content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.bookkeeper.common.util;
  
  /**
   * Utility to make it easier to add context to exception messages.
   */
  public class ExceptionMessageHelper {
      public StringBuilder sb = new StringBuilder();
      private boolean firstKV = true;
  
      public static ExceptionMessageHelper exMsg(String msg) {
          return new ExceptionMessageHelper(msg);
      }
  
      ExceptionMessageHelper(String msg) {
          sb.append(msg).append("(");
      }
  
      public ExceptionMessageHelper kv(String key, Object value) {
          if (firstKV) {
              firstKV = false;
          } else {
              sb.append(",");
          }
          sb.append(key).append("=").append(value.toString());
          return this;
      }
  
      public String toString() {
          return sb.append(")").toString();
      }
  }
  