[jetty-users] Advice about embedding Jetty into a large existing app

[Shawn Heisey <eclipse@xxxxxxxxxxxx>]

I'm from the Solr project.  This is a large application that currently 
ships with scripts that start Jetty to get Solr running.  I would like 
to have Solr be its own application.  The quickest path to that is to 
embed Jetty into Solr.

https://issues.apache.org/jira/browse/SOLR-6733

Some of the reasons for doing this are indirectly referenced here:

https://wiki.apache.org/solr/WhyNoWar

A little while ago I asked some questions on the freenode #jetty IRC 
channel.  Since it's evening in the USA as I write this, I am not 
expecting anyone on the channel to see what I've asked until tomorrow, 
so I thought I would move the discussion here.

Here's a transcript of my questions from IRC:

19:06 < elyograg> first big question: are there guides for doing this that I
                  can read?
19:09 < elyograg> I did find the "Embedding Jetty" section of the jetty 
docs,
                  and I will read that.  But I'm also interested in a 
quicklist
                  of dos and don'ts.
19:10 < elyograg> a question that's clearly NOT on-topic, but I need to ask
                  somewhere:  How do I go about creating 
solr-start.jar?  How
                  do I do this within an existing (and COMPLICATED) ant 
build
                  system?
19:13 < elyograg> when embedding jetty, do things associated with the full
                  jetty app (like lib/ext) disappear?  I would guess 
that they
                  do, just looking for confirmation.

Any advice?  I have read the 'Embedding Jetty' page now.  It looks like 
most of the meat of that is in the source code examples, which I haven't 
fully digested yet.

I think that all of Solr's handlers are accessed through a class that we 
call SolrDispatchFilter.

I'm sure I will have lots of really dumb questions once the work really 
gets underway.  I can do most of that on the IRC channel.

To anyone who might respond: If you'd prefer to use IRC, I'm there.  
Can't guarantee that I'll be watching it, but I do have full access to 
the channel history once I get back to it.

Thanks,
Shawn