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Previously nonces were stored in a global map which might not scale
well due to some issues:
1. The map uses the nonces as map keys. There were possible nonce
collisions which required special handling.
2. The collision handling code was not thread safe. There were
possible race conditions during concurrent modifications.
3. The map was shared and size limited. If there were a lot of
users using the system, valid nonces could get pruned.
4. The map maps the nonces to client certificates. This limits
the possible authentication methods that can be supported.
Now the code has been modified such that each user has a private map
in the user's session to store the nonces. Additional locking has been
implemented to protect against concurrent modifications. The map now
uses the target of the operation as the map key, eliminating possible
collisions and allowing the use of other authentication methods. Since
this is a private map, it's not affected by the number of users using
the system.
Ticket #474
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The shutdown() methods in several classes have been fixed to allow
more graceful shutdown and clean restart. There are two types of
object attributes that need to be handled differently.
Attributes that are initialized by the constructor should not be
nulled during shutdown because they won't be reinitialized during
restart. If they require a cleanup (e.g. emptying collections,
closing LDAP connections) it's not necessary to check for null
before calling the cleanup method because they're never null.
For attributes that are initialized during init(), it may not be
necessary to do a cleanup or null the attribute since they might
still be used by other threads and they will be reinitialized
during restart so the old objects will be garbage collected. If
they do need a cleanup they should be checked for null because
they might still be null due to init() failure or initialization
conditionals.
If the attributes are initialized conditionally, the logic has been
modified to ensure the attributes are either initialized or set to
null.
Ticket #247
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Unnecessary type casts have been removed using Eclipse Quick Fix.
Ticket #134
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Whitespaces in Java code have been removed with the following command:
find . -not -path .git -name *.java -exec sed -i 's/[[:blank:]]\+$//' {} \;
Ticket #134
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Previously the source code was located inside a pki folder.
This folder was created during svn migration and is no longer
needed. This folder has now been removed and the contents have
been moved up one level.
Ticket #131
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