title: add multiport check and dns check feature

cluster/images/floater.Dockerfile

@@ -4,6 +4,6 @@ ARG BINARY
 
 RUN apk add --no-cache ca-certificates
 RUN apk update && apk upgrade
-RUN apk add ip6tables iptables curl
+RUN apk add --no-cache ip6tables iptables curl netcat-openbsd
 
 COPY ${BINARY} /bin/${BINARY}

pkg/command/check.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"fmt"
+	"strconv"
 
 	"sync"
 
@@ -67,6 +68,10 @@ func (o *CheckOptions) LoadConfig() {
 func (o *CheckOptions) Complete() error {
 	o.LoadConfig()
 
+	if o.DoOption == nil {
+		return fmt.Errorf("config.json load error")
+	}
+
 	srcfloater := &share.Floater{
 		Namespace:         o.DoOption.Namespace,
 		Name:              share.DefaultFloaterName,
@@ -108,6 +113,19 @@ func (o *CheckOptions) Validate() error {
 	if len(o.DoOption.Namespace) == 0 {
 		return fmt.Errorf("namespace must be specified")
 	}
+	if len(o.DoOption.CustomizedTargetPortList) != 0 {
+		for _, port := range o.DoOption.CustomizedTargetPortList {
+			portInt, err := strconv.Atoi(port)
+			if err != nil {
+				return fmt.Errorf("invalid port: %s", port)
+			} else if portInt <= 0 || portInt > 65535 {
+				return fmt.Errorf("invalid port: %d", portInt)
+			}
+		}
+		if len(o.DoOption.CustomizedTargetIPList) == 0 {
+			return fmt.Errorf("if CustomizedTargetPortList is not null, CustomizedTargetIPList should be assigned")
+		}
+	}
 
 	return nil
 }

pkg/command/init.go

@@ -47,14 +47,18 @@ func NewInitCmd() *cobra.Command {
 
 func (o *InitOptions) Run() error {
 	doOptions := share.DoOptions{
-		Namespace:   utils.DefaultNamespace,
-		Port:        "8889",
-		PodWaitTime: 30,
-		Protocol:    string(utils.TCP),
-		MaxNum:      3,
-		AutoClean:   false,
-		CmdTimeout:  10,
-		Version:     "0.2.1",
+		Namespace:                utils.DefaultNamespace,
+		Port:                     "8889",
+		CustomizedTargetPortList: []string{},
+		CustomizedTargetIPList:   []string{},
+		TargetDNSServer:          "",
+		TargetHostToLookup:       "",
+		PodWaitTime:              30,
+		Protocol:                 string(utils.TCP),
+		MaxNum:                   3,
+		AutoClean:                false,
+		CmdTimeout:               10,
+		Version:                  "0.2.1",
 		// src
 		SrcImageRepository: utils.DefaultImageRepository,
 		SrcKubeConfig:      utils.DefaultKubeConfigPath,

pkg/command/resume.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"fmt"
+	"strconv"
 
 	"github.com/kosmos.io/netdoctor/pkg/command/share"
 	"github.com/kosmos.io/netdoctor/pkg/utils"
@@ -60,6 +61,9 @@ func (o *ResumeOptions) LoadConfig() {
 
 func (o *ResumeOptions) Complete() error {
 	o.LoadConfig()
+	if o.DoOption == nil {
+		return fmt.Errorf("config.json load error")
+	}
 
 	srcfloater := &share.Floater{
 		Namespace:         o.DoOption.Namespace,
@@ -97,7 +101,10 @@ func (o *ResumeOptions) Complete() error {
 
 	var resumeData []*share.PrintCheckData
 
-	utils.ReadResume(&resumeData)
+	err := utils.ReadResume(&resumeData)
+	if err != nil {
+		klog.Error("read resumeData error")
+	}
 
 	o.DoOption.ResumeRecord = resumeData
 
@@ -109,6 +116,17 @@ func (o *ResumeOptions) Validate() error {
 		return fmt.Errorf("namespace must be specified")
 	}
 
+	if len(o.DoOption.CustomizedTargetPortList) != 0 {
+		for _, port := range o.DoOption.CustomizedTargetPortList {
+			portInt, err := strconv.Atoi(port)
+			if err != nil {
+				return fmt.Errorf("invalid port: %s", port)
+			} else if portInt <= 0 || portInt > 65535 {
+				return fmt.Errorf("invalid port: %d", portInt)
+			}
+		}
+	}
+
 	return nil
 }
 

pkg/command/share/do.go

@@ -6,16 +6,22 @@ import (
 
 	command "github.com/kosmos.io/netdoctor/pkg/command/share/remote-command"
 	"github.com/kosmos.io/netdoctor/pkg/utils"
+
+	progressbar "github.com/schollz/progressbar/v3"
 	"k8s.io/klog/v2"
 )
 
 type DoOptions struct {
 	Namespace string `json:"namespace,omitempty"`
 	Version   string `json:"version,omitempty"`
 
-	Protocol    string `json:"protocol,omitempty"`
-	PodWaitTime int    `json:"podWaitTime,omitempty"`
-	Port        string `json:"port,omitempty"`
+	Protocol                 string   `json:"protocol,omitempty"`
+	PodWaitTime              int      `json:"podWaitTime,omitempty"`
+	Port                     string   `json:"port,omitempty"`
+	CustomizedTargetPortList []string `json:"customizedTargetPortList,omitempty"`
+	CustomizedTargetIPList   []string `json:"customizedTargetIPList,omitempty"`
+	TargetDNSServer          string   `json:"targetDNSServer,omitempty"`
+	TargetHostToLookup       string   `json:"targetHostToLookup,omitempty"`
 
 	MaxNum     int  `json:"maxNum,omitempty"`
 	CmdTimeout int  `json:"cmdTimeout,omitempty"`
@@ -94,6 +100,20 @@ func (o *DoOptions) SaveOpts() {
 	}
 }
 
+func (o *DoOptions) SkipPod(podInfo *FloatInfo) bool {
+	// is check:  no skip
+	if len(o.ResumeRecord) == 0 {
+		return false
+	}
+	// is resume: filt
+	for _, r := range o.ResumeRecord {
+		if r.SrcNodeName == podInfo.NodeName {
+			return false
+		}
+	}
+	return true
+}
+
 func (o *DoOptions) Skip(podInfo *FloatInfo, targetIP string) bool {
 	// is check:  no skip
 	if len(o.ResumeRecord) == 0 {
@@ -112,34 +132,66 @@ func (o *DoOptions) RunRange(iPodInfos []*FloatInfo, jPodInfos []*FloatInfo) []*
 	var resultData []*PrintCheckData
 	mutex := sync.Mutex{}
 
-	barctl := utils.NewBar(len(jPodInfos) * len(iPodInfos))
+	var barctl *progressbar.ProgressBar
+
+	if len(o.CustomizedTargetIPList) != 0 && len(o.CustomizedTargetPortList) != 0 ||
+		o.Protocol == string(utils.DNS) {
+		barctl = utils.NewBar(len(iPodInfos))
+	} else {
+		barctl = utils.NewBar(len(jPodInfos) * len(iPodInfos))
+	}
 
 	worker := func(iPodInfo *FloatInfo) {
-		for _, jPodInfo := range jPodInfos {
-			for _, ip := range jPodInfo.PodIPs {
-				var targetIP string
-				var err error
-				var cmdResult *command.Result
-				targetIP = ip
-				if err != nil {
-					cmdResult = command.ParseError(err)
-				} else {
-					// isSkip
-					if o.Skip(iPodInfo, targetIP) {
-						continue
+		var cmdObj command.Command
+		if len(o.CustomizedTargetIPList) != 0 && len(o.CustomizedTargetPortList) != 0 {
+			cmdObj = command.NewCmd(o.Protocol, o.CustomizedTargetIPList, o.CustomizedTargetPortList)
+		} else if o.Protocol == string(utils.DNS) {
+			cmdObj = command.NewCmd(o.Protocol, o.TargetHostToLookup, o.TargetDNSServer)
+		} else {
+			for _, jPodInfo := range jPodInfos {
+				for _, ip := range jPodInfo.PodIPs {
+					var targetIP string
+					var err error
+					var cmdResult *command.Result
+					targetIP = ip
+					if err != nil {
+						cmdResult = command.ParseError(err)
+					} else {
+						// isSkip
+						if o.Skip(iPodInfo, targetIP) {
+							continue
+						}
+						// ToDo RunRange && RunNative func support multiple commands, and the code needs to be optimized
+						cmdObj := command.NewCmd(o.Protocol, targetIP, o.Port)
+						cmdResult = o.SrcFloater.CommandExec(iPodInfo, cmdObj)
 					}
-					// ToDo RunRange && RunNative func support multiple commands, and the code needs to be optimized
-					cmdObj := command.NewCmd(o.Protocol, targetIP, o.Port)
-					cmdResult = o.SrcFloater.CommandExec(iPodInfo, cmdObj)
+					mutex.Lock()
+					resultData = append(resultData, &PrintCheckData{
+						*cmdResult,
+						iPodInfo.NodeName, jPodInfo.NodeName, targetIP,
+					})
+					mutex.Unlock()
+				}
+				err := barctl.Add(1)
+				if err != nil {
+					klog.Error("processs bar event add error")
 				}
-				mutex.Lock()
-				resultData = append(resultData, &PrintCheckData{
-					*cmdResult,
-					iPodInfo.NodeName, jPodInfo.NodeName, targetIP,
-				})
-				mutex.Unlock()
 			}
-			barctl.Add(1)
+			return
+		}
+		if o.SkipPod(iPodInfo) {
+			return
+		}
+		cmdResult := o.SrcFloater.CommandExec(iPodInfo, cmdObj)
+		mutex.Lock()
+		resultData = append(resultData, &PrintCheckData{
+			*cmdResult,
+			iPodInfo.NodeName, iPodInfo.NodeName, cmdObj.GetTargetStr(),
+		})
+		mutex.Unlock()
+		err := barctl.Add(1)
+		if err != nil {
+			klog.Error("processs bar event add error")
 		}
 	}
 

pkg/command/share/floater.go

@@ -303,7 +303,13 @@ func (f *Floater) CommandExec(fInfo *FloatInfo, cmd command.Command) *command.Re
 
 	if err != nil {
 		// klog.Infof("error: %s", err)
-		return command.ParseError(fmt.Errorf("%s, stderr: %s", err, errBuffer.String()))
+		errString := errBuffer.String()
+		if len(errString) != 0 {
+			return command.ParseError(fmt.Errorf("%s, stderr: %s", err, errString))
+		} else {
+			outString := outBuffer.String()
+			return command.ParseError(fmt.Errorf("%s, stderr: %s", err, outString))
+		}
 	}
 
 	return cmd.ParseResult(outBuffer.String())

pkg/command/share/printer.go

@@ -8,6 +8,7 @@ import (
 	command "github.com/kosmos.io/netdoctor/pkg/command/share/remote-command"
 	"github.com/kosmos.io/netdoctor/pkg/utils"
 	"github.com/olekukonko/tablewriter"
+	"k8s.io/klog/v2"
 )
 
 type PrintCheckData struct {
@@ -19,13 +20,13 @@ type PrintCheckData struct {
 
 func PrintResult(resultData []*PrintCheckData) {
 	table := tablewriter.NewWriter(os.Stdout)
-	table.SetHeader([]string{"S/N", "SRC_NODE_NAME", "DST_NODE_NAME", "TARGET_IP", "RESULT"})
+	table.SetHeader([]string{"S/N", "SRC_NODE_NAME", "DST_NODE_NAME", "TARGETP", "RESULT"})
 
 	tableException := tablewriter.NewWriter(os.Stdout)
-	tableException.SetHeader([]string{"S/N", "SRC_NODE_NAME", "DST_NODE_NAME", "TARGET_IP", "RESULT", "LOG"})
+	tableException.SetHeader([]string{"S/N", "SRC_NODE_NAME", "DST_NODE_NAME", "TARGET", "RESULT", "LOG"})
 
 	tableFailed := tablewriter.NewWriter(os.Stdout)
-	tableFailed.SetHeader([]string{"S/N", "SRC_NODE_NAME", "DST_NODE_NAME", "TARGET_IP", "RESULT", "LOG"})
+	tableFailed.SetHeader([]string{"S/N", "SRC_NODE_NAME", "DST_NODE_NAME", "TARGET", "RESULT", "LOG"})
 
 	resumeData := []*PrintCheckData{}
 
@@ -61,10 +62,20 @@ func PrintResult(resultData []*PrintCheckData) {
 			})
 		}
 	}
-	fmt.Println("")
-	table.Render()
-	fmt.Println("")
-	tableException.Render()
-
-	utils.WriteResume(resumeData)
+	if table.NumLines() > 0 {
+		fmt.Println("")
+		table.Render()
+	}
+	if tableFailed.NumLines() > 0 {
+		fmt.Println("")
+		tableFailed.Render()
+	}
+	if tableException.NumLines() > 0 {
+		fmt.Println("")
+		tableException.Render()
+	}
+	err := utils.WriteResume(resumeData)
+	if err != nil {
+		klog.Error("write resumeData error")
+	}
 }

pkg/command/share/remote-command/curl.go

@@ -11,6 +11,10 @@ type Curl struct {
 	Port     string
 }
 
+func (c *Curl) GetTargetStr() string {
+	return fmt.Sprintf("%s:%s", c.TargetIP, c.Port)
+}
+
 func (c *Curl) GetCommandStr() string {
 	// execute once
 	if utils.IsIPv6(c.TargetIP) {

pkg/command/share/remote-command/interface.go

@@ -20,6 +20,7 @@ type Result struct {
 type Command interface {
 	GetCommandStr() string
 	ParseResult(string) *Result
+	GetTargetStr() string
 }
 
 func ParseError(err error) *Result {
@@ -42,15 +43,29 @@ func PrintStatus(status int) string {
 	return "UNEXCEPTIONED"
 }
 
-func NewCmd(protocol string, args ...string) Command {
-	if protocol == string(utils.TCP) {
-		return &Curl{
-			TargetIP: args[0],
-			Port:     args[1],
+func NewCmd(protocol string, args ...any) Command {
+	switch args[1].(type) {
+	case []string:
+		return &Ncat{
+			Protocol: protocol,
+			TargetIP: args[0].([]string),
+			Port:     args[1].([]string),
 		}
-	} else {
-		return &Ping{
-			TargetIP: args[0],
+	default:
+		if protocol == string(utils.TCP) {
+			return &Curl{
+				TargetIP: args[0].(string),
+				Port:     args[1].(string),
+			}
+		} else if protocol == string(utils.DNS) {
+			return &Nslookup{
+				TargetHost: args[0].(string),
+				DNSServer:  args[1].(string),
+			}
+		} else {
+			return &Ping{
+				TargetIP: args[0].(string),
+			}
 		}
 	}
 }