| /* |
| * Copyright 1999-2018 Alibaba Group Holding Ltd. |
| * |
| * Licensed 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 com.alibaba.csp.sentinel.adapter.dubbo; |
| |
| import com.alibaba.csp.sentinel.Entry; |
| import com.alibaba.csp.sentinel.EntryType; |
| import com.alibaba.csp.sentinel.SphU; |
| import com.alibaba.csp.sentinel.Tracer; |
| import com.alibaba.csp.sentinel.adapter.dubbo.fallback.DubboFallbackRegistry; |
| import com.alibaba.csp.sentinel.context.ContextUtil; |
| import com.alibaba.csp.sentinel.log.RecordLog; |
| import com.alibaba.csp.sentinel.slots.block.BlockException; |
| |
| import org.apache.dubbo.common.extension.Activate; |
| import org.apache.dubbo.rpc.Filter; |
| import org.apache.dubbo.rpc.Invocation; |
| import org.apache.dubbo.rpc.Invoker; |
| import org.apache.dubbo.rpc.Result; |
| import org.apache.dubbo.rpc.RpcException; |
| |
| /** |
| * <p>Apache Dubbo service provider filter that enables integration with Sentinel. Auto activated by default.</p> |
| * <p>Note: this only works for Apache Dubbo 2.7.x or above version.</p> |
| * |
| * If you want to disable the provider filter, you can configure: |
| * <pre> |
| * <dubbo:provider filter="-sentinel.dubbo.provider.filter"/> |
| * </pre> |
| * |
| * @author Carpenter Lee |
| * @author Eric Zhao |
| */ |
| @Activate(group = "provider") |
| public class SentinelDubboProviderFilter implements Filter { |
| |
| public SentinelDubboProviderFilter() { |
| RecordLog.info("Sentinel Apache Dubbo provider filter initialized"); |
| } |
| |
| @Override |
| public Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException { |
| // Get origin caller. |
| String application = DubboUtils.getApplication(invocation, ""); |
| |
| Entry interfaceEntry = null; |
| Entry methodEntry = null; |
| try { |
| String resourceName = DubboUtils.getResourceName(invoker, invocation); |
| String interfaceName = invoker.getInterface().getName(); |
| // Only need to create entrance context at provider side, as context will take effect |
| // at entrance of invocation chain only (for inbound traffic). |
| ContextUtil.enter(resourceName, application); |
| interfaceEntry = SphU.entry(interfaceName, EntryType.IN); |
| methodEntry = SphU.entry(resourceName, EntryType.IN, 1, invocation.getArguments()); |
| |
| Result result = invoker.invoke(invocation); |
| if (result.hasException()) { |
| Throwable e = result.getException(); |
| // Record common exception. |
| Tracer.traceEntry(e, interfaceEntry); |
| Tracer.traceEntry(e, methodEntry); |
| } |
| return result; |
| } catch (BlockException e) { |
| return DubboFallbackRegistry.getProviderFallback().handle(invoker, invocation, e); |
| } catch (RpcException e) { |
| Tracer.traceEntry(e, interfaceEntry); |
| Tracer.traceEntry(e, methodEntry); |
| throw e; |
| } finally { |
| if (methodEntry != null) { |
| methodEntry.exit(1, invocation.getArguments()); |
| } |
| if (interfaceEntry != null) { |
| interfaceEntry.exit(); |
| } |
| ContextUtil.exit(); |
| } |
| } |
| } |