| /* |
| * 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.servicecomb.huaweicloud.dtm; |
| |
| import static org.apache.servicecomb.huaweicloud.dtm.DtmConfig.DTM_TRACE_ID_KEY; |
| |
| import java.lang.reflect.Method; |
| import java.util.Map; |
| |
| import org.apache.servicecomb.core.Const; |
| import org.apache.servicecomb.core.Handler; |
| import org.apache.servicecomb.core.Invocation; |
| import org.apache.servicecomb.core.definition.MicroserviceMeta; |
| import org.apache.servicecomb.swagger.invocation.AsyncResponse; |
| import org.apache.servicecomb.swagger.invocation.InvocationType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class DtmProviderHandler implements Handler { |
| private static final Logger LOG = LoggerFactory.getLogger(DtmProviderHandler.class); |
| |
| private Method dtmContextImMethod; |
| |
| @Override |
| public void init(MicroserviceMeta microserviceMeta, InvocationType invocationType) { |
| String className = DtmConfig.INSTANCE.getDtmContextClassName(); |
| try { |
| Class<?> clazz = Class.forName(className); |
| dtmContextImMethod = clazz.getMethod(DtmConfig.DTM_IMPORT_METHOD, Map.class); |
| } catch (Throwable e) { |
| // ignore just warn |
| LOG.warn("Failed to init method {}#{}", className, DtmConfig.DTM_IMPORT_METHOD, e); |
| } |
| } |
| |
| @Override |
| public void handle(Invocation invocation, AsyncResponse asyncResp) throws Exception { |
| try { |
| if (dtmContextImMethod != null) { |
| String traceId = invocation.getContext().get(Const.TRACE_ID_NAME); |
| invocation.getContext().put(DTM_TRACE_ID_KEY, traceId); |
| dtmContextImMethod.invoke(null, invocation.getContext()); |
| } |
| } catch (Throwable e) { |
| LOG.warn("Failed to execute method DTMContext#{}, please check", DtmConfig.DTM_IMPORT_METHOD, e); |
| } |
| invocation.next(asyncResp); |
| } |
| } |