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show.go
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show.go
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package image
import (
"context"
"encoding/json"
"fmt"
"strings"
"github.com/spf13/cobra"
fly "github.com/superfly/fly-go"
"github.com/superfly/fly-go/flaps"
"github.com/superfly/flyctl/internal/appconfig"
"github.com/superfly/flyctl/internal/command"
"github.com/superfly/flyctl/internal/config"
"github.com/superfly/flyctl/internal/flag"
"github.com/superfly/flyctl/internal/flapsutil"
"github.com/superfly/flyctl/internal/render"
"github.com/superfly/flyctl/iostreams"
)
func newShow() *cobra.Command {
const (
short = "Show image details."
long = short + "\n"
usage = "show"
)
cmd := command.New(usage, short, long, runShow,
command.RequireSession,
command.RequireAppName,
)
cmd.Args = cobra.MaximumNArgs(1)
flag.Add(cmd,
flag.App(),
flag.AppConfig(),
flag.JSONOutput(),
)
return cmd
}
func runShow(ctx context.Context) error {
var (
client = fly.ClientFromContext(ctx)
appName = appconfig.NameFromContext(ctx)
)
app, err := client.GetAppCompact(ctx, appName)
if err != nil {
return fmt.Errorf("get app: %w", err)
}
return showMachineImage(ctx, app)
}
func showMachineImage(ctx context.Context, app *fly.AppCompact) error {
var (
io = iostreams.FromContext(ctx)
colorize = io.ColorScheme()
client = fly.ClientFromContext(ctx)
cfg = config.FromContext(ctx)
)
flaps, err := flapsutil.NewClientWithOptions(ctx, flaps.NewClientOpts{
AppCompact: app,
AppName: app.Name,
})
if err != nil {
return err
}
// if we have machine_id as an arg, we want to show the image for that machine only
if len(flag.Args(ctx)) > 0 {
machine, err := flaps.Get(ctx, flag.FirstArg(ctx))
if err != nil {
return fmt.Errorf("failed to get machine: %w", err)
}
version := "N/A"
if machine.ImageVersion() != "" {
version = machine.ImageVersion()
}
var labelsString string
if cfg.JSONOutput {
json, err := json.Marshal(machine.ImageRef.Labels)
if err != nil {
return err
}
if string(json) != "null" {
labelsString = string(json)
}
} else {
for key, val := range machine.ImageRef.Labels {
labelsString += fmt.Sprintf("%s=%s", key, val)
}
}
obj := map[string]string{
"MachineID": machine.ID,
"Registry": machine.ImageRef.Registry,
"Repository": machine.ImageRef.Repository,
"Tag": machine.ImageRef.Tag,
"Version": version,
"Digest": machine.ImageRef.Digest,
"Labels": labelsString,
}
rows := [][]string{
{
machine.ImageRef.Registry,
machine.ImageRef.Repository,
machine.ImageRef.Tag,
version,
machine.ImageRef.Digest,
labelsString,
},
}
if cfg.JSONOutput {
return render.JSON(io.Out, obj)
}
return render.VerticalTable(io.Out, "Image Details", rows,
"Registry",
"Repository",
"Tag",
"Version",
"Digest",
"Labels",
)
}
// get machines
machines, err := flaps.List(ctx, "")
if err != nil {
return fmt.Errorf("failed to get machines: %w", err)
}
// Tracks latest eligible version
var latest *fly.ImageVersion
var updatable []*fly.Machine
for _, machine := range machines {
image := fmt.Sprintf("%s:%s", machine.ImageRef.Repository, machine.ImageRef.Tag)
latestImage, err := client.GetLatestImageDetails(ctx, image)
if err != nil && strings.Contains(err.Error(), "Unknown repository") {
continue
}
if err != nil {
return fmt.Errorf("unable to fetch latest image details for %s: %w", image, err)
}
if latest == nil {
latest = latestImage
}
if app.IsPostgresApp() {
// Abort if we detect a postgres machine running a different major version.
if latest.Tag != latestImage.Tag {
return fmt.Errorf("major version mismatch detected")
}
}
// Exclude machines that are already running the latest version
if machine.ImageRef.Digest == latest.Digest {
continue
}
updatable = append(updatable, machine)
}
if len(updatable) > 0 {
msgs := []string{"Updates available:\n\n"}
for _, machine := range updatable {
latestStr := fmt.Sprintf("%s:%s (%s)", latest.Repository, latest.Tag, latest.Version)
msg := fmt.Sprintf("Machine %q %s -> %s\n", machine.ID, machine.ImageRefWithVersion(), latestStr)
msgs = append(msgs, msg)
}
fmt.Fprintln(io.ErrOut, colorize.Yellow(strings.Join(msgs, "")))
fmt.Fprintln(io.ErrOut, colorize.Yellow("Run `flyctl image update` to migrate to the latest image version."))
}
var rows [][]string
var objs []map[string]string
for _, machine := range machines {
image := machine.ImageRef
version := "N/A"
if machine.ImageVersion() != "" {
version = machine.ImageVersion()
}
var labelsString string
if cfg.JSONOutput {
json, err := json.Marshal(image.Labels)
if err != nil {
return err
}
if string(json) != "null" {
labelsString = string(json)
}
} else {
for key, val := range image.Labels {
labelsString += fmt.Sprintf("%s=%s", key, val)
}
}
objs = append(objs, map[string]string{
"MachineID": machine.ID,
"Registry": image.Registry,
"Repository": image.Repository,
"Tag": image.Tag,
"Version": version,
"Digest": image.Digest,
"Labels": labelsString,
})
rows = append(rows, []string{
machine.ID,
image.Registry,
image.Repository,
image.Tag,
version,
image.Digest,
labelsString,
})
}
if cfg.JSONOutput {
return render.JSON(io.Out, objs)
}
return render.Table(
io.Out,
"Image Details",
rows,
"Machine ID",
"Registry",
"Repository",
"Tag",
"Version",
"Digest",
"Labels",
)
}