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online.go
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online.go
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package online
import (
"bufio"
"context"
"database/sql"
"io"
"io/ioutil"
"os"
"time"
"github.com/pkg/errors"
kotsadmconfig "github.com/replicatedhq/kots/kotsadm/pkg/config"
"github.com/replicatedhq/kots/kotsadm/pkg/downstream"
"github.com/replicatedhq/kots/kotsadm/pkg/kotsutil"
"github.com/replicatedhq/kots/kotsadm/pkg/logger"
"github.com/replicatedhq/kots/kotsadm/pkg/persistence"
"github.com/replicatedhq/kots/kotsadm/pkg/preflight"
"github.com/replicatedhq/kots/kotsadm/pkg/task"
"github.com/replicatedhq/kots/kotsadm/pkg/updatechecker"
"github.com/replicatedhq/kots/kotsadm/pkg/version"
"github.com/replicatedhq/kots/pkg/pull"
"go.uber.org/zap"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"sigs.k8s.io/controller-runtime/pkg/client/config"
)
type PendingApp struct {
ID string
Slug string
Name string
LicenseData string
}
type InstallStatus struct {
InstallStatus string `json:"installStatus"`
CurrentMessage string `json:"currentMessage"`
}
func GetInstallStatus() (*InstallStatus, error) {
db := persistence.MustGetPGSession()
query := `SELECT install_state from app ORDER BY created_at DESC LIMIT 1`
row := db.QueryRow(query)
var installState sql.NullString
if err := row.Scan(&installState); err != nil {
return nil, errors.Wrap(err, "failed to scan")
}
_, message, err := task.GetTaskStatus("online-install")
if err != nil {
return nil, errors.Wrap(err, "failed to get task status")
}
status := &InstallStatus{
InstallStatus: installState.String,
CurrentMessage: message,
}
return status, nil
}
func CreateAppFromOnline(pendingApp *PendingApp, upstreamURI string, isAutomated bool) (_ *kotsutil.KotsKinds, finalError error) {
logger.Debug("creating app from online",
zap.String("upstreamURI", upstreamURI))
if err := task.SetTaskStatus("online-install", "Uploading license...", "running"); err != nil {
return nil, errors.Wrap(err, "failed to set task status")
}
finishedCh := make(chan struct{})
defer close(finishedCh)
go func() {
for {
select {
case <-time.After(time.Second):
if err := task.UpdateTaskStatusTimestamp("online-install"); err != nil {
logger.Error(err)
}
case <-finishedCh:
return
}
}
}()
defer func() {
if finalError == nil {
if err := task.ClearTaskStatus("online-install"); err != nil {
logger.Error(errors.Wrap(err, "failed to clear install task status"))
}
if err := setAppInstallState(pendingApp.ID, "installed"); err != nil {
logger.Error(errors.Wrap(err, "failed to set app status to installed"))
}
if err := updatechecker.Configure(pendingApp.ID); err != nil {
logger.Error(errors.Wrap(err, "failed to configure update checker"))
}
} else {
if err := task.SetTaskStatus("online-install", finalError.Error(), "failed"); err != nil {
logger.Error(errors.Wrap(err, "failed to set error on install task status"))
}
if err := setAppInstallState(pendingApp.ID, "install_error"); err != nil {
logger.Error(errors.Wrap(err, "failed to set app status to error"))
}
}
}()
db := persistence.MustGetPGSession()
pipeReader, pipeWriter := io.Pipe()
go func() {
scanner := bufio.NewScanner(pipeReader)
for scanner.Scan() {
if err := task.SetTaskStatus("online-install", scanner.Text(), "running"); err != nil {
logger.Error(err)
}
}
pipeReader.CloseWithError(scanner.Err())
}()
// put the license in a temp file
licenseFile, err := ioutil.TempFile("", "kotsadm")
if err != nil {
return nil, errors.Wrap(err, "failed to create tmp file for license")
}
defer os.RemoveAll(licenseFile.Name())
if err := ioutil.WriteFile(licenseFile.Name(), []byte(pendingApp.LicenseData), 0644); err != nil {
return nil, errors.Wrap(err, "failed to write license tmp file")
}
// pull to a tmp dir
tmpRoot, err := ioutil.TempDir("", "kots")
if err != nil {
return nil, errors.Wrap(err, "failed to create tmp dir for pull")
}
defer os.RemoveAll(tmpRoot)
appNamespace := os.Getenv("POD_NAMESPACE")
if os.Getenv("KOTSADM_TARGET_NAMESPACE") != "" {
appNamespace = os.Getenv("KOTSADM_TARGET_NAMESPACE")
}
configValues, err := readConfigValuesFromInClusterSecret()
if err != nil {
return nil, errors.Wrap(err, "failed to read config values from in cluster")
}
configFile := ""
if configValues != "" {
tmpFile, err := ioutil.TempFile("", "kots")
if err != nil {
return nil, errors.Wrap(err, "failed to create temp file for config values")
}
defer os.RemoveAll(tmpFile.Name())
if err := ioutil.WriteFile(tmpFile.Name(), []byte(configValues), 0644); err != nil {
return nil, errors.Wrap(err, "failed to write config values to temp file")
}
configFile = tmpFile.Name()
}
// kots install --config-values (and other documented automation workflows) support
// a writing a config values file as a secret...
// if this secret exists, we automatically (blindly) use it as the config values
// for the application, and then delete it.
pullOptions := pull.PullOptions{
Downstreams: []string{"this-cluster"},
LicenseFile: licenseFile.Name(),
Namespace: appNamespace,
ExcludeKotsKinds: true,
RootDir: tmpRoot,
ExcludeAdminConsole: true,
CreateAppDir: false,
ConfigFile: configFile,
ReportWriter: pipeWriter,
AppSlug: pendingApp.Slug,
AppSequence: 0,
}
if _, err := pull.Pull(upstreamURI, pullOptions); err != nil {
return nil, errors.Wrap(err, "failed to pull")
}
// Create the downstream
// copying this from typescript ...
// i'll leave this next line
// TODO: refactor this entire function to be testable, reliable and less monolithic
query := `select id, title from cluster`
rows, err := db.Query(query)
if err != nil {
return nil, errors.Wrap(err, "failed to query clusters")
}
defer rows.Close()
clusterIDs := map[string]string{}
for rows.Next() {
clusterID := ""
name := ""
if err := rows.Scan(&clusterID, &name); err != nil {
return nil, errors.Wrap(err, "failed to scan row")
}
clusterIDs[clusterID] = name
}
for clusterID, name := range clusterIDs {
query = `insert into app_downstream (app_id, cluster_id, downstream_name) values ($1, $2, $3)`
_, err = db.Exec(query, pendingApp.ID, clusterID, name)
if err != nil {
return nil, errors.Wrap(err, "failed to create app downstream")
}
}
query = `update app set is_airgap=false where id = $1`
_, err = db.Exec(query, pendingApp.ID)
if err != nil {
return nil, errors.Wrap(err, "failed to update app to installed")
}
newSequence, err := version.CreateFirstVersion(pendingApp.ID, tmpRoot, "Online Install")
if err != nil {
return nil, errors.Wrap(err, "failed to create new version")
}
kotsKinds, err := kotsutil.LoadKotsKindsFromPath(tmpRoot)
if err != nil {
return nil, errors.Wrap(err, "failed to load kotskinds from path")
}
if isAutomated && kotsKinds.Config != nil {
// bypass the config screen if no configuration is required
licenseSpec, err := kotsKinds.Marshal("kots.io", "v1beta1", "License")
if err != nil {
return nil, errors.Wrap(err, "failed to marshal license spec")
}
configSpec, err := kotsKinds.Marshal("kots.io", "v1beta1", "Config")
if err != nil {
return nil, errors.Wrap(err, "failed to marshal config spec")
}
configValuesSpec, err := kotsKinds.Marshal("kots.io", "v1beta1", "ConfigValues")
if err != nil {
return nil, errors.Wrap(err, "failed to marshal configvalues spec")
}
needsConfig, err := kotsadmconfig.NeedsConfiguration(configSpec, configValuesSpec, licenseSpec)
if err != nil {
return nil, errors.Wrap(err, "failed to check if app needs configuration")
}
if !needsConfig {
err := downstream.SetDownstreamVersionPendingPreflight(pendingApp.ID, newSequence)
if err != nil {
return nil, errors.Wrap(err, "failed to set downstream version status to 'pending preflight'")
}
}
}
if err := preflight.Run(pendingApp.ID, newSequence, tmpRoot); err != nil {
return nil, errors.Wrap(err, "failed to start preflights")
}
return kotsKinds, nil
}
func setAppInstallState(appID string, status string) error {
db := persistence.MustGetPGSession()
query := `update app set install_state = $2 where id = $1`
_, err := db.Exec(query, appID, status)
if err != nil {
return errors.Wrap(err, "failed to update app install state")
}
return nil
}
func readConfigValuesFromInClusterSecret() (string, error) {
cfg, err := config.GetConfig()
if err != nil {
return "", errors.Wrap(err, "failed to get cluster config")
}
clientset, err := kubernetes.NewForConfig(cfg)
if err != nil {
return "", errors.Wrap(err, "failed to create clientset")
}
configValuesSecrets, err := clientset.CoreV1().Secrets(os.Getenv("POD_NAMESPACE")).List(context.TODO(), metav1.ListOptions{
LabelSelector: "kots.io/automation=configvalues",
})
if err != nil {
return "", errors.Wrap(err, "failed to list configvalues secrets")
}
// just get the first
for _, configValuesSecret := range configValuesSecrets.Items {
configValues, ok := configValuesSecret.Data["configvalues"]
if !ok {
logger.Errorf("config values secret %q does not contain config values key", configValuesSecret.Name)
continue
}
// delete it, these are one time use secrets
err = clientset.CoreV1().Secrets(configValuesSecret.Namespace).Delete(context.TODO(), configValuesSecret.Name, metav1.DeleteOptions{})
if err != nil {
logger.Errorf("error deleting config values secret: %v", err)
}
return string(configValues), nil
}
return "", nil
}