119 lines
4.1 KiB
Go
119 lines
4.1 KiB
Go
// 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"
|
|
"os"
|
|
|
|
"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/metrics"
|
|
"github.com/google/cadvisor/pages"
|
|
"github.com/google/cadvisor/pages/static"
|
|
"github.com/google/cadvisor/validate"
|
|
|
|
auth "github.com/abbot/go-http-auth"
|
|
"github.com/golang/glog"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/client_golang/prometheus/promhttp"
|
|
)
|
|
|
|
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))
|
|
|
|
var authenticated bool
|
|
|
|
// 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 {
|
|
return 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
|
|
}
|
|
|
|
// RegisterPrometheusHandler creates a new PrometheusCollector and configures
|
|
// the provided HTTP mux to handle the given Prometheus endpoint.
|
|
func RegisterPrometheusHandler(mux httpmux.Mux, containerManager manager.Manager, prometheusEndpoint string, f metrics.ContainerLabelsFunc) {
|
|
r := prometheus.NewRegistry()
|
|
r.MustRegister(
|
|
metrics.NewPrometheusCollector(containerManager, f),
|
|
prometheus.NewGoCollector(),
|
|
prometheus.NewProcessCollector(os.Getpid(), ""),
|
|
)
|
|
mux.Handle(prometheusEndpoint, promhttp.HandlerFor(r, promhttp.HandlerOpts{ErrorHandling: promhttp.ContinueOnError}))
|
|
}
|
|
|
|
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)
|
|
}
|
|
}
|