package org.kuali.common.jute.runtime;
   
   import static org.kuali.common.jute.base.Precondition.checkMin;
   import static org.kuali.common.jute.reflect.Reflection.checkNoNulls;
   
   import java.lang.management.ClassLoadingMXBean;
   import java.lang.management.ManagementFactory;
   
   import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  
  @JsonDeserialize(builder = ClassLoading.Builder.class)
  public final class ClassLoading {
  
      private final int current;
      private final long total;
      private final long unloaded;
  
      private ClassLoading(Builder builder) {
          this.current = builder.current;
          this.total = builder.total;
          this.unloaded = builder.unloaded;
      }
  
      public static ClassLoading build() {
          ClassLoadingMXBean bean = ManagementFactory.getClassLoadingMXBean();
          Builder builder = builder();
          builder.withCurrent(bean.getLoadedClassCount());
          builder.withTotal(bean.getTotalLoadedClassCount());
          builder.withUnloaded(bean.getUnloadedClassCount());
          return builder.build();
      }
  
      public static Builder builder() {
          return new Builder();
      }
  
      public static class Builder implements org.apache.commons.lang3.builder.Builder<ClassLoading> {
  
          private int current;
          private long total;
          private long unloaded;
  
          public Builder withCurrent(int current) {
              this.current = current;
              return this;
          }
  
          public Builder withTotal(long total) {
              this.total = total;
              return this;
          }
  
          public Builder withUnloaded(long unloaded) {
              this.unloaded = unloaded;
              return this;
          }
  
          @Override
          public ClassLoading build() {
              return validate(new ClassLoading(this));
          }
  
          private static ClassLoading validate(ClassLoading instance) {
              checkNoNulls(instance);
              checkMin(instance.current, 0, "current");
              checkMin(instance.total, 0, "total");
              checkMin(instance.unloaded, 0, "unloaded");
              return instance;
          }
      }
  
      public int getCurrent() {
          return current;
      }
  
      public long getTotal() {
          return total;
      }
  
      public long getUnloaded() {
          return unloaded;
      }
  
  }