milvus/internal/util/mqclient/message.go
godchen a1d1b3d0b6
Add reader interface (#11973)
Signed-off-by: godchen <qingxiang.chen@zilliz.com>
2021-11-17 14:11:11 +08:00

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1.2 KiB
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// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// Licensed 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 mqclient
// ConsumerMessage is the interface that provides operations of a consumer
type Message interface {
// Topic get the topic from which this message originated from
Topic() string
// Properties are application defined key/value pairs that will be attached to the message.
// Return the properties attached to the message.
Properties() map[string]string
// Payload get the payload of the message
Payload() []byte
// ID get the unique message ID associated with this message.
// The message id can be used to univocally refer to a message without having the keep the entire payload in memory.
ID() MessageID
}