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restart.go
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restart.go
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package apps
import (
"context"
"errors"
"fmt"
"github.com/spf13/cobra"
"github.com/superfly/flyctl/flaps"
"github.com/superfly/flyctl/internal/flag/completion"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/client"
"github.com/superfly/flyctl/internal/appconfig"
"github.com/superfly/flyctl/internal/command"
"github.com/superfly/flyctl/internal/flag"
"github.com/superfly/flyctl/internal/machine"
"github.com/superfly/flyctl/iostreams"
)
func newRestart() *cobra.Command {
const (
long = `The APPS RESTART command will perform a rolling restart against all running VMs`
short = "Restart an application"
usage = "restart [APPNAME]"
)
cmd := command.New(usage, short, long, runRestart,
command.RequireSession,
command.LoadAppNameIfPresentNoFlag,
)
cmd.Args = cobra.MaximumNArgs(1)
// Note -
flag.Add(cmd,
flag.Bool{
Name: "force-stop",
Description: "Performs a force stop against the target Machine. ( Machines only )",
Default: false,
},
flag.Bool{
Name: "skip-health-checks",
Description: "Restarts app without waiting for health checks. ( Machines only )",
Default: false,
},
)
cmd.ValidArgsFunction = completion.Adapt(completion.CompleteApps)
return cmd
}
func runRestart(ctx context.Context) error {
var (
appName = flag.FirstArg(ctx)
client = client.FromContext(ctx).API()
)
if appName == "" {
appName = appconfig.NameFromContext(ctx)
if appName == "" {
return errors.New("no app name was provided, and none is available from the environment or fly.toml")
}
}
app, err := client.GetAppCompact(ctx, appName)
if err != nil {
return err
}
if app.IsPostgresApp() {
return fmt.Errorf("postgres apps should use `fly pg restart` instead")
}
ctx, err = BuildContext(ctx, app)
if err != nil {
return err
}
if app.PlatformVersion == "machines" {
return runMachinesRestart(ctx, app)
}
return runNomadRestart(ctx, app)
}
func runNomadRestart(ctx context.Context, app *api.AppCompact) error {
client := client.FromContext(ctx).API()
command.PromptToMigrate(ctx, app)
if _, err := client.RestartApp(ctx, app.Name); err != nil {
return fmt.Errorf("failed restarting app: %w", err)
}
io := iostreams.FromContext(ctx)
fmt.Fprintf(io.Out, "%s is being restarted\n", app.Name)
return nil
}
func runMachinesRestart(ctx context.Context, app *api.AppCompact) error {
input := &api.RestartMachineInput{
ForceStop: flag.GetBool(ctx, "force-stop"),
SkipHealthChecks: flag.GetBool(ctx, "skip-health-checks"),
}
// Rolling restart against exclusively the machines managed by the Apps platform
flapsClient, err := flaps.New(ctx, app)
if err != nil {
return err
}
machines, _, err := flapsClient.ListFlyAppsMachines(ctx)
if err != nil {
return err
}
machines, releaseFunc, err := machine.AcquireLeases(ctx, machines)
defer releaseFunc(ctx, machines)
if err != nil {
return err
}
for _, m := range machines {
if err := machine.Restart(ctx, m, input, m.LeaseNonce); err != nil {
return err
}
}
return nil
}