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main.go
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main.go
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package main
import (
"context"
"flag"
"fmt"
releasepayloadclient "github.com/openshift/release-controller/pkg/client/clientset/versioned"
releasepayloadinformers "github.com/openshift/release-controller/pkg/client/informers/externalversions"
"k8s.io/test-infra/prow/jira"
"net/http"
"os"
goruntime "runtime"
"strconv"
"strings"
"time"
_ "net/http/pprof" // until openshift/library-go#309 merges
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/spf13/cobra"
"gopkg.in/fsnotify.v1"
"k8s.io/klog"
imageclientset "github.com/openshift/client-go/image/clientset/versioned"
imageinformers "github.com/openshift/client-go/image/informers/externalversions"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/dynamic"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/pkg/version"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/clientcmd"
"github.com/openshift/library-go/pkg/serviceability"
releasecontroller "github.com/openshift/release-controller/pkg/release-controller"
"k8s.io/test-infra/prow/flagutil"
"k8s.io/test-infra/prow/interrupts"
"k8s.io/test-infra/prow/pjutil"
)
type options struct {
ReleaseNamespaces []string
JobNamespace string
ProwNamespace string
ProwJobKubeconfig string
NonProwJobKubeconfig string
ReleasesKubeconfig string
ToolsKubeconfig string
ToolsImageStreamTag string
ListenAddr string
ListenPort int
ArtifactsHost string
ReleaseArchitecture string
AuthenticationMessage string
ARTSuffix string
jira flagutil.JiraOptions
enableJira bool
}
func main() {
serviceability.StartProfiler()
defer serviceability.Profile(os.Getenv("OPENSHIFT_PROFILE")).Stop()
// prow registers this on init
interrupts.OnInterrupt(func() { os.Exit(0) })
original := flag.CommandLine
klog.InitFlags(original)
original.Set("alsologtostderr", "true")
original.Set("v", "2")
opt := &options{
ListenAddr: ":8080",
ToolsImageStreamTag: ":tests",
}
cmd := &cobra.Command{
Run: func(cmd *cobra.Command, arguments []string) {
if err := opt.Run(); err != nil {
klog.Exitf("error: %v", err)
}
},
}
flagset := cmd.Flags()
flagset.StringVar(&opt.ToolsImageStreamTag, "tools-image-stream-tag", opt.ToolsImageStreamTag, "An image stream tag pointing to a release stream that contains the oc command and git (usually <master>:tests).")
flagset.StringVar(&opt.ProwJobKubeconfig, "prow-job-kubeconfig", opt.ProwJobKubeconfig, "The kubeconfig to use for interacting with ProwJobs. Defaults in-cluster config if unset.")
flagset.StringVar(&opt.NonProwJobKubeconfig, "non-prow-job-kubeconfig", opt.NonProwJobKubeconfig, "The kubeconfig to use for everything that is not prowjobs (namespaced, pods, batchjobs, ....). Falls back to incluster config if unset")
flagset.StringVar(&opt.ReleasesKubeconfig, "releases-kubeconfig", opt.ReleasesKubeconfig, "The kubeconfig to use for interacting with release imagestreams and jobs. Falls back to non-prow-job-kubeconfig and then incluster config if unset")
flagset.StringVar(&opt.ToolsKubeconfig, "tools-kubeconfig", opt.ToolsKubeconfig, "The kubeconfig to use for running the release-controller tools. Falls back to non-prow-job-kubeconfig and then incluster config if unset")
flagset.StringVar(&opt.JobNamespace, "job-namespace", opt.JobNamespace, "The namespace to execute jobs and hold temporary objects.")
flagset.StringSliceVar(&opt.ReleaseNamespaces, "release-namespace", opt.ReleaseNamespaces, "The namespace where the source image streams are located and where releases will be published to.")
flagset.StringVar(&opt.ProwNamespace, "prow-namespace", opt.ProwNamespace, "The namespace where the Prow jobs will be created (defaults to --job-namespace).")
flagset.AddGoFlagSet(flag.CommandLine)
flagset.StringVar(&opt.ArtifactsHost, "artifacts", opt.ArtifactsHost, "The public hostname of the artifacts server.")
flagset.StringVar(&opt.ListenAddr, "listen", opt.ListenAddr, "UNUSED: The address to serve release information on")
flagset.IntVar(&opt.ListenPort, "port", 8080, "Port to run server on")
flagset.StringVar(&opt.ReleaseArchitecture, "release-architecture", opt.ReleaseArchitecture, "The architecture of the releases to be created (defaults to 'amd64' if not specified).")
flagset.StringVar(&opt.AuthenticationMessage, "authentication-message", opt.AuthenticationMessage, "HTML formatted string to display a registry authentication message")
flagset.StringVar(&opt.ARTSuffix, "art-suffix", "", "Suffix for ART imagstreams (eg. `-art-latest`)")
flagset.AddGoFlag(original.Lookup("v"))
flagset.BoolVar(&opt.enableJira, "enable-jira", opt.enableJira, "Enable Jira issue fetching")
goFlagSet := flag.NewFlagSet("prowflags", flag.ContinueOnError)
opt.jira.AddFlags(goFlagSet)
flagset.AddGoFlagSet(goFlagSet)
if err := setupKubeconfigWatches(opt); err != nil {
klog.Warningf("failed to set up kubeconfig watches: %v", err)
}
if err := cmd.Execute(); err != nil {
klog.Exitf("error: %v", err)
}
}
func (o *options) Run() error {
// report liveness on default prow health port 8081
health := pjutil.NewHealthOnPort(flagutil.DefaultHealthPort)
tagParts := strings.Split(o.ToolsImageStreamTag, ":")
if len(tagParts) != 2 || len(tagParts[1]) == 0 {
return fmt.Errorf("--tools-image-stream-tag must be STREAM:TAG or :TAG (default STREAM is the oldest release stream)")
}
if len(o.ReleaseNamespaces) == 0 {
return fmt.Errorf("no namespace set, use --release-namespace")
}
if len(o.JobNamespace) == 0 {
return fmt.Errorf("no job namespace set, use --job-namespace")
}
if len(o.ProwNamespace) == 0 {
o.ProwNamespace = o.JobNamespace
}
var architecture = "amd64"
if len(o.ReleaseArchitecture) > 0 {
architecture = o.ReleaseArchitecture
}
inClusterCfg, err := loadClusterConfig()
if err != nil {
return fmt.Errorf("failed to load incluster config: %w", err)
}
config, err := o.nonProwJobKubeconfig(inClusterCfg)
if err != nil {
return fmt.Errorf("failed to load config from %s: %w", o.NonProwJobKubeconfig, err)
}
releasesConfig, err := o.releasesKubeconfig(inClusterCfg)
if err != nil {
return fmt.Errorf("failed to load releases config from %s: %w", o.ReleasesKubeconfig, err)
}
toolsConfig, err := o.toolsKubeconfig(inClusterCfg)
if err != nil {
return fmt.Errorf("failed to load tools config from %s: %w", o.ToolsKubeconfig, err)
}
config.UserAgent = fmt.Sprintf("release-controller-api/%s (%s/%s)", version.Get().GitVersion, goruntime.GOOS, goruntime.GOARCH)
releasesConfig.UserAgent = fmt.Sprintf("release-controller-api/%s (%s/%s)", version.Get().GitVersion, goruntime.GOOS, goruntime.GOARCH)
toolsConfig.UserAgent = fmt.Sprintf("release-controller-api/%s (%s/%s)", version.Get().GitVersion, goruntime.GOOS, goruntime.GOARCH)
client, err := clientset.NewForConfig(config)
if err != nil {
return fmt.Errorf("unable to create client: %v", err)
}
releasesClient, err := clientset.NewForConfig(releasesConfig)
if err != nil {
return fmt.Errorf("unable to create releases client: %v", err)
}
toolsClient, err := clientset.NewForConfig(toolsConfig)
if err != nil {
return fmt.Errorf("unable to create tools client: %v", err)
}
releaseNamespace := o.ReleaseNamespaces[0]
for _, ns := range o.ReleaseNamespaces {
if _, err := client.CoreV1().Namespaces().Get(context.TODO(), ns, metav1.GetOptions{}); err != nil {
return fmt.Errorf("unable to find release namespace: %s: %v", ns, err)
}
}
if o.JobNamespace != releaseNamespace {
if _, err := client.CoreV1().Namespaces().Get(context.TODO(), o.JobNamespace, metav1.GetOptions{}); err != nil {
return fmt.Errorf("unable to find job namespace: %v", err)
}
}
imageClient, err := imageclientset.NewForConfig(releasesConfig)
if err != nil {
return fmt.Errorf("unable to create image client: %v", err)
}
prowClient, err := o.prowJobClient(inClusterCfg)
if err != nil {
return fmt.Errorf("failed to create prowjob client: %v", err)
}
// jira client
var jiraClient jira.Client
if o.enableJira {
jiraClient, err = o.jira.Client()
if err != nil {
return fmt.Errorf("failed to create jira client: %v", err)
}
}
klog.Infof("%s releases will be sourced from the following namespaces: %s, and jobs will be run in %s", strings.Title(architecture), strings.Join(o.ReleaseNamespaces, " "), o.JobNamespace)
imageCache := releasecontroller.NewLatestImageCache(tagParts[0], tagParts[1])
execReleaseInfo := releasecontroller.NewExecReleaseInfo(toolsClient, toolsConfig, o.JobNamespace, releaseNamespace, imageCache.Get, jiraClient)
releaseInfo := releasecontroller.NewCachingReleaseInfo(execReleaseInfo, 64*1024*1024, architecture)
graph := releasecontroller.NewUpgradeGraph(architecture)
releasePayloadClient, err := releasepayloadclient.NewForConfig(inClusterCfg)
if err != nil {
klog.Fatal(err)
}
releasePayloadInformerFactory := releasepayloadinformers.NewSharedInformerFactory(releasePayloadClient, 24*time.Hour)
releasePayloadInformer := releasePayloadInformerFactory.Release().V1alpha1().ReleasePayloads()
c := NewController(
client.CoreV1(),
o.ArtifactsHost,
releaseInfo,
graph,
o.AuthenticationMessage,
architecture,
o.ARTSuffix,
releaseNamespace,
releasePayloadInformer.Lister(),
)
var hasSynced []cache.InformerSynced
stopCh := wait.NeverStop
for _, ns := range o.ReleaseNamespaces {
factory := imageinformers.NewSharedInformerFactoryWithOptions(imageClient, 10*time.Minute, imageinformers.WithNamespace(ns))
streams := factory.Image().V1().ImageStreams()
c.releaseLister.Listers[ns] = streams.Lister().ImageStreams(ns)
hasSynced = append(hasSynced, streams.Informer().HasSynced)
factory.Start(stopCh)
}
imageCache.SetLister(c.releaseLister.ImageStreams(releaseNamespace))
releasePayloadInformerFactory.Start(stopCh)
hasSynced = append(hasSynced, releasePayloadInformer.Informer().HasSynced)
prowInformers := releasecontroller.NewDynamicSharedIndexInformer(prowClient, o.ProwNamespace, 10*time.Minute, labels.SelectorFromSet(labels.Set{releasecontroller.ReleaseLabelVerify: "true"}))
hasSynced = append(hasSynced, prowInformers.HasSynced)
go prowInformers.Run(stopCh)
go func() {
index := prowInformers.GetIndexer()
cache.WaitForCacheSync(stopCh, prowInformers.HasSynced)
wait.Until(func() {
for _, item := range index.List() {
job, ok := item.(*unstructured.Unstructured)
if !ok {
continue
}
annotations := job.GetAnnotations()
from, ok := annotations[releasecontroller.ReleaseAnnotationFromTag]
if !ok {
continue
}
to, ok := annotations[releasecontroller.ReleaseAnnotationToTag]
if !ok {
continue
}
jobArchitecture, ok := annotations[releasecontroller.ReleaseAnnotationArchitecture]
if !ok {
continue
}
if jobArchitecture != architecture {
continue
}
status, ok := releasecontroller.ProwJobVerificationStatus(job)
if !ok {
continue
}
graph.Add(from, to, releasecontroller.UpgradeResult{
State: status.State,
URL: releasecontroller.GenerateProwJobResultsURL(status.URL),
})
}
}, 2*time.Minute, stopCh)
}()
klog.Infof("Waiting for caches to sync")
cache.WaitForCacheSync(stopCh, hasSynced...)
// read the graph
go releasecontroller.SyncGraphToSecret(graph, false, releasesClient.CoreV1().Secrets(releaseNamespace), releaseNamespace, "release-upgrade-graph", stopCh)
http.DefaultServeMux.Handle("/metrics", promhttp.Handler())
http.DefaultServeMux.HandleFunc("/graph", c.graphHandler)
http.DefaultServeMux.HandleFunc("/readyz", func(w http.ResponseWriter, r *http.Request) {})
http.DefaultServeMux.Handle("/", c.userInterfaceHandler())
klog.Infof("Listening on port %s for UI and metrics", strconv.Itoa(o.ListenPort))
interrupts.ListenAndServe(&http.Server{Addr: ":" + strconv.Itoa(o.ListenPort)}, time.Second*10)
// report that this release-controller-api is ready while http server is responding
health.ServeReady(func() bool {
resp, err := http.DefaultClient.Get("http://127.0.0.1:" + strconv.Itoa(o.ListenPort) + "/readyz")
if resp != nil {
resp.Body.Close()
}
return err == nil && resp.StatusCode == 200
})
interrupts.WaitForGracefulShutdown()
return nil
}
func (o *options) nonProwJobKubeconfig(inClusterCfg *rest.Config) (*rest.Config, error) {
if o.NonProwJobKubeconfig == "" {
return inClusterCfg, nil
}
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
&clientcmd.ClientConfigLoadingRules{ExplicitPath: o.NonProwJobKubeconfig},
&clientcmd.ConfigOverrides{},
).ClientConfig()
}
func (o *options) releasesKubeconfig(inClusterCfg *rest.Config) (*rest.Config, error) {
if o.ReleasesKubeconfig == "" {
return o.nonProwJobKubeconfig(inClusterCfg)
}
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
&clientcmd.ClientConfigLoadingRules{ExplicitPath: o.ReleasesKubeconfig},
&clientcmd.ConfigOverrides{},
).ClientConfig()
}
func (o *options) toolsKubeconfig(inClusterCfg *rest.Config) (*rest.Config, error) {
if o.ToolsKubeconfig == "" {
return o.nonProwJobKubeconfig(inClusterCfg)
}
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
&clientcmd.ClientConfigLoadingRules{ExplicitPath: o.ToolsKubeconfig},
&clientcmd.ConfigOverrides{},
).ClientConfig()
}
// loadClusterConfig loads connection configuration
// for the cluster we're deploying to. We prefer to
// use in-cluster configuration if possible, but will
// fall back to using default rules otherwise.
func loadClusterConfig() (*rest.Config, error) {
cfg := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(clientcmd.NewDefaultClientConfigLoadingRules(), &clientcmd.ConfigOverrides{})
clusterConfig, err := cfg.ClientConfig()
if err != nil {
return nil, fmt.Errorf("could not load client configuration: %v", err)
}
return clusterConfig, nil
}
func setupKubeconfigWatches(o *options) error {
watcher, err := fsnotify.NewWatcher()
if err != nil {
return fmt.Errorf("failed to set up watcher: %w", err)
}
for _, candidate := range []string{o.ProwJobKubeconfig, o.NonProwJobKubeconfig, o.ReleasesKubeconfig, o.ToolsKubeconfig} {
if _, err := os.Stat(candidate); err != nil {
continue
}
if err := watcher.Add(candidate); err != nil {
return fmt.Errorf("failed to watch %s: %w", candidate, err)
}
}
go func() {
for e := range watcher.Events {
if e.Op == fsnotify.Chmod {
// For some reason we get frequent chmod events from Openshift
continue
}
klog.Infof("event: %s, kubeconfig changed, exiting to make the kubelet restart us so we can pick them up", e.String())
interrupts.Terminate()
}
}()
return nil
}
func (o *options) prowJobClient(cfg *rest.Config) (dynamic.NamespaceableResourceInterface, error) {
if o.ProwJobKubeconfig != "" {
var err error
cfg, err = clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
&clientcmd.ClientConfigLoadingRules{ExplicitPath: o.ProwJobKubeconfig},
&clientcmd.ConfigOverrides{},
).ClientConfig()
if err != nil {
return nil, fmt.Errorf("failed to load prowjob kubeconfig from path %q: %v", o.ProwJobKubeconfig, err)
}
}
dynamicClient, err := dynamic.NewForConfig(cfg)
if err != nil {
return nil, fmt.Errorf("unable to create prow client: %v", err)
}
return dynamicClient.Resource(schema.GroupVersionResource{Group: "prow.k8s.io", Version: "v1", Resource: "prowjobs"}), nil
}