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plugins.go
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plugins.go
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package plugins
import (
"fmt"
"os"
"sort"
"strings"
"text/tabwriter"
introspection "github.com/containerd/containerd/api/services/introspection/v1"
"github.com/containerd/containerd/api/types"
"github.com/containerd/containerd/cmd/ctr/commands"
"github.com/containerd/containerd/platforms"
"github.com/opencontainers/image-spec/specs-go/v1"
"github.com/urfave/cli"
"google.golang.org/grpc/codes"
)
// Command is a cli command that outputs plugin information
var Command = cli.Command{
Name: "plugins",
Aliases: []string{"plugin"},
Usage: "provides information about containerd plugins",
Flags: []cli.Flag{
cli.BoolFlag{
Name: "quiet,q",
Usage: "print only the plugin ids",
},
cli.BoolFlag{
Name: "detailed,d",
Usage: "print detailed information about each plugin",
},
},
Action: func(context *cli.Context) error {
var (
quiet = context.Bool("quiet")
detailed = context.Bool("detailed")
)
client, ctx, cancel, err := commands.NewClient(context)
if err != nil {
return err
}
defer cancel()
ps := client.IntrospectionService()
response, err := ps.Plugins(ctx, &introspection.PluginsRequest{
Filters: context.Args(),
})
if err != nil {
return err
}
if quiet {
for _, plugin := range response.Plugins {
fmt.Println(plugin.ID)
}
return nil
}
w := tabwriter.NewWriter(os.Stdout, 4, 8, 4, ' ', 0)
if detailed {
first := true
for _, plugin := range response.Plugins {
if !first {
fmt.Fprintln(w, "\t\t\t")
}
first = false
fmt.Fprintln(w, "Type:\t", plugin.Type)
fmt.Fprintln(w, "ID:\t", plugin.ID)
if len(plugin.Requires) > 0 {
fmt.Fprintln(w, "Requires:\t")
for _, r := range plugin.Requires {
fmt.Fprintln(w, "\t", r)
}
}
if len(plugin.Platforms) > 0 {
fmt.Fprintln(w, "Platforms:\t", prettyPlatforms(plugin.Platforms))
}
if len(plugin.Exports) > 0 {
fmt.Fprintln(w, "Exports:\t")
for k, v := range plugin.Exports {
fmt.Fprintln(w, "\t", k, "\t", v)
}
}
if len(plugin.Capabilities) > 0 {
fmt.Fprintln(w, "Capabilities:\t", strings.Join(plugin.Capabilities, ","))
}
if plugin.InitErr != nil {
fmt.Fprintln(w, "Error:\t")
fmt.Fprintln(w, "\t Code:\t", codes.Code(plugin.InitErr.Code))
fmt.Fprintln(w, "\t Message:\t", plugin.InitErr.Message)
}
}
return w.Flush()
}
fmt.Fprintln(w, "TYPE\tID\tPLATFORMS\tSTATUS\t")
for _, plugin := range response.Plugins {
status := "ok"
if plugin.InitErr != nil {
status = "error"
}
var platformColumn = "-"
if len(plugin.Platforms) > 0 {
platformColumn = prettyPlatforms(plugin.Platforms)
}
if _, err := fmt.Fprintf(w, "%s\t%s\t%s\t%s\t\n",
plugin.Type,
plugin.ID,
platformColumn,
status,
); err != nil {
return err
}
}
return w.Flush()
},
}
func prettyPlatforms(pspb []types.Platform) string {
psm := map[string]struct{}{}
for _, p := range pspb {
psm[platforms.Format(v1.Platform{
OS: p.OS,
Architecture: p.Architecture,
Variant: p.Variant,
})] = struct{}{}
}
var ps []string
for p := range psm {
ps = append(ps, p)
}
sort.Stable(sort.StringSlice(ps))
return strings.Join(ps, ",")
}