plexus/digest/Digester.java
  org/codehaus/plexus/digest/StreamingDigester.java

Hex.class is just a simple utility class to convert a byte array to a Hex string.
  It is a suitable replacement for plexus-digest
  org/codehaus/plexus/digest/Hex.java

ChecksumFile.class is the file specific implementation, for dealing with the .md5 and .sha1 files (parsing, validating, creating, etc..)
  It is a replacement for plexus-digest
  org/codehaus/plexus/digest/ChecksumFile.java
  org/codehaus/plexus/digest/DigestUtils.java
  And also covers the logic present in archiva-common too
  org/apache/maven/archiva/common/utils/Checksums.java

- Joakim


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