[agent-go] update pipline command executor

agent-go/executor/CommandExecutor.go

@@ -6,6 +6,7 @@ import (
 	"bytes"
 	"fmt"
 	"os/exec"
+	"strings"
 )
 
 type ExecutionMessage struct {
@@ -54,42 +55,20 @@ func Execute(em *ExecutionMessage) ([]string, error) {
 
 func PipeLineCommandExecutor(pipeLineCommand [][]string) ([]string, error) {
 
-	var cmds []*exec.Cmd
-
-	// 创建每个命令对象，并将前一个命令的标准输出连接到当前命令的标准输入
-	for i, partOfCommand := range pipeLineCommand {
-		cmd := exec.Command(partOfCommand[0], partOfCommand[1:]...)
-		if i > 0 {
-			prevCmd := cmds[i-1]
-			out, err := prevCmd.StdoutPipe()
-			if err != nil {
-				log.ErrorF("Pipeline command error happened! Command is => %v, Error is %v", partOfCommand, err)
-				return nil, err
-			}
-			cmd.Stdin = out
+	var output []byte
+	var err error
+	for i, command := range pipeLineCommand {
+		cmd := exec.Command(command[0], command[1:]...)
+		cmd.Stdin = bytes.NewReader(output)
+		output, err = cmd.Output()
+		if err != nil {
+			return strings.Split(string(output), "\n"), err
+		}
+		if i == len(pipeLineCommand)-1 {
+			return strings.Split(string(output), "\n"), nil
 		}
-		cmds = append(cmds, cmd)
 	}
-
-	// 执行最后一个命令，并获取其输出
-	lastCmd := cmds[len(cmds)-1]
-
-	var out bytes.Buffer
-	lastCmd.Stdout = &out
-	lastCmd.Stderr = &out
-	err := lastCmd.Run()
-
-	scanner := bufio.NewScanner(&out)
-	var result []string
-	for scanner.Scan() {
-		result = append(result, scanner.Text())
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	return result, nil
+	return []string{}, nil
 }
 
 func MultiLineCommandExecutor(multiLineCommandExecutor [][]string) ([]string, error) {