Create temporary workspace with local sub-command

presentation/cmd/local.go

@@ -2,12 +2,18 @@ package cmd
 
 import (
 	"context"
+	"fmt"
 	"github.com/duck8823/duci/domain/model/docker"
 	"github.com/duck8823/duci/domain/model/job"
 	"github.com/duck8823/duci/domain/model/runner"
 	"github.com/labstack/gommon/random"
+	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
 )
 
 var localCmd = createCmd("local", "Run locally", runLocal)
@@ -23,7 +29,72 @@ func runLocal(cmd *cobra.Command, args []string) {
 		}).
 		Build()
 
-	if err := runner.Run(context.Background(), ".", docker.Tag(random.String(12, random.Hex)), args); err != nil {
+	workspace := filepath.Join(os.TempDir(), random.String(16))
+	if err := copyDir(".", workspace); err != nil {
 		logrus.Fatalf("an error occurred: %+v", err)
 	}
+
+	if err := runner.Run(context.Background(), job.WorkDir(workspace), docker.Tag(random.String(12, random.Hex)), args); err != nil {
+		logrus.Fatalf("an error occurred: %+v", err)
+	}
+	defer os.RemoveAll(workspace)
+}
+
+func copyFile(src, dst string) error {
+	srcFile, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer srcFile.Close()
+
+	dstFile, err := os.Create(dst)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	defer dstFile.Close()
+
+	if _, err := io.Copy(dstFile, srcFile); err != nil {
+		return errors.WithStack(err)
+	}
+
+	srcInfo, err := os.Stat(src)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	if err := os.Chmod(dst, srcInfo.Mode()); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+func copyDir(src, dst string) error {
+	srcInfo, err := os.Stat(src)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	if err = os.MkdirAll(dst, srcInfo.Mode()); err != nil {
+		return errors.WithStack(err)
+	}
+
+	entries, err := ioutil.ReadDir(src)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	for _, entry := range entries {
+		srcFilePath := filepath.Join(src, entry.Name())
+		dstFilePath := filepath.Join(dst, entry.Name())
+
+		if entry.IsDir() {
+			if err = copyDir(srcFilePath, dstFilePath); err != nil {
+				fmt.Println(err)
+			}
+		} else {
+			if err = copyFile(srcFilePath, dstFilePath); err != nil {
+				fmt.Println(err)
+			}
+		}
+	}
+	return nil
 }