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Optimize checkLocalConfig logic #11869

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Optimize checkLocalConfig logic #11869

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bf32067
优化checkLocalConfig逻辑
PleaseGiveMeTheCoke Mar 25, 2024
46b5cc9
修改不规范的等号和分号
PleaseGiveMeTheCoke Mar 29, 2024
90a9eaa
1. 多次校验文件是否存在
PleaseGiveMeTheCoke Apr 2, 2024
8c109d8
format
PleaseGiveMeTheCoke Apr 2, 2024
dabda8a
Merge branch 'alibaba:develop' into develop
PleaseGiveMeTheCoke Apr 29, 2024
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57 changes: 34 additions & 23 deletions client/src/main/java/com/alibaba/nacos/client/config/impl/ClientWorker.java
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Original file line number Diff line number Diff line change
Expand Up @@ -871,41 +871,52 @@ public void checkLocalConfig(CacheData cacheData) {
// Check if a failover file exists for the specified dataId, group, and tenant.
File file = LocalConfigInfoProcessor.getFailoverFile(envName, dataId, group, tenant);

// If not using local config info and a failover file exists, load and use it.
if (!cacheData.isUseLocalConfigInfo() && file.exists()) {
String content = LocalConfigInfoProcessor.getFailover(envName, dataId, group, tenant);
final String md5 = MD5Utils.md5Hex(content, Constants.ENCODE);
cacheData.setUseLocalConfigInfo(true);
cacheData.setLocalConfigInfoVersion(file.lastModified());
cacheData.setContent(content);
LOGGER.warn(
"[{}] [failover-change] failover file created. dataId={}, group={}, tenant={}, md5={}, content={}",
envName, dataId, group, tenant, md5, ContentUtils.truncateContent(content));
if (isFailOverFileCreated(cacheData, file)) {
loadAndUse(cacheData, file, true);
return;
}

// If use local config info, but the failover file is deleted, switch back to server config.
if (cacheData.isUseLocalConfigInfo() && !file.exists()) {
if (isFailOverFileDeleted(cacheData, file)) {
// switch back to server config.
cacheData.setUseLocalConfigInfo(false);
LOGGER.warn("[{}] [failover-change] failover file deleted. dataId={}, group={}, tenant={}", envName,
dataId, group, tenant);
return;
}

// When the failover file content changes, indicating a change in local configuration.
if (cacheData.isUseLocalConfigInfo() && file.exists()
&& cacheData.getLocalConfigInfoVersion() != file.lastModified()) {
String content = LocalConfigInfoProcessor.getFailover(envName, dataId, group, tenant);
final String md5 = MD5Utils.md5Hex(content, Constants.ENCODE);
cacheData.setUseLocalConfigInfo(true);
cacheData.setLocalConfigInfoVersion(file.lastModified());
cacheData.setContent(content);
LOGGER.warn(
"[{}] [failover-change] failover file changed. dataId={}, group={}, tenant={}, md5={}, content={}",
envName, dataId, group, tenant, md5, ContentUtils.truncateContent(content));
if (isFailOverFileChanged(cacheData, file)) {
loadAndUse(cacheData, file, false);
}
}

private void loadAndUse(CacheData cacheData, File file, boolean failOverFileCreated) {
String content = LocalConfigInfoProcessor.getFailover(cacheData.envName, cacheData.dataId, cacheData.group,
tenant);
final String md5 = MD5Utils.md5Hex(content, Constants.ENCODE);
cacheData.setUseLocalConfigInfo(true);
cacheData.setLocalConfigInfoVersion(file.lastModified());
cacheData.setContent(content);
LOGGER.warn("[{}] [failover-change] failover file {}. dataId={}, group={}, tenant={}, md5={}, content={}",
failOverFileCreated ? "created" : "changed", cacheData.envName, cacheData.dataId, cacheData.group,
tenant, md5, ContentUtils.truncateContent(content));
}

private boolean isFailOverFileCreated(CacheData cacheData, File file) {
// not using local config info, but a failover file exists
return !cacheData.isUseLocalConfigInfo() && file.exists();
}

private boolean isFailOverFileChanged(CacheData cacheData, File file) {
// using local config info, but there is a change in local configuration
return cacheData.isUseLocalConfigInfo() && file.exists()
&& cacheData.getLocalConfigInfoVersion() != file.lastModified();
}

private boolean isFailOverFileDeleted(CacheData cacheData, File file) {
// using local config info, but the failover file is deleted
return cacheData.isUseLocalConfigInfo() && !file.exists();
}

private ExecutorService ensureSyncExecutor(String taskId) {
if (!multiTaskExecutor.containsKey(taskId)) {
multiTaskExecutor.put(taskId,
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