mirror of https://github.com/milvus-io/milvus.git
122 lines
4.3 KiB
Go
122 lines
4.3 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 rootcoord
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import (
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"context"
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"fmt"
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"github.com/cockroachdb/errors"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
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"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
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pb "github.com/milvus-io/milvus/internal/proto/etcdpb"
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"github.com/milvus-io/milvus/internal/util/proxyutil"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/util/merr"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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type dropCollectionTask struct {
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baseTask
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Req *milvuspb.DropCollectionRequest
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}
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func (t *dropCollectionTask) validate() error {
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if err := CheckMsgType(t.Req.GetBase().GetMsgType(), commonpb.MsgType_DropCollection); err != nil {
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return err
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}
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if t.core.meta.IsAlias(t.Req.GetDbName(), t.Req.GetCollectionName()) {
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return fmt.Errorf("cannot drop the collection via alias = %s", t.Req.CollectionName)
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}
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return nil
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}
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func (t *dropCollectionTask) Prepare(ctx context.Context) error {
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return t.validate()
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}
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func (t *dropCollectionTask) Execute(ctx context.Context) error {
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// use max ts to check if latest collection exists.
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// we cannot handle case that
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// dropping collection with `ts1` but a collection exists in catalog with newer ts which is bigger than `ts1`.
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// fortunately, if ddls are promised to execute in sequence, then everything is OK. The `ts1` will always be latest.
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collMeta, err := t.core.meta.GetCollectionByName(ctx, t.Req.GetDbName(), t.Req.GetCollectionName(), typeutil.MaxTimestamp)
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if errors.Is(err, merr.ErrCollectionNotFound) {
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// make dropping collection idempotent.
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log.Warn("drop non-existent collection", zap.String("collection", t.Req.GetCollectionName()))
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return nil
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}
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if err != nil {
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return err
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}
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// meta cache of all aliases should also be cleaned.
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aliases := t.core.meta.ListAliasesByID(collMeta.CollectionID)
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ts := t.GetTs()
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redoTask := newBaseRedoTask(t.core.stepExecutor)
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redoTask.AddSyncStep(&expireCacheStep{
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baseStep: baseStep{core: t.core},
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dbName: t.Req.GetDbName(),
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collectionNames: append(aliases, collMeta.Name),
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collectionID: collMeta.CollectionID,
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ts: ts,
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opts: []proxyutil.ExpireCacheOpt{proxyutil.SetMsgType(commonpb.MsgType_DropCollection)},
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})
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redoTask.AddSyncStep(&changeCollectionStateStep{
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baseStep: baseStep{core: t.core},
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collectionID: collMeta.CollectionID,
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state: pb.CollectionState_CollectionDropping,
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ts: ts,
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})
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redoTask.AddAsyncStep(&releaseCollectionStep{
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baseStep: baseStep{core: t.core},
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collectionID: collMeta.CollectionID,
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})
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redoTask.AddAsyncStep(&dropIndexStep{
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baseStep: baseStep{core: t.core},
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collID: collMeta.CollectionID,
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partIDs: nil,
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})
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redoTask.AddAsyncStep(&deleteCollectionDataStep{
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baseStep: baseStep{core: t.core},
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coll: collMeta,
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isSkip: t.Req.GetBase().GetReplicateInfo().GetIsReplicate(),
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})
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redoTask.AddAsyncStep(&removeDmlChannelsStep{
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baseStep: baseStep{core: t.core},
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pChannels: collMeta.PhysicalChannelNames,
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})
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redoTask.AddAsyncStep(newConfirmGCStep(t.core, collMeta.CollectionID, allPartition))
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redoTask.AddAsyncStep(&deleteCollectionMetaStep{
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baseStep: baseStep{core: t.core},
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collectionID: collMeta.CollectionID,
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// This ts is less than the ts when we notify data nodes to drop collection, but it's OK since we have already
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// marked this collection as deleted. If we want to make this ts greater than the notification's ts, we should
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// wrap a step who will have these three children and connect them with ts.
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ts: ts,
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})
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return redoTask.Execute(ctx)
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}
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