本文整理汇总了Golang中github.com/youtube/vitess/go/zk.Conn.ChildrenW方法的典型用法代码示例。如果您正苦于以下问题：Golang Conn.ChildrenW方法的具体用法？Golang Conn.ChildrenW怎么用？Golang Conn.ChildrenW使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/youtube/vitess/go/zk.Conn的用法示例。
在下文中一共展示了Conn.ChildrenW方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: refreshSomeValues
// return a few values that need to be refreshed
func (zkc *ZkCache) refreshSomeValues(zconn zk.Conn, maxToRefresh int) {
// build a list of a few values we want to refresh
refreshThreshold := time.Now().Add(-10 * time.Minute)
// range will randomize the traversal order, so we will not always try
// the same entries in the same order
dataEntries := make([]*zkCacheEntry, 0, maxToRefresh)
childrenEntries := make([]*zkCacheEntry, 0, maxToRefresh)
zkc.mutex.Lock()
for _, entry := range zkc.Cache {
shouldBeDataRefreshed, shouldBeChildrenRefreshed := entry.checkForRefresh(refreshThreshold)
if shouldBeDataRefreshed {
dataEntries = append(dataEntries, entry)
}
if shouldBeChildrenRefreshed {
childrenEntries = append(childrenEntries, entry)
}
// check if we have enough work to do
if len(dataEntries) == maxToRefresh || len(childrenEntries) == maxToRefresh {
break
}
}
zkc.mutex.Unlock()
// now refresh the values
for _, entry := range dataEntries {
data, stat, watch, err := zconn.GetW(entry.node.Path)
if err == nil {
zkStat := &zk.ZkStat{}
zkStat.FromZookeeperStat(stat)
entry.updateData(data, zkStat, watch)
} else if zookeeper.IsError(err, zookeeper.ZCLOSING) {
// connection is closing, no point in asking for more
relog.Warning("failed to refresh cache: %v (and stopping refresh)", err.Error())
return
} else {
// individual failure
relog.Warning("failed to refresh cache: %v", err.Error())
}
}
for _, entry := range childrenEntries {
children, stat, watch, err := zconn.ChildrenW(entry.node.Path)
if err == nil {
zkStat := &zk.ZkStat{}
zkStat.FromZookeeperStat(stat)
entry.updateChildren(children, zkStat, watch)
} else if zookeeper.IsError(err, zookeeper.ZCLOSING) {
// connection is closing, no point in asking for more
relog.Warning("failed to refresh cache: %v (and stopping refresh)", err.Error())
return
} else {
// individual failure
relog.Warning("failed to refresh cache: %v", err.Error())
}
}
}