V2 podman diff(changes) support

* Ported CLI command
* Added API endpoint
* Added bindings
* Updated swagger (TODO: n endpoints, one handler)

Signed-off-by: Jhon Honce <jhonce@redhat.com>

2 files changed, 48 insertions, 0 deletions

diff --git a/pkg/bindings/containers/diff.go b/pkg/bindings/containers/diff.go
new file mode 100644
index 000000000..82070ca9a
--- /dev/null
+++ b/pkg/bindings/containers/diff.go
@@ -0,0 +1,24 @@
+package containers
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/containers/libpod/pkg/bindings"
+	"github.com/containers/storage/pkg/archive"
+)
+
+// Diff provides the changes between two container layers
+func Diff(ctx context.Context, nameOrId string) ([]archive.Change, error) {
+	conn, err := bindings.GetClient(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	response, err := conn.DoRequest(nil, http.MethodGet, "/containers/%s/changes", nil, nameOrId)
+	if err != nil {
+		return nil, err
+	}
+	var changes []archive.Change
+	return changes, response.Process(&changes)
+}
diff --git a/pkg/bindings/images/diff.go b/pkg/bindings/images/diff.go
new file mode 100644
index 000000000..cfdd06a97
--- /dev/null
+++ b/pkg/bindings/images/diff.go
@@ -0,0 +1,24 @@
+package images
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/containers/libpod/pkg/bindings"
+	"github.com/containers/storage/pkg/archive"
+)
+
+// Diff provides the changes between two container layers
+func Diff(ctx context.Context, nameOrId string) ([]archive.Change, error) {
+	conn, err := bindings.GetClient(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/changes", nil, nameOrId)
+	if err != nil {
+		return nil, err
+	}
+	var changes []archive.Change
+	return changes, response.Process(&changes)
+}