Closed lucabelluccini closed 10 years ago
kares
commented
11 years ago Thanks Luca, but that probably means you have some weirdness at yours locally ... maybe using rhino's jar from CP.
try: to_java.getClass.getResource('/org/mozilla/javascript/ScriptRuntime.class').toString
lucabelluccini
commented
11 years ago Hello, I am trying to embed this Javascript Engine in Ruby running on JRuby to enrich an existing tool.
irb(main):001:0> to_java.getClass.getResource('/org/mozilla/javascript/ScriptRuntime.class').toString
NoMethodError: undefined method `toString' for nil:NilClass
from (irb):3:in `evaluate'
from org/jruby/RubyKernel.java:1121:in `eval'
from org/jruby/RubyKernel.java:1517:in `loop'
from org/jruby/RubyKernel.java:1282:in `catch'
from org/jruby/RubyKernel.java:1282:in `catch'
from /home/admin/logstash/lib/logstash/runner.rb:168:in `run'
from org/jruby/RubyProc.java:271:in `call'
from /home/admin/logstash/lib/logstash/runner.rb:200:in `run'
from /home/admin/logstash/lib/logstash/runner.rb:74:in `main'
from /home/admin/logstash/lib/logstash/runner.rb:230:in `(root)'I tried to pack the tool (logstash) in a jar and I am unable to use Rhino due to missing jar, but this is another issue linked to the build.
kares
commented
11 years ago You won't be able to pack a jar inside another ... in that case you need to extract and re-pack the jar (therubyrhino needs the rhino.jar from _therubyrhinojar gem) ... I'm not sure what the issue is here but I'm pretty confident it's specific about your setup ( otherwise we would have heard of this a long time ago :) ... start with Java's class-path. Good luck!
lucabelluccini
commented
11 years ago Hello, thanks. It was linked to jruby gem installation. Best regards, Luca B.
lucabelluccini
commented
11 years ago Hello... I changed a little the structure of the code and I am no more able to convert Time to Javascript
jruby-1.7.8 :001 > require 'rhino'
=> true
jruby-1.7.8 :002 > a = {}
=> {}
jruby-1.7.8 :003 > a['@timestamp'] = Time.now
=> 2013-11-21 02:08:31 +0100
jruby-1.7.8 :004 > a
=> {"@timestamp"=>2013-11-21 02:08:31 +0100}
jruby-1.7.8 :005 > ctx = Rhino::Context.new
=> #<Rhino::Context:0x7d1050be @scope={}, @global={}, @native=#<Java::OrgMozillaJavascript::Context:0x43824d2c>>
jruby-1.7.8 :006 > ctx.eval "function fun(par) { return par['@timestamp2'] = par['@timestamp'] }"
=> nil
jruby-1.7.8 :007 > ctx
=> #<Rhino::Context:0x7d1050be @scope={"fun"=>org.mozilla.javascript.gen._eval__1@6517a4c6}, @global={"fun"=>org.mozilla.javascript.gen._eval__1@6517a4c6}, @native=#<Java::OrgMozillaJavascript::Context:0x43824d2c>>
jruby-1.7.8 :008 > ctx['fun'].methodcall(a)
NoMethodError: undefined method `getDeclaredConstructor' for class org.mozilla.javascript.NativeObject:Java::JavaClass
from /home/luca/.rvm/gems/jruby-1.7.8/gems/therubyrhino-2.0.2/lib/rhino/wormhole.rb:85:in `time_to_javascript'
from /home/luca/.rvm/gems/jruby-1.7.8/gems/therubyrhino-2.0.2/lib/rhino/wormhole.rb:25:in `to_javascript'
from /home/luca/.rvm/gems/jruby-1.7.8/gems/therubyrhino-2.0.2/lib/rhino/wormhole.rb:72:in `hash_to_javascript'
from org/jruby/RubyHash.java:1363:in `each_pair'
from /home/luca/.rvm/gems/jruby-1.7.8/gems/therubyrhino-2.0.2/lib/rhino/wormhole.rb:71:in `hash_to_javascript'
from /home/luca/.rvm/gems/jruby-1.7.8/gems/therubyrhino-2.0.2/lib/rhino/wormhole.rb:24:in `to_javascript'
from /home/luca/.rvm/gems/jruby-1.7.8/gems/therubyrhino-2.0.2/lib/rhino/rhino_ext.rb:227:in `apply'
from (irb):8:in `evaluate'
from org/jruby/RubyKernel.java:1123:in `eval'
from org/jruby/RubyKernel.java:1519:in `loop'
from org/jruby/RubyKernel.java:1284:in `catch'
from org/jruby/RubyKernel.java:1284:in `catch'
from /home/luca/.rvm/rubies/jruby-1.7.8/bin/irb:13:in `(root)'To detail a little more: https://gist.github.com/lucabelluccini/5cfb3362de69e067bf7f
kares
commented
11 years ago ctx['fun'].call a or ctx['fun'].methodcall nil, a (first arg is this) ... do not expect a['@timestamp2''] to be than set on the Ruby side (or maybe I'm wrong can't remember) ... you've set it on the JavaScript side.
there's also a bug in the end likely caused by newer JRuby the trace you've linked.
lucabelluccini
commented
11 years ago The only workaround to me now is the following:
require 'rhino'
ctx = Rhino::Context.new
ctx.eval <<EOS
function JsRule() {
}
JsRule.prototype.process = function(iEvent) {
result['onedate'] = new Date();
return result;
}
jsrule = new JsRule();
EOS
jsrule = ctx['jsrule']
event = {}
event['s'] = {}
event['g'] = {}
event['@timestamp'] = Time.new
raw_processed_event = jsrule.process(event)
#allows to convert NativeObject to Hash (!!! the timestamp will be still NativeDate)
processed_event = raw_processed_event.to_hash
processed_event['@timestamp'] = Rhino.to_ruby(processed_event['@timestamp'])
# at this moment, the @timestamp will be properly seen as Time
# onedate will be still NativeDate!
In the prevous post, I tried to do: ctx['fun'].methodcall(a.to_java) and the data conversion works.
If I try: jsrule.process(event.to_java) complains about passing 2 params instead of 1.
On JRuby via rvm, both 1.7.5 and 1.7.8 are impacted.
kares
commented
10 years ago it's in as https://github.com/cowboyd/therubyrhino/commit/cac2b9512a5d82579b5cdb7f1c677a0ae6b0d590 ... please note (once again) that you've not used the exposed API correctly (comments above) ... methodcall is similar to JS' apply thus first argument is always this while call acts with Ruby semantics (no need to pass context as your examples seem to show case that you do not intend to). thanks!
Hello, tried to do the following
Triggers
Same happens when sharing objects between Ruby (running on JRuby) and a Rhino Js context.