本文整理汇总了Golang中github.com/youtube/vitess/go/vt/topo.Impl.GetKnownCells方法的典型用法代码示例。如果您正苦于以下问题：Golang Impl.GetKnownCells方法的具体用法？Golang Impl.GetKnownCells怎么用？Golang Impl.GetKnownCells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.Impl的用法示例。
在下文中一共展示了Impl.GetKnownCells方法的2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: getLocalCell
func getLocalCell(ctx context.Context, t *testing.T, ts topo.Impl) string {
cells, err := ts.GetKnownCells(ctx)
if err != nil {
t.Fatalf("GetKnownCells: %v", err)
}
if len(cells) < 1 {
t.Fatalf("provided topo.Impl doesn't have enough cells (need at least 1): %v", cells)
}
return cells[0]
}示例2: CopyTablets
// CopyTablets will create the tablets in the destination topo
func CopyTablets(ctx context.Context, fromTS, toTS topo.Impl) {
cells, err := fromTS.GetKnownCells(ctx)
if err != nil {
log.Fatalf("fromTS.GetKnownCells: %v", err)
}
tts := topo.Server{
Impl: toTS,
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, cell := range cells {
wg.Add(1)
go func(cell string) {
defer wg.Done()
tabletAliases, err := fromTS.GetTabletsByCell(ctx, cell)
if err != nil {
rec.RecordError(fmt.Errorf("GetTabletsByCell(%v): %v", cell, err))
} else {
for _, tabletAlias := range tabletAliases {
wg.Add(1)
go func(tabletAlias *topodatapb.TabletAlias) {
defer wg.Done()
// read the source tablet
tablet, _, err := fromTS.GetTablet(ctx, tabletAlias)
if err != nil {
rec.RecordError(fmt.Errorf("GetTablet(%v): %v", tabletAlias, err))
return
}
// try to create the destination
err = toTS.CreateTablet(ctx, tablet)
if err == topo.ErrNodeExists {
// update the destination tablet
log.Warningf("tablet %v already exists, updating it", tabletAlias)
_, err = tts.UpdateTabletFields(ctx, tablet.Alias, func(t *topodatapb.Tablet) error {
*t = *tablet
return nil
})
}
if err != nil {
rec.RecordError(fmt.Errorf("CreateTablet(%v): %v", tabletAlias, err))
return
}
}(tabletAlias)
}
}
}(cell)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyTablets failed: %v", rec.Error())
}
}