mirror of
https://github.com/openimsdk/open-im-server.git
synced 2025-04-05 20:11:14 +08:00
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
// Copyright © 2023 OpenIM. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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 kafka
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import (
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"context"
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"github.com/IBM/sarama"
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"github.com/openimsdk/tools/errs"
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"google.golang.org/protobuf/proto"
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)
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// Producer represents a Kafka producer.
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type Producer struct {
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addr []string
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topic string
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config *sarama.Config
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producer sarama.SyncProducer
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}
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func NewKafkaProducer(config *sarama.Config, addr []string, topic string) (*Producer, error) {
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producer, err := NewProducer(config, addr)
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if err != nil {
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return nil, err
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}
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return &Producer{
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addr: addr,
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topic: topic,
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config: config,
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producer: producer,
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}, nil
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}
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// SendMessage sends a message to the Kafka topic configured in the Producer.
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func (p *Producer) SendMessage(ctx context.Context, key string, msg proto.Message) (int32, int64, error) {
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// Marshal the protobuf message
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bMsg, err := proto.Marshal(msg)
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if err != nil {
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return 0, 0, errs.WrapMsg(err, "kafka proto Marshal err")
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}
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if len(bMsg) == 0 {
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return 0, 0, errs.WrapMsg(errEmptyMsg, "kafka proto Marshal err")
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}
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// Prepare Kafka message
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kMsg := &sarama.ProducerMessage{
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Topic: p.topic,
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Key: sarama.StringEncoder(key),
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Value: sarama.ByteEncoder(bMsg),
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}
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// Validate message key and value
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if kMsg.Key.Length() == 0 || kMsg.Value.Length() == 0 {
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return 0, 0, errs.Wrap(errEmptyMsg)
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}
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// Attach context metadata as headers
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header, err := GetMQHeaderWithContext(ctx)
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if err != nil {
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return 0, 0, err
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}
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kMsg.Headers = header
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// Send the message
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partition, offset, err := p.producer.SendMessage(kMsg)
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if err != nil {
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return 0, 0, errs.WrapMsg(err, "p.producer.SendMessage error")
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}
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return partition, offset, nil
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}
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