| /* |
| * 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.registry.cache; |
| |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.servicecomb.registry.api.registry.Microservice; |
| import org.apache.servicecomb.registry.api.registry.MicroserviceInstance; |
| import org.apache.servicecomb.registry.DiscoveryManager; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.cache.Cache; |
| import com.google.common.cache.CacheBuilder; |
| import com.google.common.util.concurrent.UncheckedExecutionException; |
| |
| /** |
| * 微服务实例缓存 key为:serviceId@instanceId 缓存limit:1000 缓存老化策略:30分钟没有访问就过期。 |
| * |
| */ |
| public class MicroserviceInstanceCache { |
| |
| private static final Logger logger = LoggerFactory.getLogger(MicroserviceInstanceCache.class); |
| |
| private static final Cache<String, MicroserviceInstance> instances = CacheBuilder.newBuilder() |
| .maximumSize(1000) |
| .expireAfterAccess(30, TimeUnit.MINUTES) |
| .build(); |
| |
| private static final Cache<String, Microservice> microservices = CacheBuilder.newBuilder() |
| .maximumSize(1000) |
| .expireAfterAccess(30, TimeUnit.MINUTES) |
| .build(); |
| |
| public static Microservice getOrCreate(String serviceId) { |
| try { |
| return microservices.get(serviceId, () -> { |
| Microservice microservice = DiscoveryManager.INSTANCE.getMicroservice(serviceId); |
| if (microservice == null) { |
| throw new IllegalArgumentException("service id not exists."); |
| } |
| return microservice; |
| }); |
| } catch (ExecutionException | UncheckedExecutionException e) { |
| logger.error("get microservice from cache failed, {}, {}", serviceId, e.getMessage()); |
| return null; |
| } |
| } |
| |
| public static MicroserviceInstance getOrCreate(String serviceId, String instanceId) { |
| try { |
| String key = String.format("%s@%s", serviceId, instanceId); |
| return instances.get(key, () -> { |
| MicroserviceInstance instance = DiscoveryManager.INSTANCE.getMicroserviceInstance(serviceId, instanceId); |
| if (instance == null) { |
| throw new IllegalArgumentException("instance id not exists."); |
| } |
| return instance; |
| }); |
| } catch (ExecutionException | UncheckedExecutionException e) { |
| logger.error("get microservice instance from cache failed, {}, {}", String.format("%s@%s", serviceId, instanceId), |
| e.getMessage()); |
| return null; |
| } |
| } |
| } |