com.alibaba.nacos.cmdb.memory.CmdbProvider Maven / Gradle / Ivy
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/*
* 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.nacos.cmdb.memory;
import com.alibaba.fastjson.JSON;
import com.alibaba.nacos.api.cmdb.spi.CmdbService;
import com.alibaba.nacos.api.cmdb.pojo.Entity;
import com.alibaba.nacos.api.cmdb.pojo.EntityEvent;
import com.alibaba.nacos.api.cmdb.pojo.Label;
import com.alibaba.nacos.api.exception.NacosException;
import com.alibaba.nacos.cmdb.core.SwitchAndOptions;
import com.alibaba.nacos.cmdb.service.CmdbReader;
import com.alibaba.nacos.cmdb.service.CmdbWriter;
import com.alibaba.nacos.cmdb.utils.Loggers;
import com.alibaba.nacos.cmdb.utils.UtilsAndCommons;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
/**
* @author nkorange
* @since 0.7.0
*/
@Component
public class CmdbProvider implements CmdbReader, CmdbWriter {
@Autowired
private SwitchAndOptions switches;
private CmdbService cmdbService;
private ServiceLoader serviceLoader = ServiceLoader.load(CmdbService.class);
private Map> entityMap = new ConcurrentHashMap<>();
private Map labelMap = new ConcurrentHashMap<>();
private Set entityTypeSet = new HashSet<>();
private long eventTimestamp = System.currentTimeMillis();
public CmdbProvider() throws NacosException {
}
private void initCmdbService() throws NacosException {
Iterator iterator = serviceLoader.iterator();
if (iterator.hasNext()) {
cmdbService = iterator.next();
}
if (cmdbService == null && switches.isLoadDataAtStart()) {
throw new NacosException(NacosException.SERVER_ERROR, "Cannot initialize CmdbService!");
}
}
public void load() {
if (!switches.isLoadDataAtStart()) {
return;
}
// init label map:
Set labelNames = cmdbService.getLabelNames();
if (labelNames == null || labelNames.isEmpty()) {
Loggers.MAIN.warn("[LOAD] init label names failed!");
} else {
for (String labelName : labelNames) {
// If get null label, it's still ok. We will try it later when we meet this label:
labelMap.put(labelName, cmdbService.getLabel(labelName));
}
}
// init entity type set:
entityTypeSet = cmdbService.getEntityTypes();
// init entity map:
entityMap = cmdbService.getAllEntities();
}
@PostConstruct
public void init() throws NacosException {
initCmdbService();
load();
UtilsAndCommons.GLOBAL_EXECUTOR.schedule(new CmdbDumpTask(), switches.getDumpTaskInterval(), TimeUnit.SECONDS);
UtilsAndCommons.GLOBAL_EXECUTOR.schedule(new CmdbLabelTask(), switches.getLabelTaskInterval(), TimeUnit.SECONDS);
UtilsAndCommons.GLOBAL_EXECUTOR.schedule(new CmdbEventTask(), switches.getEventTaskInterval(), TimeUnit.SECONDS);
}
@Override
public Entity queryEntity(String entityName, String entityType) {
if (!entityMap.containsKey(entityType)) {
return null;
}
return entityMap.get(entityType).get(entityName);
}
@Override
public String queryLabel(String entityName, String entityType, String labelName) {
Entity entity = queryEntity(entityName, entityType);
if (entity == null) {
return null;
}
return entity.getLabels().get(labelName);
}
@Override
public List queryEntitiesByLabel(String labelName, String labelValue) {
throw new UnsupportedOperationException("Not available now!");
}
public void removeEntity(String entityName, String entityType) {
if (!entityMap.containsKey(entityType)) {
return;
}
entityMap.get(entityType).remove(entityName);
}
public void updateEntity(Entity entity) {
if (!entityTypeSet.contains(entity.getType())) {
return;
}
entityMap.get(entity.getType()).put(entity.getName(), entity);
}
public class CmdbLabelTask implements Runnable {
@Override
public void run() {
Loggers.MAIN.debug("LABEL-TASK {}", "start dump.");
if (cmdbService == null) {
return;
}
try {
Map tmpLabelMap = new HashMap<>(16);
Set labelNames = cmdbService.getLabelNames();
if (labelNames == null || labelNames.isEmpty()) {
Loggers.MAIN.warn("CMDB-LABEL-TASK {}", "load label names failed!");
} else {
for (String labelName : labelNames) {
// If get null label, it's still ok. We will try it later when we meet this label:
tmpLabelMap.put(labelName, cmdbService.getLabel(labelName));
}
if (Loggers.MAIN.isDebugEnabled()) {
Loggers.MAIN.debug("LABEL-TASK {}", "got label map:" + JSON.toJSONString(tmpLabelMap));
}
labelMap = tmpLabelMap;
}
} catch (Exception e) {
Loggers.MAIN.error("CMDB-LABEL-TASK {}", "dump failed!", e);
} finally {
UtilsAndCommons.GLOBAL_EXECUTOR.schedule(this, switches.getLabelTaskInterval(), TimeUnit.SECONDS);
}
}
}
public class CmdbDumpTask implements Runnable {
@Override
public void run() {
try {
Loggers.MAIN.debug("DUMP-TASK {}", "start dump.");
if (cmdbService == null) {
return;
}
// refresh entity map:
entityMap = cmdbService.getAllEntities();
} catch (Exception e) {
Loggers.MAIN.error("DUMP-TASK {}", "dump failed!", e);
} finally {
UtilsAndCommons.GLOBAL_EXECUTOR.schedule(this, switches.getDumpTaskInterval(), TimeUnit.SECONDS);
}
}
}
public class CmdbEventTask implements Runnable {
@Override
public void run() {
try {
Loggers.MAIN.debug("EVENT-TASK {}", "start dump.");
if (cmdbService == null) {
return;
}
long current = System.currentTimeMillis();
List events = cmdbService.getEntityEvents(eventTimestamp);
eventTimestamp = current;
if (Loggers.MAIN.isDebugEnabled()) {
Loggers.MAIN.debug("EVENT-TASK {}", "got events size:" + ", events:" + JSON.toJSONString(events));
}
if (events != null && !events.isEmpty()) {
for (EntityEvent event : events) {
switch (event.getType()) {
case ENTITY_REMOVE:
removeEntity(event.getEntityName(), event.getEntityType());
break;
case ENTITY_ADD_OR_UPDATE:
updateEntity(cmdbService.getEntity(event.getEntityName(), event.getEntityType()));
break;
default:
break;
}
}
}
} catch (Exception e) {
Loggers.MAIN.error("CMDB-EVENT {}", "event task failed!", e);
} finally {
UtilsAndCommons.GLOBAL_EXECUTOR.schedule(this, switches.getEventTaskInterval(), TimeUnit.SECONDS);
}
}
}
}