demo_test/test.go - device-management - Gitiles

 // Copyright 2018 Open Networking Foundation
 //
 // 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 (
 	"bufio"
 	"bytes"
 	"crypto/tls"
 	"fmt"
 	"github.com/Shopify/sarama"
 	"github.com/opencord/device-management/demo_test/proto"
 	logrus "github.com/sirupsen/logrus"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/status"
 	"net"
 	"net/http"
 	"os"
 	"os/exec"
 	"os/signal"
 	"sort"
 	"strconv"
 	"strings"
 )

 var EVENTS_MAP = map[string]string{
 	"add":    "ResourceAdded",
 	"rm":     "ResourceRemoved",
 	"alert":  "Alert",
 	"update": "Update"}

 var default_address string = "localhost:31085"
 var importerTopic = "importer"
 var DataConsumer sarama.Consumer

 var cc importer.DeviceManagementClient
 var ctx context.Context
 var conn *grpc.ClientConn

 func GetCurrentDevices() (error, []string) {
 	logrus.Info("Testing GetCurrentDevices")
 	empty := new(importer.Empty)
 	var ret_msg *importer.DeviceListByIp
 	ret_msg, err := cc.GetCurrentDevices(ctx, empty)
 	if err != nil {
 		return err, nil
 	} else {
 		return err, ret_msg.Ip
 	}
 }

 func init() {
 	Formatter := new(logrus.TextFormatter)
 	Formatter.TimestampFormat = "02-01-2006 15:04:05"
 	Formatter.FullTimestamp = true
 	logrus.SetFormatter(Formatter)
 }

 func topicListener(topic *string, master sarama.Consumer) {
 	logrus.Info("Starting topicListener for ", *topic)
 	consumer, err := master.ConsumePartition(*topic, 0, sarama.OffsetOldest)
 	if err != nil {
 		logrus.Errorf("topicListener panic, topic=[%s]: %s", *topic, err.Error())
 		os.Exit(1)
 	}
 	signals := make(chan os.Signal, 1)
 	signal.Notify(signals, os.Interrupt)
 	doneCh := make(chan struct{})
 	go func() {
 		for {
 			select {
 			case err := <-consumer.Errors():
 				logrus.Errorf("Consumer error: %s", err.Err)
 			case msg := <-consumer.Messages():
 				logrus.Infof("Got message on topic=[%s]: %s", *topic, string(msg.Value))
 			case <-signals:
 				logrus.Warn("Interrupt is detected")
 				os.Exit(1)
 			}
 		}
 	}()
 	<-doneCh
 }

 func kafkainit() {
 	cmd := exec.Command("/bin/sh", "kafka_ip.sh")
 	var kafkaIP string
 	var out bytes.Buffer
 	cmd.Stdout = &out
 	err := cmd.Run()
 	if err != nil {
 		logrus.Info(err)
 		os.Exit(1)
 	}

 	kafkaIP = out.String()
 	kafkaIP = strings.TrimSuffix(kafkaIP, "\n")
 	kafkaIP = kafkaIP + ":9092"
 	logrus.Infof("IP address of kafka-cord-0:%s", kafkaIP)
 	config := sarama.NewConfig()
 	config.Consumer.Return.Errors = true
 	master, err := sarama.NewConsumer([]string{kafkaIP}, config)
 	if err != nil {
 		panic(err)
 	}
 	DataConsumer = master

 	go topicListener(&importerTopic, master)
 }
 func main() {
 	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 	logrus.Info("Launching server...")
 	logrus.Info("kafkaInit starting")
 	kafkainit()

 	ln, err := net.Listen("tcp", ":9999")
 	if err != nil {
 		fmt.Println("could not listen")
 		logrus.Fatalf("did not listen: %v", err)
 	}
 	defer ln.Close()

 	conn, err = grpc.Dial(default_address, grpc.WithInsecure())
 	if err != nil {
 		logrus.Fatalf("did not connect: %v", err)
 	}
 	defer conn.Close()

 	cc = importer.NewDeviceManagementClient(conn)
 	ctx = context.Background()

 	loop := true

 	for loop {
 		connS, err := ln.Accept()
 		if err != nil {
 			logrus.Fatalf("Accept error: %v", err)
 		}
 		cmdstr, _ := bufio.NewReader(connS).ReadString('\n')
 		cmdstr = strings.TrimSuffix(cmdstr, "\n")
 		s := strings.Split(cmdstr, " ")
 		newmessage := ""
 		cmd := string(s[0])

 		switch cmd {

 		case "attach":
 			if len(s) < 2 {
 				newmessage = newmessage + "invalid command length" + cmdstr + "\n"
 				break
 			}
 			var devicelist importer.DeviceList
 			var ipattached []string
 			for _, devinfo := range s[1:] {
 				info := strings.Split(devinfo, ":")
 				if len(info) != 3 {
 					newmessage = newmessage + "invalid command " + devinfo + "\n"
 					continue
 				}
 				deviceinfo := new(importer.DeviceInfo)
 				deviceinfo.IpAddress = info[0] + ":" + info[1]
 				freq, err := strconv.ParseUint(info[2], 10, 32)
 				if err != nil {
 					newmessage = newmessage + "invalid command " + devinfo + "\n"
 					continue
 				}
 				deviceinfo.Frequency = uint32(freq)
 				devicelist.Device = append(devicelist.Device, deviceinfo)
 				ipattached = append(ipattached, deviceinfo.IpAddress)
 			}
 			if len(devicelist.Device) == 0 {
 				break
 			}
 			_, err := cc.SendDeviceList(ctx, &devicelist)
 			if err != nil {
 				errStatus, _ := status.FromError(err)
 				newmessage = newmessage + errStatus.Message()
 				logrus.Errorf("attach error - status code %v message %v", errStatus.Code(), errStatus.Message())
 			} else {
 				sort.Strings(ipattached)
 				ips := strings.Join(ipattached, " ")
 				newmessage = newmessage + ips + " attached\n"
 			}
 		case "delete":
 			if len(s) < 2 {
 				newmessage = newmessage + "invalid command " + cmdstr + "\n"
 				break
 			}
 			var devicelist importer.DeviceListByIp
 			for _, ip := range s[1:] {
 				addr := strings.Split(ip, ":")
 				if len(addr) != 2 {
 					newmessage = newmessage + "invalid address " + ip + "\n"
 					continue
 				}
 				devicelist.Ip = append(devicelist.Ip, ip)
 			}
 			if len(devicelist.Ip) == 0 {
 				break
 			}
 			_, err := cc.DeleteDeviceList(ctx, &devicelist)
 			if err != nil {
 				errStatus, _ := status.FromError(err)
 				newmessage = newmessage + errStatus.Message()
 				logrus.Errorf("delete error - status code %v message %v", errStatus.Code(), errStatus.Message())
 			} else {
 				sort.Strings(devicelist.Ip)
 				ips := strings.Join(devicelist.Ip, " ")
 				newmessage = newmessage + ips + " deleted\n"
 			}
 		case "period":
 			if len(s) != 2 {
 				newmessage = newmessage + "invalid command " + cmdstr + "\n"
 				break
 			}
 			args := strings.Split(s[1], ":")
 			if len(args) != 3 {
 				newmessage = newmessage + "invalid command " + s[1] + "\n"
 				break
 			}
 			ip := args[0] + ":" + args[1]
 			pv := args[2]
 			u, err := strconv.ParseUint(pv, 10, 64)
 			if err != nil {
 				logrus.Error("ParseUint error!!\n")
 			} else {
 				freqinfo := new(importer.FreqInfo)
 				freqinfo.Frequency = uint32(u)
 				freqinfo.IpAddress = ip
 				_, err := cc.SetFrequency(ctx, freqinfo)

 				if err != nil {
 					errStatus, _ := status.FromError(err)
 					newmessage = newmessage + errStatus.Message()
 					logrus.Errorf("period error - status code %v message %v", errStatus.Code(), errStatus.Message())
 				} else {
 					newmessage = newmessage + "data collection interval configured to " + pv + " seconds\n"
 				}
 			}
 		case "sub", "unsub":
 			if len(s) != 2 {
 				newmessage = newmessage + "invalid command " + cmdstr + "\n"
 				break
 			}
 			args := strings.Split(s[1], ":")
 			if len(args) < 3 {
 				newmessage = newmessage + "invalid command " + s[1] + "\n"
 				break
 			}
 			giveneventlist := new(importer.GivenEventList)
 			giveneventlist.EventIpAddress = args[0] + ":" + args[1]
 			for _, event := range args[2:] {
 				if value, ok := EVENTS_MAP[event]; ok {
 					giveneventlist.Events = append(giveneventlist.Events, value)
 				}
 			}
 			if len(giveneventlist.Events) == 0 {
 				newmessage = newmessage + "No valid event was given\n"
 			}
 			var err error
 			if cmd == "sub" {
 				_, err = cc.SubscribeGivenEvents(ctx, giveneventlist)
 			} else {
 				_, err = cc.UnsubscribeGivenEvents(ctx, giveneventlist)
 			}
 			if err != nil {
 				errStatus, _ := status.FromError(err)
 				newmessage = newmessage + errStatus.Message()
 				logrus.Errorf("Un/subscribe error - status code %v message %v", errStatus.Code(), errStatus.Message())
 			} else {
 				newmessage = newmessage + cmd + " successful\n"
 			}
 		case "showeventlist":
 			if len(s) != 2 {
 				newmessage = newmessage + "invalid command " + cmdstr + "\n"
 				break
 			}
 			currentdeviceinfo := new(importer.Device)
 			currentdeviceinfo.IpAddress = s[1]
 			ret_msg, err := cc.GetEventList(ctx, currentdeviceinfo)
 			if err != nil {
 				errStatus, _ := status.FromError(err)
 				newmessage = errStatus.Message()
 				logrus.Errorf("showeventlist error - status code %v message %v", errStatus.Code(), errStatus.Message())
 			} else {
 				fmt.Print("showeventlist ", ret_msg.Events)
 				sort.Strings(ret_msg.Events[:])
 				newmessage = strings.Join(ret_msg.Events[:], " ")
 				newmessage = newmessage + "\n"
 			}
 		case "showdeviceeventlist":
 			if len(s) != 2 {
 				newmessage = newmessage + "invalid command " + s[1] + "\n"
 				break
 			}
 			currentdeviceinfo := new(importer.Device)
 			currentdeviceinfo.IpAddress = s[1]
 			ret_msg, err := cc.GetCurrentEventList(ctx, currentdeviceinfo)
 			if err != nil {
 				errStatus, _ := status.FromError(err)
 				logrus.Errorf("showdeviceeventlist error - status code %v message %v", errStatus.Code(), errStatus.Message())
 				newmessage = newmessage + errStatus.Message()
 			} else {
 				fmt.Print("showdeviceeventlist ", ret_msg.Events)
 				sort.Strings(ret_msg.Events[:])
 				newmessage = strings.Join(ret_msg.Events[:], " ")
 				newmessage = newmessage + "\n"
 			}
 		case "cleardeviceeventlist":
 			if len(s) != 2 {
 				newmessage = newmessage + "invalid command " + s[1] + "\n"
 				break
 			}
 			currentdeviceinfo := new(importer.Device)
 			currentdeviceinfo.IpAddress = s[1]
 			_, err := cc.ClearCurrentEventList(ctx, currentdeviceinfo)
 			if err != nil {
 				errStatus, _ := status.FromError(err)
 				newmessage = newmessage + errStatus.Message()
 				logrus.Errorf("cleardeviceeventlist error - status code %v message %v", errStatus.Code(), errStatus.Message())
 			} else {
 				newmessage = newmessage + currentdeviceinfo.IpAddress + " events cleared\n"
 			}
 		case "QUIT":
 			loop = false
 			newmessage = "QUIT"

 		case "showdevices":
 			cmd_size := len(s)
 			logrus.Infof("cmd is : %s cmd_size: %d", cmd, cmd_size)
 			if cmd_size > 2 || cmd_size < 0 {
 				logrus.Error("error event showdevices !!")
 				newmessage = "error event !!"
 			} else {
 				err, currentlist := GetCurrentDevices()

 				if err != nil {
 					errStatus, _ := status.FromError(err)
 					logrus.Errorf("GetCurrentDevice error: %s Status code: %d", errStatus.Message(), errStatus.Code())
 					newmessage = errStatus.Message()
 					fmt.Print("showdevices error!!")
 				} else {
 					fmt.Print("showdevices ", currentlist)
 					sort.Strings(currentlist[:])
 					newmessage = strings.Join(currentlist[:], " ")
 					newmessage = newmessage + "\n"
 				}
 			}
 		default:
 			newmessage = newmessage + "invalid command " + cmdstr + "\n"
 		}
 		// send string back to client
 		n, err := connS.Write([]byte(newmessage + ";"))
 		if err != nil {
 			logrus.Errorf("err writing to client:%s, n:%d", err, n)
 			return
 		}
 	}
 }
	// Copyright 2018 Open Networking Foundation
	//
	// 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 (
	"bufio"
	"bytes"
	"crypto/tls"
	"fmt"
	"github.com/Shopify/sarama"
	"github.com/opencord/device-management/demo_test/proto"
	logrus "github.com/sirupsen/logrus"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/status"
	"net"
	"net/http"
	"os"
	"os/exec"
	"os/signal"
	"sort"
	"strconv"
	"strings"
	)

	var EVENTS_MAP = map[string]string{
	"add": "ResourceAdded",
	"rm": "ResourceRemoved",
	"alert": "Alert",
	"update": "Update"}

	var default_address string = "localhost:31085"
	var importerTopic = "importer"
	var DataConsumer sarama.Consumer

	var cc importer.DeviceManagementClient
	var ctx context.Context
	var conn *grpc.ClientConn

	func GetCurrentDevices() (error, []string) {
	logrus.Info("Testing GetCurrentDevices")
	empty := new(importer.Empty)
	var ret_msg *importer.DeviceListByIp
	ret_msg, err := cc.GetCurrentDevices(ctx, empty)
	if err != nil {
	return err, nil
	} else {
	return err, ret_msg.Ip
	}
	}

	func init() {
	Formatter := new(logrus.TextFormatter)
	Formatter.TimestampFormat = "02-01-2006 15:04:05"
	Formatter.FullTimestamp = true
	logrus.SetFormatter(Formatter)
	}

	func topicListener(topic *string, master sarama.Consumer) {
	logrus.Info("Starting topicListener for ", *topic)
	consumer, err := master.ConsumePartition(*topic, 0, sarama.OffsetOldest)
	if err != nil {
	logrus.Errorf("topicListener panic, topic=[%s]: %s", *topic, err.Error())
	os.Exit(1)
	}
	signals := make(chan os.Signal, 1)
	signal.Notify(signals, os.Interrupt)
	doneCh := make(chan struct{})
	go func() {
	for {
	select {
	case err := <-consumer.Errors():
	logrus.Errorf("Consumer error: %s", err.Err)
	case msg := <-consumer.Messages():
	logrus.Infof("Got message on topic=[%s]: %s", *topic, string(msg.Value))
	case <-signals:
	logrus.Warn("Interrupt is detected")
	os.Exit(1)
	}
	}
	}()
	<-doneCh
	}

	func kafkainit() {
	cmd := exec.Command("/bin/sh", "kafka_ip.sh")
	var kafkaIP string
	var out bytes.Buffer
	cmd.Stdout = &out
	err := cmd.Run()
	if err != nil {
	logrus.Info(err)
	os.Exit(1)
	}

	kafkaIP = out.String()
	kafkaIP = strings.TrimSuffix(kafkaIP, "\n")
	kafkaIP = kafkaIP + ":9092"
	logrus.Infof("IP address of kafka-cord-0:%s", kafkaIP)
	config := sarama.NewConfig()
	config.Consumer.Return.Errors = true
	master, err := sarama.NewConsumer([]string{kafkaIP}, config)
	if err != nil {
	panic(err)
	}
	DataConsumer = master

	go topicListener(&importerTopic, master)
	}
	func main() {
	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
	logrus.Info("Launching server...")
	logrus.Info("kafkaInit starting")
	kafkainit()

	ln, err := net.Listen("tcp", ":9999")
	if err != nil {
	fmt.Println("could not listen")
	logrus.Fatalf("did not listen: %v", err)
	}
	defer ln.Close()

	conn, err = grpc.Dial(default_address, grpc.WithInsecure())
	if err != nil {
	logrus.Fatalf("did not connect: %v", err)
	}
	defer conn.Close()

	cc = importer.NewDeviceManagementClient(conn)
	ctx = context.Background()

	loop := true

	for loop {
	connS, err := ln.Accept()
	if err != nil {
	logrus.Fatalf("Accept error: %v", err)
	}
	cmdstr, _ := bufio.NewReader(connS).ReadString('\n')
	cmdstr = strings.TrimSuffix(cmdstr, "\n")
	s := strings.Split(cmdstr, " ")
	newmessage := ""
	cmd := string(s[0])

	switch cmd {

	case "attach":
	if len(s) < 2 {
	newmessage = newmessage + "invalid command length" + cmdstr + "\n"
	break
	}
	var devicelist importer.DeviceList
	var ipattached []string
	for _, devinfo := range s[1:] {
	info := strings.Split(devinfo, ":")
	if len(info) != 3 {
	newmessage = newmessage + "invalid command " + devinfo + "\n"
	continue
	}
	deviceinfo := new(importer.DeviceInfo)
	deviceinfo.IpAddress = info[0] + ":" + info[1]
	freq, err := strconv.ParseUint(info[2], 10, 32)
	if err != nil {
	newmessage = newmessage + "invalid command " + devinfo + "\n"
	continue
	}
	deviceinfo.Frequency = uint32(freq)
	devicelist.Device = append(devicelist.Device, deviceinfo)
	ipattached = append(ipattached, deviceinfo.IpAddress)
	}
	if len(devicelist.Device) == 0 {
	break
	}
	_, err := cc.SendDeviceList(ctx, &devicelist)
	if err != nil {
	errStatus, _ := status.FromError(err)
	newmessage = newmessage + errStatus.Message()
	logrus.Errorf("attach error - status code %v message %v", errStatus.Code(), errStatus.Message())
	} else {
	sort.Strings(ipattached)
	ips := strings.Join(ipattached, " ")
	newmessage = newmessage + ips + " attached\n"
	}
	case "delete":
	if len(s) < 2 {
	newmessage = newmessage + "invalid command " + cmdstr + "\n"
	break
	}
	var devicelist importer.DeviceListByIp
	for _, ip := range s[1:] {
	addr := strings.Split(ip, ":")
	if len(addr) != 2 {
	newmessage = newmessage + "invalid address " + ip + "\n"
	continue
	}
	devicelist.Ip = append(devicelist.Ip, ip)
	}
	if len(devicelist.Ip) == 0 {
	break
	}
	_, err := cc.DeleteDeviceList(ctx, &devicelist)
	if err != nil {
	errStatus, _ := status.FromError(err)
	newmessage = newmessage + errStatus.Message()
	logrus.Errorf("delete error - status code %v message %v", errStatus.Code(), errStatus.Message())
	} else {
	sort.Strings(devicelist.Ip)
	ips := strings.Join(devicelist.Ip, " ")
	newmessage = newmessage + ips + " deleted\n"
	}
	case "period":
	if len(s) != 2 {
	newmessage = newmessage + "invalid command " + cmdstr + "\n"
	break
	}
	args := strings.Split(s[1], ":")
	if len(args) != 3 {
	newmessage = newmessage + "invalid command " + s[1] + "\n"
	break
	}
	ip := args[0] + ":" + args[1]
	pv := args[2]
	u, err := strconv.ParseUint(pv, 10, 64)
	if err != nil {
	logrus.Error("ParseUint error!!\n")
	} else {
	freqinfo := new(importer.FreqInfo)
	freqinfo.Frequency = uint32(u)
	freqinfo.IpAddress = ip
	_, err := cc.SetFrequency(ctx, freqinfo)

	if err != nil {
	errStatus, _ := status.FromError(err)
	newmessage = newmessage + errStatus.Message()
	logrus.Errorf("period error - status code %v message %v", errStatus.Code(), errStatus.Message())
	} else {
	newmessage = newmessage + "data collection interval configured to " + pv + " seconds\n"
	}
	}
	case "sub", "unsub":
	if len(s) != 2 {
	newmessage = newmessage + "invalid command " + cmdstr + "\n"
	break
	}
	args := strings.Split(s[1], ":")
	if len(args) < 3 {
	newmessage = newmessage + "invalid command " + s[1] + "\n"
	break
	}
	giveneventlist := new(importer.GivenEventList)
	giveneventlist.EventIpAddress = args[0] + ":" + args[1]
	for _, event := range args[2:] {
	if value, ok := EVENTS_MAP[event]; ok {
	giveneventlist.Events = append(giveneventlist.Events, value)
	}
	}
	if len(giveneventlist.Events) == 0 {
	newmessage = newmessage + "No valid event was given\n"
	}
	var err error
	if cmd == "sub" {
	_, err = cc.SubscribeGivenEvents(ctx, giveneventlist)
	} else {
	_, err = cc.UnsubscribeGivenEvents(ctx, giveneventlist)
	}
	if err != nil {
	errStatus, _ := status.FromError(err)
	newmessage = newmessage + errStatus.Message()
	logrus.Errorf("Un/subscribe error - status code %v message %v", errStatus.Code(), errStatus.Message())
	} else {
	newmessage = newmessage + cmd + " successful\n"
	}
	case "showeventlist":
	if len(s) != 2 {
	newmessage = newmessage + "invalid command " + cmdstr + "\n"
	break
	}
	currentdeviceinfo := new(importer.Device)
	currentdeviceinfo.IpAddress = s[1]
	ret_msg, err := cc.GetEventList(ctx, currentdeviceinfo)
	if err != nil {
	errStatus, _ := status.FromError(err)
	newmessage = errStatus.Message()
	logrus.Errorf("showeventlist error - status code %v message %v", errStatus.Code(), errStatus.Message())
	} else {
	fmt.Print("showeventlist ", ret_msg.Events)
	sort.Strings(ret_msg.Events[:])
	newmessage = strings.Join(ret_msg.Events[:], " ")
	newmessage = newmessage + "\n"
	}
	case "showdeviceeventlist":
	if len(s) != 2 {
	newmessage = newmessage + "invalid command " + s[1] + "\n"
	break
	}
	currentdeviceinfo := new(importer.Device)
	currentdeviceinfo.IpAddress = s[1]
	ret_msg, err := cc.GetCurrentEventList(ctx, currentdeviceinfo)
	if err != nil {
	errStatus, _ := status.FromError(err)
	logrus.Errorf("showdeviceeventlist error - status code %v message %v", errStatus.Code(), errStatus.Message())
	newmessage = newmessage + errStatus.Message()
	} else {
	fmt.Print("showdeviceeventlist ", ret_msg.Events)
	sort.Strings(ret_msg.Events[:])
	newmessage = strings.Join(ret_msg.Events[:], " ")
	newmessage = newmessage + "\n"
	}
	case "cleardeviceeventlist":
	if len(s) != 2 {
	newmessage = newmessage + "invalid command " + s[1] + "\n"
	break
	}
	currentdeviceinfo := new(importer.Device)
	currentdeviceinfo.IpAddress = s[1]
	_, err := cc.ClearCurrentEventList(ctx, currentdeviceinfo)
	if err != nil {
	errStatus, _ := status.FromError(err)
	newmessage = newmessage + errStatus.Message()
	logrus.Errorf("cleardeviceeventlist error - status code %v message %v", errStatus.Code(), errStatus.Message())
	} else {
	newmessage = newmessage + currentdeviceinfo.IpAddress + " events cleared\n"
	}
	case "QUIT":
	loop = false
	newmessage = "QUIT"

	case "showdevices":
	cmd_size := len(s)
	logrus.Infof("cmd is : %s cmd_size: %d", cmd, cmd_size)
	if cmd_size > 2 \|\| cmd_size < 0 {
	logrus.Error("error event showdevices !!")
	newmessage = "error event !!"
	} else {
	err, currentlist := GetCurrentDevices()

	if err != nil {
	errStatus, _ := status.FromError(err)
	logrus.Errorf("GetCurrentDevice error: %s Status code: %d", errStatus.Message(), errStatus.Code())
	newmessage = errStatus.Message()
	fmt.Print("showdevices error!!")
	} else {
	fmt.Print("showdevices ", currentlist)
	sort.Strings(currentlist[:])
	newmessage = strings.Join(currentlist[:], " ")
	newmessage = newmessage + "\n"
	}
	}
	default:
	newmessage = newmessage + "invalid command " + cmdstr + "\n"
	}
	// send string back to client
	n, err := connS.Write([]byte(newmessage + ";"))
	if err != nil {
	logrus.Errorf("err writing to client:%s, n:%d", err, n)
	return
	}
	}
	}