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Refactor and centralize HTTP registration.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| // Copyright 2015 Google Inc. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package http | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| auth "github.com/abbot/go-http-auth" | ||
| "github.com/golang/glog" | ||
| "github.com/google/cadvisor/api" | ||
| "github.com/google/cadvisor/healthz" | ||
| httpMux "github.com/google/cadvisor/http/mux" | ||
| "github.com/google/cadvisor/manager" | ||
| "github.com/google/cadvisor/pages" | ||
| "github.com/google/cadvisor/pages/static" | ||
| "github.com/google/cadvisor/validate" | ||
| ) | ||
|
|
||
| func RegisterHandlers(mux httpMux.Mux, containerManager manager.Manager, httpAuthFile, httpAuthRealm, httpDigestFile, httpDigestRealm string) error { | ||
| // Basic health handler. | ||
| if err := healthz.RegisterHandler(mux); err != nil { | ||
| return fmt.Errorf("failed to register healthz handler: %s", err) | ||
| } | ||
|
|
||
| // Validation/Debug handler. | ||
| mux.HandleFunc(validate.ValidatePage, func(w http.ResponseWriter, r *http.Request) { | ||
| err := validate.HandleRequest(w, containerManager) | ||
| if err != nil { | ||
| fmt.Fprintf(w, "%s", err) | ||
| } | ||
| }) | ||
|
|
||
| // Register API handler. | ||
| if err := api.RegisterHandlers(mux, containerManager); err != nil { | ||
| return fmt.Errorf("failed to register API handlers: %s", err) | ||
| } | ||
|
|
||
| // Redirect / to containers page. | ||
| mux.Handle("/", http.RedirectHandler(pages.ContainersPage, http.StatusTemporaryRedirect)) | ||
|
|
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| var authenticated bool = false | ||
|
|
||
| // Setup the authenticator object | ||
| if httpAuthFile != "" { | ||
| glog.Infof("Using auth file %s", httpAuthFile) | ||
| secrets := auth.HtpasswdFileProvider(httpAuthFile) | ||
| authenticator := auth.NewBasicAuthenticator(httpAuthRealm, secrets) | ||
| mux.HandleFunc(static.StaticResource, authenticator.Wrap(staticHandler)) | ||
| if err := pages.RegisterHandlersBasic(mux, containerManager, authenticator); err != nil { | ||
| return fmt.Errorf("failed to register pages auth handlers: %s", err) | ||
| } | ||
| authenticated = true | ||
| } | ||
| if httpAuthFile == "" && httpDigestFile != "" { | ||
| glog.Infof("Using digest file %s", httpDigestFile) | ||
| secrets := auth.HtdigestFileProvider(httpDigestFile) | ||
| authenticator := auth.NewDigestAuthenticator(httpDigestRealm, secrets) | ||
| mux.HandleFunc(static.StaticResource, authenticator.Wrap(staticHandler)) | ||
| if err := pages.RegisterHandlersDigest(mux, containerManager, authenticator); err != nil { | ||
| fmt.Errorf("failed to register pages digest handlers: %s", err) | ||
| } | ||
| authenticated = true | ||
| } | ||
|
|
||
| // Change handler based on authenticator initalization | ||
| if !authenticated { | ||
| mux.HandleFunc(static.StaticResource, staticHandlerNoAuth) | ||
| if err := pages.RegisterHandlersBasic(mux, containerManager, nil); err != nil { | ||
| return fmt.Errorf("failed to register pages handlers: %s", err) | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func staticHandlerNoAuth(w http.ResponseWriter, r *http.Request) { | ||
| err := static.HandleRequest(w, r.URL) | ||
| if err != nil { | ||
| fmt.Fprintf(w, "%s", err) | ||
| } | ||
| } | ||
|
|
||
| func staticHandler(w http.ResponseWriter, r *auth.AuthenticatedRequest) { | ||
| err := static.HandleRequest(w, r.URL) | ||
| if err != nil { | ||
| fmt.Fprintf(w, "%s", err) | ||
| } | ||
| } |
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