114 lines
3.0 KiB
Go
114 lines
3.0 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This program is free software: you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by the Free
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// Software Foundation, either version 3 of the License, or (at your option)
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// any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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// more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program. If not, see <http://www.gnu.org/licenses/>.
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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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