111 lines
3.1 KiB
Go
111 lines
3.1 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
|
|
"github.com/containers/libpod/cmd/podman/cliconfig"
|
|
"github.com/containers/libpod/pkg/adapter"
|
|
podmanVersion "github.com/containers/libpod/version"
|
|
"github.com/ghodss/yaml"
|
|
"github.com/pkg/errors"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
var (
|
|
containerKubeCommand cliconfig.GenerateKubeValues
|
|
containerKubeDescription = `Command generates Kubernetes Pod YAML (v1 specification) from a podman container or pod.
|
|
|
|
Whether the input is for a container or pod, Podman will always generate the specification as a Pod. The input may be in the form of a pod or container name or ID.`
|
|
_containerKubeCommand = &cobra.Command{
|
|
Use: "kube [flags] CONTAINER | POD",
|
|
Short: "Generate Kubernetes pod YAML from a container or pod",
|
|
Long: containerKubeDescription,
|
|
RunE: func(cmd *cobra.Command, args []string) error {
|
|
containerKubeCommand.InputArgs = args
|
|
containerKubeCommand.GlobalFlags = MainGlobalOpts
|
|
containerKubeCommand.Remote = remoteclient
|
|
return generateKubeYAMLCmd(&containerKubeCommand)
|
|
},
|
|
Example: `podman generate kube ctrID
|
|
podman generate kube podID
|
|
podman generate kube --service podID`,
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
containerKubeCommand.Command = _containerKubeCommand
|
|
containerKubeCommand.SetHelpTemplate(HelpTemplate())
|
|
containerKubeCommand.SetUsageTemplate(UsageTemplate())
|
|
flags := containerKubeCommand.Flags()
|
|
flags.BoolVarP(&containerKubeCommand.Service, "service", "s", false, "Generate YAML for kubernetes service object")
|
|
flags.StringVarP(&containerKubeCommand.Filename, "filename", "f", "", "Filename to output to")
|
|
}
|
|
|
|
func generateKubeYAMLCmd(c *cliconfig.GenerateKubeValues) error {
|
|
var (
|
|
//podYAML *v1.Pod
|
|
err error
|
|
output []byte
|
|
//pod *libpod.Pod
|
|
marshalledPod []byte
|
|
marshalledService []byte
|
|
)
|
|
|
|
args := c.InputArgs
|
|
if len(args) != 1 {
|
|
return errors.Errorf("you must provide exactly one container|pod ID or name")
|
|
}
|
|
|
|
runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "could not get runtime")
|
|
}
|
|
defer runtime.DeferredShutdown(false)
|
|
|
|
podYAML, serviceYAML, err := runtime.GenerateKube(c)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// Marshall the results
|
|
marshalledPod, err = yaml.Marshal(podYAML)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if c.Service {
|
|
marshalledService, err = yaml.Marshal(serviceYAML)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
header := `# Generation of Kubernetes YAML is still under development!
|
|
#
|
|
# Save the output of this file and use kubectl create -f to import
|
|
# it into Kubernetes.
|
|
#
|
|
# Created with podman-%s
|
|
`
|
|
output = append(output, []byte(fmt.Sprintf(header, podmanVersion.Version))...)
|
|
output = append(output, marshalledPod...)
|
|
if c.Bool("service") {
|
|
output = append(output, []byte("---\n")...)
|
|
output = append(output, marshalledService...)
|
|
}
|
|
|
|
if c.Filename != "" {
|
|
if _, err := os.Stat(c.Filename); err == nil {
|
|
return errors.Errorf("cannot write to %q - file exists", c.Filename)
|
|
}
|
|
|
|
if err := ioutil.WriteFile(c.Filename, output, 0644); err != nil {
|
|
return err
|
|
}
|
|
} else {
|
|
// Output the v1.Pod with the v1.Container
|
|
fmt.Println(string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|