// NewDummyDevice creates dummy device which outputs specified string/binary payload.
func NewDummyDevice(section inidef.ConfigSection, brokers []*broker.Broker, devChan chan message.Message) (DummyDevice, error) {
ret := DummyDevice{
Name: section.Name,
DeviceChan: devChan,
}
values := section.Values
bname, ok := section.Values["broker"]
if !ok {
return ret, fmt.Errorf("broker does not set")
}
for _, b := range brokers {
if b.Name == bname {
ret.Broker = brokers
}
}
if ret.Broker == nil {
return ret, fmt.Errorf("broker does not exists: %s", bname)
}
ret.BrokerName = bname
qos, err := strconv.Atoi(values["qos"])
if err != nil {
return ret, fmt.Errorf("qos parse failed, %v", err)
}
ret.QoS = byte(qos)
interval, err := strconv.Atoi(values["interval"])
if err != nil {
return ret, err
} else {
ret.Interval = int(interval)
}
ret.Type = values["type"]
ret.Payload, err = utils.ParsePayload(values["payload"])
if err != nil {
log.Warnf("invalid payload, but continue")
}
ret.Retain = false
if values["retain"] == "true" {
ret.Retain = true
}
sub, ok := values["subscribe"]
if ok && sub == "true" {
ret.Subscribe = true
}
// Validation
if err := ret.Validate(); err != nil {
return ret, err
}
return ret, nil
}
// NewBrokers returns []*Broker from inidef.Config.
// If validation failes, retrun error.
func NewBrokers(conf inidef.Config, gwChan chan message.Message) (Brokers, error) {
var brokers Brokers
for _, section := range conf.Sections {
if section.Type != "broker" {
continue
}
values := section.Values
willMsg, err := utils.ParsePayload(values["will_message"])
if err != nil {
log.Warnf("will_message, %v", err)
}
broker := &Broker{
GatewayName: conf.GatewayName,
Name: section.Name,
Host: values["host"],
Username: values["username"],
Password: values["password"],
TopicPrefix: values["topic_prefix"],
WillMessage: willMsg,
Tls: false,
CaCert: "",
RetryInterval: int(0),
Subscribed: NewSubscribed(),
GwChan: gwChan,
}
priority := 1
if section.Arg != "" {
priority, err = strconv.Atoi(section.Arg)
if err != nil {
return nil, fmt.Errorf("broker priority parse failed, %v", section.Arg)
}
}
broker.Priority = int(priority)
port, err := strconv.Atoi(values["port"])
if err != nil {
return nil, fmt.Errorf("broker port parse failed, %v", values["port"])
}
broker.Port = int(port)
// OPTIONAL fields
if values["retry_interval"] != "" {
retry_interval, err := strconv.Atoi(values["retry_interval"])
if err != nil {
return nil, err
} else {
broker.RetryInterval = int(retry_interval)
}
}
if values["tls"] == "true" && values["cacert"] != "" {
// validate certificate
broker.Tls = true
broker.CaCert = values["cacert"]
broker.TLSConfig, err = NewTLSConfig(broker.CaCert)
if err != nil {
return nil, err
}
}
// Validation
if err := validator.Validate(broker); err != nil {
return brokers, err
}
brokers = append(brokers, broker)
}
// sort by Priority
sort.Sort(brokers)
return brokers, nil
}