Add "podman kube generate" command

"podman kube generate" creates Kubernetes YAML from Podman containers,
pods or volumes. Users will still be able to use "podman generate
kube" as an alias of "kube generate".

Signed-off-by: Niall Crowe <nicrowe@redhat.com>

5 files changed, 47 insertions, 2 deletions

diff --git a/pkg/api/handlers/libpod/kube.go b/pkg/api/handlers/libpod/kube.go
index 6cad58795..5c891b707 100644
--- a/pkg/api/handlers/libpod/kube.go
+++ b/pkg/api/handlers/libpod/kube.go
@@ -121,3 +121,7 @@ func KubePlayDown(w http.ResponseWriter, r *http.Request) {
 	}
 	utils.WriteResponse(w, http.StatusOK, report)
 }
+
+func KubeGenerate(w http.ResponseWriter, r *http.Request) {
+	GenerateKube(w, r)
+}
diff --git a/pkg/api/server/register_play.go b/pkg/api/server/register_kube.go
index 76e150504..0c3cd1d04 100644
--- a/pkg/api/server/register_play.go
+++ b/pkg/api/server/register_kube.go
@@ -7,7 +7,7 @@ import (
 	"github.com/gorilla/mux"
 )
 
-func (s *APIServer) registerPlayHandlers(r *mux.Router) error {
+func (s *APIServer) registerKubeHandlers(r *mux.Router) error {
 	// swagger:operation POST /libpod/play/kube libpod PlayKubeLibpod
 	// ---
 	// tags:
@@ -78,5 +78,38 @@ func (s *APIServer) registerPlayHandlers(r *mux.Router) error {
 	//     $ref: "#/responses/internalError"
 	r.HandleFunc(VersionedPath("/libpod/play/kube"), s.APIHandler(libpod.PlayKubeDown)).Methods(http.MethodDelete)
 	r.HandleFunc(VersionedPath("/libpod/kube/play"), s.APIHandler(libpod.KubePlayDown)).Methods(http.MethodDelete)
+	// swagger:operation GET /libpod/generate/kube libpod GenerateKubeLibpod
+	// ---
+	// tags:
+	//  - containers
+	//  - pods
+	// summary: Generate a Kubernetes YAML file.
+	// description: Generate Kubernetes YAML based on a pod or container.
+	// parameters:
+	//  - in: query
+	//    name: names
+	//    type: array
+	//    items:
+	//       type: string
+	//    required: true
+	//    description: Name or ID of the container or pod.
+	//  - in: query
+	//    name: service
+	//    type: boolean
+	//    default: false
+	//    description: Generate YAML for a Kubernetes service object.
+	// produces:
+	// - text/vnd.yaml
+	// - application/json
+	// responses:
+	//   200:
+	//     description: Kubernetes YAML file describing pod
+	//     schema:
+	//      type: string
+	//      format: binary
+	//   500:
+	//     $ref: "#/responses/internalError"
+	r.HandleFunc(VersionedPath("/libpod/generate/kube"), s.APIHandler(libpod.GenerateKube)).Methods(http.MethodGet)
+	r.HandleFunc(VersionedPath("/libpod/kube/generate"), s.APIHandler(libpod.KubeGenerate)).Methods(http.MethodGet)
 	return nil
 }
diff --git a/pkg/api/server/server.go b/pkg/api/server/server.go
index 5482a8ec2..39423dabe 100644
--- a/pkg/api/server/server.go
+++ b/pkg/api/server/server.go
@@ -130,7 +130,7 @@ func newServer(runtime *libpod.Runtime, listener net.Listener, opts entities.Ser
 		server.registerMonitorHandlers,
 		server.registerNetworkHandlers,
 		server.registerPingHandlers,
-		server.registerPlayHandlers,
+		server.registerKubeHandlers,
 		server.registerPluginsHandlers,
 		server.registerPodsHandlers,
 		server.registerSecretHandlers,
diff --git a/pkg/bindings/kube/kube.go b/pkg/bindings/kube/kube.go
index db40c5134..e727439cf 100644
--- a/pkg/bindings/kube/kube.go
+++ b/pkg/bindings/kube/kube.go
@@ -10,6 +10,7 @@ import (
 	"github.com/containers/image/v5/types"
 	"github.com/containers/podman/v4/pkg/auth"
 	"github.com/containers/podman/v4/pkg/bindings"
+	"github.com/containers/podman/v4/pkg/bindings/generate"
 	"github.com/containers/podman/v4/pkg/domain/entities"
 	"github.com/sirupsen/logrus"
 )
@@ -94,3 +95,8 @@ func DownWithBody(ctx context.Context, body io.Reader) (*entities.KubePlayReport
 	}
 	return &report, nil
 }
+
+// Kube generate Kubernetes YAML (v1 specification)
+func Generate(ctx context.Context, nameOrIDs []string, options generate.KubeOptions) (*entities.GenerateKubeReport, error) {
+	return generate.Kube(ctx, nameOrIDs, &options)
+}
diff --git a/pkg/domain/entities/generate.go b/pkg/domain/entities/generate.go
index cc5fbb6fb..f18e79b47 100644
--- a/pkg/domain/entities/generate.go
+++ b/pkg/domain/entities/generate.go
@@ -46,6 +46,8 @@ type GenerateKubeOptions struct {
 	Service bool
 }
 
+type KubeGenerateOptions = GenerateKubeOptions
+
 // GenerateKubeReport
 //
 // FIXME: Podman4.0 should change io.Reader to io.ReaderCloser