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Store.java
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Store.java
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/*
* 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.lightweight.store;
import java.time.Duration;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.apache.servicecomb.foundation.common.concurrent.ConcurrentHashMapEx;
import org.apache.servicecomb.registry.api.registry.Microservice;
import org.apache.servicecomb.registry.api.registry.MicroserviceInstance;
import org.apache.servicecomb.registry.api.registry.MicroserviceInstances;
import org.springframework.stereotype.Component;
import com.google.common.base.Ticker;
@Component
public class Store {
private Ticker ticker = Ticker.systemTicker();
private final Map<String, AppStore> appsById = new ConcurrentHashMapEx<>();
private final Map<String, MicroserviceStore> microservicesByName = new ConcurrentHashMapEx<>();
private final Map<String, MicroserviceStore> microservicesById = new ConcurrentHashMapEx<>();
private final Map<String, InstanceStore> instancesById = new ConcurrentHashMapEx<>();
public Store setTicker(Ticker ticker) {
this.ticker = ticker;
return this;
}
public AppStore getOrCreateAppStore(String appId) {
return appsById.computeIfAbsent(appId, key -> new AppStore());
}
public MicroserviceStore findMicroserviceStore(String serviceId) {
return microservicesById.get(serviceId);
}
public InstanceStore findInstanceStore(String instanceId) {
return instancesById.get(instanceId);
}
public MicroserviceStore addMicroservice(Microservice microservice, String schemasSummary) {
MicroserviceStore microserviceStore = new MicroserviceStore(ticker, microservice, schemasSummary);
getOrCreateAppStore(microservice.getAppId())
.addMicroservice(microserviceStore);
microservicesById.put(microservice.getServiceId(), microserviceStore);
microservicesByName.put(microservice.getServiceName(), microserviceStore);
return microserviceStore;
}
public InstanceStore addInstance(MicroserviceStore microserviceStore, MicroserviceInstance instance) {
InstanceStore instanceStore = microserviceStore.addInstance(instance);
instancesById.put(instance.getInstanceId(), instanceStore);
return instanceStore;
}
public InstanceStore deleteInstance(String serviceId, String instanceId) {
MicroserviceStore microserviceStore = findMicroserviceStore(serviceId);
if (microserviceStore == null) {
return null;
}
InstanceStore instanceStore = microserviceStore.deleteInstance(instanceId);
if (instanceStore != null) {
instancesById.remove(instanceId);
}
return instanceStore;
}
public Optional<Microservice> getMicroservice(String microserviceId) {
return Optional.ofNullable(microservicesById.get(microserviceId))
.map(MicroserviceStore::getMicroservice);
}
public Optional<MicroserviceInstance> getMicroserviceInstance(String instanceId) {
return Optional.ofNullable(instancesById.get(instanceId))
.map(InstanceStore::getInstance);
}
public MicroserviceInstances findServiceInstances(String appId, String serviceName, String revision) {
return Optional.ofNullable(appsById.get(appId))
.map(appStore -> appStore.findServiceInstances(serviceName, revision))
.orElse(new MicroserviceInstances()
.setMicroserviceNotExist(true));
}
public List<Microservice> getAllMicroservices() {
return microservicesByName.values().stream()
.map(MicroserviceStore::getMicroservice)
.collect(Collectors.toList());
}
public int getMicroserviceCount() {
return microservicesByName.size();
}
public int getInstanceCount() {
return instancesById.size();
}
public Stream<MicroserviceInstance> findDeadInstances(Duration timeout) {
long nanoNow = ticker.read();
long nanoTimeout = timeout.toNanos();
return instancesById.values().stream()
.filter(instanceStore -> instanceStore.isHeartBeatTimeout(nanoNow, nanoTimeout))
.map(InstanceStore::getInstance);
}
}