archive: move stat-header handling into copy package

Move handling the stat header into `pkg/copy`.  All copy-related should
ideally be located in this package to increase locality and reduce
scattering where possible.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

1 files changed, 2 insertions, 43 deletions

diff --git a/pkg/api/handlers/compat/containers_archive.go b/pkg/api/handlers/compat/containers_archive.go
index 223eb2cd5..bb84f86be 100644
--- a/pkg/api/handlers/compat/containers_archive.go
+++ b/pkg/api/handlers/compat/containers_archive.go
@@ -1,13 +1,8 @@
 package compat
 
 import (
-	"bytes"
-	"encoding/base64"
-	"encoding/json"
 	"fmt"
 	"net/http"
-	"os"
-	"time"
 
 	"github.com/containers/podman/v2/libpod"
 	"github.com/containers/podman/v2/libpod/define"
@@ -71,12 +66,12 @@ func handleHeadAndGet(w http.ResponseWriter, r *http.Request, decoder *schema.De
 		utils.Error(w, "Not found.", http.StatusNotFound, errors.Wrapf(err, "error stating container path %q", query.Path))
 		return
 	}
-	statHeader, err := fileInfoToDockerStats(info)
+	statHeader, err := copy.EncodeFileInfo(info)
 	if err != nil {
 		utils.Error(w, "Something went wrong", http.StatusInternalServerError, err)
 		return
 	}
-	w.Header().Add("X-Docker-Container-Path-Stat", statHeader)
+	w.Header().Add(copy.XDockerContainerPathStatHeader, statHeader)
 
 	// Our work is done when the user is interested in the header only.
 	if r.Method == http.MethodHead {
@@ -98,42 +93,6 @@ func handleHeadAndGet(w http.ResponseWriter, r *http.Request, decoder *schema.De
 	}
 }
 
-func fileInfoToDockerStats(info *copy.FileInfo) (string, error) {
-	dockerStats := struct {
-		Name       string      `json:"name"`
-		Size       int64       `json:"size"`
-		Mode       os.FileMode `json:"mode"`
-		ModTime    time.Time   `json:"mtime"`
-		LinkTarget string      `json:"linkTarget"`
-	}{
-		Name:       info.Name,
-		Size:       info.Size,
-		Mode:       info.Mode,
-		ModTime:    info.ModTime,
-		LinkTarget: info.LinkTarget,
-	}
-
-	jsonBytes, err := json.Marshal(&dockerStats)
-	if err != nil {
-		return "", errors.Wrap(err, "failed to serialize file stats")
-	}
-
-	buff := bytes.NewBuffer(make([]byte, 0, 128))
-	base64encoder := base64.NewEncoder(base64.StdEncoding, buff)
-
-	_, err = base64encoder.Write(jsonBytes)
-	if err != nil {
-		return "", err
-	}
-
-	err = base64encoder.Close()
-	if err != nil {
-		return "", err
-	}
-
-	return buff.String(), nil
-}
-
 func handlePut(w http.ResponseWriter, r *http.Request, decoder *schema.Decoder, runtime *libpod.Runtime) {
 	query := struct {
 		Path string `schema:"path"`