pkg/manifests: add a manifest list build/manipulation API

Rough out an API for building and manipulating the contents of manifest lists. Signed-off-by: Nalin Dahyabhai <[email protected]> Closes: #1902 Approved by: rhatdan
containers · Oct 28, 2019 · 7b1a87a · 7b1a87a
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diff --git a/pkg/manifests/errors.go b/pkg/manifests/errors.go
@@ -0,0 +1,16 @@
+package manifests
+
+import (
+	"errors"
+)
+
+var (
+	// ErrDigestNotFound is returned when we look for an image instance
+	// with a particular digest in a list or index, and fail to find it.
+	ErrDigestNotFound = errors.New("no image instance matching the specified digest was found in the list or index")
+	// ErrManifestTypeNotSupported is returned when we attempt to parse a
+	// manifest with a known MIME type as a list or index, or when we attempt
+	// to serialize a list or index to a manifest with a MIME type that we
+	// don't know how to encode.
+	ErrManifestTypeNotSupported = errors.New("manifest type not supported")
+)