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inspect.go
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/
inspect.go
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package commands
import (
"context"
"fmt"
"os"
"strings"
"text/tabwriter"
"time"
"github.com/docker/buildx/build"
"github.com/docker/buildx/driver"
"github.com/docker/buildx/store"
"github.com/docker/buildx/util/platformutil"
"github.com/docker/buildx/util/progress"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/moby/buildkit/util/appcontext"
specs "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/spf13/cobra"
"golang.org/x/sync/errgroup"
)
type inspectOptions struct {
bootstrap bool
builder string
}
type dinfo struct {
di *build.DriverInfo
info *driver.Info
platforms []specs.Platform
err error
}
type nginfo struct {
ng *store.NodeGroup
drivers []dinfo
err error
}
func runInspect(dockerCli command.Cli, in inspectOptions) error {
ctx := appcontext.Context()
txn, release, err := getStore(dockerCli)
if err != nil {
return err
}
defer release()
var ng *store.NodeGroup
if in.builder != "" {
ng, err = getNodeGroup(txn, dockerCli, in.builder)
if err != nil {
return err
}
} else {
ng, err = getCurrentInstance(txn, dockerCli)
if err != nil {
return err
}
}
if ng == nil {
ng = &store.NodeGroup{
Name: "default",
Nodes: []store.Node{{
Name: "default",
Endpoint: "default",
}},
}
}
ngi := &nginfo{ng: ng}
timeoutCtx, cancel := context.WithTimeout(ctx, 20*time.Second)
defer cancel()
err = loadNodeGroupData(timeoutCtx, dockerCli, ngi)
var bootNgi *nginfo
if in.bootstrap {
var ok bool
ok, err = boot(ctx, ngi, dockerCli)
if err != nil {
return err
}
bootNgi = ngi
if ok {
ngi = &nginfo{ng: ng}
err = loadNodeGroupData(ctx, dockerCli, ngi)
}
}
w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, ' ', 0)
fmt.Fprintf(w, "Name:\t%s\n", ngi.ng.Name)
fmt.Fprintf(w, "Driver:\t%s\n", ngi.ng.Driver)
if err != nil {
fmt.Fprintf(w, "Error:\t%s\n", err.Error())
} else if ngi.err != nil {
fmt.Fprintf(w, "Error:\t%s\n", ngi.err.Error())
}
if err == nil {
fmt.Fprintln(w, "")
fmt.Fprintln(w, "Nodes:")
for i, n := range ngi.ng.Nodes {
if i != 0 {
fmt.Fprintln(w, "")
}
fmt.Fprintf(w, "Name:\t%s\n", n.Name)
fmt.Fprintf(w, "Endpoint:\t%s\n", n.Endpoint)
if err := ngi.drivers[i].di.Err; err != nil {
fmt.Fprintf(w, "Error:\t%s\n", err.Error())
} else if err := ngi.drivers[i].err; err != nil {
fmt.Fprintf(w, "Error:\t%s\n", err.Error())
} else if bootNgi != nil && len(bootNgi.drivers) > i && bootNgi.drivers[i].err != nil {
fmt.Fprintf(w, "Error:\t%s\n", bootNgi.drivers[i].err.Error())
} else {
fmt.Fprintf(w, "Status:\t%s\n", ngi.drivers[i].info.Status)
if len(n.Flags) > 0 {
fmt.Fprintf(w, "Flags:\t%s\n", strings.Join(n.Flags, " "))
}
fmt.Fprintf(w, "Platforms:\t%s\n", strings.Join(platformutil.FormatInGroups(n.Platforms, ngi.drivers[i].platforms), ", "))
}
}
}
w.Flush()
return nil
}
func inspectCmd(dockerCli command.Cli, rootOpts *rootOptions) *cobra.Command {
var options inspectOptions
cmd := &cobra.Command{
Use: "inspect [NAME]",
Short: "Inspect current builder instance",
Args: cli.RequiresMaxArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
options.builder = rootOpts.builder
if len(args) > 0 {
options.builder = args[0]
}
return runInspect(dockerCli, options)
},
}
flags := cmd.Flags()
flags.BoolVar(&options.bootstrap, "bootstrap", false, "Ensure builder has booted before inspecting")
_ = flags
return cmd
}
func boot(ctx context.Context, ngi *nginfo, dockerCli command.Cli) (bool, error) {
toBoot := make([]int, 0, len(ngi.drivers))
for i, d := range ngi.drivers {
if d.err != nil || d.di.Err != nil || d.di.Driver == nil || d.info == nil {
continue
}
if d.info.Status != driver.Running {
toBoot = append(toBoot, i)
}
}
if len(toBoot) == 0 {
return false, nil
}
printer := progress.NewPrinter(context.TODO(), os.Stderr, "auto")
eg, _ := errgroup.WithContext(ctx)
for _, idx := range toBoot {
func(idx int) {
eg.Go(func() error {
pw := progress.WithPrefix(printer, ngi.ng.Nodes[idx].Name, len(toBoot) > 1)
_, err := driver.Boot(ctx, ngi.drivers[idx].di.Driver, pw)
if err != nil {
ngi.drivers[idx].err = err
}
return nil
})
}(idx)
}
err := eg.Wait()
err1 := printer.Wait()
if err == nil {
err = err1
}
return true, err
}