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Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| package spegel | ||
|
|
||
| import ( | ||
| "context" | ||
| "log" | ||
| "net/url" | ||
| "os" | ||
| "strconv" | ||
| "time" | ||
|
|
||
| "github.com/go-logr/logr" | ||
| "github.com/go-logr/stdr" | ||
| "github.com/gorilla/mux" | ||
| "github.com/k3s-io/k3s/pkg/clientaccess" | ||
| "github.com/k3s-io/k3s/pkg/daemons/config" | ||
| "github.com/k3s-io/k3s/pkg/util" | ||
| "github.com/sirupsen/logrus" | ||
| "github.com/xenitab/spegel/pkg/oci" | ||
| "github.com/xenitab/spegel/pkg/registry" | ||
| "github.com/xenitab/spegel/pkg/routing" | ||
| "github.com/xenitab/spegel/pkg/state" | ||
| clientset "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
| "k8s.io/utils/pointer" | ||
| ) | ||
|
|
||
| var ( | ||
| Registries = []string{"docker.io", "registry.k8s.io"} | ||
| LocalAddr = "127.0.0.1:6443" | ||
| ) | ||
|
|
||
| func Register(ctx context.Context, controlConfig *config.Control) error { | ||
| logger := stdr.NewWithOptions(log.New(logrus.StandardLogger().Writer(), "spegel ", log.LstdFlags), stdr.Options{Verbosity: pointer.Int(10)}) | ||
| ctx = logr.NewContext(ctx, logger) | ||
| containerdSock := "/run/k3s/containerd/containerd.sock" | ||
| configPath := "/var/lib/rancher/k3s/agent/etc/containerd/certs.d" | ||
| registryNS := "k8s.io" | ||
|
|
||
| urls := []url.URL{} | ||
| for _, r := range Registries { | ||
| if u, err := url.Parse("https://" + r); err == nil { | ||
| urls = append(urls, *u) | ||
| } | ||
| } | ||
|
|
||
| ociClient, err := oci.NewContainerd(containerdSock, registryNS, configPath, urls) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = ociClient.Verify(ctx) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| restConfig, err := clientcmd.BuildConfigFromFlags("", controlConfig.Runtime.KubeConfigSupervisor) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| restConfig.UserAgent = util.GetUserAgent("spegel") | ||
|
|
||
| k8s, err := clientset.NewForConfig(restConfig) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| resolveLatestTag := false | ||
| resolveRetries, _ := strconv.ParseInt(os.Getenv("SPEGEL_RESOLVE_RETRIES"), 10, 64) | ||
| resolveTimeout := time.Second * 5 | ||
| registryScheme := "https" | ||
| registryPort := strconv.Itoa(controlConfig.SupervisorPort) | ||
| registryAddr := ":" + registryPort | ||
| routerAddr := ":5001" | ||
|
|
||
| bootstrapper := routing.NewKubernetesBootstrapper(k8s, "kube-system", "spegel-leader-election") | ||
| router, err := routing.NewP2PRouter(ctx, routerAddr, bootstrapper, registryPort, registryScheme) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| go func() { | ||
| <-ctx.Done() | ||
| router.Close() | ||
| }() | ||
|
|
||
| go func() { | ||
| state.Track(ctx, ociClient, router, resolveLatestTag) | ||
| }() | ||
|
|
||
| caCert, err := os.ReadFile("/var/lib/rancher/k3s/agent/server-ca.crt") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| client := clientaccess.GetHTTPClient(caCert, "", "") | ||
| reg := registry.NewRegistry(ociClient, router, LocalAddr, int(resolveRetries), resolveTimeout, resolveLatestTag, client.Transport) | ||
| regSvr := reg.Server(registryAddr, logr.FromContextOrDiscard(ctx)) | ||
|
|
||
| muxer := mux.NewRouter().SkipClean(true) | ||
| muxer.PathPrefix("/v2").Handler(regSvr.Handler) | ||
| muxer.NotFoundHandler = controlConfig.Runtime.Handler | ||
| controlConfig.Runtime.Handler = muxer | ||
|
|
||
| return nil | ||
| } |