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-rw-r--r--tools/nixery/server/builder/builder.go46
-rw-r--r--tools/nixery/server/builder/cache.go76
2 files changed, 42 insertions, 80 deletions
diff --git a/tools/nixery/server/builder/builder.go b/tools/nixery/server/builder/builder.go
index 14696f58a80f..78d09b55b1ec 100644
--- a/tools/nixery/server/builder/builder.go
+++ b/tools/nixery/server/builder/builder.go
@@ -168,11 +168,10 @@ func callNix(program, image string, args []string) ([]byte, error) {
 	go logNix(program, image, errpipe)
 
 	if err = cmd.Start(); err != nil {
-		log.WithFields(log.Fields{
+		log.WithError(err).WithFields(log.Fields{
 			"image": image,
 			"cmd":   program,
-			"error": err,
-		}).Error("error starting command")
+		}).Error("error invoking Nix")
 
 		return nil, err
 	}
@@ -185,12 +184,11 @@ func callNix(program, image string, args []string) ([]byte, error) {
 	stdout, _ := ioutil.ReadAll(outpipe)
 
 	if err = cmd.Wait(); err != nil {
-		log.WithFields(log.Fields{
+		log.WithError(err).WithFields(log.Fields{
 			"image":  image,
 			"cmd":    program,
-			"error":  err,
 			"stdout": stdout,
-		}).Info("Nix execution failed")
+		}).Info("failed to invoke Nix")
 
 		return nil, err
 	}
@@ -198,10 +196,9 @@ func callNix(program, image string, args []string) ([]byte, error) {
 	resultFile := strings.TrimSpace(string(stdout))
 	buildOutput, err := ioutil.ReadFile(resultFile)
 	if err != nil {
-		log.WithFields(log.Fields{
+		log.WithError(err).WithFields(log.Fields{
 			"image": image,
 			"file":  resultFile,
-			"error": err,
 		}).Info("failed to read Nix result file")
 
 		return nil, err
@@ -303,10 +300,9 @@ func prepareLayers(ctx context.Context, s *State, image *Image, result *ImageRes
 	entry, err := uploadHashLayer(ctx, s, slkey, func(w io.Writer) error {
 		f, err := os.Open(result.SymlinkLayer.Path)
 		if err != nil {
-			log.WithFields(log.Fields{
+			log.WithError(err).WithFields(log.Fields{
 				"image": image.Name,
 				"tag":   image.Tag,
-				"error": err,
 				"layer": slkey,
 			}).Error("failed to upload symlink layer")
 
@@ -364,10 +360,9 @@ func renameObject(ctx context.Context, s *State, old, new string) error {
 	// renaming/moving them, hence a deletion call afterwards is
 	// required.
 	if err = s.Bucket.Object(old).Delete(ctx); err != nil {
-		log.WithFields(log.Fields{
-			"new":   new,
-			"old":   old,
-			"error": err,
+		log.WithError(err).WithFields(log.Fields{
+			"new": new,
+			"old": old,
 		}).Warn("failed to delete renamed object")
 
 		// this error should not break renaming and is not returned
@@ -421,19 +416,15 @@ func uploadHashLayer(ctx context.Context, s *State, key string, lw layerWriter)
 
 	err := lw(multi)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to create and upload layer")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to create and upload layer")
 
 		return nil, err
 	}
 
 	if err = sw.Close(); err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to upload layer to staging")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to upload layer to staging")
 	}
 
 	sha256sum := fmt.Sprintf("%x", shasum.Sum([]byte{}))
@@ -442,10 +433,8 @@ func uploadHashLayer(ctx context.Context, s *State, key string, lw layerWriter)
 	// remains is to move it to the correct location and cache it.
 	err = renameObject(ctx, s, "staging/"+key, "layers/"+sha256sum)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to move layer from staging")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to move layer from staging")
 
 		return nil, err
 	}
@@ -478,7 +467,7 @@ func BuildImage(ctx context.Context, s *State, image *Image) (*BuildResult, erro
 
 	imageResult, err := prepareImage(s, image)
 	if err != nil {
-		return nil, fmt.Errorf("failed to prepare image '%s': %s", image.Name, err)
+		return nil, err
 	}
 
 	if imageResult.Error != "" {
@@ -502,10 +491,9 @@ func BuildImage(ctx context.Context, s *State, image *Image) (*BuildResult, erro
 	}
 
 	if _, err = uploadHashLayer(ctx, s, c.SHA256, lw); err != nil {
-		log.WithFields(log.Fields{
+		log.WithError(err).WithFields(log.Fields{
 			"image": image.Name,
 			"tag":   image.Tag,
-			"error": err,
 		}).Error("failed to upload config")
 
 		return nil, err
diff --git a/tools/nixery/server/builder/cache.go b/tools/nixery/server/builder/cache.go
index 916de3af168c..88bf30de4812 100644
--- a/tools/nixery/server/builder/cache.go
+++ b/tools/nixery/server/builder/cache.go
@@ -63,10 +63,8 @@ func (c *LocalCache) manifestFromLocalCache(key string) (json.RawMessage, bool)
 		// This is a debug log statement because failure to
 		// read the manifest key is currently expected if it
 		// is not cached.
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Debug("failed to read manifest from local cache")
+		log.WithError(err).WithField("manifest", key).
+			Debug("failed to read manifest from local cache")
 
 		return nil, false
 	}
@@ -74,10 +72,8 @@ func (c *LocalCache) manifestFromLocalCache(key string) (json.RawMessage, bool)
 
 	m, err := ioutil.ReadAll(f)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Error("failed to read manifest from local cache")
+		log.WithError(err).WithField("manifest", key).
+			Error("failed to read manifest from local cache")
 
 		return nil, false
 	}
@@ -96,10 +92,8 @@ func (c *LocalCache) localCacheManifest(key string, m json.RawMessage) {
 
 	err := ioutil.WriteFile(c.mdir+key, []byte(m), 0644)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Error("failed to locally cache manifest")
+		log.WithError(err).WithField("manifest", key).
+			Error("failed to locally cache manifest")
 	}
 }
 
@@ -136,10 +130,8 @@ func manifestFromCache(ctx context.Context, s *State, key string) (json.RawMessa
 
 	r, err := obj.NewReader(ctx)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Error("failed to retrieve manifest from bucket cache")
+		log.WithError(err).WithField("manifest", key).
+			Error("failed to retrieve manifest from bucket cache")
 
 		return nil, false
 	}
@@ -147,18 +139,14 @@ func manifestFromCache(ctx context.Context, s *State, key string) (json.RawMessa
 
 	m, err := ioutil.ReadAll(r)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Error("failed to read cached manifest from bucket")
+		log.WithError(err).WithField("manifest", key).
+			Error("failed to read cached manifest from bucket")
 
 		return nil, false
 	}
 
 	go s.Cache.localCacheManifest(key, m)
-	log.WithFields(log.Fields{
-		"manifest": key,
-	}).Info("retrieved manifest from GCS")
+	log.WithField("manifest", key).Info("retrieved manifest from GCS")
 
 	return json.RawMessage(m), true
 }
@@ -173,19 +161,15 @@ func cacheManifest(ctx context.Context, s *State, key string, m json.RawMessage)
 
 	size, err := io.Copy(w, r)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Error("failed to cache manifest to GCS")
+		log.WithError(err).WithField("manifest", key).
+			Error("failed to cache manifest to GCS")
 
 		return
 	}
 
 	if err = w.Close(); err != nil {
-		log.WithFields(log.Fields{
-			"manifest": key,
-			"error":    err,
-		}).Error("failed to cache manifest to GCS")
+		log.WithError(err).WithField("manifest", key).
+			Error("failed to cache manifest to GCS")
 
 		return
 	}
@@ -211,10 +195,8 @@ func layerFromCache(ctx context.Context, s *State, key string) (*manifest.Entry,
 
 	r, err := obj.NewReader(ctx)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to retrieve cached layer from GCS")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to retrieve cached layer from GCS")
 
 		return nil, false
 	}
@@ -223,10 +205,8 @@ func layerFromCache(ctx context.Context, s *State, key string) (*manifest.Entry,
 	jb := bytes.NewBuffer([]byte{})
 	_, err = io.Copy(jb, r)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to read cached layer from GCS")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to read cached layer from GCS")
 
 		return nil, false
 	}
@@ -234,10 +214,8 @@ func layerFromCache(ctx context.Context, s *State, key string) (*manifest.Entry,
 	var entry manifest.Entry
 	err = json.Unmarshal(jb.Bytes(), &entry)
 	if err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to unmarshal cached layer")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to unmarshal cached layer")
 
 		return nil, false
 	}
@@ -257,19 +235,15 @@ func cacheLayer(ctx context.Context, s *State, key string, entry manifest.Entry)
 
 	_, err := io.Copy(w, bytes.NewReader(j))
 	if err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to cache layer")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to cache layer")
 
 		return
 	}
 
 	if err = w.Close(); err != nil {
-		log.WithFields(log.Fields{
-			"layer": key,
-			"error": err,
-		}).Error("failed to cache layer")
+		log.WithError(err).WithField("layer", key).
+			Error("failed to cache layer")
 
 		return
 	}