milvus/internal/rootcoord/has_collection_task.go

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// 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 rootcoord
import (
"context"
"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
"github.com/milvus-io/milvus/pkg/util/merr"
)
// hasCollectionTask has collection request task
type hasCollectionTask struct {
baseTask
Req *milvuspb.HasCollectionRequest
Rsp *milvuspb.BoolResponse
}
func (t *hasCollectionTask) Prepare(ctx context.Context) error {
if err := CheckMsgType(t.Req.Base.MsgType, commonpb.MsgType_HasCollection); err != nil {
return err
}
return nil
}
// Execute task execution
func (t *hasCollectionTask) Execute(ctx context.Context) error {
t.Rsp.Status = merr.Success()
ts := getTravelTs(t.Req)
// TODO: what if err != nil && common.IsCollectionNotExistError == false, should we consider this RPC as failure?
_, err := t.core.meta.GetCollectionByName(ctx, t.Req.GetDbName(), t.Req.GetCollectionName(), ts)
t.Rsp.Value = err == nil
return nil
}
func (t *hasCollectionTask) GetLockerKey() LockerKey {
return NewLockerKeyChain(
NewClusterLockerKey(false),
NewDatabaseLockerKey(t.Req.GetDbName(), false),
)
}