本文整理汇总了Golang中github.com/youtube/vitess/go/vt/topo.KeyspaceInfo.Version方法的典型用法代码示例。如果您正苦于以下问题：Golang KeyspaceInfo.Version方法的具体用法？Golang KeyspaceInfo.Version怎么用？Golang KeyspaceInfo.Version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/vt/topo.KeyspaceInfo的用法示例。
在下文中一共展示了KeyspaceInfo.Version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: UpdateKeyspace
// UpdateKeyspace is part of the topo.Server interface
func (tee *Tee) UpdateKeyspace(ctx context.Context, ki *topo.KeyspaceInfo, existingVersion int64) (newVersion int64, err error) {
if newVersion, err = tee.primary.UpdateKeyspace(ctx, ki, existingVersion); err != nil {
// failed on primary, not updating secondary
return
}
// if we have a mapping between keyspace version in first topo
// and keyspace version in second topo, replace the version number.
// if not, this will probably fail and log.
tee.mu.Lock()
kvm, ok := tee.keyspaceVersionMapping[ki.KeyspaceName()]
if ok && kvm.readFromVersion == existingVersion {
existingVersion = kvm.readFromSecondVersion
delete(tee.keyspaceVersionMapping, ki.KeyspaceName())
}
tee.mu.Unlock()
if newVersion2, serr := tee.secondary.UpdateKeyspace(ctx, ki, existingVersion); serr != nil {
// not critical enough to fail
if serr == topo.ErrNoNode {
// the keyspace doesn't exist on the secondary, let's
// just create it
if serr = tee.secondary.CreateKeyspace(ctx, ki.KeyspaceName(), ki.Keyspace); serr != nil {
log.Warningf("secondary.CreateKeyspace(%v) failed (after UpdateKeyspace returned ErrNoNode): %v", ki.KeyspaceName(), serr)
} else {
log.Infof("secondary.UpdateKeyspace(%v) failed with ErrNoNode, CreateKeyspace then worked.", ki.KeyspaceName())
ki, gerr := tee.secondary.GetKeyspace(ctx, ki.KeyspaceName())
if gerr != nil {
log.Warningf("Failed to re-read keyspace(%v) after creating it on secondary: %v", ki.KeyspaceName(), gerr)
} else {
tee.mu.Lock()
tee.keyspaceVersionMapping[ki.KeyspaceName()] = versionMapping{
readFromVersion: newVersion,
readFromSecondVersion: ki.Version(),
}
tee.mu.Unlock()
}
}
} else {
log.Warningf("secondary.UpdateKeyspace(%v) failed: %v", ki.KeyspaceName(), serr)
}
} else {
tee.mu.Lock()
tee.keyspaceVersionMapping[ki.KeyspaceName()] = versionMapping{
readFromVersion: newVersion,
readFromSecondVersion: newVersion2,
}
tee.mu.Unlock()
}
return
}