mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 21:09:06 +08:00
4e5f1d5f75
The import is dependent on syncTask, which in turn relies on the allocator. This PR pre-allocate the necessary IDs for import syncTask. issue: https://github.com/milvus-io/milvus/issues/33957 --------- Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Licensed to the LF AI & Data foundation under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package allocator
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
)
|
|
|
|
// localAllocator implements the Interface.
|
|
// It is constructed from a range of IDs.
|
|
// Once all IDs are allocated, an error will be returned.
|
|
type localAllocator struct {
|
|
mu sync.Mutex
|
|
idStart int64
|
|
idEnd int64
|
|
}
|
|
|
|
func NewLocalAllocator(start, end int64) Interface {
|
|
return &localAllocator{
|
|
idStart: start,
|
|
idEnd: end,
|
|
}
|
|
}
|
|
|
|
func (a *localAllocator) Alloc(count uint32) (int64, int64, error) {
|
|
cnt := int64(count)
|
|
if cnt <= 0 {
|
|
return 0, 0, fmt.Errorf("non-positive count is not allowed, count=%d", cnt)
|
|
}
|
|
a.mu.Lock()
|
|
defer a.mu.Unlock()
|
|
if a.idStart+cnt > a.idEnd {
|
|
return 0, 0, fmt.Errorf("ID is exhausted, start=%d, end=%d, count=%d", a.idStart, a.idEnd, cnt)
|
|
}
|
|
start := a.idStart
|
|
a.idStart += cnt
|
|
return start, start + cnt, nil
|
|
}
|
|
|
|
func (a *localAllocator) AllocOne() (int64, error) {
|
|
start, _, err := a.Alloc(1)
|
|
return start, err
|
|
}
|