Jean-Sebastien Delfino wrote:
ant elder wrote:
On Tue, May 25, 2010 at 7:17 AM, Jean-Sebastien Delfino
<[email protected]> wrote:
Hi,
I'd like to contribute an example of a logging component for Tuscany
Java
using a logging tool like Scribe [1].
I've played around with a similar component for Tuscany C++ and found
that
Scribe works and scales really well.
Then in a second step I'd like to investigate how to hook it up with the
logging policy (as a variation of the current logging policy).
If there's no objection I'll start to work on that in the next few days.
[1] http://github.com/facebook/scribe
--
Jean-Sebastien
I like the idea of having a collection of useful components available
in Tuscany for users. I did have a quick look at scribe, but from that
admittedly very quick look its not totally clear what it is - some
sort of distributed logging thing using in C++ and/or Python?
Scribe is a logging server written in C++ using Apache Thrift [2]. Logs
can be written locally (with configuration of how the logs are stored,
rotated etc) or streamed to remote Scribe servers over a network (useful
to aggregate logs from distributed apps).
To log something you give Scribe a category and a log string. The
category can be used to organize how the logs are stored.
More info on the Scribe wiki [3].
Would
you say a bit more about how that would that fit in with the Java
runtime and how an SCA component using it would be used?
Scribe uses Apache Thrift, which supports pure Java clients [4][5].
I'm thinking that the sample logging component (written in Java) can
have a simple int log(String category, String message) method and two or
three properties to configure the Scribe server location.
Then from an app, declare a reference, wire it to the logging component,
and call ref.log("foo", "Hey there").
It would be nice to also have a Scribe-based logging policy similar to
modules/policy-logging but that'll be more work, probably more than I
can do with my limited time.
I'm planning to find a couple hours during the long weekend to play more
with this, and come up with a strawman in samples/logging-scribe.
Hope this helps
[2] http://incubator.apache.org/thrift/
[3] http://wiki.github.com/facebook/scribe/
[4] http://wiki.apache.org/thrift/ThriftUsageJava
[5] http://jnb.ociweb.com/jnb/jnbJun2009.html
I've committed an initial version of the Scribe logging sample [6]. The
README describes how to build and test it.
[6]
http://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/logging-scribe
--
Jean-Sebastien
