mirror of
https://github.com/containers/podman.git
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842c6c7c67
implement a new command `podman generate spec` which can formulate a json specgen to be consumed by both the pod and container creation API. supported flags are --verbose (default true) print output to the terminal --compact print the json output in a single line format to be piped to the API --filename put the output in a file --clone rename the pod/ctr in the spec so it won't conflict w/ an existing entity Signed-off-by: Charlie Doern <cdoern@redhat.com>
72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
package pods
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import (
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"fmt"
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"io/ioutil"
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"github.com/containers/common/pkg/completion"
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"github.com/containers/podman/v4/cmd/podman/common"
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"github.com/containers/podman/v4/cmd/podman/registry"
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"github.com/containers/podman/v4/cmd/podman/utils"
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"github.com/containers/podman/v4/pkg/domain/entities"
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"github.com/spf13/cobra"
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)
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var (
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specCmd = &cobra.Command{
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Use: "spec [options] {CONTAINER|POD}",
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Short: "Generate Specgen JSON based on containers or pods",
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Long: "Generate Specgen JSON based on containers or pods",
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RunE: spec,
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Args: cobra.ExactArgs(1),
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ValidArgsFunction: common.AutocompleteContainersAndPods,
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Example: `podman generate spec ctrID`,
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}
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)
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var (
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opts *entities.GenerateSpecOptions
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)
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: specCmd,
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Parent: generateCmd,
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})
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opts = &entities.GenerateSpecOptions{}
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flags := specCmd.Flags()
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filenameFlagName := "filename"
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flags.StringVarP(&opts.FileName, filenameFlagName, "f", "", "Write output to the specified path")
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_ = specCmd.RegisterFlagCompletionFunc(filenameFlagName, completion.AutocompleteNone)
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compactFlagName := "compact"
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flags.BoolVarP(&opts.Compact, compactFlagName, "c", false, "Print the json in a compact format for consumption")
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nameFlagName := "name"
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flags.BoolVarP(&opts.Name, nameFlagName, "n", true, "Specify a new name for the generated spec")
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flags.SetNormalizeFunc(utils.AliasFlags)
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}
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func spec(cmd *cobra.Command, args []string) error {
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opts.ID = args[0]
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report, err := registry.ContainerEngine().GenerateSpec(registry.GetContext(), opts)
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if err != nil {
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return err
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}
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// if we are looking to print the output, do not mess it up by printing the path
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// if we are using -v the user probably expects to pipe the output somewhere else
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if len(opts.FileName) > 0 {
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err = ioutil.WriteFile(opts.FileName, report.Data, 0644)
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if err != nil {
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return err
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}
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fmt.Println(opts.FileName)
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} else {
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fmt.Println(string(report.Data))
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}
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return nil
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}
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