From 4b7e2b3a064fe0d558d2a87173bc50e7de31f441 Mon Sep 17 00:00:00 2001
From: dlorenc <lorenc.d@gmail.com>
Date: Thu, 21 Feb 2019 14:09:22 -0600
Subject: [PATCH] Update the cache warmer to also save manifests. (#576)

---
 pkg/cache/warm.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkg/cache/warm.go b/pkg/cache/warm.go
index 02bb550fe..c03746e0b 100644
--- a/pkg/cache/warm.go
+++ b/pkg/cache/warm.go
@@ -18,6 +18,7 @@ package cache
 
 import (
 	"fmt"
+	"io/ioutil"
 	"path"
 
 	"github.com/GoogleContainerTools/kaniko/pkg/config"
@@ -53,6 +54,15 @@ func WarmCache(opts *config.WarmerOptions) error {
 		if err != nil {
 			return errors.Wrap(err, fmt.Sprintf("Failed to write %s to cache", image))
 		}
+
+		mfst, err := img.RawManifest()
+		if err != nil {
+			return errors.Wrap(err, fmt.Sprintf("Failed to retrieve manifest for %s", image))
+		}
+		mfstPath := cachePath + ".json"
+		if err := ioutil.WriteFile(mfstPath, mfst, 0666); err != nil {
+			return errors.Wrap(err, fmt.Sprintf("Failed to save manifest for %s", image))
+		}
 		logrus.Debugf("Wrote %s to cache", image)
 	}
 	return nil