Merge "Soong: use deterministic temp dir names in sbox"

import (

	"bytes"

	"crypto/sha1"

	"encoding/hex"

	"errors"

	"flag"

	"fmt"

		return fmt.Errorf("failed to create %q: %w", sandboxesRoot, err)

	}

	tempDir, err := ioutil.TempDir(sandboxesRoot, "sbox")

	// This tool assumes that there are no two concurrent runs with the same

	// manifestFile. It should therefore be safe to use the hash of the

	// manifestFile as the temporary directory name. We do this because it

	// makes the temporary directory name deterministic. There are some

	// tools that embed the name of the temporary output in the output, and

	// they otherwise cause non-determinism, which then poisons actions

	// depending on this one.

	hash := sha1.New()

	hash.Write([]byte(manifestFile))

	tempDir := filepath.Join(sandboxesRoot, "sbox", hex.EncodeToString(hash.Sum(nil)))

	err = os.RemoveAll(tempDir)

	if err != nil {

		return err

	}

	err = os.MkdirAll(tempDir, 0777)

	if err != nil {

		return fmt.Errorf("failed to create temporary dir in %q: %w", sandboxesRoot, err)

	}