forked from uber/kraken
/
server.go
87 lines (72 loc) · 2.32 KB
/
server.go
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// Copyright (c) 2016-2019 Uber Technologies, Inc.
//
// 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 main
import (
"bufio"
"encoding/json"
"fmt"
"log"
"net/http"
"os"
"github.com/gorilla/mux"
"github.com/uber/kraken/lib/torrent/networkevent"
)
type server struct {
events []*networkevent.Event
}
func newServer(eventFile *os.File) *server {
var events []*networkevent.Event
scanner := bufio.NewScanner(eventFile)
for scanner.Scan() {
line := scanner.Bytes()
var event networkevent.Event
if err := json.Unmarshal(line, &event); err != nil {
log.Printf("Error unmarshalling event: %s\n", err)
continue
}
events = append(events, &event)
}
events = networkevent.Filter(
events,
networkevent.AddTorrent,
networkevent.AddActiveConn,
networkevent.DropActiveConn,
networkevent.BlacklistConn,
networkevent.ReceivePiece,
networkevent.TorrentComplete,
networkevent.TorrentCancelled)
networkevent.Sort(events)
return &server{events}
}
func (s *server) handler() http.Handler {
r := mux.NewRouter()
r.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/static/html/app.html", http.StatusSeeOther)
})
fs := http.FileServer(http.Dir("./tools/bin/visualization/static/"))
r.PathPrefix("/static/").Handler(http.StripPrefix("/static/", fs))
r.HandleFunc("/events", s.getEvents)
return r
}
func (s *server) getEvents(w http.ResponseWriter, r *http.Request) {
if err := json.NewEncoder(w).Encode(s.events); err != nil {
log.Printf("Error encoding events: %s\n", err)
http.Error(w, fmt.Sprintf("encode events: %s", err), 500)
return
}
}
type byTime []networkevent.Event
func (s byTime) Len() int { return len(s) }
func (s byTime) Less(i, j int) bool { return s[i].Time.Before(s[j].Time) }
func (s byTime) Swap(i, j int) { s[i], s[j] = s[j], s[i] }