6573d5c119
This allows the administrator to specify an externally-reachable URL for the registry. It takes precedence over the X-Forwarded-Proto and X-Forwarded-Host headers, and the hostname in the request. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
933 lines
31 KiB
Go
933 lines
31 KiB
Go
package handlers
|
|
|
|
import (
|
|
cryptorand "crypto/rand"
|
|
"expvar"
|
|
"fmt"
|
|
"math/rand"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"time"
|
|
|
|
log "github.com/Sirupsen/logrus"
|
|
"github.com/docker/distribution"
|
|
"github.com/docker/distribution/configuration"
|
|
ctxu "github.com/docker/distribution/context"
|
|
"github.com/docker/distribution/health"
|
|
"github.com/docker/distribution/health/checks"
|
|
"github.com/docker/distribution/notifications"
|
|
"github.com/docker/distribution/registry/api/errcode"
|
|
"github.com/docker/distribution/registry/api/v2"
|
|
"github.com/docker/distribution/registry/auth"
|
|
registrymiddleware "github.com/docker/distribution/registry/middleware/registry"
|
|
repositorymiddleware "github.com/docker/distribution/registry/middleware/repository"
|
|
"github.com/docker/distribution/registry/proxy"
|
|
"github.com/docker/distribution/registry/storage"
|
|
memorycache "github.com/docker/distribution/registry/storage/cache/memory"
|
|
rediscache "github.com/docker/distribution/registry/storage/cache/redis"
|
|
storagedriver "github.com/docker/distribution/registry/storage/driver"
|
|
"github.com/docker/distribution/registry/storage/driver/factory"
|
|
storagemiddleware "github.com/docker/distribution/registry/storage/driver/middleware"
|
|
"github.com/garyburd/redigo/redis"
|
|
"github.com/gorilla/mux"
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
// randomSecretSize is the number of random bytes to generate if no secret
|
|
// was specified.
|
|
const randomSecretSize = 32
|
|
|
|
// defaultCheckInterval is the default time in between health checks
|
|
const defaultCheckInterval = 10 * time.Second
|
|
|
|
// App is a global registry application object. Shared resources can be placed
|
|
// on this object that will be accessible from all requests. Any writable
|
|
// fields should be protected.
|
|
type App struct {
|
|
context.Context
|
|
|
|
Config *configuration.Configuration
|
|
|
|
router *mux.Router // main application router, configured with dispatchers
|
|
driver storagedriver.StorageDriver // driver maintains the app global storage driver instance.
|
|
registry distribution.Namespace // registry is the primary registry backend for the app instance.
|
|
accessController auth.AccessController // main access controller for application
|
|
|
|
// httpHost is a parsed representation of the http.host parameter from
|
|
// the configuration. Only the Scheme and Host fields are used.
|
|
httpHost url.URL
|
|
|
|
// events contains notification related configuration.
|
|
events struct {
|
|
sink notifications.Sink
|
|
source notifications.SourceRecord
|
|
}
|
|
|
|
redis *redis.Pool
|
|
|
|
// true if this registry is configured as a pull through cache
|
|
isCache bool
|
|
}
|
|
|
|
// NewApp takes a configuration and returns a configured app, ready to serve
|
|
// requests. The app only implements ServeHTTP and can be wrapped in other
|
|
// handlers accordingly.
|
|
func NewApp(ctx context.Context, configuration *configuration.Configuration) *App {
|
|
app := &App{
|
|
Config: configuration,
|
|
Context: ctx,
|
|
router: v2.RouterWithPrefix(configuration.HTTP.Prefix),
|
|
isCache: configuration.Proxy.RemoteURL != "",
|
|
}
|
|
|
|
// Register the handler dispatchers.
|
|
app.register(v2.RouteNameBase, func(ctx *Context, r *http.Request) http.Handler {
|
|
return http.HandlerFunc(apiBase)
|
|
})
|
|
app.register(v2.RouteNameManifest, imageManifestDispatcher)
|
|
app.register(v2.RouteNameCatalog, catalogDispatcher)
|
|
app.register(v2.RouteNameTags, tagsDispatcher)
|
|
app.register(v2.RouteNameBlob, blobDispatcher)
|
|
app.register(v2.RouteNameBlobUpload, blobUploadDispatcher)
|
|
app.register(v2.RouteNameBlobUploadChunk, blobUploadDispatcher)
|
|
|
|
var err error
|
|
app.driver, err = factory.Create(configuration.Storage.Type(), configuration.Storage.Parameters())
|
|
if err != nil {
|
|
// TODO(stevvooe): Move the creation of a service into a protected
|
|
// method, where this is created lazily. Its status can be queried via
|
|
// a health check.
|
|
panic(err)
|
|
}
|
|
|
|
purgeConfig := uploadPurgeDefaultConfig()
|
|
if mc, ok := configuration.Storage["maintenance"]; ok {
|
|
for k, v := range mc {
|
|
switch k {
|
|
case "uploadpurging":
|
|
purgeConfig = v.(map[interface{}]interface{})
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
startUploadPurger(app, app.driver, ctxu.GetLogger(app), purgeConfig)
|
|
|
|
app.driver, err = applyStorageMiddleware(app.driver, configuration.Middleware["storage"])
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
app.configureSecret(configuration)
|
|
app.configureEvents(configuration)
|
|
app.configureRedis(configuration)
|
|
app.configureLogHook(configuration)
|
|
|
|
if configuration.HTTP.Host != "" {
|
|
u, err := url.Parse(configuration.HTTP.Host)
|
|
if err != nil {
|
|
panic(fmt.Sprintf(`could not parse http "host" parameter: %v`, err))
|
|
}
|
|
app.httpHost = *u
|
|
}
|
|
|
|
options := []storage.RegistryOption{}
|
|
|
|
if app.isCache {
|
|
options = append(options, storage.DisableDigestResumption)
|
|
}
|
|
|
|
// configure deletion
|
|
if d, ok := configuration.Storage["delete"]; ok {
|
|
e, ok := d["enabled"]
|
|
if ok {
|
|
if deleteEnabled, ok := e.(bool); ok && deleteEnabled {
|
|
options = append(options, storage.EnableDelete)
|
|
}
|
|
}
|
|
}
|
|
|
|
// configure redirects
|
|
var redirectDisabled bool
|
|
if redirectConfig, ok := configuration.Storage["redirect"]; ok {
|
|
v := redirectConfig["disable"]
|
|
switch v := v.(type) {
|
|
case bool:
|
|
redirectDisabled = v
|
|
default:
|
|
panic(fmt.Sprintf("invalid type for redirect config: %#v", redirectConfig))
|
|
}
|
|
}
|
|
if redirectDisabled {
|
|
ctxu.GetLogger(app).Infof("backend redirection disabled")
|
|
} else {
|
|
options = append(options, storage.EnableRedirect)
|
|
}
|
|
|
|
// configure storage caches
|
|
if cc, ok := configuration.Storage["cache"]; ok {
|
|
v, ok := cc["blobdescriptor"]
|
|
if !ok {
|
|
// Backwards compatible: "layerinfo" == "blobdescriptor"
|
|
v = cc["layerinfo"]
|
|
}
|
|
|
|
switch v {
|
|
case "redis":
|
|
if app.redis == nil {
|
|
panic("redis configuration required to use for layerinfo cache")
|
|
}
|
|
cacheProvider := rediscache.NewRedisBlobDescriptorCacheProvider(app.redis)
|
|
localOptions := append(options, storage.BlobDescriptorCacheProvider(cacheProvider))
|
|
app.registry, err = storage.NewRegistry(app, app.driver, localOptions...)
|
|
if err != nil {
|
|
panic("could not create registry: " + err.Error())
|
|
}
|
|
ctxu.GetLogger(app).Infof("using redis blob descriptor cache")
|
|
case "inmemory":
|
|
cacheProvider := memorycache.NewInMemoryBlobDescriptorCacheProvider()
|
|
localOptions := append(options, storage.BlobDescriptorCacheProvider(cacheProvider))
|
|
app.registry, err = storage.NewRegistry(app, app.driver, localOptions...)
|
|
if err != nil {
|
|
panic("could not create registry: " + err.Error())
|
|
}
|
|
ctxu.GetLogger(app).Infof("using inmemory blob descriptor cache")
|
|
default:
|
|
if v != "" {
|
|
ctxu.GetLogger(app).Warnf("unknown cache type %q, caching disabled", configuration.Storage["cache"])
|
|
}
|
|
}
|
|
}
|
|
|
|
if app.registry == nil {
|
|
// configure the registry if no cache section is available.
|
|
app.registry, err = storage.NewRegistry(app.Context, app.driver, options...)
|
|
if err != nil {
|
|
panic("could not create registry: " + err.Error())
|
|
}
|
|
}
|
|
|
|
app.registry, err = applyRegistryMiddleware(app.Context, app.registry, configuration.Middleware["registry"])
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
authType := configuration.Auth.Type()
|
|
|
|
if authType != "" {
|
|
accessController, err := auth.GetAccessController(configuration.Auth.Type(), configuration.Auth.Parameters())
|
|
if err != nil {
|
|
panic(fmt.Sprintf("unable to configure authorization (%s): %v", authType, err))
|
|
}
|
|
app.accessController = accessController
|
|
ctxu.GetLogger(app).Debugf("configured %q access controller", authType)
|
|
}
|
|
|
|
// configure as a pull through cache
|
|
if configuration.Proxy.RemoteURL != "" {
|
|
app.registry, err = proxy.NewRegistryPullThroughCache(ctx, app.registry, app.driver, configuration.Proxy)
|
|
if err != nil {
|
|
panic(err.Error())
|
|
}
|
|
app.isCache = true
|
|
ctxu.GetLogger(app).Info("Registry configured as a proxy cache to ", configuration.Proxy.RemoteURL)
|
|
}
|
|
|
|
return app
|
|
}
|
|
|
|
// RegisterHealthChecks is an awful hack to defer health check registration
|
|
// control to callers. This should only ever be called once per registry
|
|
// process, typically in a main function. The correct way would be register
|
|
// health checks outside of app, since multiple apps may exist in the same
|
|
// process. Because the configuration and app are tightly coupled,
|
|
// implementing this properly will require a refactor. This method may panic
|
|
// if called twice in the same process.
|
|
func (app *App) RegisterHealthChecks(healthRegistries ...*health.Registry) {
|
|
if len(healthRegistries) > 1 {
|
|
panic("RegisterHealthChecks called with more than one registry")
|
|
}
|
|
healthRegistry := health.DefaultRegistry
|
|
if len(healthRegistries) == 1 {
|
|
healthRegistry = healthRegistries[0]
|
|
}
|
|
|
|
if app.Config.Health.StorageDriver.Enabled {
|
|
interval := app.Config.Health.StorageDriver.Interval
|
|
if interval == 0 {
|
|
interval = defaultCheckInterval
|
|
}
|
|
|
|
storageDriverCheck := func() error {
|
|
_, err := app.driver.List(app, "/") // "/" should always exist
|
|
return err // any error will be treated as failure
|
|
}
|
|
|
|
if app.Config.Health.StorageDriver.Threshold != 0 {
|
|
healthRegistry.RegisterPeriodicThresholdFunc("storagedriver_"+app.Config.Storage.Type(), interval, app.Config.Health.StorageDriver.Threshold, storageDriverCheck)
|
|
} else {
|
|
healthRegistry.RegisterPeriodicFunc("storagedriver_"+app.Config.Storage.Type(), interval, storageDriverCheck)
|
|
}
|
|
}
|
|
|
|
for _, fileChecker := range app.Config.Health.FileCheckers {
|
|
interval := fileChecker.Interval
|
|
if interval == 0 {
|
|
interval = defaultCheckInterval
|
|
}
|
|
ctxu.GetLogger(app).Infof("configuring file health check path=%s, interval=%d", fileChecker.File, interval/time.Second)
|
|
healthRegistry.Register(fileChecker.File, health.PeriodicChecker(checks.FileChecker(fileChecker.File), interval))
|
|
}
|
|
|
|
for _, httpChecker := range app.Config.Health.HTTPCheckers {
|
|
interval := httpChecker.Interval
|
|
if interval == 0 {
|
|
interval = defaultCheckInterval
|
|
}
|
|
|
|
statusCode := httpChecker.StatusCode
|
|
if statusCode == 0 {
|
|
statusCode = 200
|
|
}
|
|
|
|
checker := checks.HTTPChecker(httpChecker.URI, statusCode, httpChecker.Timeout, httpChecker.Headers)
|
|
|
|
if httpChecker.Threshold != 0 {
|
|
ctxu.GetLogger(app).Infof("configuring HTTP health check uri=%s, interval=%d, threshold=%d", httpChecker.URI, interval/time.Second, httpChecker.Threshold)
|
|
healthRegistry.Register(httpChecker.URI, health.PeriodicThresholdChecker(checker, interval, httpChecker.Threshold))
|
|
} else {
|
|
ctxu.GetLogger(app).Infof("configuring HTTP health check uri=%s, interval=%d", httpChecker.URI, interval/time.Second)
|
|
healthRegistry.Register(httpChecker.URI, health.PeriodicChecker(checker, interval))
|
|
}
|
|
}
|
|
|
|
for _, tcpChecker := range app.Config.Health.TCPCheckers {
|
|
interval := tcpChecker.Interval
|
|
if interval == 0 {
|
|
interval = defaultCheckInterval
|
|
}
|
|
|
|
checker := checks.TCPChecker(tcpChecker.Addr, tcpChecker.Timeout)
|
|
|
|
if tcpChecker.Threshold != 0 {
|
|
ctxu.GetLogger(app).Infof("configuring TCP health check addr=%s, interval=%d, threshold=%d", tcpChecker.Addr, interval/time.Second, tcpChecker.Threshold)
|
|
healthRegistry.Register(tcpChecker.Addr, health.PeriodicThresholdChecker(checker, interval, tcpChecker.Threshold))
|
|
} else {
|
|
ctxu.GetLogger(app).Infof("configuring TCP health check addr=%s, interval=%d", tcpChecker.Addr, interval/time.Second)
|
|
healthRegistry.Register(tcpChecker.Addr, health.PeriodicChecker(checker, interval))
|
|
}
|
|
}
|
|
}
|
|
|
|
// register a handler with the application, by route name. The handler will be
|
|
// passed through the application filters and context will be constructed at
|
|
// request time.
|
|
func (app *App) register(routeName string, dispatch dispatchFunc) {
|
|
|
|
// TODO(stevvooe): This odd dispatcher/route registration is by-product of
|
|
// some limitations in the gorilla/mux router. We are using it to keep
|
|
// routing consistent between the client and server, but we may want to
|
|
// replace it with manual routing and structure-based dispatch for better
|
|
// control over the request execution.
|
|
|
|
app.router.GetRoute(routeName).Handler(app.dispatcher(dispatch))
|
|
}
|
|
|
|
// configureEvents prepares the event sink for action.
|
|
func (app *App) configureEvents(configuration *configuration.Configuration) {
|
|
// Configure all of the endpoint sinks.
|
|
var sinks []notifications.Sink
|
|
for _, endpoint := range configuration.Notifications.Endpoints {
|
|
if endpoint.Disabled {
|
|
ctxu.GetLogger(app).Infof("endpoint %s disabled, skipping", endpoint.Name)
|
|
continue
|
|
}
|
|
|
|
ctxu.GetLogger(app).Infof("configuring endpoint %v (%v), timeout=%s, headers=%v", endpoint.Name, endpoint.URL, endpoint.Timeout, endpoint.Headers)
|
|
endpoint := notifications.NewEndpoint(endpoint.Name, endpoint.URL, notifications.EndpointConfig{
|
|
Timeout: endpoint.Timeout,
|
|
Threshold: endpoint.Threshold,
|
|
Backoff: endpoint.Backoff,
|
|
Headers: endpoint.Headers,
|
|
})
|
|
|
|
sinks = append(sinks, endpoint)
|
|
}
|
|
|
|
// NOTE(stevvooe): Moving to a new queueing implementation is as easy as
|
|
// replacing broadcaster with a rabbitmq implementation. It's recommended
|
|
// that the registry instances also act as the workers to keep deployment
|
|
// simple.
|
|
app.events.sink = notifications.NewBroadcaster(sinks...)
|
|
|
|
// Populate registry event source
|
|
hostname, err := os.Hostname()
|
|
if err != nil {
|
|
hostname = configuration.HTTP.Addr
|
|
} else {
|
|
// try to pick the port off the config
|
|
_, port, err := net.SplitHostPort(configuration.HTTP.Addr)
|
|
if err == nil {
|
|
hostname = net.JoinHostPort(hostname, port)
|
|
}
|
|
}
|
|
|
|
app.events.source = notifications.SourceRecord{
|
|
Addr: hostname,
|
|
InstanceID: ctxu.GetStringValue(app, "instance.id"),
|
|
}
|
|
}
|
|
|
|
func (app *App) configureRedis(configuration *configuration.Configuration) {
|
|
if configuration.Redis.Addr == "" {
|
|
ctxu.GetLogger(app).Infof("redis not configured")
|
|
return
|
|
}
|
|
|
|
pool := &redis.Pool{
|
|
Dial: func() (redis.Conn, error) {
|
|
// TODO(stevvooe): Yet another use case for contextual timing.
|
|
ctx := context.WithValue(app, "redis.connect.startedat", time.Now())
|
|
|
|
done := func(err error) {
|
|
logger := ctxu.GetLoggerWithField(ctx, "redis.connect.duration",
|
|
ctxu.Since(ctx, "redis.connect.startedat"))
|
|
if err != nil {
|
|
logger.Errorf("redis: error connecting: %v", err)
|
|
} else {
|
|
logger.Infof("redis: connect %v", configuration.Redis.Addr)
|
|
}
|
|
}
|
|
|
|
conn, err := redis.DialTimeout("tcp",
|
|
configuration.Redis.Addr,
|
|
configuration.Redis.DialTimeout,
|
|
configuration.Redis.ReadTimeout,
|
|
configuration.Redis.WriteTimeout)
|
|
if err != nil {
|
|
ctxu.GetLogger(app).Errorf("error connecting to redis instance %s: %v",
|
|
configuration.Redis.Addr, err)
|
|
done(err)
|
|
return nil, err
|
|
}
|
|
|
|
// authorize the connection
|
|
if configuration.Redis.Password != "" {
|
|
if _, err = conn.Do("AUTH", configuration.Redis.Password); err != nil {
|
|
defer conn.Close()
|
|
done(err)
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
// select the database to use
|
|
if configuration.Redis.DB != 0 {
|
|
if _, err = conn.Do("SELECT", configuration.Redis.DB); err != nil {
|
|
defer conn.Close()
|
|
done(err)
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
done(nil)
|
|
return conn, nil
|
|
},
|
|
MaxIdle: configuration.Redis.Pool.MaxIdle,
|
|
MaxActive: configuration.Redis.Pool.MaxActive,
|
|
IdleTimeout: configuration.Redis.Pool.IdleTimeout,
|
|
TestOnBorrow: func(c redis.Conn, t time.Time) error {
|
|
// TODO(stevvooe): We can probably do something more interesting
|
|
// here with the health package.
|
|
_, err := c.Do("PING")
|
|
return err
|
|
},
|
|
Wait: false, // if a connection is not avialable, proceed without cache.
|
|
}
|
|
|
|
app.redis = pool
|
|
|
|
// setup expvar
|
|
registry := expvar.Get("registry")
|
|
if registry == nil {
|
|
registry = expvar.NewMap("registry")
|
|
}
|
|
|
|
registry.(*expvar.Map).Set("redis", expvar.Func(func() interface{} {
|
|
return map[string]interface{}{
|
|
"Config": configuration.Redis,
|
|
"Active": app.redis.ActiveCount(),
|
|
}
|
|
}))
|
|
}
|
|
|
|
// configureLogHook prepares logging hook parameters.
|
|
func (app *App) configureLogHook(configuration *configuration.Configuration) {
|
|
entry, ok := ctxu.GetLogger(app).(*log.Entry)
|
|
if !ok {
|
|
// somehow, we are not using logrus
|
|
return
|
|
}
|
|
|
|
logger := entry.Logger
|
|
|
|
for _, configHook := range configuration.Log.Hooks {
|
|
if !configHook.Disabled {
|
|
switch configHook.Type {
|
|
case "mail":
|
|
hook := &logHook{}
|
|
hook.LevelsParam = configHook.Levels
|
|
hook.Mail = &mailer{
|
|
Addr: configHook.MailOptions.SMTP.Addr,
|
|
Username: configHook.MailOptions.SMTP.Username,
|
|
Password: configHook.MailOptions.SMTP.Password,
|
|
Insecure: configHook.MailOptions.SMTP.Insecure,
|
|
From: configHook.MailOptions.From,
|
|
To: configHook.MailOptions.To,
|
|
}
|
|
logger.Hooks.Add(hook)
|
|
default:
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// configureSecret creates a random secret if a secret wasn't included in the
|
|
// configuration.
|
|
func (app *App) configureSecret(configuration *configuration.Configuration) {
|
|
if configuration.HTTP.Secret == "" {
|
|
var secretBytes [randomSecretSize]byte
|
|
if _, err := cryptorand.Read(secretBytes[:]); err != nil {
|
|
panic(fmt.Sprintf("could not generate random bytes for HTTP secret: %v", err))
|
|
}
|
|
configuration.HTTP.Secret = string(secretBytes[:])
|
|
ctxu.GetLogger(app).Warn("No HTTP secret provided - generated random secret. This may cause problems with uploads if multiple registries are behind a load-balancer. To provide a shared secret, fill in http.secret in the configuration file or set the REGISTRY_HTTP_SECRET environment variable.")
|
|
}
|
|
}
|
|
|
|
func (app *App) ServeHTTP(w http.ResponseWriter, r *http.Request) {
|
|
defer r.Body.Close() // ensure that request body is always closed.
|
|
|
|
// Instantiate an http context here so we can track the error codes
|
|
// returned by the request router.
|
|
ctx := defaultContextManager.context(app, w, r)
|
|
|
|
defer func() {
|
|
status, ok := ctx.Value("http.response.status").(int)
|
|
if ok && status >= 200 && status <= 399 {
|
|
ctxu.GetResponseLogger(ctx).Infof("response completed")
|
|
}
|
|
}()
|
|
defer defaultContextManager.release(ctx)
|
|
|
|
// NOTE(stevvooe): Total hack to get instrumented responsewriter from context.
|
|
var err error
|
|
w, err = ctxu.GetResponseWriter(ctx)
|
|
if err != nil {
|
|
ctxu.GetLogger(ctx).Warnf("response writer not found in context")
|
|
}
|
|
|
|
// Set a header with the Docker Distribution API Version for all responses.
|
|
w.Header().Add("Docker-Distribution-API-Version", "registry/2.0")
|
|
app.router.ServeHTTP(w, r)
|
|
}
|
|
|
|
// dispatchFunc takes a context and request and returns a constructed handler
|
|
// for the route. The dispatcher will use this to dynamically create request
|
|
// specific handlers for each endpoint without creating a new router for each
|
|
// request.
|
|
type dispatchFunc func(ctx *Context, r *http.Request) http.Handler
|
|
|
|
// TODO(stevvooe): dispatchers should probably have some validation error
|
|
// chain with proper error reporting.
|
|
|
|
// dispatcher returns a handler that constructs a request specific context and
|
|
// handler, using the dispatch factory function.
|
|
func (app *App) dispatcher(dispatch dispatchFunc) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
for headerName, headerValues := range app.Config.HTTP.Headers {
|
|
for _, value := range headerValues {
|
|
w.Header().Add(headerName, value)
|
|
}
|
|
}
|
|
|
|
context := app.context(w, r)
|
|
|
|
if err := app.authorized(w, r, context); err != nil {
|
|
ctxu.GetLogger(context).Warnf("error authorizing context: %v", err)
|
|
return
|
|
}
|
|
|
|
// Add username to request logging
|
|
context.Context = ctxu.WithLogger(context.Context, ctxu.GetLogger(context.Context, "auth.user.name"))
|
|
|
|
if app.nameRequired(r) {
|
|
repository, err := app.registry.Repository(context, getName(context))
|
|
|
|
if err != nil {
|
|
ctxu.GetLogger(context).Errorf("error resolving repository: %v", err)
|
|
|
|
switch err := err.(type) {
|
|
case distribution.ErrRepositoryUnknown:
|
|
context.Errors = append(context.Errors, v2.ErrorCodeNameUnknown.WithDetail(err))
|
|
case distribution.ErrRepositoryNameInvalid:
|
|
context.Errors = append(context.Errors, v2.ErrorCodeNameInvalid.WithDetail(err))
|
|
}
|
|
|
|
if err := errcode.ServeJSON(w, context.Errors); err != nil {
|
|
ctxu.GetLogger(context).Errorf("error serving error json: %v (from %v)", err, context.Errors)
|
|
}
|
|
return
|
|
}
|
|
|
|
// assign and decorate the authorized repository with an event bridge.
|
|
context.Repository = notifications.Listen(
|
|
repository,
|
|
app.eventBridge(context, r))
|
|
|
|
context.Repository, err = applyRepoMiddleware(context.Context, context.Repository, app.Config.Middleware["repository"])
|
|
if err != nil {
|
|
ctxu.GetLogger(context).Errorf("error initializing repository middleware: %v", err)
|
|
context.Errors = append(context.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
|
|
|
|
if err := errcode.ServeJSON(w, context.Errors); err != nil {
|
|
ctxu.GetLogger(context).Errorf("error serving error json: %v (from %v)", err, context.Errors)
|
|
}
|
|
return
|
|
}
|
|
}
|
|
|
|
dispatch(context, r).ServeHTTP(w, r)
|
|
// Automated error response handling here. Handlers may return their
|
|
// own errors if they need different behavior (such as range errors
|
|
// for layer upload).
|
|
if context.Errors.Len() > 0 {
|
|
if err := errcode.ServeJSON(w, context.Errors); err != nil {
|
|
ctxu.GetLogger(context).Errorf("error serving error json: %v (from %v)", err, context.Errors)
|
|
}
|
|
|
|
app.logError(context, context.Errors)
|
|
}
|
|
})
|
|
}
|
|
|
|
func (app *App) logError(context context.Context, errors errcode.Errors) {
|
|
for _, e1 := range errors {
|
|
var c ctxu.Context
|
|
|
|
switch e1.(type) {
|
|
case errcode.Error:
|
|
e, _ := e1.(errcode.Error)
|
|
c = ctxu.WithValue(context, "err.code", e.Code)
|
|
c = ctxu.WithValue(c, "err.message", e.Code.Message())
|
|
c = ctxu.WithValue(c, "err.detail", e.Detail)
|
|
case errcode.ErrorCode:
|
|
e, _ := e1.(errcode.ErrorCode)
|
|
c = ctxu.WithValue(context, "err.code", e)
|
|
c = ctxu.WithValue(c, "err.message", e.Message())
|
|
default:
|
|
// just normal go 'error'
|
|
c = ctxu.WithValue(context, "err.code", errcode.ErrorCodeUnknown)
|
|
c = ctxu.WithValue(c, "err.message", e1.Error())
|
|
}
|
|
|
|
c = ctxu.WithLogger(c, ctxu.GetLogger(c,
|
|
"err.code",
|
|
"err.message",
|
|
"err.detail"))
|
|
ctxu.GetResponseLogger(c).Errorf("response completed with error")
|
|
}
|
|
}
|
|
|
|
// context constructs the context object for the application. This only be
|
|
// called once per request.
|
|
func (app *App) context(w http.ResponseWriter, r *http.Request) *Context {
|
|
ctx := defaultContextManager.context(app, w, r)
|
|
ctx = ctxu.WithVars(ctx, r)
|
|
ctx = ctxu.WithLogger(ctx, ctxu.GetLogger(ctx,
|
|
"vars.name",
|
|
"vars.reference",
|
|
"vars.digest",
|
|
"vars.uuid"))
|
|
|
|
context := &Context{
|
|
App: app,
|
|
Context: ctx,
|
|
}
|
|
|
|
if app.httpHost.Scheme != "" && app.httpHost.Host != "" {
|
|
// A "host" item in the configuration takes precedence over
|
|
// X-Forwarded-Proto and X-Forwarded-Host headers, and the
|
|
// hostname in the request.
|
|
context.urlBuilder = v2.NewURLBuilder(&app.httpHost)
|
|
} else {
|
|
context.urlBuilder = v2.NewURLBuilderFromRequest(r)
|
|
}
|
|
|
|
return context
|
|
}
|
|
|
|
// authorized checks if the request can proceed with access to the requested
|
|
// repository. If it succeeds, the context may access the requested
|
|
// repository. An error will be returned if access is not available.
|
|
func (app *App) authorized(w http.ResponseWriter, r *http.Request, context *Context) error {
|
|
ctxu.GetLogger(context).Debug("authorizing request")
|
|
repo := getName(context)
|
|
|
|
if app.accessController == nil {
|
|
return nil // access controller is not enabled.
|
|
}
|
|
|
|
var accessRecords []auth.Access
|
|
|
|
if repo != "" {
|
|
accessRecords = appendAccessRecords(accessRecords, r.Method, repo)
|
|
} else {
|
|
// Only allow the name not to be set on the base route.
|
|
if app.nameRequired(r) {
|
|
// For this to be properly secured, repo must always be set for a
|
|
// resource that may make a modification. The only condition under
|
|
// which name is not set and we still allow access is when the
|
|
// base route is accessed. This section prevents us from making
|
|
// that mistake elsewhere in the code, allowing any operation to
|
|
// proceed.
|
|
if err := errcode.ServeJSON(w, errcode.ErrorCodeUnauthorized); err != nil {
|
|
ctxu.GetLogger(context).Errorf("error serving error json: %v (from %v)", err, context.Errors)
|
|
}
|
|
return fmt.Errorf("forbidden: no repository name")
|
|
}
|
|
accessRecords = appendCatalogAccessRecord(accessRecords, r)
|
|
}
|
|
|
|
ctx, err := app.accessController.Authorized(context.Context, accessRecords...)
|
|
if err != nil {
|
|
switch err := err.(type) {
|
|
case auth.Challenge:
|
|
// Add the appropriate WWW-Auth header
|
|
err.SetHeaders(w)
|
|
|
|
if err := errcode.ServeJSON(w, errcode.ErrorCodeUnauthorized.WithDetail(accessRecords)); err != nil {
|
|
ctxu.GetLogger(context).Errorf("error serving error json: %v (from %v)", err, context.Errors)
|
|
}
|
|
default:
|
|
// This condition is a potential security problem either in
|
|
// the configuration or whatever is backing the access
|
|
// controller. Just return a bad request with no information
|
|
// to avoid exposure. The request should not proceed.
|
|
ctxu.GetLogger(context).Errorf("error checking authorization: %v", err)
|
|
w.WriteHeader(http.StatusBadRequest)
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
// TODO(stevvooe): This pattern needs to be cleaned up a bit. One context
|
|
// should be replaced by another, rather than replacing the context on a
|
|
// mutable object.
|
|
context.Context = ctx
|
|
return nil
|
|
}
|
|
|
|
// eventBridge returns a bridge for the current request, configured with the
|
|
// correct actor and source.
|
|
func (app *App) eventBridge(ctx *Context, r *http.Request) notifications.Listener {
|
|
actor := notifications.ActorRecord{
|
|
Name: getUserName(ctx, r),
|
|
}
|
|
request := notifications.NewRequestRecord(ctxu.GetRequestID(ctx), r)
|
|
|
|
return notifications.NewBridge(ctx.urlBuilder, app.events.source, actor, request, app.events.sink)
|
|
}
|
|
|
|
// nameRequired returns true if the route requires a name.
|
|
func (app *App) nameRequired(r *http.Request) bool {
|
|
route := mux.CurrentRoute(r)
|
|
routeName := route.GetName()
|
|
return route == nil || (routeName != v2.RouteNameBase && routeName != v2.RouteNameCatalog)
|
|
}
|
|
|
|
// apiBase implements a simple yes-man for doing overall checks against the
|
|
// api. This can support auth roundtrips to support docker login.
|
|
func apiBase(w http.ResponseWriter, r *http.Request) {
|
|
const emptyJSON = "{}"
|
|
// Provide a simple /v2/ 200 OK response with empty json response.
|
|
w.Header().Set("Content-Type", "application/json; charset=utf-8")
|
|
w.Header().Set("Content-Length", fmt.Sprint(len(emptyJSON)))
|
|
|
|
fmt.Fprint(w, emptyJSON)
|
|
}
|
|
|
|
// appendAccessRecords checks the method and adds the appropriate Access records to the records list.
|
|
func appendAccessRecords(records []auth.Access, method string, repo string) []auth.Access {
|
|
resource := auth.Resource{
|
|
Type: "repository",
|
|
Name: repo,
|
|
}
|
|
|
|
switch method {
|
|
case "GET", "HEAD":
|
|
records = append(records,
|
|
auth.Access{
|
|
Resource: resource,
|
|
Action: "pull",
|
|
})
|
|
case "POST", "PUT", "PATCH":
|
|
records = append(records,
|
|
auth.Access{
|
|
Resource: resource,
|
|
Action: "pull",
|
|
},
|
|
auth.Access{
|
|
Resource: resource,
|
|
Action: "push",
|
|
})
|
|
case "DELETE":
|
|
// DELETE access requires full admin rights, which is represented
|
|
// as "*". This may not be ideal.
|
|
records = append(records,
|
|
auth.Access{
|
|
Resource: resource,
|
|
Action: "*",
|
|
})
|
|
}
|
|
return records
|
|
}
|
|
|
|
// Add the access record for the catalog if it's our current route
|
|
func appendCatalogAccessRecord(accessRecords []auth.Access, r *http.Request) []auth.Access {
|
|
route := mux.CurrentRoute(r)
|
|
routeName := route.GetName()
|
|
|
|
if routeName == v2.RouteNameCatalog {
|
|
resource := auth.Resource{
|
|
Type: "registry",
|
|
Name: "catalog",
|
|
}
|
|
|
|
accessRecords = append(accessRecords,
|
|
auth.Access{
|
|
Resource: resource,
|
|
Action: "*",
|
|
})
|
|
}
|
|
return accessRecords
|
|
}
|
|
|
|
// applyRegistryMiddleware wraps a registry instance with the configured middlewares
|
|
func applyRegistryMiddleware(ctx context.Context, registry distribution.Namespace, middlewares []configuration.Middleware) (distribution.Namespace, error) {
|
|
for _, mw := range middlewares {
|
|
rmw, err := registrymiddleware.Get(ctx, mw.Name, mw.Options, registry)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unable to configure registry middleware (%s): %s", mw.Name, err)
|
|
}
|
|
registry = rmw
|
|
}
|
|
return registry, nil
|
|
|
|
}
|
|
|
|
// applyRepoMiddleware wraps a repository with the configured middlewares
|
|
func applyRepoMiddleware(ctx context.Context, repository distribution.Repository, middlewares []configuration.Middleware) (distribution.Repository, error) {
|
|
for _, mw := range middlewares {
|
|
rmw, err := repositorymiddleware.Get(ctx, mw.Name, mw.Options, repository)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
repository = rmw
|
|
}
|
|
return repository, nil
|
|
}
|
|
|
|
// applyStorageMiddleware wraps a storage driver with the configured middlewares
|
|
func applyStorageMiddleware(driver storagedriver.StorageDriver, middlewares []configuration.Middleware) (storagedriver.StorageDriver, error) {
|
|
for _, mw := range middlewares {
|
|
smw, err := storagemiddleware.Get(mw.Name, mw.Options, driver)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unable to configure storage middleware (%s): %v", mw.Name, err)
|
|
}
|
|
driver = smw
|
|
}
|
|
return driver, nil
|
|
}
|
|
|
|
// uploadPurgeDefaultConfig provides a default configuration for upload
|
|
// purging to be used in the absence of configuration in the
|
|
// confifuration file
|
|
func uploadPurgeDefaultConfig() map[interface{}]interface{} {
|
|
config := map[interface{}]interface{}{}
|
|
config["enabled"] = true
|
|
config["age"] = "168h"
|
|
config["interval"] = "24h"
|
|
config["dryrun"] = false
|
|
return config
|
|
}
|
|
|
|
func badPurgeUploadConfig(reason string) {
|
|
panic(fmt.Sprintf("Unable to parse upload purge configuration: %s", reason))
|
|
}
|
|
|
|
// startUploadPurger schedules a goroutine which will periodically
|
|
// check upload directories for old files and delete them
|
|
func startUploadPurger(ctx context.Context, storageDriver storagedriver.StorageDriver, log ctxu.Logger, config map[interface{}]interface{}) {
|
|
if config["enabled"] == false {
|
|
return
|
|
}
|
|
|
|
var purgeAgeDuration time.Duration
|
|
var err error
|
|
purgeAge, ok := config["age"]
|
|
if ok {
|
|
ageStr, ok := purgeAge.(string)
|
|
if !ok {
|
|
badPurgeUploadConfig("age is not a string")
|
|
}
|
|
purgeAgeDuration, err = time.ParseDuration(ageStr)
|
|
if err != nil {
|
|
badPurgeUploadConfig(fmt.Sprintf("Cannot parse duration: %s", err.Error()))
|
|
}
|
|
} else {
|
|
badPurgeUploadConfig("age missing")
|
|
}
|
|
|
|
var intervalDuration time.Duration
|
|
interval, ok := config["interval"]
|
|
if ok {
|
|
intervalStr, ok := interval.(string)
|
|
if !ok {
|
|
badPurgeUploadConfig("interval is not a string")
|
|
}
|
|
|
|
intervalDuration, err = time.ParseDuration(intervalStr)
|
|
if err != nil {
|
|
badPurgeUploadConfig(fmt.Sprintf("Cannot parse interval: %s", err.Error()))
|
|
}
|
|
} else {
|
|
badPurgeUploadConfig("interval missing")
|
|
}
|
|
|
|
var dryRunBool bool
|
|
dryRun, ok := config["dryrun"]
|
|
if ok {
|
|
dryRunBool, ok = dryRun.(bool)
|
|
if !ok {
|
|
badPurgeUploadConfig("cannot parse dryrun")
|
|
}
|
|
} else {
|
|
badPurgeUploadConfig("dryrun missing")
|
|
}
|
|
|
|
go func() {
|
|
rand.Seed(time.Now().Unix())
|
|
jitter := time.Duration(rand.Int()%60) * time.Minute
|
|
log.Infof("Starting upload purge in %s", jitter)
|
|
time.Sleep(jitter)
|
|
|
|
for {
|
|
storage.PurgeUploads(ctx, storageDriver, time.Now().Add(-purgeAgeDuration), !dryRunBool)
|
|
log.Infof("Starting upload purge in %s", intervalDuration)
|
|
time.Sleep(intervalDuration)
|
|
}
|
|
}()
|
|
}
|