| /* |
| * 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.hadoop.hdds.server; |
| |
| import org.apache.hadoop.hdds.function.FunctionWithServiceException; |
| import org.apache.hadoop.hdds.tracing.TracingUtil; |
| import org.apache.hadoop.ozone.protocolPB.ProtocolMessageMetrics; |
| |
| import com.google.protobuf.ProtocolMessageEnum; |
| import com.google.protobuf.ServiceException; |
| import io.opentracing.Scope; |
| import org.slf4j.Logger; |
| |
| /** |
| * Dispatch message after tracing and message logging for insight. |
| * <p> |
| * This is a generic utility to dispatch message in ServerSide translators. |
| * <p> |
| * It logs the message type/content on DEBUG/TRACING log for insight and create |
| * a new span based on the tracing information. |
| */ |
| public class OzoneProtocolMessageDispatcher<REQUEST, RESPONSE> { |
| |
| private String serviceName; |
| |
| private final ProtocolMessageMetrics protocolMessageMetrics; |
| |
| private Logger logger; |
| |
| public OzoneProtocolMessageDispatcher(String serviceName, |
| ProtocolMessageMetrics protocolMessageMetrics, Logger logger) { |
| this.serviceName = serviceName; |
| this.protocolMessageMetrics = protocolMessageMetrics; |
| this.logger = logger; |
| } |
| |
| public RESPONSE processRequest( |
| REQUEST request, |
| FunctionWithServiceException<REQUEST, RESPONSE> methodCall, |
| ProtocolMessageEnum type, |
| String traceId) throws ServiceException { |
| Scope scope = TracingUtil |
| .importAndCreateScope(type.toString(), traceId); |
| try { |
| if (logger.isTraceEnabled()) { |
| logger.trace( |
| "{} {} request is received: <json>{}</json>", |
| serviceName, |
| type.toString(), |
| request.toString().replaceAll("\n", "\\\\n")); |
| } else if (logger.isDebugEnabled()) { |
| logger.debug("{} {} request is received", |
| serviceName, type.toString()); |
| } |
| protocolMessageMetrics.increment(type); |
| |
| RESPONSE response = methodCall.apply(request); |
| |
| if (logger.isTraceEnabled()) { |
| logger.trace( |
| "{} {} request is processed. Response: " |
| + "<json>{}</json>", |
| serviceName, |
| type.toString(), |
| response.toString().replaceAll("\n", "\\\\n")); |
| } |
| return response; |
| |
| } finally { |
| scope.close(); |
| } |
| } |
| } |