I'll take a shot at the ones I know off the top of my head
On Jun 9, 2007, at 5:18 PM, Steve Souza wrote:
I am interested in creating a Server for log4j that receives logging
messages from any multiple other servers (other servers are remote
jvm's
that are also running log4j). Sort of a centralized logging
receiver, that
will
1) Use JAMon to track counts of logging messages by server and by
level (see
http://jamonapi.sourceforge.net/log4j_jamonappender.html for screen
snapshots of the single server version of this),
2) Allow me to look at the most recent log messages by server via a
web page
(sort of like tailing the various servers).
It is unclear to me how to proceed. I think I should be able to
use the
SocketReceiver and install the JAMonAppender on this server and do
a proof
of concept fairly easily. A couple questions
1) Is this the purpose of a SocketReceiver? How does this differ
from the
SocketHubReceiver?
The receivers (based on their javadoc) appear to serve the same
purpose, but only vary on what appender they are expecting on the
sending side. The difference between SocketAppender and
SocketHubAppender is that SocketAppender sends to an configured
destination and SocketHubAppender sends to any client who registers
an interest. For your use case, I would expect that
SocketHubAppender and SocketHubReceiver would be the best combination.
2) Can this 1.2.15 SocketReceiver class receive log messages from
ealier
versions of log4j such as 1.2.14?
The receivers would break if the serialized form of LoggingEvent was
incompatible. There are tests that check whether the current code
base can deserialize LoggingEvents serialized with older versions,
but I don't recall specifically what version of log4j was used to
generate the original serialized form. I suspect it was log4j 1.2.8.
3) Can I run a SocketReciever in the jvm of a web server such as
Tomcat.
This would give me the ability to display any of the messages sent
to it via
a web page which would be handy.
4) Is there any good documentation on ways to create a Server, and
if not is
there any sample code?
5) Is this the location for the latest version of log4j? (One
comment is
that it would be nice to have a log4j page explaining the various
links that
all seem to have code, and what the purpose of each is)
http://people.apache.org/builds/logging/log4j/1.2.15/
Anything on people.apache.org are nightly builds or release
candidates and are not intended for general availability or use. To
actually release something we have to have a place to put release
candidates for the development community to provide feedback before
calling for a vote to actually publish a release on www.apache.org/
dist. Anything on people.apache.org is subject to disappear or be
updated at any time. Anything on www.apache.org/dist is archived for
posterity. Things on people.apache.org are announced on a
development mailing list only since the content is only intended for
developers.
The latest released version of log4j is 1.2.14. Any log4j 1.2.15
release candidate is experimental. We've had more than the typical
number of release candidates for log4j 1.2.15 due to the switch from
an Ant to Maven based build.
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