Merge pull request #6092 from vrothberg/v2-kube

add {generate,play} kube

1 files changed, 101 insertions, 0 deletions

diff --git a/cmd/podman/play/kube.go b/cmd/podman/play/kube.go
new file mode 100644
index 000000000..2499b54b9
--- /dev/null
+++ b/cmd/podman/play/kube.go
@@ -0,0 +1,101 @@
+package pods
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/containers/common/pkg/auth"
+	"github.com/containers/image/v5/types"
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/utils"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+// playKubeOptionsWrapper allows for separating CLI-only fields from API-only
+// fields.
+type playKubeOptionsWrapper struct {
+	entities.PlayKubeOptions
+
+	TLSVerifyCLI bool
+}
+
+var (
+	// https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/
+	defaultSeccompRoot = "/var/lib/kubelet/seccomp"
+	kubeOptions        = playKubeOptionsWrapper{}
+	kubeDescription    = `Command reads in a structured file of Kubernetes YAML.
+
+  It creates the pod and containers described in the YAML.  The containers within the pod are then started and the ID of the new Pod is output.`
+
+	kubeCmd = &cobra.Command{
+		Use:   "kube [flags] KUBEFILE",
+		Short: "Play a pod based on Kubernetes YAML.",
+		Long:  kubeDescription,
+		RunE:  kube,
+		Args:  cobra.ExactArgs(1),
+		Example: `podman play kube nginx.yml
+  podman play kube --creds user:password --seccomp-profile-root /custom/path apache.yml`,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: kubeCmd,
+		Parent:  playCmd,
+	})
+
+	flags := kubeCmd.Flags()
+	flags.SetNormalizeFunc(utils.AliasFlags)
+	flags.StringVar(&kubeOptions.Credentials, "creds", "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
+	flags.StringVar(&kubeOptions.Network, "network", "", "Connect pod to CNI network(s)")
+	flags.BoolVarP(&kubeOptions.Quiet, "quiet", "q", false, "Suppress output information when pulling images")
+	if !registry.IsRemote() {
+		flags.StringVar(&kubeOptions.Authfile, "authfile", auth.GetDefaultAuthFile(), "Path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
+		flags.StringVar(&kubeOptions.CertDir, "cert-dir", "", "`Pathname` of a directory containing TLS certificates and keys")
+		flags.BoolVar(&kubeOptions.TLSVerifyCLI, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
+		flags.StringVar(&kubeOptions.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")
+		flags.StringVar(&kubeOptions.SeccompProfileRoot, "seccomp-profile-root", defaultSeccompRoot, "Directory path for seccomp profiles")
+	}
+}
+
+func kube(cmd *cobra.Command, args []string) error {
+	// TLS verification in c/image is controlled via a `types.OptionalBool`
+	// which allows for distinguishing among set-true, set-false, unspecified
+	// which is important to implement a sane way of dealing with defaults of
+	// boolean CLI flags.
+	if cmd.Flags().Changed("tls-verify") {
+		kubeOptions.SkipTLSVerify = types.NewOptionalBool(!kubeOptions.TLSVerifyCLI)
+	}
+	if kubeOptions.Authfile != "" {
+		if _, err := os.Stat(kubeOptions.Authfile); err != nil {
+			return errors.Wrapf(err, "error getting authfile %s", kubeOptions.Authfile)
+		}
+	}
+
+	report, err := registry.ContainerEngine().PlayKube(registry.GetContext(), args[0], kubeOptions.PlayKubeOptions)
+	if err != nil {
+		return err
+	}
+
+	for _, l := range report.Logs {
+		fmt.Fprintf(os.Stderr, l)
+	}
+
+	fmt.Printf("Pod:\n%s\n", report.Pod)
+	switch len(report.Containers) {
+	case 0:
+		return nil
+	case 1:
+		fmt.Printf("Container:\n")
+	default:
+		fmt.Printf("Containers:\n")
+	}
+	for _, ctr := range report.Containers {
+		fmt.Println(ctr)
+	}
+
+	return nil
+}