Apart from going a bit cross-eyed from seeing clojure-as-java code
from the first time, I get it :-)
Thanks Chas, I'll give it a try and let you know how it goes.
Stathis
On Feb 15, 3:31 pm, Chas Emerick <c...@cemerick.com> wrote:
> You can absolutely run an nREPL server from a mostly-Java application.
> Something like this would do (just a sketch, untested):
>
> ////
> private static IFn startServer, stopServer;
>
> static {
> try {
> RT.var("clojure.core",
> "require").invoke(Symbol.intern("clojure.tools.nrepl.server"));
> startServer = RT.var("clojure.tools.nrepl.server", "start-server");
> stopServer = RT.var("clojure.tools.nrepl.server", "stop-server");
> } catch (Exception e) {
> throw new RuntimeException(e);
> }
>
> }
>
> public static Object startServer (int port) {
> return startServer.invoke(Keyword.intern("port"), port);
>
> }
>
> public static void stopServer (Object server) {
> stopServer.invoke(server);}
>
> ////
>
> There's already a thin Java wrapper for the nREPL client API
> (https://github.com/clojure/tools.nrepl/blob/master/src/main/java/cloj...one
> for the server side would be good to cover that use case as well.
>
> - Chas
>
> On Feb 15, 2012, at 8:46 AM, Stathis Sideris wrote:
>
>
>
>
>
>
>
> > It sounds great Chas, especially the wide acceptance that nREPL seems
> > to already have with the various tools.
>
> > I wanted to ask about the potential of this as an embedded Clojure
> > REPL in existing Java applications for the purpose of connecting
> > remotely and performing inspection (and possibly manipulation?) of the
> > current state of the application for debugging purposes. Is this a
> > legitimate use case? How easy do you think it would be to achieve this
> > with the current version of nREPL?
>
> > Thanks!
>
> > Stathis
>
> > On Feb 14, 2:42 pm, Chas Emerick <c...@cemerick.com> wrote:
> >> I have released nREPL 0.2.0-beta1, which should show up in Maven central
> >> soon.
>
> >> For those that don't know, nREPL is "a Clojure network REPL that provides
> >> a REPL server and client, along with some common APIs of use to IDEs and
> >> other tools that may need to evaluate Clojure code in remote environments":
>
> >>https://github.com/clojure/tools.nrepl
>
> >> This release is the result of gathering ideas, feedback, and requirements
> >> from dozens of people that need to have a REPL backend in a variety of
> >> environments, and want to maximize interoperability of Clojure tooling —
> >> much of which inevitably ends up grounding out at running or connecting to
> >> a REPL somewhere.
>
> >> This release marks a thorough breaking change from every aspect the last
> >> release of nREPL, 0.0.5. (The rationale for this is detailed in design
> >> notes in the project's wiki, for those that haven't followed along.) The
> >> result is that a design that settles a number of failings of nREPL's
> >> original design, and which provides a number of different vectors of
> >> extensibility — similar in many respects to those provided by Ring — that
> >> I hope people will take advantage of to build astonishingly cool tools.
>
> >> Note that pre-release versions of many Clojure tools are already using
> >> snapshots of nREPL 0.2.0, including Counterclockwise, Leiningen, and
> >> Reply, and as far as I know, more are on their way.
>
> >> My plans for the near future are to continue to tighten up the
> >> documentation, and release an HTTP transport: a Ring handler that exposes
> >> nREPL as an HTTP API.
>
> >> If you have any questions or find some shortcoming, bug, or problem with
> >> this release, please reply here or ping me on irc or twitter (`cemerick`
> >> in either case).
>
> >> Happy tooling,
>
> >> - Chas
>
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