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Try update value if node already exists #2314

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merged 3 commits into from
Jun 3, 2023
Merged

Try update value if node already exists #2314

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e5ddd57
Try update value if node already exists
chickenlj May 16, 2023
5b2397c
fix variable declaration shadow.
chickenlj May 16, 2023
825a21f
Merge branch 'main' into fix-zookeeper-pushconfig
chickenlj May 31, 2023
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9 changes: 9 additions & 0 deletions config_center/zookeeper/impl.go
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,15 @@ func (c *zookeeperDynamicConfiguration) PublishConfig(key string, group string,
// create every node in the path with given value which we may not expected.
err := c.client.CreateWithValue(path, valueBytes)
if err != nil {
// try update value if node already exists
if perrors.Is(err, zk.ErrNodeExists) {
_, stat, _ := c.client.GetContent(path)
_, setErr := c.client.SetContent(path, valueBytes, stat.Version)
if setErr != nil {
return perrors.WithStack(setErr)
}
return nil
}
return perrors.WithStack(err)
}
return nil
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3 changes: 1 addition & 2 deletions remoting/zookeeper/listener.go
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Expand Up @@ -344,8 +344,7 @@ func (l *ZkEventListener) listenDirEvent(conf *common.URL, zkRootPath string, li
failTimes = MaxFailTimes
}

err = perrors.Cause(err)
if !strings.Contains(err.Error(), "node does not exist") { // ignore if node not exist
if !perrors.Is(err, zk.ErrNoNode) { // ignore if node not exist
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@AlexStocks AlexStocks May 16, 2023 •
edited
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@chickenlj 这个地方我有异议，这个地方不需要修改啊，原来的没啥问题。你修改后，会不会遗漏一些case就不晓得了。

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实际上，上面的字符串关键字 node does not exist 也是从 ErrNoNode 定义中取的，因此两者能检查的范围应该是一致的。

ErrNoNode = errors.New("zk: node does not exist")

perrors.Is 文档说是会嵌套往下检查，理论上与应该没啥问题。

logger.Errorf("[Zookeeper EventListener][listenDirEvent] Get children of path {%s} with watcher failed, the error is %+v", zkRootPath, err)
}
// Maybe the provider does not ready yet, sleep failTimes * ConnDelay senconds to wait
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