milvus/internal/datacoord/allocator.go

84 lines
2.7 KiB
Go
Raw Normal View History

// 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 datacoord
import (
"context"
"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
"github.com/milvus-io/milvus/internal/proto/rootcoordpb"
"github.com/milvus-io/milvus/internal/types"
"github.com/milvus-io/milvus/pkg/util/commonpbutil"
"github.com/milvus-io/milvus/pkg/util/paramtable"
)
// allocator is the interface that allocating `UniqueID` or `Timestamp`
type allocator interface {
allocTimestamp(context.Context) (Timestamp, error)
allocID(context.Context) (UniqueID, error)
}
// make sure rootCoordAllocator implements allocator interface
var _ allocator = (*rootCoordAllocator)(nil)
// rootCoordAllocator use RootCoord as allocator
2021-06-21 17:28:03 +08:00
type rootCoordAllocator struct {
types.RootCoordClient
}
// newRootCoordAllocator gets an allocator from RootCoord
func newRootCoordAllocator(rootCoordClient types.RootCoordClient) allocator {
2021-06-21 17:28:03 +08:00
return &rootCoordAllocator{
RootCoordClient: rootCoordClient,
}
}
// allocTimestamp allocates a Timestamp
// invoking RootCoord `AllocTimestamp`
func (alloc *rootCoordAllocator) allocTimestamp(ctx context.Context) (Timestamp, error) {
resp, err := alloc.AllocTimestamp(ctx, &rootcoordpb.AllocTimestampRequest{
Base: commonpbutil.NewMsgBase(
commonpbutil.WithMsgType(commonpb.MsgType_RequestTSO),
commonpbutil.WithMsgID(0),
commonpbutil.WithSourceID(paramtable.GetNodeID()),
),
Count: 1,
})
if err = VerifyResponse(resp, err); err != nil {
return 0, err
}
return resp.Timestamp, nil
}
// allocID allocates an `UniqueID` from RootCoord, invoking AllocID grpc
func (alloc *rootCoordAllocator) allocID(ctx context.Context) (UniqueID, error) {
resp, err := alloc.AllocID(ctx, &rootcoordpb.AllocIDRequest{
Base: commonpbutil.NewMsgBase(
commonpbutil.WithMsgType(commonpb.MsgType_RequestID),
commonpbutil.WithMsgID(0),
commonpbutil.WithSourceID(paramtable.GetNodeID()),
),
Count: 1,
})
if err = VerifyResponse(resp, err); err != nil {
return 0, err
}
return resp.ID, nil
}