Hey folks,
I've tried many different ways of using Nashorn multithreaded based on what
I've found on the internet and I still can't get a single one to scale.
Even the most naive method of making many script engines with my script
tends to bottleneck itself when I have more than 10 threads invoking
functions.
I'm using the following code to compile my script and
invocable.invokeFunction("transform", input) to execute:
> static Invocable generateInvocable(String script) throws
> ScriptException {
> ScriptEngineManager manager = new ScriptEngineManager();
> ScriptEngine engine =
> manager.getEngineByName(JAVASCRIPT_ENGINE_NAME);
> Compilable compilable = (Compilable) engine;
> final CompiledScript compiled = compilable.compile(script);
> compiled.eval();
> return (Invocable) engine;
> }
The script I'm compiling is:
> String script = "function transform(input) {" +
> "var result = JSON.parse(input);" +
> "response = {};\n" +
> "for (var i = 0; i < result.length; i++) {\n" +
> " var summoner = {};\n" +
> " summoner.id = result[i].id;\n" +
> " summoner.name = result[i].name;\n" +
> " summoner.profileIconId = result[i].profileIconId;\n" +
> " summoner.revisionDate = result[i].revisionDate;\n" +
> " summoner.summonerLevel = result[i].level;\n" +
> " response[summoner.id] = summoner;\n" +
> "}\n" +
> "result = response;" +
> "return JSON.stringify(result);" +
> "};";
I've also tried other more scaleable ways to work with scripts
concurrently, but given that this is the most naive method where everything
is brand new and I still get slowness calling them concurrently I fear that
maybe I'm overlooking something extremely basic on my code.
Thanks.
-Jesus Luzon
