mirror of
https://gitee.com/milvus-io/milvus.git
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112 lines
3.0 KiB
Go
112 lines
3.0 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package datanode
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import (
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"context"
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"errors"
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"path"
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"strconv"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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"github.com/milvus-io/milvus/internal/proto/rootcoordpb"
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"github.com/milvus-io/milvus/internal/types"
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)
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type allocatorInterface interface {
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allocID() (UniqueID, error)
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allocIDBatch(count uint32) (UniqueID, uint32, error)
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genKey(ids ...UniqueID) (key string, err error)
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}
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type allocator struct {
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rootCoord types.RootCoord
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}
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// check if allocator implements allocatorInterface
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var _ allocatorInterface = &allocator{}
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func newAllocator(s types.RootCoord) *allocator {
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return &allocator{
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rootCoord: s,
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}
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}
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// allocID allocates one ID from rootCoord
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func (alloc *allocator) allocID() (UniqueID, error) {
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ctx := context.TODO()
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resp, err := alloc.rootCoord.AllocID(ctx, &rootcoordpb.AllocIDRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_RequestID,
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MsgID: 1, // GOOSE TODO
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Timestamp: 0, // GOOSE TODO
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SourceID: Params.DataNodeCfg.NodeID,
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},
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Count: 1,
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})
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if resp.Status.ErrorCode != commonpb.ErrorCode_Success {
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return 0, errors.New(resp.Status.GetReason())
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}
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if err != nil {
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return 0, err
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}
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return resp.ID, nil
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}
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// allocIDBatch allocates IDs in batch from rootCoord
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func (alloc *allocator) allocIDBatch(count uint32) (UniqueID, uint32, error) {
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ctx := context.Background()
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resp, err := alloc.rootCoord.AllocID(ctx, &rootcoordpb.AllocIDRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_RequestID,
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SourceID: Params.DataNodeCfg.NodeID,
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},
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Count: count,
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})
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if resp.Status.ErrorCode != commonpb.ErrorCode_Success {
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return 0, 0, errors.New(resp.Status.GetReason())
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}
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if err != nil {
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return 0, 0, err
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}
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return resp.GetID(), resp.GetCount(), nil
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}
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// genKey gives a valid key string for lists of UniqueIDs:
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func (alloc *allocator) genKey(ids ...UniqueID) (string, error) {
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idx, err := alloc.allocID()
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if err != nil {
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return "", err
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}
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ids = append(ids, idx)
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return JoinIDPath(ids...), nil
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}
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// JoinIDPath joins ids to path format.
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func JoinIDPath(ids ...UniqueID) string {
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idStr := make([]string, 0, len(ids))
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for _, id := range ids {
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idStr = append(idStr, strconv.FormatInt(id, 10))
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}
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return path.Join(idStr...)
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}
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