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62 lines
2.3 KiB
Go
62 lines
2.3 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 msgstream
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import (
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"context"
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"fmt"
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"math/rand"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/mq/msgstream/mqwrapper"
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)
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// unsubscribeChannels create consumer first, and unsubscribe channel through msgStream.close()
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// TODO use streamnative pulsarctl
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func UnsubscribeChannels(ctx context.Context, factory Factory, subName string, channels []string) {
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log.Info("unsubscribe channel", zap.String("subname", subName), zap.Any("channels", channels))
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err := factory.NewMsgStreamDisposer(ctx)(channels, subName)
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if err != nil {
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log.Warn("failed to unsubscribe channels", zap.String("subname", subName), zap.Any("channels", channels), zap.Error(err))
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panic(err)
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}
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}
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func GetChannelLatestMsgID(ctx context.Context, factory Factory, channelName string) ([]byte, error) {
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dmlStream, err := factory.NewMsgStream(ctx)
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if err != nil {
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log.Warn("fail to NewMsgStream", zap.String("channelName", channelName), zap.Error(err))
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return nil, err
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}
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defer dmlStream.Close()
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subName := fmt.Sprintf("get-latest_msg_id-%s-%d", channelName, rand.Int())
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err = dmlStream.AsConsumer(ctx, []string{channelName}, subName, mqwrapper.SubscriptionPositionUnknown)
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if err != nil {
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log.Warn("fail to AsConsumer", zap.String("channelName", channelName), zap.Error(err))
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return nil, err
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}
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id, err := dmlStream.GetLatestMsgID(channelName)
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if err != nil {
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log.Error("fail to GetLatestMsgID", zap.String("channelName", channelName), zap.Error(err))
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return nil, err
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}
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return id.Serialize(), nil
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}
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