mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-02 11:59:00 +08:00
53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package master
|
|
|
|
import (
|
|
"github.com/zilliztech/milvus-distributed/internal/kv"
|
|
)
|
|
|
|
type IDAllocator interface {
|
|
Alloc(count uint32) (UniqueID, UniqueID, error)
|
|
AllocOne() (UniqueID, error)
|
|
UpdateID() error
|
|
}
|
|
|
|
// GlobalTSOAllocator is the global single point TSO allocator.
|
|
type GlobalIDAllocator struct {
|
|
allocator Allocator
|
|
}
|
|
|
|
func NewGlobalIDAllocator(key string, base kv.TxnBase) *GlobalIDAllocator {
|
|
return &GlobalIDAllocator{
|
|
allocator: NewGlobalTSOAllocator(key, base),
|
|
}
|
|
}
|
|
|
|
// Initialize will initialize the created global TSO allocator.
|
|
func (gia *GlobalIDAllocator) Initialize() error {
|
|
return gia.allocator.Initialize()
|
|
}
|
|
|
|
// GenerateTSO is used to generate a given number of TSOs.
|
|
// Make sure you have initialized the TSO allocator before calling.
|
|
func (gia *GlobalIDAllocator) Alloc(count uint32) (UniqueID, UniqueID, error) {
|
|
timestamp, err := gia.allocator.GenerateTSO(count)
|
|
if err != nil {
|
|
return 0, 0, err
|
|
}
|
|
idStart := UniqueID(timestamp)
|
|
idEnd := idStart + int64(count)
|
|
return idStart, idEnd, nil
|
|
}
|
|
|
|
func (gia *GlobalIDAllocator) AllocOne() (UniqueID, error) {
|
|
timestamp, err := gia.allocator.GenerateTSO(1)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
idStart := UniqueID(timestamp)
|
|
return idStart, nil
|
|
}
|
|
|
|
func (gia *GlobalIDAllocator) UpdateID() error {
|
|
return gia.allocator.UpdateTSO()
|
|
}
|