milvus/internal/util/mqclient/message.go
edward.zeng 000c675c7a
[skip e2e] Update mqclient message util license (#14598)
Signed-off-by: Edward Zeng <jie.zeng@zilliz.com>
2021-12-30 14:51:32 +08:00

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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 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
}