133 lines
3.7 KiB
Go
133 lines
3.7 KiB
Go
// Copyright 2013 Prometheus Team
|
|
// 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 web
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"html/template"
|
|
"log"
|
|
"net/http"
|
|
"net/http/pprof"
|
|
|
|
"code.google.com/p/gorest"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/client_golang/prometheus/exp"
|
|
|
|
"github.com/prometheus/alert_manager/web/api"
|
|
"github.com/prometheus/alert_manager/web/blob"
|
|
)
|
|
|
|
// Commandline flags.
|
|
var (
|
|
listenAddress = flag.String("listenAddress", ":9090", "Address to listen on for web interface.")
|
|
useLocalAssets = flag.Bool("useLocalAssets", false, "Read assets/templates from file instead of binary.")
|
|
)
|
|
|
|
type WebService struct {
|
|
AlertManagerService *api.AlertManagerService
|
|
AlertsHandler *AlertsHandler
|
|
SilencesHandler *SilencesHandler
|
|
StatusHandler *StatusHandler
|
|
}
|
|
|
|
func (w WebService) ServeForever() error {
|
|
gorest.RegisterService(w.AlertManagerService)
|
|
|
|
exp.Handle("/favicon.ico", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
http.Error(w, "", 404)
|
|
}))
|
|
|
|
// TODO(julius): This will need to be rewritten once the exp package provides
|
|
// the coarse mux behaviors via a wrapper function.
|
|
exp.Handle("/debug/pprof/", http.HandlerFunc(pprof.Index))
|
|
exp.Handle("/debug/pprof/cmdline", http.HandlerFunc(pprof.Cmdline))
|
|
exp.Handle("/debug/pprof/profile", http.HandlerFunc(pprof.Profile))
|
|
exp.Handle("/debug/pprof/symbol", http.HandlerFunc(pprof.Symbol))
|
|
|
|
exp.Handle("/", w.AlertsHandler)
|
|
exp.Handle("/alerts", w.AlertsHandler)
|
|
exp.Handle("/silences", w.SilencesHandler)
|
|
exp.Handle("/status", w.StatusHandler)
|
|
|
|
exp.Handle("/api/", compressionHandler{handler: gorest.Handle()})
|
|
exp.Handle("/metrics.json", prometheus.DefaultHandler)
|
|
if *useLocalAssets {
|
|
exp.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("web/static"))))
|
|
} else {
|
|
exp.Handle("/static/", http.StripPrefix("/static/", new(blob.Handler)))
|
|
}
|
|
|
|
log.Printf("listening on %s", *listenAddress)
|
|
|
|
return http.ListenAndServe(*listenAddress, exp.DefaultCoarseMux)
|
|
}
|
|
|
|
func getLocalTemplate(name string) (*template.Template, error) {
|
|
t := template.New("_base.html")
|
|
t.Funcs(webHelpers)
|
|
return t.ParseFiles(
|
|
"web/templates/_base.html",
|
|
fmt.Sprintf("web/templates/%s.html", name),
|
|
)
|
|
}
|
|
|
|
func getEmbeddedTemplate(name string) (*template.Template, error) {
|
|
t := template.New("_base.html")
|
|
t.Funcs(webHelpers)
|
|
|
|
file, err := blob.GetFile(blob.TemplateFiles, "_base.html")
|
|
if err != nil {
|
|
log.Printf("Could not read base template: %s", err)
|
|
return nil, err
|
|
}
|
|
t.Parse(string(file))
|
|
|
|
file, err = blob.GetFile(blob.TemplateFiles, name+".html")
|
|
if err != nil {
|
|
log.Printf("Could not read %s template: %s", name, err)
|
|
return nil, err
|
|
}
|
|
t.Parse(string(file))
|
|
|
|
return t, nil
|
|
}
|
|
|
|
func getTemplate(name string) (t *template.Template, err error) {
|
|
if *useLocalAssets {
|
|
t, err = getLocalTemplate(name)
|
|
} else {
|
|
t, err = getEmbeddedTemplate(name)
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return t, nil
|
|
}
|
|
|
|
func executeTemplate(w http.ResponseWriter, name string, data interface{}) {
|
|
tpl, err := getTemplate(name)
|
|
if err != nil {
|
|
log.Printf("Error preparing layout template: %s", err)
|
|
return
|
|
}
|
|
err = tpl.Execute(w, data)
|
|
if err != nil {
|
|
log.Printf("Error executing template: %s", err)
|
|
}
|
|
}
|