feat: exec support remote config (#909)

inputs/exec/exec.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"os"
 	osExec "os/exec"
 	"path/filepath"
 	"runtime"
@@ -29,6 +30,8 @@ const MaxStderrBytes int = 512
 type Instance struct {
 	config.InstanceConfig
 
+	Scripts map[string]string `toml:"scripts"`
+
 	Commands   []string        `toml:"commands"`
 	Timeout    config.Duration `toml:"timeout"`
 	DataFormat string          `toml:"data_format"`
@@ -63,6 +66,20 @@ func (e *Exec) GetInstances() []inputs.Instance {
 }
 
 func (ins *Instance) Init() error {
+	if len(ins.Scripts) > 0 {
+		for script, content := range ins.Scripts {
+			dir := filepath.Dir(script)
+			file := filepath.Base(script)
+			err := os.MkdirAll(dir, 0755)
+			if err != nil {
+				return err
+			}
+			err = os.WriteFile(filepath.Join(dir, file), []byte(content), 0755)
+			if err != nil {
+				return fmt.Errorf("write script %s error: %s", script, err)
+			}
+		}
+	}
 	if len(ins.Commands) == 0 {
 		return types.ErrInstancesEmpty
 	}