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sub.go
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sub.go
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/*
* Copyright GoIIoT (https://github.com/goiiot)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"strconv"
"strings"
mq "github.com/goiiot/libmqtt"
)
func execSub(args []string) bool {
if client == nil {
println("please connect to server first")
return true
}
topics := make([]*mq.Topic, 0)
for _, v := range args {
topicStr := strings.Split(v, ",")
if len(topicStr) != 2 {
subUsage()
return true
}
qos, err := strconv.Atoi(topicStr[1])
if err != nil {
subUsage()
return true
}
topics = append(topics, &mq.Topic{Name: topicStr[0], Qos: mq.QosLevel(qos)})
}
for _, t := range topics {
client.Handle(t.Name, topicHandler)
}
client.Subscribe(topics...)
return true
}
func execUnSub(args []string) bool {
if client == nil {
println("please connect to server first")
return true
}
client.UnSubscribe(args...)
return true
}
func subUsage() {
println(`s, sub [topic,qos] [...] - subscribe topic(s)`)
}
func unSubUsage() {
println(`u, unsub [topic] [...] - unsubscribe topic(s)`)
}