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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package mqtt
import (
"github.com/eclipse/paho.mqtt.golang/packets"
)
// Message defines the externals that a message implementation must support
// these are received messages that are passed to the callbacks, not internal
// messages
type Message interface {
Duplicate() bool
Qos() byte
Retained() bool
Topic() string
MessageID() uint16
Payload() []byte
}
type message struct {
duplicate bool
qos byte
retained bool
topic string
messageID uint16
payload []byte
}
func (m *message) Duplicate() bool {
return m.duplicate
}
func (m *message) Qos() byte {
return m.qos
}
func (m *message) Retained() bool {
return m.retained
}
func (m *message) Topic() string {
return m.topic
}
func (m *message) MessageID() uint16 {
return m.messageID
}
func (m *message) Payload() []byte {
return m.payload
}
func messageFromPublish(p *packets.PublishPacket) Message {
return &message{
duplicate: p.Dup,
qos: p.Qos,
retained: p.Retain,
topic: p.TopicName,
messageID: p.MessageID,
payload: p.Payload,
}
}
func newConnectMsgFromOptions(options *ClientOptions) *packets.ConnectPacket {
m := packets.NewControlPacket(packets.Connect).(*packets.ConnectPacket)
m.CleanSession = options.CleanSession
m.WillFlag = options.WillEnabled
m.WillRetain = options.WillRetained
m.ClientIdentifier = options.ClientID
if options.WillEnabled {
m.WillQos = options.WillQos
m.WillTopic = options.WillTopic
m.WillMessage = options.WillPayload
}
username := options.Username
password := options.Password
if options.CredentialsProvider != nil {
username, password = options.CredentialsProvider()
}
if username != "" {
m.UsernameFlag = true
m.Username = username
//mustn't have password without user as well
if password != "" {
m.PasswordFlag = true
m.Password = []byte(password)
}
}
m.Keepalive = uint16(options.KeepAlive)
return m
}
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