protected Object doExecute()

in commands/src/main/java/org/jclouds/karaf/commands/compute/NodeCreateCommand.java [92:178]
76 lines of code
22 McCabe index (conditional complexity)

   protected Object doExecute() throws Exception {
      ComputeService service = null;
      try {
         service = getComputeService();
      } catch (Throwable t) {
         System.err.println(t.getMessage());
         t.printStackTrace(System.err);
         return null;
      }

      TemplateBuilder builder = service.templateBuilder();
      builder.any();
      if (smallest) {
         builder.smallest();
      }
      if (fastest) {
         builder.fastest();
      }
      if (biggest) {
         builder.biggest();
      }
      if (locationId != null) {
         builder.locationId(locationId);
      }
      if (imageId != null) {
         builder.imageId(imageId);
      }
      if (hardwareId != null) {
         builder.hardwareId(hardwareId);
      }

      if (osFamily != null) {
         builder.osFamily(OsFamily.fromValue(osFamily));
      }

      if (osVersion != null) {
         builder.osVersionMatches(osVersion);
      }

      TemplateOptions options = service.templateOptions();
      List<Statement> statements = Lists.newLinkedList();

      if (adminAccess) {
         statements.add(AdminAccess.standard());
      }
       if (recipes != null) {
           for (String recipe : recipes) {
               statements.add(recipeManager.createStatement(recipe, group));
           }
       }
      if (ec2SecurityGroups != null) {
         options.as(EC2TemplateOptions.class).securityGroups(ec2SecurityGroups);
      }
      if (ec2KeyPair != null) {
         options.as(EC2TemplateOptions.class).keyPair(ec2KeyPair);
      }
      if (ec2NoKeyPair != null) {
         options.as(EC2TemplateOptions.class).noKeyPair();
      }

      Set<? extends NodeMetadata> metadatas = null;

      if (!statements.isEmpty()) {
          options.runScript(new StatementList(statements));
      }

      try {
         metadatas = service.createNodesInGroup(group, number, builder.options(options).build());
      } catch (RunNodesException ex) {
         System.out.println("Failed to create nodes:" + ex.getMessage());
      }

     if (metadatas != null && !metadatas.isEmpty()) {
       System.out.println("Created nodes:");
       printNodes(service, metadatas, System.out);

       for (NodeMetadata node : metadatas) {
         for (String cacheKey : ServiceHelper.findCacheKeysForService(service)) {
           cacheProvider.getProviderCacheForType(Constants.ACTIVE_NODE_CACHE).put(cacheKey, node.getId());
           cacheProvider.getProviderCacheForType(Constants.INACTIVE_NODE_CACHE).put(cacheKey, node.getId());
           cacheProvider.getProviderCacheForType(Constants.SUSPENDED_NODE_CACHE).put(cacheKey, node.getId());
         }
       }
     }

      return null;
   }