package com.ctrip.framework.apollo.biz.service;
import com.google.common.base.Strings;
import com.google.common.collect.Maps;
import com.ctrip.framework.apollo.biz.entity.ServerConfig;
import com.ctrip.framework.apollo.biz.repository.ServerConfigRepository;
import com.ctrip.framework.apollo.common.config.RefreshablePropertySource;
import com.ctrip.framework.apollo.core.ConfigConsts;
import com.ctrip.framework.foundation.Foundation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.util.Map;
import java.util.Objects;
/**
* @author Jason Song(song_s@ctrip.com)
*/
@Component
public class BizDBPropertySource extends RefreshablePropertySource {
private static final Logger logger = LoggerFactory.getLogger(BizDBPropertySource.class);
@Autowired
private ServerConfigRepository serverConfigRepository;
public BizDBPropertySource(String name, Map<String, Object> source) {
super(name, source);
}
public BizDBPropertySource() {
super("DBConfig", Maps.newConcurrentMap());
}
String getCurrentDataCenter() {
return Foundation.server().getDataCenter();
}
@Override
protected void refresh() {
Iterable<ServerConfig> dbConfigs = serverConfigRepository.findAll();
Map<String, Object> newConfigs = Maps.newHashMap();
//default cluster's configs
for (ServerConfig config : dbConfigs) {
if (Objects.equals(ConfigConsts.CLUSTER_NAME_DEFAULT, config.getCluster())) {
newConfigs.put(config.getKey(), config.getValue());
}
}
//data center's configs
String dataCenter = getCurrentDataCenter();
for (ServerConfig config : dbConfigs) {
if (Objects.equals(dataCenter, config.getCluster())) {
newConfigs.put(config.getKey(), config.getValue());
}
}
//cluster's config
if (!Strings.isNullOrEmpty(System.getProperty(ConfigConsts.APOLLO_CLUSTER_KEY))) {
String cluster = System.getProperty(ConfigConsts.APOLLO_CLUSTER_KEY);
for (ServerConfig config : dbConfigs) {
if (Objects.equals(cluster, config.getCluster())) {
newConfigs.put(config.getKey(), config.getValue());
}
}
}
//put to environment
for (Map.Entry<String, Object> config: newConfigs.entrySet()){
String key = config.getKey();
Object value = config.getValue();
if (this.source.get(key) == null) {
logger.info("Load config from DB : {} = {}", key, value);
} else if (!Objects.equals(this.source.get(key), value)) {
logger.info("Load config from DB : {} = {}. Old value = {}", key,
value, this.source.get(key));
}
this.source.put(key, value);
}
}
}