package org.kuali.common.devops.vagrant.cloud.json;
   
   import static java.util.TimeZone.getTimeZone;
   import static org.kuali.common.util.base.Precondition.checkNotBlank;
   import static org.kuali.common.util.base.Precondition.checkNotNull;
   
   import java.text.SimpleDateFormat;
   import java.util.TimeZone;
   
  import org.apache.commons.lang3.builder.Builder;
  
  public final class Timestamps {
  
      private Timestamps() {
      }
  
      public static final String PRIVATE = "private";
  
      private static final String TIMESTAMP_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'";
      private static final TimeZone TIMESTAMP_TIMEZONE = getTimeZone("UTC");
  
      public static Builder<SimpleDateFormat> newSimpleDateFormatBuilder() {
          return new SimpleDateFormatBuilder(TIMESTAMP_FORMAT, TIMESTAMP_TIMEZONE);
      }
  
      private static class SimpleDateFormatBuilder implements Builder<SimpleDateFormat> {
  
          public SimpleDateFormatBuilder(String format, TimeZone timezone) {
              this.format = checkNotBlank(format, "format");
              this.timezone = checkNotNull(timezone, "timezone");
          }
  
          private final String format;
          private final TimeZone timezone;
  
          @Override
          public SimpleDateFormat build() {
              SimpleDateFormat sdf = new SimpleDateFormat(format);
              sdf.setTimeZone(timezone);
              sdf.setLenient(false);
              return sdf;
          }
  
      }
  
  }