code: /*
   * 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.skywalking.oap.query.zipkin.handler;
  
  import com.linecorp.armeria.common.HttpRequest;
  import com.linecorp.armeria.common.HttpResponse;
  import com.linecorp.armeria.server.ServiceRequestContext;
  import com.linecorp.armeria.server.annotation.ExceptionHandlerFunction;
  import lombok.extern.slf4j.Slf4j;
  
  import static com.linecorp.armeria.common.HttpStatus.BAD_REQUEST;
  import static com.linecorp.armeria.common.HttpStatus.INTERNAL_SERVER_ERROR;
  import static com.linecorp.armeria.common.MediaType.ANY_TEXT_TYPE;
  
  @Slf4j
  public class ZipkinQueryExceptionHandler implements ExceptionHandlerFunction {
      @Override
      public HttpResponse handleException(final ServiceRequestContext ctx, final HttpRequest req, final Throwable cause) {
          String rspMsg = cause.getMessage() != null ? cause.getMessage() : cause.getClass().getSimpleName();
          // Response msg for illegal query args.
          if (cause instanceof IllegalArgumentException) {
              log.error(cause.getMessage(), cause);
              return HttpResponse.of(BAD_REQUEST, ANY_TEXT_TYPE, rspMsg);
          } else {
              log.error(cause.getMessage(), cause);
              return HttpResponse.of(INTERNAL_SERVER_ERROR, ANY_TEXT_TYPE, rspMsg);
          }
      }
  }
  