103 lines
2.6 KiB
Go
Executable File
103 lines
2.6 KiB
Go
Executable File
// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
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// All rights reserved. Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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package stats
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import (
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"time"
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"github.com/syncthing/syncthing/internal/protocol"
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"github.com/syndtr/goleveldb/leveldb"
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)
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const (
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deviceStatisticTypeLastSeen = iota
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)
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var deviceStatisticsTypes = []byte{
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deviceStatisticTypeLastSeen,
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}
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type DeviceStatistics struct {
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LastSeen time.Time
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}
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type DeviceStatisticsReference struct {
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db *leveldb.DB
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device protocol.DeviceID
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}
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func NewDeviceStatisticsReference(db *leveldb.DB, device protocol.DeviceID) *DeviceStatisticsReference {
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return &DeviceStatisticsReference{
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db: db,
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device: device,
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}
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}
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func (s *DeviceStatisticsReference) key(stat byte) []byte {
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k := make([]byte, 1+1+32)
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k[0] = keyTypeDeviceStatistic
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k[1] = stat
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copy(k[1+1:], s.device[:])
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return k
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}
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func (s *DeviceStatisticsReference) GetLastSeen() time.Time {
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value, err := s.db.Get(s.key(deviceStatisticTypeLastSeen), nil)
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if err != nil {
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if err != leveldb.ErrNotFound {
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l.Warnln("DeviceStatisticsReference: Failed loading last seen value for", s.device, ":", err)
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}
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return time.Unix(0, 0)
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}
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rtime := time.Time{}
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err = rtime.UnmarshalBinary(value)
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if err != nil {
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l.Warnln("DeviceStatisticsReference: Failed parsing last seen value for", s.device, ":", err)
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return time.Unix(0, 0)
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}
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if debug {
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l.Debugln("stats.DeviceStatisticsReference.GetLastSeen:", s.device, rtime)
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}
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return rtime
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}
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func (s *DeviceStatisticsReference) WasSeen() {
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if debug {
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l.Debugln("stats.DeviceStatisticsReference.WasSeen:", s.device)
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}
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value, err := time.Now().MarshalBinary()
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if err != nil {
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l.Warnln("DeviceStatisticsReference: Failed serializing last seen value for", s.device, ":", err)
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return
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}
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err = s.db.Put(s.key(deviceStatisticTypeLastSeen), value, nil)
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if err != nil {
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l.Warnln("Failed serializing last seen value for", s.device, ":", err)
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}
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}
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// Never called, maybe because it's worth while to keep the data
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// or maybe because we have no easy way of knowing that a device has been removed.
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func (s *DeviceStatisticsReference) Delete() error {
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for _, stype := range deviceStatisticsTypes {
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err := s.db.Delete(s.key(stype), nil)
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if debug && err == nil {
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l.Debugln("stats.DeviceStatisticsReference.Delete:", s.device, stype)
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}
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if err != nil && err != leveldb.ErrNotFound {
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return err
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}
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}
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return nil
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}
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func (s *DeviceStatisticsReference) GetStatistics() DeviceStatistics {
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return DeviceStatistics{
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LastSeen: s.GetLastSeen(),
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}
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}
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