storj/storagenode/console/consoleserver/server.go
2019-06-26 16:36:47 +03:00

245 lines
6.3 KiB
Go

// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package consoleserver
import (
"context"
"encoding/json"
"net"
"net/http"
"path/filepath"
"time"
"github.com/zeebo/errs"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
monkit "gopkg.in/spacemonkeygo/monkit.v2"
"storj.io/storj/internal/version"
"storj.io/storj/pkg/storj"
"storj.io/storj/storagenode/console"
)
const (
contentType = "Content-Type"
applicationJSON = "application/json"
)
// Error is storagenode console web error type
var (
mon = monkit.Package()
Error = errs.Class("storagenode console web error")
)
// Config contains configuration for storagenode console web server
type Config struct {
Address string `help:"server address of the api gateway and frontend app" default:"127.0.0.1:14002"`
StaticDir string `help:"path to static resources" default:""`
}
// Server represents storagenode console web server
type Server struct {
log *zap.Logger
config Config
service *console.Service
listener net.Listener
server http.Server
}
// NewServer creates new instance of storagenode console web server
func NewServer(logger *zap.Logger, config Config, service *console.Service, listener net.Listener) *Server {
server := Server{
log: logger,
service: service,
config: config,
listener: listener,
}
var fs http.Handler
mux := http.NewServeMux()
// handle static pages
if config.StaticDir != "" {
fs = http.FileServer(http.Dir(server.config.StaticDir))
mux.Handle("/static/", http.StripPrefix("/static", fs))
mux.Handle("/", http.HandlerFunc(server.appHandler))
mux.Handle("/api/dashboard/", http.HandlerFunc(server.dashboardHandler))
}
server.server = http.Server{
Handler: mux,
}
return &server
}
// Run starts the server that host webapp and api endpoints
func (s *Server) Run(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
ctx, cancel := context.WithCancel(ctx)
var group errgroup.Group
group.Go(func() error {
<-ctx.Done()
return s.server.Shutdown(nil)
})
group.Go(func() error {
defer cancel()
return s.server.Serve(s.listener)
})
return group.Wait()
}
// Close closes server and underlying listener
func (s *Server) Close() error {
return s.server.Close()
}
// appHandler is web app http handler function
func (s *Server) appHandler(w http.ResponseWriter, req *http.Request) {
http.ServeFile(w, req, filepath.Join(s.config.StaticDir, "dist", "index.html"))
}
// appHandler is web app http handler function
func (s *Server) dashboardHandler(w http.ResponseWriter, req *http.Request) {
ctx := req.Context()
defer mon.Task()(&ctx)(nil)
w.Header().Set(contentType, applicationJSON)
var response struct {
Data struct {
Bandwidth console.BandwidthInfo `json:"bandwidth"`
DiskSpace console.DiskSpaceInfo `json:"diskSpace"`
WalletAddress string `json:"walletAddress"`
VersionInfo version.Info `json:"versionInfo"`
IsLastVersion bool `json:"isLastVersion"`
Uptime time.Duration `json:"uptime"`
NodeID string `json:"nodeId"`
Satellites storj.NodeIDList `json:"satellites"`
} `json:"data"`
Error string `json:"error,omitempty"`
}
defer func() {
err := json.NewEncoder(w).Encode(&response)
if err != nil {
s.log.Error(err.Error())
}
}()
if req.Method != http.MethodGet {
w.WriteHeader(http.StatusNotFound)
return
}
satelliteIDParam := req.URL.Query().Get("satelliteId")
satelliteID, err := s.parseSatelliteIDParam(satelliteIDParam)
if err != nil {
s.log.Error("satellite id is not valid", zap.Error(err))
response.Error = "satellite id is not valid"
w.WriteHeader(http.StatusBadRequest)
return
}
satellites, err := s.service.GetSatellites(ctx)
if err != nil {
s.log.Error("can not get satellites list", zap.Error(err))
response.Error = "can not get satellites list"
w.WriteHeader(http.StatusInternalServerError)
return
}
// checks if current satellite id is related to current storage node
if satelliteID != nil {
if err = s.checkSatelliteID(satellites, *satelliteID); err != nil {
s.log.Error(err.Error())
response.Error = err.Error()
w.WriteHeader(http.StatusBadRequest)
return
}
}
space, err := s.getStorage(ctx, satelliteID)
if err != nil {
s.log.Error("can not get disk space usage", zap.Error(err))
response.Error = "can not get disk space usage"
w.WriteHeader(http.StatusInternalServerError)
return
}
usage, err := s.getBandwidth(ctx, satelliteID)
if err != nil {
s.log.Error("can not get bandwidth usage", zap.Error(err))
response.Error = "can not get bandwidth usage"
w.WriteHeader(http.StatusInternalServerError)
return
}
walletAddress := s.service.GetWalletAddress(ctx)
versionInfo := s.service.GetVersion(ctx)
err = s.service.CheckVersion(ctx)
if err != nil {
s.log.Error("can not check latest storage node version", zap.Error(err))
response.Error = "can not check latest storage node version"
w.WriteHeader(http.StatusInternalServerError)
return
}
uptime := s.service.GetUptime(ctx)
nodeID := s.service.GetNodeID(ctx)
response.Data.DiskSpace = *space
response.Data.Bandwidth = *usage
response.Data.WalletAddress = walletAddress
response.Data.VersionInfo = versionInfo
response.Data.IsLastVersion = true
response.Data.Uptime = uptime
response.Data.NodeID = nodeID.String()
response.Data.Satellites = satellites
w.WriteHeader(http.StatusOK)
}
func (s *Server) getBandwidth(ctx context.Context, satelliteID *storj.NodeID) (_ *console.BandwidthInfo, err error) {
if satelliteID != nil {
return s.service.GetBandwidthBySatellite(ctx, *satelliteID)
}
return s.service.GetUsedBandwidthTotal(ctx)
}
func (s *Server) getStorage(ctx context.Context, satelliteID *storj.NodeID) (_ *console.DiskSpaceInfo, err error) {
if satelliteID != nil {
return s.service.GetUsedStorageBySatellite(ctx, *satelliteID)
}
return s.service.GetUsedStorageTotal(ctx)
}
func (s *Server) checkSatelliteID(satelliteIDs storj.NodeIDList, satelliteID storj.NodeID) error {
for _, id := range satelliteIDs {
if satelliteID == id {
return nil
}
}
return errs.New("satellite id in not found in the available satellite list")
}
func (s *Server) parseSatelliteIDParam(satelliteID string) (*storj.NodeID, error) {
if satelliteID != "" {
id, err := storj.NodeIDFromString(satelliteID)
return &id, err
}
return nil, nil
}