add {generate,play} kube

Add the `podman generate kube` and `podman play kube` command.  The code
has largely been copied from Podman v1 but restructured to not leak the
K8s core API into the (remote) client.

Both commands are added in the same commit to allow for enabling the
tests at the same time.

Move some exports from `cmd/podman/common` to the appropriate places in
the backend to avoid circular dependencies.

Move definitions of label annotations to `libpod/define` and set the
security-opt labels in the frontend to make kube tests pass.

Implement rest endpoints, bindings and the tunnel interface.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

3 files changed, 52 insertions, 0 deletions

diff --git a/pkg/domain/entities/engine_container.go b/pkg/domain/entities/engine_container.go
index 2e4e486b5..1bfac4514 100644
--- a/pkg/domain/entities/engine_container.go
+++ b/pkg/domain/entities/engine_container.go
@@ -43,6 +43,7 @@ type ContainerEngine interface {
 	ContainerWait(ctx context.Context, namesOrIds []string, options WaitOptions) ([]WaitReport, error)
 	Events(ctx context.Context, opts EventsOptions) error
 	GenerateSystemd(ctx context.Context, nameOrID string, opts GenerateSystemdOptions) (*GenerateSystemdReport, error)
+	GenerateKube(ctx context.Context, nameOrID string, opts GenerateKubeOptions) (*GenerateKubeReport, error)
 	SystemPrune(ctx context.Context, options SystemPruneOptions) (*SystemPruneReport, error)
 	HealthCheckRun(ctx context.Context, nameOrId string, options HealthCheckOptions) (*define.HealthCheckResults, error)
 	Info(ctx context.Context) (*define.Info, error)
@@ -50,6 +51,7 @@ type ContainerEngine interface {
 	NetworkInspect(ctx context.Context, namesOrIds []string, options NetworkInspectOptions) ([]NetworkInspectReport, error)
 	NetworkList(ctx context.Context, options NetworkListOptions) ([]*NetworkListReport, error)
 	NetworkRm(ctx context.Context, namesOrIds []string, options NetworkRmOptions) ([]*NetworkRmReport, error)
+	PlayKube(ctx context.Context, path string, opts PlayKubeOptions) (*PlayKubeReport, error)
 	PodCreate(ctx context.Context, opts PodCreateOptions) (*PodCreateReport, error)
 	PodExists(ctx context.Context, nameOrId string) (*BoolReport, error)
 	PodInspect(ctx context.Context, options PodInspectOptions) (*PodInspectReport, error)
diff --git a/pkg/domain/entities/generate.go b/pkg/domain/entities/generate.go
index 6d65b52f8..edd217615 100644
--- a/pkg/domain/entities/generate.go
+++ b/pkg/domain/entities/generate.go
@@ -1,5 +1,7 @@
 package entities
 
+import "io"
+
 // GenerateSystemdOptions control the generation of systemd unit files.
 type GenerateSystemdOptions struct {
 	// Files - generate files instead of printing to stdout.
@@ -20,3 +22,15 @@ type GenerateSystemdReport struct {
 	// entire content.
 	Output string
 }
+
+// GenerateKubeOptions control the generation of Kubernetes YAML files.
+type GenerateKubeOptions struct {
+	// Service - generate YAML for a Kubernetes _service_ object.
+	Service bool
+}
+
+// GenerateKubeReport
+type GenerateKubeReport struct {
+	// Reader - the io.Reader to reader the generated YAML file.
+	Reader io.Reader
+}
diff --git a/pkg/domain/entities/play.go b/pkg/domain/entities/play.go
new file mode 100644
index 000000000..93864c23b
--- /dev/null
+++ b/pkg/domain/entities/play.go
@@ -0,0 +1,36 @@
+package entities
+
+import "github.com/containers/image/v5/types"
+
+// PlayKubeOptions controls playing kube YAML files.
+type PlayKubeOptions struct {
+	// Authfile - path to an authentication file.
+	Authfile string
+	// CertDir - to a directory containing TLS certifications and keys.
+	CertDir string
+	// Credentials - `username:password` for authentication against a
+	// container registry.
+	Credentials string
+	// Network - name of the CNI network to connect to.
+	Network string
+	// Quiet - suppress output when pulling images.
+	Quiet bool
+	// SignaturePolicy - path to a signature-policy file.
+	SignaturePolicy string
+	// SkipTLSVerify - skip https and certificate validation when
+	// contacting container registries.
+	SkipTLSVerify types.OptionalBool
+	// SeccompProfileRoot - path to a directory containing seccomp
+	// profiles.
+	SeccompProfileRoot string
+}
+
+// PlayKubeReport contains the results of running play kube.
+type PlayKubeReport struct {
+	// Pod - the ID of the created pod.
+	Pod string
+	// Containers - the IDs of the containers running in the created pod.
+	Containers []string
+	// Logs - non-fatal erros and log messages while processing.
+	Logs []string
+}