Re: Error while running jclouds example code

[Aled Sage]

Hi Avanti,

A java.lang.NoSuchMethodError usually means that you are running with a 
different version on the classpath compared to the one you compiled your 
code against (or a mix of jclouds versions, or that you've added to the 
classpath a different version of a jclouds upstream dependency from what 
jclouds was compiled against).

Could you check that please, and can you include your full exception 
stack trace so we can see which library/method it's complaining about.

Aled

p.s. If you're building with maven, also try `mvn dependency:tree` to 
see all the versions of all the dependencies that maven is pulling in. 
If something is pulled in twice with different version, that can cause 
such problems.


On 28/02/2014 07:29, Avanti Ajay wrote:
Hi..

I have installed jclouds and devstack and I am trying to run the 
following code :


import java.util.Set;
import java.lang.Thread.UncaughtExceptionHandler;

import org.jclouds.ContextBuilder;
import org.jclouds.compute.ComputeService;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.openstack.nova.v2_0.features.ImageApi;
import org.jclouds.openstack.nova.v2_0.domain.Image;
import org.jclouds.rest.RestContext;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.NovaAsyncApi;
import org.jclouds.logging.slf4j.config.SLF4JLoggingModule;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.FluentIterable;
import com.google.inject.Module;

public class JCloudsOpenStack {
  private ComputeService compute;
  private RestContext<NovaApi, NovaAsyncApi> nova;
  private Set<String> zones;

  public static void main(String[] args) {
    JCloudsOpenStack jCloudsOpenStack = new JCloudsOpenStack();
    jCloudsOpenStack.init();
    jCloudsOpenStack.listImages();
    jCloudsOpenStack.close();
  }

  private void init() {
    Thread.setDefaultUncaughtExceptionHandler(new 
UncaughtExceptionHandler() {


        public void uncaughtException(Thread t, Throwable e) {
        if (compute != null) close();
        e.printStackTrace();
        System.exit(1);
      }
    });

    Iterable<Module> modules = ImmutableSet.<Module> of(
      new SLF4JLoggingModule());

    String provider = "openstack-nova";
    String identity = "admin:admin"; // tenantName:userName
    String password = "ashwini";

    ComputeServiceContext context = ContextBuilder.newBuilder(provider)
      .credentials(identity, password)
      .endpoint("http://172.16.32.87:5000/v2.0/";)
      .modules(modules)
      .buildView(ComputeServiceContext.class);
    compute = context.getComputeService();
    nova = context.unwrap();
    zones = nova.getApi().getConfiguredZones();
  }

  private void listImages() {
    for (String zone: zones) {
      ImageApi imageApi = nova.getApi().getImageApiForZone(zone);

      System.out.println("Calling listImages for " + zone + ":");

      FluentIterable<? extends Image> images = 
imageApi.listInDetail().concat();

      for (Image image: images) {
        System.out.println("\t" + image);
      }
    }
  }
  private void close() {
    compute.getContext().close();
  }
}


But I am getting the following error : Exception: 
java.lang.NoSuchMethodError thrown from the UncaughtExceptionHandler 
in thread "main"

Please help..

Thank you
Avanti