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// Copyright 2014 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 pages
import (
"fmt"
"html/template"
"net/http"
"strings"
auth "github.com/abbot/go-http-auth"
"github.com/golang/glog"
httpMux "github.com/google/cadvisor/http/mux"
info "github.com/google/cadvisor/info/v1"
"github.com/google/cadvisor/manager"
)
var pageTemplate *template.Template
type link struct {
// Text to show in the link.
Text string
// Web address to link to.
Link string
}
type keyVal struct {
Key string
Value string
}
type pageData struct {
DisplayName string
ContainerName string
ParentContainers []link
Subcontainers []link
Spec info.ContainerSpec
Stats []*info.ContainerStats
MachineInfo *info.MachineInfo
IsRoot bool
ResourcesAvailable bool
CpuAvailable bool
MemoryAvailable bool
NetworkAvailable bool
FsAvailable bool
Root string
DockerStatus []keyVal
DockerDriverStatus []keyVal
DockerImages []manager.DockerImage
}
func init() {
pageTemplate = template.New("containersTemplate").Funcs(funcMap)
_, err := pageTemplate.Parse(containersHtmlTemplate)
if err != nil {
glog.Fatalf("Failed to parse template: %s", err)
}
}
func containerHandlerNoAuth(containerManager manager.Manager) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
err := serveContainersPage(containerManager, w, r.URL)
if err != nil {
fmt.Fprintf(w, "%s", err)
}
}
}
func containerHandler(containerManager manager.Manager) auth.AuthenticatedHandlerFunc {
return func(w http.ResponseWriter, r *auth.AuthenticatedRequest) {
err := serveContainersPage(containerManager, w, r.URL)
if err != nil {
fmt.Fprintf(w, "%s", err)
}
}
}
func dockerHandlerNoAuth(containerManager manager.Manager) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
err := serveDockerPage(containerManager, w, r.URL)
if err != nil {
fmt.Fprintf(w, "%s", err)
}
}
}
func dockerHandler(containerManager manager.Manager) auth.AuthenticatedHandlerFunc {
return func(w http.ResponseWriter, r *auth.AuthenticatedRequest) {
err := serveDockerPage(containerManager, w, r.URL)
if err != nil {
fmt.Fprintf(w, "%s", err)
}
}
}
// Register http handlers
func RegisterHandlersDigest(mux httpMux.Mux, containerManager manager.Manager, authenticator *auth.DigestAuth) error {
// Register the handler for the containers page.
if authenticator != nil {
mux.HandleFunc(ContainersPage, authenticator.Wrap(containerHandler(containerManager)))
mux.HandleFunc(DockerPage, authenticator.Wrap(dockerHandler(containerManager)))
} else {
mux.HandleFunc(ContainersPage, containerHandlerNoAuth(containerManager))
mux.HandleFunc(DockerPage, dockerHandlerNoAuth(containerManager))
}
return nil
}
func RegisterHandlersBasic(mux httpMux.Mux, containerManager manager.Manager, authenticator *auth.BasicAuth) error {
// Register the handler for the containers and docker age.
if authenticator != nil {
mux.HandleFunc(ContainersPage, authenticator.Wrap(containerHandler(containerManager)))
mux.HandleFunc(DockerPage, authenticator.Wrap(dockerHandler(containerManager)))
} else {
mux.HandleFunc(ContainersPage, containerHandlerNoAuth(containerManager))
mux.HandleFunc(DockerPage, dockerHandlerNoAuth(containerManager))
}
return nil
}
func getContainerDisplayName(cont info.ContainerReference) string {
// Pick a user-added alias as display name.
displayName := ""
for _, alias := range cont.Aliases {
// ignore container id as alias.
if strings.Contains(cont.Name, alias) {
continue
}
// pick shortest display name if multiple aliases are available.
if displayName == "" || len(displayName) >= len(alias) {
displayName = alias
}
}
if displayName == "" {
displayName = cont.Name
} else if len(displayName) > 50 {
// truncate display name to fit in one line.
displayName = displayName[:50] + "..."
}
// Add the full container name to the display name.
if displayName != cont.Name {
displayName = fmt.Sprintf("%s (%s)", displayName, cont.Name)
}
return displayName
}
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