Performance enhancement for podman images

Previous code was using slow routines to collect some of the information
needed to output images.  Specifically size was being calculated instead
of using the cached, already known size already available.  Also, straight-
lined several of the code paths.  Overall assessment is that these
improvements cut the time for images in half.

Signed-off-by: baude <bbaude@redhat.com>

Closes: #365
Approved by: mheon

1 files changed, 15 insertions, 0 deletions

diff --git a/pkg/inspect/inspect.go b/pkg/inspect/inspect.go
index e523d4c4d..806692425 100644
--- a/pkg/inspect/inspect.go
+++ b/pkg/inspect/inspect.go
@@ -202,3 +202,18 @@ type NetworkSettings struct {
 	IPv6Gateway            string               `json:"IPv6Gateway"`
 	MacAddress             string               `json:"MacAddress"`
 }
+
+// ImageResult is used for podman images for collection and output
+type ImageResult struct {
+	Tag          string
+	Repository   string
+	RepoDigests  []string
+	RepoTags     []string
+	ID           string
+	Digest       digest.Digest
+	ConfigDigest digest.Digest
+	Created      time.Time
+	Size         *uint64
+	Labels       map[string]string
+	Dangling     bool
+}