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50 lines
1.2 KiB
50 lines
1.2 KiB
// Copyright © 2024 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 redispubsub
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import (
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"context"
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"github.com/redis/go-redis/v9"
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)
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var ctx = context.Background()
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type Subscriber struct {
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client redis.UniversalClient
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channel string
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}
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func NewSubscriber(client redis.UniversalClient, channel string) *Subscriber {
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return &Subscriber{client: client, channel: channel}
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}
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func (s *Subscriber) OnMessage(ctx context.Context, callback func(string)) error {
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messageChannel := s.client.Subscribe(ctx, s.channel).Channel()
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go func() {
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for {
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select {
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case <-ctx.Done():
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return
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case msg := <-messageChannel:
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callback(msg.Payload)
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}
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}
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}()
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return nil
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}
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