forked from moby/buildkit
/
workers.go
92 lines (78 loc) · 1.76 KB
/
workers.go
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package debug
import (
"context"
"fmt"
"os"
"sort"
"text/tabwriter"
"github.com/moby/buildkit/client"
"github.com/urfave/cli"
)
var WorkersCommand = cli.Command{
Name: "workers",
Usage: "list workers",
Action: listWorkers,
Flags: []cli.Flag{
cli.StringSliceFlag{
Name: "filter, f",
Usage: "containerd-style filter string slice",
},
cli.BoolFlag{
Name: "verbose, v",
Usage: "Verbose output",
},
},
}
func resolveClient(c *cli.Context) (*client.Client, error) {
return client.New(c.GlobalString("addr"), client.WithBlock())
}
func listWorkers(clicontext *cli.Context) error {
c, err := resolveClient(clicontext)
if err != nil {
return err
}
workers, err := c.ListWorkers(commandContext(clicontext), client.WithWorkerFilter(clicontext.StringSlice("filter")))
if err != nil {
return err
}
tw := tabwriter.NewWriter(os.Stdout, 1, 8, 1, '\t', 0)
if clicontext.Bool("verbose") {
printWorkersVerbose(tw, workers)
} else {
printWorkersTable(tw, workers)
}
return nil
}
func printWorkersVerbose(tw *tabwriter.Writer, winfo []*client.WorkerInfo) {
for _, wi := range winfo {
fmt.Fprintf(tw, "ID:\t%s\n", wi.ID)
fmt.Fprintf(tw, "Labels:\n")
for _, k := range sortedKeys(wi.Labels) {
v := wi.Labels[k]
fmt.Fprintf(tw, "\t%s:\t%s\n", k, v)
}
fmt.Fprintf(tw, "\n")
}
tw.Flush()
}
func printWorkersTable(tw *tabwriter.Writer, winfo []*client.WorkerInfo) {
fmt.Fprintln(tw, "ID")
for _, wi := range winfo {
id := wi.ID
fmt.Fprintf(tw, "%s\n", id)
}
tw.Flush()
}
func sortedKeys(m map[string]string) []string {
s := make([]string, len(m))
i := 0
for k := range m {
s[i] = k
i++
}
sort.Strings(s)
return s
}
func commandContext(c *cli.Context) context.Context {
return c.App.Metadata["context"].(context.Context)
}