add cli command server status

cli/cmd/cmd.go

@@ -60,6 +60,7 @@ func CmdInit() *baseCommand {
 	baseCmd.AddCommand(serverCommand)
 	serverCommand.AddCommand(&StartServerCommand{})
 	serverCommand.AddCommand(&StopServerCommand{})
+	serverCommand.AddCommand(&StatusServerCommand{})
 
 	return baseCmd
 }

cli/cmd/server_status.go

@@ -0,0 +1,58 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/chaosblade-io/chaosblade-spec-go/channel"
+	"github.com/chaosblade-io/chaosblade-spec-go/spec"
+	"github.com/spf13/cobra"
+)
+
+type StatusServerCommand struct {
+	baseCommand
+}
+
+func (ssc *StatusServerCommand) Init() {
+	ssc.command = &cobra.Command{
+		Use:     "status",
+		Short:   "Prints out the status of blade server",
+		Long:    "Prints out the status of blade server",
+		Aliases: []string{"s"},
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return ssc.run(cmd, args)
+		},
+		Example: statusServerExample(),
+	}
+}
+
+func (ssc *StatusServerCommand) run(cmd *cobra.Command, args []string) error {
+	// check if the process named `blade server --start` exists or not
+	pids, err := channel.GetPidsByProcessName(startServerKey, context.TODO())
+	if err != nil {
+		return spec.ReturnFail(spec.Code[spec.ServerError], err.Error())
+	}
+	if len(pids) != 0 {
+		data := map[string]string{
+			"status": "up",
+			"port":   "",
+		}
+		response := channel.NewLocalChannel().Run(context.TODO(), "ps", fmt.Sprintf("-p %s | grep port", strings.Join(pids, " ")))
+		fmtStrs := strings.Split(strings.Replace(fmt.Sprintf("%v", response.Result), "\n", "", -1), " ")
+		for i, p := range fmtStrs {
+			if p == "--port" {
+				data["port"] = fmtStrs[i+1]
+			}
+		}
+		response = spec.ReturnSuccess(data)
+		ssc.command.Println(response.Print())
+	} else {
+		return spec.ReturnFail(spec.Code[spec.ServerError], "down")
+	}
+	return nil
+}
+
+func statusServerExample() string {
+	return `blade server status`
+}