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https://github.com/mainflux/mainflux.git
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44 lines
785 B
Go
44 lines
785 B
Go
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// Copyright (c) Mainflux
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// SPDX-License-Identifier: Apache-2.0
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package mqtt
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import (
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"errors"
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"time"
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mqtt "github.com/eclipse/paho.mqtt.golang"
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)
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const (
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protocol = "mqtt"
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id = "mqtt-publisher"
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qos = 1
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)
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var errConnect = errors.New("failed to connect to MQTT broker")
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func newClient(address string, timeout time.Duration) (mqtt.Client, error) {
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opts := mqtt.NewClientOptions().
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AddBroker(address).
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SetUsername(id).
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SetPassword(id).
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SetClientID(id).
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SetCleanSession(false)
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client := mqtt.NewClient(opts)
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token := client.Connect()
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if token.Error() != nil {
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return nil, token.Error()
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}
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ok := token.WaitTimeout(timeout)
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if ok && token.Error() != nil {
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return nil, token.Error()
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}
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if !ok {
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return nil, errConnect
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}
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return client, nil
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}
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