first commit

server/internal/backup/command.go

@@ -0,0 +1,41 @@
+package backup
+
+import (
+	"context"
+	"io"
+	"os"
+	"os/exec"
+)
+
+type CommandOptions struct {
+	Stdin  io.Reader
+	Stdout io.Writer
+	Stderr io.Writer
+	Env    []string
+}
+
+type CommandExecutor interface {
+	LookPath(file string) (string, error)
+	Run(ctx context.Context, name string, args []string, options CommandOptions) error
+}
+
+type OSCommandExecutor struct{}
+
+func NewOSCommandExecutor() *OSCommandExecutor {
+	return &OSCommandExecutor{}
+}
+
+func (e *OSCommandExecutor) LookPath(file string) (string, error) {
+	return exec.LookPath(file)
+}
+
+func (e *OSCommandExecutor) Run(ctx context.Context, name string, args []string, options CommandOptions) error {
+	cmd := exec.CommandContext(ctx, name, args...)
+	cmd.Stdin = options.Stdin
+	cmd.Stdout = options.Stdout
+	cmd.Stderr = options.Stderr
+	if len(options.Env) > 0 {
+		cmd.Env = append(os.Environ(), options.Env...)
+	}
+	return cmd.Run()
+}