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machines_releasecommand.go
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machines_releasecommand.go
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package deploy
import (
"context"
"errors"
"fmt"
"net/http"
"strconv"
"time"
"github.com/samber/lo"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/flaps"
"github.com/superfly/flyctl/helpers"
"github.com/superfly/flyctl/internal/machine"
)
func (md *machineDeployment) runReleaseCommand(ctx context.Context) error {
if md.appConfig.Deploy == nil || md.appConfig.Deploy.ReleaseCommand == "" {
return nil
}
fmt.Fprintf(md.io.ErrOut, "Running %s release_command: %s\n",
md.colorize.Bold(md.app.Name),
md.appConfig.Deploy.ReleaseCommand,
)
err := md.createOrUpdateReleaseCmdMachine(ctx)
if err != nil {
return fmt.Errorf("error running release_command machine: %w", err)
}
releaseCmdMachine := md.releaseCommandMachine.GetMachines()[0]
// FIXME: consolidate this wait stuff with deploy waits? Especially once we improve the outpu
err = md.waitForReleaseCommandToFinish(ctx, releaseCmdMachine)
if err != nil {
return err
}
lastExitEvent, err := releaseCmdMachine.WaitForEventTypeAfterType(ctx, "exit", "start", md.waitTimeout)
if err != nil {
return fmt.Errorf("error finding the release_command machine %s exit event: %w", releaseCmdMachine.Machine().ID, err)
}
exitCode, err := lastExitEvent.Request.GetExitCode()
if err != nil {
return fmt.Errorf("error get release_command machine %s exit code: %w", releaseCmdMachine.Machine().ID, err)
}
if exitCode != 0 {
time.Sleep(2 * time.Second) // Wait 2 secs to be sure logs have reached OpenSearch
fmt.Fprintf(md.io.ErrOut, "Error release_command failed running on machine %s with exit code %s.\n",
md.colorize.Bold(releaseCmdMachine.Machine().ID), md.colorize.Red(strconv.Itoa(exitCode)))
fmt.Fprintf(md.io.ErrOut, "Check its logs: here's the last 100 lines below, or run 'fly logs -i %s':\n",
releaseCmdMachine.Machine().ID)
releaseCmdLogs, _, err := md.apiClient.GetAppLogs(ctx, md.app.Name, "", md.appConfig.PrimaryRegion, releaseCmdMachine.Machine().ID)
if err != nil {
return fmt.Errorf("error getting release_command logs: %w", err)
}
for _, l := range releaseCmdLogs {
fmt.Fprintf(md.io.ErrOut, " %s\n", l.Message)
}
return fmt.Errorf("error release_command machine %s exited with non-zero status of %d", releaseCmdMachine.Machine().ID, exitCode)
}
md.logClearLinesAbove(1)
fmt.Fprintf(md.io.ErrOut, " release_command %s completed successfully\n", md.colorize.Bold(releaseCmdMachine.Machine().ID))
return nil
}
func (md *machineDeployment) createOrUpdateReleaseCmdMachine(ctx context.Context) error {
if md.releaseCommandMachine.IsEmpty() {
return md.createReleaseCommandMachine(ctx)
}
return md.updateReleaseCommandMachine(ctx)
}
func (md *machineDeployment) createReleaseCommandMachine(ctx context.Context) error {
launchInput := md.launchInputForReleaseCommand(nil)
releaseCmdMachine, err := md.flapsClient.Launch(ctx, *launchInput)
if err != nil {
return fmt.Errorf("error creating a release_command machine: %w", err)
}
fmt.Fprintf(md.io.ErrOut, " Created release_command machine %s\n", md.colorize.Bold(releaseCmdMachine.ID))
md.releaseCommandMachine = machine.NewMachineSet(md.flapsClient, md.io, []*api.Machine{releaseCmdMachine})
return nil
}
func (md *machineDeployment) updateReleaseCommandMachine(ctx context.Context) error {
releaseCmdMachine := md.releaseCommandMachine.GetMachines()[0]
fmt.Fprintf(md.io.ErrOut, " Updating release_command machine %s\n", md.colorize.Bold(releaseCmdMachine.Machine().ID))
if err := releaseCmdMachine.WaitForState(ctx, api.MachineStateStopped, md.waitTimeout, ""); err != nil {
return err
}
if err := md.releaseCommandMachine.AcquireLeases(ctx, md.leaseTimeout); err != nil {
return err
}
defer md.releaseCommandMachine.ReleaseLeases(ctx) // skipcq: GO-S2307
md.releaseCommandMachine.StartBackgroundLeaseRefresh(ctx, md.leaseTimeout, md.leaseDelayBetween)
launchInput := md.launchInputForReleaseCommand(releaseCmdMachine.Machine())
if err := releaseCmdMachine.Update(ctx, *launchInput); err != nil {
return fmt.Errorf("error updating release_command machine: %w", err)
}
return nil
}
func (md *machineDeployment) launchInputForReleaseCommand(origMachineRaw *api.Machine) *api.LaunchMachineInput {
if origMachineRaw == nil {
origMachineRaw = &api.Machine{
Region: md.appConfig.PrimaryRegion,
}
}
// We can ignore the error because ToReleaseMachineConfig fails only
// if it can't split the command and we test that at initialization
mConfig, _ := md.appConfig.ToReleaseMachineConfig()
mConfig.Guest = md.inferReleaseCommandGuest()
mConfig.Image = md.img
md.setMachineReleaseData(mConfig)
return &api.LaunchMachineInput{
Config: mConfig,
Region: origMachineRaw.Region,
}
}
func (md *machineDeployment) inferReleaseCommandGuest() *api.MachineGuest {
defaultGuest := api.MachinePresets[DefaultVMSize]
desiredGuest := api.MachinePresets["shared-cpu-2x"]
if mg := md.machineGuest; mg != nil && (mg.CPUKind != defaultGuest.CPUKind || mg.CPUs != defaultGuest.CPUs || mg.MemoryMB != defaultGuest.MemoryMB) {
desiredGuest = mg
}
if !md.machineSet.IsEmpty() {
group := md.appConfig.DefaultProcessName()
ram := func(m *api.Machine) int {
if m != nil && m.Config != nil && m.Config.Guest != nil {
return m.Config.Guest.MemoryMB
}
return 0
}
maxRamMach := lo.Reduce(md.machineSet.GetMachines(), func(prevBest *api.Machine, lm machine.LeasableMachine, _ int) *api.Machine {
mach := lm.Machine()
if mach.ProcessGroup() != group {
return prevBest
}
return lo.Ternary(ram(mach) > ram(prevBest), mach, prevBest)
}, nil)
if maxRamMach != nil {
desiredGuest = maxRamMach.Config.Guest
}
}
return helpers.Clone(desiredGuest)
}
func (md *machineDeployment) waitForReleaseCommandToFinish(ctx context.Context, releaseCmdMachine machine.LeasableMachine) error {
err := releaseCmdMachine.WaitForState(ctx, api.MachineStateStarted, md.waitTimeout, "")
if err != nil {
var flapsErr *flaps.FlapsError
if errors.As(err, &flapsErr) && flapsErr.ResponseStatusCode == http.StatusNotFound {
// The machine exited and was destroyed quickly.
return nil
}
return fmt.Errorf("error waiting for release_command machine %s to start: %w", releaseCmdMachine.Machine().ID, err)
}
err = releaseCmdMachine.WaitForState(ctx, api.MachineStateDestroyed, md.waitTimeout, "")
if err != nil {
return fmt.Errorf("error waiting for release_command machine %s to finish running: %w", releaseCmdMachine.Machine().ID, err)
}
return nil
}