Logging with jclouds

JCloudsLoggingExample.java

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

import org.jclouds.ContextBuilder;
import org.jclouds.compute.ComputeService;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.domain.ComputeMetadata;
import org.jclouds.logging.slf4j.config.SLF4JLoggingModule;

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

public class JCloudsLoggingExample {
  private ComputeService compute;

  public static void main(String[] args) {
    JCloudsLoggingExample jCloudsLoggingExample = new JCloudsLoggingExample();
    jCloudsLoggingExample.init();
    jCloudsLoggingExample.listServers();    
    jCloudsLoggingExample.close();
  }
  
  private void listServers() {
    System.out.println("Calling listNodes...");
    Set<? extends ComputeMetadata> nodes = compute.listNodes();
    
    System.out.println("Total Number of Nodes = " + nodes.size());
    for (ComputeMetadata node: nodes) {
      System.out.println("\t" + node);
    }
  }

  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 = "rackspace-cloudservers-us";
    String identity = "my-username";
    String apiKey = "my-api-key";

    ComputeServiceContext context = ContextBuilder.newBuilder(provider)
      .credentials(identity, apiKey)
      .modules(modules)
      .buildView(ComputeServiceContext.class);
    compute = context.getComputeService();
  }

  private void close() {
    compute.getContext().close();
  }
}