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>

4 files changed, 37 insertions, 2 deletions

diff --git a/pkg/domain/infra/abi/containers.go b/pkg/domain/infra/abi/containers.go
index 828ee56f0..ccbe6d4fd 100644
--- a/pkg/domain/infra/abi/containers.go
+++ b/pkg/domain/infra/abi/containers.go
@@ -599,9 +599,9 @@ func (ic *ContainerEngine) ContainerStart(ctx context.Context, namesOrIds []stri
 				ExitCode: 125,
 			}
 			if err := ctr.Start(ctx, ctr.PodID() != ""); err != nil {
-				//if lastError != nil {
+				// if lastError != nil {
 				//	fmt.Fprintln(os.Stderr, lastError)
-				//}
+				// }
 				report.Err = err
 				if errors.Cause(err) == define.ErrWillDeadlock {
 					report.Err = errors.Wrapf(err, "please run 'podman system renumber' to resolve deadlocks")
@@ -623,6 +623,19 @@ func (ic *ContainerEngine) ContainerList(ctx context.Context, options entities.C
 	return ps.GetContainerLists(ic.Libpod, options)
 }
 
+// ContainerDiff provides changes to given container
+func (ic *ContainerEngine) ContainerDiff(ctx context.Context, nameOrId string, opts entities.DiffOptions) (*entities.DiffReport, error) {
+	if opts.Latest {
+		ctnr, err := ic.Libpod.GetLatestContainer()
+		if err != nil {
+			return nil, errors.Wrap(err, "unable to get latest container")
+		}
+		nameOrId = ctnr.ID()
+	}
+	changes, err := ic.Libpod.GetDiff("", nameOrId)
+	return &entities.DiffReport{Changes: changes}, err
+}
+
 func (ic *ContainerEngine) ContainerRun(ctx context.Context, opts entities.ContainerRunOptions) (*entities.ContainerRunReport, error) {
 	var (
 		joinPod bool
diff --git a/pkg/domain/infra/abi/images.go b/pkg/domain/infra/abi/images.go
index 9d706a112..2edef2723 100644
--- a/pkg/domain/infra/abi/images.go
+++ b/pkg/domain/infra/abi/images.go
@@ -413,3 +413,11 @@ func (ir *ImageEngine) Save(ctx context.Context, nameOrId string, tags []string,
 	}
 	return newImage.Save(ctx, nameOrId, options.Format, options.Output, tags, options.Quiet, options.Compress)
 }
+
+func (ir *ImageEngine) Diff(_ context.Context, nameOrId string, _ entities.DiffOptions) (*entities.DiffReport, error) {
+	changes, err := ir.Libpod.GetDiff("", nameOrId)
+	if err != nil {
+		return nil, err
+	}
+	return &entities.DiffReport{Changes: changes}, nil
+}
diff --git a/pkg/domain/infra/tunnel/containers.go b/pkg/domain/infra/tunnel/containers.go
index e96200c5b..b22c6e3ba 100644
--- a/pkg/domain/infra/tunnel/containers.go
+++ b/pkg/domain/infra/tunnel/containers.go
@@ -324,3 +324,8 @@ func (ic *ContainerEngine) ContainerList(ctx context.Context, options entities.C
 func (ic *ContainerEngine) ContainerRun(ctx context.Context, opts entities.ContainerRunOptions) (*entities.ContainerRunReport, error) {
 	return nil, errors.New("not implemented")
 }
+
+func (ic *ContainerEngine) ContainerDiff(ctx context.Context, nameOrId string, _ entities.DiffOptions) (*entities.DiffReport, error) {
+	changes, err := containers.Diff(ic.ClientCxt, nameOrId)
+	return &entities.DiffReport{Changes: changes}, err
+}
diff --git a/pkg/domain/infra/tunnel/images.go b/pkg/domain/infra/tunnel/images.go
index 516914a68..66abd7f47 100644
--- a/pkg/domain/infra/tunnel/images.go
+++ b/pkg/domain/infra/tunnel/images.go
@@ -241,3 +241,12 @@ func (ir *ImageEngine) Save(ctx context.Context, nameOrId string, tags []string,
 	}
 	return utils2.UntarToFileSystem(options.Output, f, nil)
 }
+
+// Diff reports the changes to the given image
+func (ir *ImageEngine) Diff(ctx context.Context, nameOrId string, _ entities.DiffOptions) (*entities.DiffReport, error) {
+	changes, err := images.Diff(ir.ClientCxt, nameOrId)
+	if err != nil {
+		return nil, err
+	}
+	return &entities.DiffReport{Changes: changes}, nil
+}