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增加数据库主备自动切换功能

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This commit is contained in:
wanggeng 2021-11-29 15:43:37 +08:00
parent 6b4e43b159
commit 87a4d7270b
1 changed files with 5 additions and 8 deletions
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13
common/src/main/java/ink/wgink/common/datasource/StandbyDataSource.java
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@ -46,8 +46,7 @@ public class StandbyDataSource extends DruidDataSource implements InitializingBe
/**
* 备库url连接
*/
private String[] standbyUrls;
private volatile int standbyIndex = 0;
private String standbyUrl;
@Override
public void init() throws SQLException {
@ -56,7 +55,7 @@ public class StandbyDataSource extends DruidDataSource implements InitializingBe
// 第一次初始化
if (!lastInited && inited) {
// 如果没有配置，不启用主备切换
if (standbyUrls == null || standbyUrls.length == 0) {
if (standbyUrl == null) {
return;
}
scheduledExecutorService.schedule(new ValidateUrlTask(), 1, TimeUnit.SECONDS);
@ -79,10 +78,8 @@ public class StandbyDataSource extends DruidDataSource implements InitializingBe
//如果这个数据源已经被初始化了,同时连接异常才进行处理
if (isInited() && !isConnectionActive()) {
// 主库有问题时，切换备库
LOG.debug("Change standby urls, index:{}", standbyIndex);
String standbyUrl = standbyUrls[standbyIndex];
LOG.debug("Change standby urls");
changeUrl(standbyUrl);
standbyIndex++;
break;
}
try {
@ -105,8 +102,8 @@ public class StandbyDataSource extends DruidDataSource implements InitializingBe
setUrl(url);
}
public void setStandbyUrls(String[] standbyUrls) {
this.standbyUrls = standbyUrls;
public void setStandbyUrl(String standbyUrl) {
this.standbyUrl = standbyUrl;
}
/**