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package manager
import (
"fmt"
"os"
"sync"
"github.com/docker/cli/cli-plugins/metadata"
"github.com/docker/cli/cli/config"
"github.com/spf13/cobra"
)
var pluginCommandStubsOnce sync.Once
// AddPluginCommandStubs adds a stub cobra.Commands for each valid and invalid
// plugin. The command stubs will have several annotations added, see
// `CommandAnnotationPlugin*`.
func AddPluginCommandStubs(dockerCLI config.Provider, rootCmd *cobra.Command) (err error) {
pluginCommandStubsOnce.Do(func() {
var plugins []Plugin
plugins, err = ListPlugins(dockerCLI, rootCmd)
if err != nil {
return
}
for _, p := range plugins {
vendor := p.Vendor
if vendor == "" {
vendor = "unknown"
}
annotations := map[string]string{
metadata.CommandAnnotationPlugin: "true",
metadata.CommandAnnotationPluginVendor: vendor,
metadata.CommandAnnotationPluginVersion: p.Version,
}
if p.Err != nil {
annotations[metadata.CommandAnnotationPluginInvalid] = p.Err.Error()
}
rootCmd.AddCommand(&cobra.Command{
Use: p.Name,
Short: p.ShortDescription,
Hidden: p.Hidden,
Run: func(_ *cobra.Command, _ []string) {},
Annotations: annotations,
DisableFlagParsing: true,
RunE: func(cmd *cobra.Command, args []string) error {
flags := rootCmd.PersistentFlags()
flags.SetOutput(nil)
perr := flags.Parse(args)
if perr != nil {
return err
}
if flags.Changed("help") {
cmd.HelpFunc()(rootCmd, args)
return nil
}
return fmt.Errorf("docker: unknown command: docker %s\n\nRun 'docker --help' for more information", cmd.Name())
},
ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
// Delegate completion to plugin
cargs := []string{p.Path, cobra.ShellCompRequestCmd, p.Name}
cargs = append(cargs, args...)
cargs = append(cargs, toComplete)
os.Args = cargs
runCommand, runErr := PluginRunCommand(dockerCLI, p.Name, cmd)
if runErr != nil {
return nil, cobra.ShellCompDirectiveError
}
runErr = runCommand.Run()
if runErr == nil {
os.Exit(0) // plugin already rendered complete data
}
return nil, cobra.ShellCompDirectiveError
},
})
}
})
return err
}
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