syncthing/lib/ur/usage_report.go

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// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
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package ur
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import (
"bytes"
"context"
"crypto/tls"
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"encoding/json"
"math/rand"
"net"
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"net/http"
"runtime"
"sort"
"strings"
"sync"
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"time"
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"github.com/syncthing/syncthing/lib/build"
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"github.com/syncthing/syncthing/lib/config"
"github.com/syncthing/syncthing/lib/connections"
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"github.com/syncthing/syncthing/lib/dialer"
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"github.com/syncthing/syncthing/lib/model"
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"github.com/syncthing/syncthing/lib/protocol"
"github.com/syncthing/syncthing/lib/scanner"
"github.com/syncthing/syncthing/lib/upgrade"
"github.com/syncthing/syncthing/lib/ur/contract"
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)
// Current version number of the usage report, for acceptance purposes. If
// fields are added or changed this integer must be incremented so that users
// are prompted for acceptance of the new report.
const Version = 3
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var StartTime = time.Now().Truncate(time.Second)
type Service struct {
cfg config.Wrapper
model model.Model
connectionsService connections.Service
noUpgrade bool
forceRun chan struct{}
}
func New(cfg config.Wrapper, m model.Model, connectionsService connections.Service, noUpgrade bool) *Service {
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return &Service{
cfg: cfg,
model: m,
connectionsService: connectionsService,
noUpgrade: noUpgrade,
forceRun: make(chan struct{}, 1), // Buffered to prevent locking
}
}
// ReportData returns the data to be sent in a usage report with the currently
// configured usage reporting version.
func (s *Service) ReportData(ctx context.Context) (*contract.Report, error) {
urVersion := s.cfg.Options().URAccepted
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return s.reportData(ctx, urVersion, false)
}
// ReportDataPreview returns a preview of the data to be sent in a usage report
// with the given version.
func (s *Service) ReportDataPreview(ctx context.Context, urVersion int) (*contract.Report, error) {
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return s.reportData(ctx, urVersion, true)
}
func (s *Service) reportData(ctx context.Context, urVersion int, preview bool) (*contract.Report, error) {
opts := s.cfg.Options()
defaultFolder := s.cfg.DefaultFolder()
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var totFiles, maxFiles int
var totBytes, maxBytes int64
for folderID := range s.cfg.Folders() {
snap, err := s.model.DBSnapshot(folderID)
if err != nil {
continue
}
global := snap.GlobalSize()
snap.Release()
totFiles += int(global.Files)
totBytes += global.Bytes
if int(global.Files) > maxFiles {
maxFiles = int(global.Files)
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}
if global.Bytes > maxBytes {
maxBytes = global.Bytes
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}
}
var mem runtime.MemStats
runtime.ReadMemStats(&mem)
report := contract.New()
report.URVersion = urVersion
report.UniqueID = opts.URUniqueID
report.Version = build.Version
report.LongVersion = build.LongVersion
report.Platform = runtime.GOOS + "-" + runtime.GOARCH
report.NumFolders = len(s.cfg.Folders())
report.NumDevices = len(s.cfg.Devices())
report.TotFiles = totFiles
report.FolderMaxFiles = maxFiles
report.TotMiB = int(totBytes / 1024 / 1024)
report.FolderMaxMiB = int(maxBytes / 1024 / 1024)
report.MemoryUsageMiB = int((mem.Sys - mem.HeapReleased) / 1024 / 1024)
report.SHA256Perf = CpuBench(ctx, 5, 125*time.Millisecond, false)
report.HashPerf = CpuBench(ctx, 5, 125*time.Millisecond, true)
report.MemorySize = int(memorySize() / 1024 / 1024)
report.NumCPU = runtime.NumCPU()
for _, cfg := range s.cfg.Folders() {
report.RescanIntvs = append(report.RescanIntvs, cfg.RescanIntervalS)
switch cfg.Type {
case config.FolderTypeSendOnly:
report.FolderUses.SendOnly++
case config.FolderTypeSendReceive:
report.FolderUses.SendReceive++
case config.FolderTypeReceiveOnly:
report.FolderUses.ReceiveOnly++
}
if cfg.IgnorePerms {
report.FolderUses.IgnorePerms++
}
if cfg.IgnoreDelete {
report.FolderUses.IgnoreDelete++
}
if cfg.AutoNormalize {
report.FolderUses.AutoNormalize++
}
switch cfg.Versioning.Type {
case "":
// None
case "simple":
report.FolderUses.SimpleVersioning++
case "staggered":
report.FolderUses.StaggeredVersioning++
case "external":
report.FolderUses.ExternalVersioning++
case "trashcan":
report.FolderUses.TrashcanVersioning++
default:
l.Warnf("Unhandled versioning type for usage reports: %s", cfg.Versioning.Type)
}
}
sort.Ints(report.RescanIntvs)
for _, cfg := range s.cfg.Devices() {
if cfg.Introducer {
report.DeviceUses.Introducer++
}
if cfg.CertName != "" && cfg.CertName != "syncthing" {
report.DeviceUses.CustomCertName++
}
switch cfg.Compression {
case protocol.CompressionAlways:
report.DeviceUses.CompressAlways++
case protocol.CompressionMetadata:
report.DeviceUses.CompressMetadata++
case protocol.CompressionNever:
report.DeviceUses.CompressNever++
default:
l.Warnf("Unhandled versioning type for usage reports: %s", cfg.Compression)
}
for _, addr := range cfg.Addresses {
if addr == "dynamic" {
report.DeviceUses.DynamicAddr++
} else {
report.DeviceUses.StaticAddr++
}
}
}
report.Announce.GlobalEnabled = opts.GlobalAnnEnabled
report.Announce.LocalEnabled = opts.LocalAnnEnabled
for _, addr := range opts.RawGlobalAnnServers {
if addr == "default" || addr == "default-v4" || addr == "default-v6" {
report.Announce.DefaultServersDNS++
} else {
report.Announce.OtherServers++
}
}
report.Relays.Enabled = opts.RelaysEnabled
for _, addr := range s.cfg.Options().ListenAddresses() {
switch {
case addr == "dynamic+https://relays.syncthing.net/endpoint":
report.Relays.DefaultServers++
case strings.HasPrefix(addr, "relay://") || strings.HasPrefix(addr, "dynamic+http"):
report.Relays.OtherServers++
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}
}
report.UsesRateLimit = opts.MaxRecvKbps > 0 || opts.MaxSendKbps > 0
report.UpgradeAllowedManual = !(upgrade.DisabledByCompilation || s.noUpgrade)
report.UpgradeAllowedAuto = !(upgrade.DisabledByCompilation || s.noUpgrade) && opts.AutoUpgradeEnabled()
report.UpgradeAllowedPre = !(upgrade.DisabledByCompilation || s.noUpgrade) && opts.AutoUpgradeEnabled() && opts.UpgradeToPreReleases
// V3
if urVersion >= 3 {
report.Uptime = s.UptimeS()
report.NATType = s.connectionsService.NATType()
report.AlwaysLocalNets = len(opts.AlwaysLocalNets) > 0
report.CacheIgnoredFiles = opts.CacheIgnoredFiles
report.OverwriteRemoteDeviceNames = opts.OverwriteRemoteDevNames
report.ProgressEmitterEnabled = opts.ProgressUpdateIntervalS > -1
report.CustomDefaultFolderPath = defaultFolder.Path != "~"
report.CustomTrafficClass = opts.TrafficClass != 0
report.CustomTempIndexMinBlocks = opts.TempIndexMinBlocks != 10
report.TemporariesDisabled = opts.KeepTemporariesH == 0
report.TemporariesCustom = opts.KeepTemporariesH != 24
report.LimitBandwidthInLan = opts.LimitBandwidthInLan
report.CustomReleaseURL = opts.ReleasesURL != "https=//upgrades.syncthing.net/meta.json"
report.RestartOnWakeup = opts.RestartOnWakeup
report.CustomStunServers = len(opts.RawStunServers) != 1 || opts.RawStunServers[0] != "default"
for _, cfg := range s.cfg.Folders() {
if cfg.ScanProgressIntervalS < 0 {
report.FolderUsesV3.ScanProgressDisabled++
}
if cfg.MaxConflicts == 0 {
report.FolderUsesV3.ConflictsDisabled++
} else if cfg.MaxConflicts < 0 {
report.FolderUsesV3.ConflictsUnlimited++
} else {
report.FolderUsesV3.ConflictsOther++
}
if cfg.DisableSparseFiles {
report.FolderUsesV3.DisableSparseFiles++
}
if cfg.DisableTempIndexes {
report.FolderUsesV3.DisableTempIndexes++
}
if cfg.WeakHashThresholdPct < 0 {
report.FolderUsesV3.AlwaysWeakHash++
} else if cfg.WeakHashThresholdPct != 25 {
report.FolderUsesV3.CustomWeakHashThreshold++
}
if cfg.FSWatcherEnabled {
report.FolderUsesV3.FsWatcherEnabled++
}
report.FolderUsesV3.PullOrder[cfg.Order.String()]++
report.FolderUsesV3.FilesystemType[cfg.FilesystemType.String()]++
report.FolderUsesV3.FsWatcherDelays = append(report.FolderUsesV3.FsWatcherDelays, cfg.FSWatcherDelayS)
if cfg.MarkerName != config.DefaultMarkerName {
report.FolderUsesV3.CustomMarkerName++
}
if cfg.CopyOwnershipFromParent {
report.FolderUsesV3.CopyOwnershipFromParent++
}
report.FolderUsesV3.ModTimeWindowS = append(report.FolderUsesV3.ModTimeWindowS, int(cfg.ModTimeWindow().Seconds()))
report.FolderUsesV3.MaxConcurrentWrites = append(report.FolderUsesV3.MaxConcurrentWrites, cfg.MaxConcurrentWrites)
if cfg.DisableFsync {
report.FolderUsesV3.DisableFsync++
}
report.FolderUsesV3.BlockPullOrder[cfg.BlockPullOrder.String()]++
report.FolderUsesV3.CopyRangeMethod[cfg.CopyRangeMethod.String()]++
if cfg.CaseSensitiveFS {
report.FolderUsesV3.CaseSensitiveFS++
}
if cfg.Type == config.FolderTypeReceiveEncrypted {
report.FolderUsesV3.ReceiveEncrypted++
}
}
sort.Ints(report.FolderUsesV3.FsWatcherDelays)
for _, cfg := range s.cfg.Devices() {
if cfg.Untrusted {
report.DeviceUsesV3.Untrusted++
}
}
guiCfg := s.cfg.GUI()
// Anticipate multiple GUI configs in the future, hence store counts.
if guiCfg.Enabled {
report.GUIStats.Enabled++
if guiCfg.UseTLS() {
report.GUIStats.UseTLS++
}
if len(guiCfg.User) > 0 && len(guiCfg.Password) > 0 {
report.GUIStats.UseAuth++
}
if guiCfg.InsecureAdminAccess {
report.GUIStats.InsecureAdminAccess++
}
if guiCfg.Debugging {
report.GUIStats.Debugging++
}
if guiCfg.InsecureSkipHostCheck {
report.GUIStats.InsecureSkipHostCheck++
}
if guiCfg.InsecureAllowFrameLoading {
report.GUIStats.InsecureAllowFrameLoading++
}
addr, err := net.ResolveTCPAddr("tcp", guiCfg.Address())
if err == nil {
if addr.IP.IsLoopback() {
report.GUIStats.ListenLocal++
} else if addr.IP.IsUnspecified() {
report.GUIStats.ListenUnspecified++
}
}
report.GUIStats.Theme[guiCfg.Theme]++
}
}
s.model.UsageReportingStats(report, urVersion, preview)
if err := report.ClearForVersion(urVersion); err != nil {
return nil, err
}
return report, nil
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}
func (s *Service) UptimeS() int {
return int(time.Since(StartTime).Seconds())
}
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func (s *Service) sendUsageReport(ctx context.Context) error {
d, err := s.ReportData(ctx)
if err != nil {
return err
}
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var b bytes.Buffer
if err := json.NewEncoder(&b).Encode(d); err != nil {
return err
}
client := &http.Client{
Transport: &http.Transport{
DialContext: dialer.DialContext,
Proxy: http.ProxyFromEnvironment,
TLSClientConfig: &tls.Config{
InsecureSkipVerify: s.cfg.Options().URPostInsecurely,
},
},
}
req, err := http.NewRequestWithContext(ctx, "POST", s.cfg.Options().URURL, &b)
if err != nil {
return err
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}
req.Header.Set("Content-Type", "application/json")
resp, err := client.Do(req)
if err != nil {
return err
}
resp.Body.Close()
return nil
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}
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func (s *Service) Serve(ctx context.Context) error {
s.cfg.Subscribe(s)
defer s.cfg.Unsubscribe(s)
t := time.NewTimer(time.Duration(s.cfg.Options().URInitialDelayS) * time.Second)
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for {
select {
case <-ctx.Done():
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return ctx.Err()
case <-s.forceRun:
t.Reset(0)
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case <-t.C:
if s.cfg.Options().URAccepted >= 2 {
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err := s.sendUsageReport(ctx)
if err != nil {
l.Infoln("Usage report:", err)
} else {
l.Infof("Sent usage report (version %d)", s.cfg.Options().URAccepted)
}
}
t.Reset(24 * time.Hour) // next report tomorrow
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}
}
}
func (s *Service) VerifyConfiguration(from, to config.Configuration) error {
return nil
}
func (s *Service) CommitConfiguration(from, to config.Configuration) bool {
if from.Options.URAccepted != to.Options.URAccepted || from.Options.URUniqueID != to.Options.URUniqueID || from.Options.URURL != to.Options.URURL {
select {
case s.forceRun <- struct{}{}:
default:
// s.forceRun is one buffered, so even though nothing
// was sent, a run will still happen after this point.
}
}
return true
}
func (*Service) String() string {
return "ur.Service"
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}
var (
blocksResult []protocol.BlockInfo // so the result is not optimized away
blocksResultMut sync.Mutex
)
// CpuBench returns CPU performance as a measure of single threaded SHA-256 MiB/s
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func CpuBench(ctx context.Context, iterations int, duration time.Duration, useWeakHash bool) float64 {
blocksResultMut.Lock()
defer blocksResultMut.Unlock()
dataSize := 16 * protocol.MinBlockSize
bs := make([]byte, dataSize)
r := rand.New(rand.NewSource(time.Now().UnixNano()))
r.Read(bs)
var perf float64
for i := 0; i < iterations; i++ {
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if v := cpuBenchOnce(ctx, duration, useWeakHash, bs); v > perf {
perf = v
}
}
// not looking at the blocksResult makes it unused from a static
// analysis / compiler standpoint...
// blocksResult may be nil at this point if the context is cancelled
if blocksResult != nil {
blocksResult = nil
}
return perf
}
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func cpuBenchOnce(ctx context.Context, duration time.Duration, useWeakHash bool, bs []byte) float64 {
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t0 := time.Now()
b := 0
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var err error
for time.Since(t0) < duration {
r := bytes.NewReader(bs)
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blocksResult, err = scanner.Blocks(ctx, r, protocol.MinBlockSize, int64(len(bs)), nil, useWeakHash)
if err != nil {
return 0 // Context done
}
b += len(bs)
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}
d := time.Since(t0)
return float64(int(float64(b)/d.Seconds()/(1<<20)*100)) / 100
}