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update.go
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update.go
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package airgap
import (
"bufio"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"github.com/blang/semver"
"github.com/pkg/errors"
downstreamtypes "github.com/replicatedhq/kots/pkg/api/downstream/types"
apptypes "github.com/replicatedhq/kots/pkg/app/types"
"github.com/replicatedhq/kots/pkg/cursor"
identity "github.com/replicatedhq/kots/pkg/kotsadmidentity"
"github.com/replicatedhq/kots/pkg/kotsutil"
"github.com/replicatedhq/kots/pkg/logger"
"github.com/replicatedhq/kots/pkg/preflight"
"github.com/replicatedhq/kots/pkg/pull"
"github.com/replicatedhq/kots/pkg/render"
"github.com/replicatedhq/kots/pkg/store"
storetypes "github.com/replicatedhq/kots/pkg/store/types"
"github.com/replicatedhq/kots/pkg/tasks"
"github.com/replicatedhq/kots/pkg/util"
"github.com/replicatedhq/kots/pkg/version"
kotsv1beta1 "github.com/replicatedhq/kotskinds/apis/kots/v1beta1"
)
func UpdateAppFromAirgap(a *apptypes.App, airgapBundlePath string, deploy bool, skipPreflights bool, skipCompatibilityCheck bool) (finalError error) {
finishedChan := make(chan error)
defer close(finishedChan)
tasks.StartUpdateTaskMonitor("update-download", finishedChan)
defer func() {
finishedChan <- finalError
}()
if err := store.GetStore().SetTaskStatus("update-download", "Extracting files...", "running"); err != nil {
return errors.Wrap(err, "failed to set task status")
}
airgapRoot, err := extractAppMetaFromAirgapBundle(airgapBundlePath)
if err != nil {
return errors.Wrap(err, "failed to extract archive")
}
defer os.RemoveAll(airgapRoot)
err = UpdateAppFromPath(a, airgapRoot, airgapBundlePath, deploy, skipPreflights, skipCompatibilityCheck)
if err != nil {
return errors.Wrap(err, "failed to update app")
}
return nil
}
func UpdateAppFromPath(a *apptypes.App, airgapRoot string, airgapBundlePath string, deploy bool, skipPreflights bool, skipCompatibilityCheck bool) error {
if err := store.GetStore().SetTaskStatus("update-download", "Processing package...", "running"); err != nil {
return errors.Wrap(err, "failed to set tasks status")
}
registrySettings, err := store.GetStore().GetRegistryDetailsForApp(a.ID)
if err != nil {
return errors.Wrap(err, "failed to get app registry settings")
}
airgap, err := kotsutil.FindAirgapMetaInDir(airgapRoot)
if err != nil {
return errors.Wrap(err, "failed to find airgap meta")
}
missingPrereqs, err := GetMissingRequiredVersions(a, airgap)
if err != nil {
return errors.Wrapf(err, "failed to check required versions")
}
if len(missingPrereqs) > 0 {
return util.ActionableError{
NoRetry: true,
Message: fmt.Sprintf("This airgap bundle cannot be uploaded because versions %s are required and must be uploaded first.", strings.Join(missingPrereqs, ", ")),
}
}
archiveDir, baseSequence, err := store.GetStore().GetAppVersionBaseArchive(a.ID, airgap.Spec.VersionLabel)
if err != nil {
return errors.Wrapf(err, "failed to get base archive dir for version %s", airgap.Spec.VersionLabel)
}
defer os.RemoveAll(archiveDir)
beforeKotsKinds, err := kotsutil.LoadKotsKindsFromPath(filepath.Join(archiveDir, "upstream"))
if err != nil {
return errors.Wrap(err, "failed to load current kotskinds")
}
if beforeKotsKinds.License == nil {
err := errors.New("no license found in application")
return err
}
if err := store.GetStore().SetTaskStatus("update-download", "Processing app package...", "running"); err != nil {
return errors.Wrap(err, "failed to set task status")
}
appNamespace := util.AppNamespace()
downstreams, err := store.GetStore().ListDownstreamsForApp(a.ID)
if err != nil {
return errors.Wrap(err, "failed to list downstreams for app")
}
downstreamNames := []string{}
for _, d := range downstreams {
downstreamNames = append(downstreamNames, d.Name)
}
if err := store.GetStore().SetTaskStatus("update-download", "Creating app version...", "running"); err != nil {
return errors.Wrap(err, "failed to set task status")
}
appSequence, err := store.GetStore().GetNextAppSequence(a.ID)
if err != nil {
return errors.Wrap(err, "failed to get new app sequence")
}
pipeReader, pipeWriter := io.Pipe()
go func() {
scanner := bufio.NewScanner(pipeReader)
for scanner.Scan() {
if err := store.GetStore().SetTaskStatus("update-download", scanner.Text(), "running"); err != nil {
logger.Error(errors.Wrap(err, "failed to update download status"))
}
}
pipeReader.CloseWithError(scanner.Err())
}()
// Using license from db instead of upstream bundle because the one in db has not been re-marshalled
license, err := kotsutil.LoadLicenseFromBytes([]byte(a.License))
if err != nil {
return errors.Wrap(err, "failed parse license")
}
identityConfigFile := filepath.Join(archiveDir, "upstream", "userdata", "identityconfig.yaml")
if _, err := os.Stat(identityConfigFile); os.IsNotExist(err) {
file, err := identity.InitAppIdentityConfig(a.Slug)
if err != nil {
return errors.Wrap(err, "failed to init identity config")
}
identityConfigFile = file
defer os.Remove(identityConfigFile)
} else if err != nil {
return errors.Wrap(err, "failed to get stat identity config file")
}
if err := pull.CleanBaseArchive(archiveDir); err != nil {
return errors.Wrap(err, "failed to clean base archive")
}
pullOptions := pull.PullOptions{
Downstreams: downstreamNames,
LicenseObj: license,
Namespace: appNamespace,
ConfigFile: filepath.Join(archiveDir, "upstream", "userdata", "config.yaml"),
IdentityConfigFile: identityConfigFile,
AirgapRoot: airgapRoot,
AirgapBundle: airgapBundlePath,
InstallationFile: filepath.Join(archiveDir, "upstream", "userdata", "installation.yaml"),
UpdateCursor: beforeKotsKinds.Installation.Spec.UpdateCursor,
RootDir: archiveDir,
ExcludeKotsKinds: true,
ExcludeAdminConsole: true,
CreateAppDir: false,
ReportWriter: pipeWriter,
Silent: true,
RewriteImages: true,
RewriteImageOptions: registrySettings,
AppID: a.ID,
AppSlug: a.Slug,
AppSequence: appSequence,
SkipCompatibilityCheck: skipCompatibilityCheck,
}
if _, err := pull.Pull(fmt.Sprintf("replicated://%s", beforeKotsKinds.License.Spec.AppSlug), pullOptions); err != nil {
if errors.Cause(err) != pull.ErrConfigNeeded {
return errors.Wrap(err, "failed to pull")
}
}
afterKotsKinds, err := kotsutil.LoadKotsKindsFromPath(filepath.Join(archiveDir, "upstream"))
if err != nil {
return errors.Wrap(err, "failed to read after kotskinds")
}
if err := canInstall(beforeKotsKinds, afterKotsKinds); err != nil {
return errors.Wrap(err, "cannot install")
}
// Create the app in the db
newSequence, err := store.GetStore().CreateAppVersion(a.ID, &baseSequence, archiveDir, "Airgap Update", skipPreflights, &version.DownstreamGitOps{}, render.Renderer{})
if err != nil {
return errors.Wrap(err, "failed to create new version")
}
hasStrictPreflights, err := store.GetStore().HasStrictPreflights(a.ID, newSequence)
if err != nil {
return errors.Wrap(err, "failed to check if app preflight has strict analyzers")
}
if hasStrictPreflights && skipPreflights {
logger.Warnf("preflights will not be skipped, strict preflights are set to %t", hasStrictPreflights)
}
if !skipPreflights || hasStrictPreflights {
if err := preflight.Run(a.ID, a.Slug, newSequence, true, archiveDir); err != nil {
return errors.Wrap(err, "failed to start preflights")
}
}
if deploy {
downstreams, err := store.GetStore().ListDownstreamsForApp(a.ID)
if err != nil {
return errors.Wrap(err, "failed to fetch downstreams")
}
if len(downstreams) == 0 {
return errors.Errorf("no downstreams found for app %q", a.Slug)
}
downstream := downstreams[0]
status, err := store.GetStore().GetStatusForVersion(a.ID, downstream.ClusterID, newSequence)
if err != nil {
return errors.Wrapf(err, "failed to get status for version %d", newSequence)
}
if status == storetypes.VersionPendingConfig {
return errors.Errorf("not deploying version %d because it's %s", newSequence, status)
}
if err := version.DeployVersion(a.ID, newSequence); err != nil {
return errors.Wrap(err, "failed to deploy app version")
}
}
return nil
}
func canInstall(beforeKotsKinds *kotsutil.KotsKinds, afterKotsKinds *kotsutil.KotsKinds) error {
var beforeSemver, afterSemver *semver.Version
if v, err := semver.ParseTolerant(beforeKotsKinds.Installation.Spec.VersionLabel); err == nil {
beforeSemver = &v
}
if v, err := semver.ParseTolerant(afterKotsKinds.Installation.Spec.VersionLabel); err == nil {
afterSemver = &v
}
isSameVersion := false
if beforeSemver != nil && afterSemver != nil {
// Allow uploading older versions if both have semvers because they can be sorted correctly.
if beforeSemver.EQ(*afterSemver) {
isSameVersion = true
}
} else if beforeSemver != nil {
// TODO: pass or fail?
} else if afterSemver != nil {
// TODO: pass or fail?
} else {
bc, err := cursor.NewCursor(beforeKotsKinds.Installation.Spec.UpdateCursor)
if err != nil {
return errors.Wrap(err, "failed to create bc")
}
ac, err := cursor.NewCursor(afterKotsKinds.Installation.Spec.UpdateCursor)
if err != nil {
return errors.Wrap(err, "failed to create ac")
}
if !bc.Comparable(ac) {
return errors.Errorf("cannot compare %q and %q", beforeKotsKinds.Installation.Spec.UpdateCursor, afterKotsKinds.Installation.Spec.UpdateCursor)
}
installChannelID := beforeKotsKinds.Installation.Spec.ChannelID
licenseChannelID := beforeKotsKinds.License.Spec.ChannelID
installChannelName := beforeKotsKinds.Installation.Spec.ChannelName
licenseChannelName := beforeKotsKinds.License.Spec.ChannelName
if (installChannelID != "" && licenseChannelID != "" && installChannelID == licenseChannelID) || (installChannelName == licenseChannelName) {
if bc.Equal(ac) {
isSameVersion = true
}
}
}
if isSameVersion {
return util.ActionableError{
NoRetry: true,
Message: fmt.Sprintf("Version %s (%s) cannot be installed again because it is already the current version", afterKotsKinds.Installation.Spec.VersionLabel, afterKotsKinds.Installation.Spec.UpdateCursor),
}
}
return nil
}
func GetMissingRequiredVersions(app *apptypes.App, airgap *kotsv1beta1.Airgap) ([]string, error) {
appVersions, err := store.GetStore().FindDownstreamVersions(app.ID, true)
if err != nil {
return nil, errors.Wrap(err, "failed to get downstream versions")
}
license, err := kotsutil.LoadLicenseFromBytes([]byte(app.License))
if err != nil {
return nil, errors.Wrap(err, "failed to load license")
}
return getMissingRequiredVersions(airgap, license, appVersions.AllVersions)
}
func getMissingRequiredVersions(airgap *kotsv1beta1.Airgap, license *kotsv1beta1.License, installedVersions []*downstreamtypes.DownstreamVersion) ([]string, error) {
missingVersions := make([]string, 0)
if len(installedVersions) == 0 {
return missingVersions, nil
}
for _, requiredRelease := range airgap.Spec.RequiredReleases {
laterReleaseInstalled := false
for _, appVersion := range installedVersions {
requiredSemver, requiredSemverErr := semver.ParseTolerant(requiredRelease.VersionLabel)
// semvers can be compared across channels
// if a semmver is missing, fallback to comparing the cursor but only if channel is the same
if license.Spec.IsSemverRequired && appVersion.Semver != nil && requiredSemverErr == nil {
if requiredSemver.LE(*appVersion.Semver) {
laterReleaseInstalled = true
break
}
} else {
// cursors can only be compared on the same channel
if appVersion.ChannelID != airgap.Spec.ChannelID {
continue
}
if appVersion.Cursor == nil {
return nil, errors.Errorf("cursor required but version %s does not have cursor", appVersion.UpdateCursor)
}
requiredCursor, err := cursor.NewCursor(requiredRelease.UpdateCursor)
if err != nil {
return nil, errors.Wrapf(err, "failed to parse required update cursor %q", requiredRelease.UpdateCursor)
}
if requiredCursor.Before(*appVersion.Cursor) || requiredCursor.Equal(*appVersion.Cursor) {
laterReleaseInstalled = true
break
}
}
}
if !laterReleaseInstalled {
missingVersions = append([]string{requiredRelease.VersionLabel}, missingVersions...)
} else {
break
}
}
return missingVersions, nil
}