Hi John-
You might be interested in my project GrassyKnoll. It's somewhat
similar to Solr, in that it's a standalone app and fills a similar
role. From your perspective, it differs in a few key (and hopefully
helpful) ways:
* standalone server. GrassyKnoll includes it's own webserver - no
Apache/Tomcat required
* pure python. Besides extension modules, such as PyLucene, all GK's
code and it's minimal dependencies are pure python modules.
* written in Python. If you need to customize the server, you can
do so in Python instead of Java
* extensive documentation. GrassyKnoll is documented on a wiki, not
the mailing list.
* concurrency issues resolved. As a standalone server, GK handles
PyLucene concurrency issues so you don't have to.
We should have a production-ready 0.4 release in early May.
More info (incl. mailing lists & IRC) at http://grassyknoll.googlecode.com
--Pete
On Apr 11, 2008, at 12:14 PM, John Beaver wrote:
Hi TJ. Sounds like a Solr-like solution. I was avoiding Solr, since
I'm already going to have a hard time getting IT to install a Pylons
app on the webserver; Tomcat would take more time.
What software/libraries do you use for this? Code samples?
TJ Ninneman wrote:
I'm sure someone can shed some light on this for you but I'm a
strong believer in separating the front end web app and any backend
search/indexing services (just like we separate the front end
webapp from the backend database (mysql, pgsql, etc).
Our Pylons app simply queries a backend XML-RPC instance which can
be threaded, forking, single threaded, twisted or whatever. Let me
just say it's a lot easier debugging concurrency issues in a a
simple XML-RPC server than in Apache, Paste Http, CherryPy, etc.
TJ
On Apr 11, 2008, at 10:47 AM, John Beaver wrote:
Hi, I'm trying to integrate PyLucene with a Pylons app, but I'm
having serious stability problems. Does anyone have experience
with this?
Specifically, I have a single action which does the following:
lucene.initVM(lucene.CLASSPATH)
directory = FSDirectory.getDirectory(Globals.LUCENE_INDEX_PATH);
searcher = IndexSearcher(directory)
analyzer = StandardAnalyzer()
query = QueryParser('terms', analyzer).parse(term)
hits = searcher.search(query)
... process hits
It works perfectly the first time I view the corresponding
webpage, but it reproducibly crashes the webserver (paster serve)
the second time I try, always while in the initVM() function.
I've tried putting the initVM() call in middleware.py, and I've
tried using a global flag to make sure that initVM() is only
called once in the controller. Both seem to fail when a different
thread tries to access PyLucene functions.
I'm assuming this is a threading issue, so I'm going to write some
code to ensure that everything happens within a single thread. But
does anyone have a simpler solution for getting this working
within Pylons?
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--
Pete
[EMAIL PROTECTED]
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