43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package consumer
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import (
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"context"
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"io"
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"time"
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"gitlab.com/go-course-project/go17/devcloud-mini/maudit/apps/event"
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)
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// 读取消息，处理消息
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func (c *consumer) Run(ctx context.Context) error {
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for {
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m, err := c.reader.FetchMessage(ctx)
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if err != nil {
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if err == io.EOF {
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c.log.Info().Msg("reader closed")
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return nil
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}
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c.log.Error().Msgf("featch message error, %s", err)
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time.Sleep(5 * time.Second)
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continue
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}
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// 处理消息
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e := event.NewEvent()
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c.log.Debug().Msgf("message at topic/partition/offset %v/%v/%v", m.Topic, m.Partition, m.Offset)
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// 发送的数据时Json格式, 接收用的JSON, 发送也需要使用JSON
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err = e.Load(m.Value)
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if err == nil {
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if err := event.GetService().SaveEvent(ctx, event.NewEventSet().Add(e)); err != nil {
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c.log.Error().Msgf("save event error, %s", err)
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}
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}
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// 处理完消息后需要提交该消息已经消费完成, 消费者挂掉后保存消息消费的状态
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if err := c.reader.CommitMessages(ctx, m); err != nil {
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c.log.Error().Msgf("failed to commit messages: %s", err)
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}
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}
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}
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