syncthing/lib/stats/device.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 http://mozilla.org/MPL/2.0/.
package stats
import (
"time"
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"github.com/syncthing/syncthing/lib/db"
"github.com/syndtr/goleveldb/leveldb"
)
type DeviceStatistics struct {
LastSeen time.Time `json:"lastSeen"`
}
type DeviceStatisticsReference struct {
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ns *db.NamespacedKV
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device string
}
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func NewDeviceStatisticsReference(ldb *leveldb.DB, device string) *DeviceStatisticsReference {
prefix := string(db.KeyTypeDeviceStatistic) + device
return &DeviceStatisticsReference{
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ns: db.NewNamespacedKV(ldb, prefix),
device: device,
}
}
func (s *DeviceStatisticsReference) GetLastSeen() time.Time {
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t, ok := s.ns.Time("lastSeen")
if !ok {
// The default here is 1970-01-01 as opposed to the default
// time.Time{} from s.ns
return time.Unix(0, 0)
}
if debug {
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l.Debugln("stats.DeviceStatisticsReference.GetLastSeen:", s.device, t)
}
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return t
}
func (s *DeviceStatisticsReference) WasSeen() {
if debug {
l.Debugln("stats.DeviceStatisticsReference.WasSeen:", s.device)
}
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s.ns.PutTime("lastSeen", time.Now())
}
func (s *DeviceStatisticsReference) GetStatistics() DeviceStatistics {
return DeviceStatistics{
LastSeen: s.GetLastSeen(),
}
}