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 sample.observation.logging;
  
  import java.util.Map;
  import java.util.stream.Collectors;
  
  import brave.handler.MutableSpan;
  import brave.handler.SpanHandler;
  import brave.propagation.TraceContext;
  
  public class LoggingSpanHandler extends SpanHandler {
  
      @Override
      public boolean end(TraceContext context, MutableSpan span, Cause cause) {
          System.out.println("SPAN FINISHED: traceId=" + span.traceId()
                  + " spanId=" + span.id()
                  + " parentId=" + span.parentId()
                  + " operation=" + span.name()
                  + " tags=" + span.tags().entrySet().stream().map(Object::toString).collect(Collectors.toList())
                  + " logs=[" + span.annotations().stream().map(Map.Entry::getValue).collect(Collectors.toList())
                  + "]");
          return true;
      }
  }
  