本文整理汇总了Golang中github.com/cockroachdb/cockroach/pkg/internal/client.Txn.GetProto方法的典型用法代码示例。如果您正苦于以下问题：Golang Txn.GetProto方法的具体用法？Golang Txn.GetProto怎么用？Golang Txn.GetProto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/cockroachdb/cockroach/pkg/internal/client.Txn的用法示例。
在下文中一共展示了Txn.GetProto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: getDescriptor
func getDescriptor(
txn *client.Txn, plainKey sqlbase.DescriptorKey, descriptor sqlbase.DescriptorProto,
) (bool, error) {
gr, err := txn.Get(plainKey.Key())
if err != nil {
return false, err
}
if !gr.Exists() {
return false, nil
}
descKey := sqlbase.MakeDescMetadataKey(sqlbase.ID(gr.ValueInt()))
desc := &sqlbase.Descriptor{}
if err := txn.GetProto(descKey, desc); err != nil {
return false, err
}
switch t := descriptor.(type) {
case *sqlbase.TableDescriptor:
table := desc.GetTable()
if table == nil {
return false, errors.Errorf("%q is not a table", plainKey.Name())
}
table.MaybeUpgradeFormatVersion()
// TODO(dan): Write the upgraded TableDescriptor back to kv. This will break
// the ability to use a previous version of cockroach with the on-disk data,
// but it's worth it to avoid having to do the upgrade every time the
// descriptor is fetched. Our current test for this enforces compatibility
// backward and forward, so that'll have to be extended before this is done.
if err := table.Validate(txn); err != nil {
return false, err
}
*t = *table
case *sqlbase.DatabaseDescriptor:
database := desc.GetDatabase()
if database == nil {
return false, errors.Errorf("%q is not a database", plainKey.Name())
}
if err := database.Validate(); err != nil {
return false, err
}
*t = *database
}
return true, nil
}