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https://gitee.com/milvus-io/milvus.git
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78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package datacoord
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import (
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"context"
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"github.com/milvus-io/milvus/internal/types"
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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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)
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// allocator is the interface for allocating `UniqueID` or `Timestamp`
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type allocator interface {
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allocTimestamp(context.Context) (Timestamp, error)
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allocID(context.Context) (UniqueID, error)
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}
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var _ allocator = (*rootCoordAllocator)(nil)
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// rootCoordAllocator use RootCoord as allocator
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type rootCoordAllocator struct {
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types.RootCoord
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}
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// newRootCoordAllocator get an allocator from RootCoord
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func newRootCoordAllocator(rootCoordClient types.RootCoord) allocator {
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return &rootCoordAllocator{
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RootCoord: rootCoordClient,
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}
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}
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// allocTimestamp allocate a Timestamp
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// invoking RootCoord `AllocTimestamp`
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func (alloc *rootCoordAllocator) allocTimestamp(ctx context.Context) (Timestamp, error) {
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resp, err := alloc.AllocTimestamp(ctx, &rootcoordpb.AllocTimestampRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_RequestTSO,
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MsgID: 0,
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Timestamp: 0,
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SourceID: Params.NodeID,
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},
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Count: 1,
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})
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if err = VerifyResponse(resp, err); err != nil {
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return 0, err
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}
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return resp.Timestamp, nil
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}
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// allocID allocate an `UniqueID` from RootCoord, invoking AllocID grpc
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func (alloc *rootCoordAllocator) allocID(ctx context.Context) (UniqueID, error) {
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resp, err := alloc.AllocID(ctx, &rootcoordpb.AllocIDRequest{
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Base: &commonpb.MsgBase{
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MsgType: commonpb.MsgType_RequestID,
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MsgID: 0,
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Timestamp: 0,
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SourceID: Params.NodeID,
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},
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Count: 1,
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})
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if err = VerifyResponse(resp, err); 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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