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Ruby with native libs from Java

This sample shows ability to execute Ruby code with native dependencies. It's a Chef client in this case. To do so it executes native RVM which executes DRb server code to access required functionality. Then it executes DRb client code using JRuby to communicate with native Ruby. Finally, it passes results to Java code.

Preconditions

You should have following software installed to execute this code:

  • Java
  • Ant
  • JRuby
  • Chef (and Ruby as dependency)

Checkout this repository and edit ruby-from-java.properties to point to your JRuby installation and Chef configuration.

Execution

Just enter:

sva@desert-lt$ ant

Sample output:

Buildfile: /home/sva/IdeaProjects/ruby-from-java/build.xml

clean:

build:
    [javac] /home/sva/IdeaProjects/ruby-from-java/build.xml:19: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 1 source file to /home/sva/IdeaProjects/ruby-from-java

run:
     [java] ScriptEngineManager providers.next(): javax.script.ScriptEngineFactory: Provider com.sun.script.javascript.RhinoScriptEngineFactory not found
     [java] #<DRb::DRbObject:0x33697802 @uri="druby://127.0.0.1:1234", @ref=nil>
     [java] Nodes received from remote Ruby code:
     [java] desert-lt
     [java] precise32
     [java]
     [java] Nodes from Ruby script engine:
     [java] Node: desert-lt
     [java] Node: precise32

all:

BUILD SUCCESSFUL