mv internal lib

lib/stats/device.go

@@ -0,0 +1,58 @@
+// Copyright (C) 2014 The Syncthing Authors.
+//
+// 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"
+
+	"github.com/syncthing/protocol"
+	"github.com/syncthing/syncthing/lib/db"
+	"github.com/syndtr/goleveldb/leveldb"
+)
+
+type DeviceStatistics struct {
+	LastSeen time.Time `json:"lastSeen"`
+}
+
+type DeviceStatisticsReference struct {
+	ns     *db.NamespacedKV
+	device protocol.DeviceID
+}
+
+func NewDeviceStatisticsReference(ldb *leveldb.DB, device protocol.DeviceID) *DeviceStatisticsReference {
+	prefix := string(db.KeyTypeDeviceStatistic) + device.String()
+	return &DeviceStatisticsReference{
+		ns:     db.NewNamespacedKV(ldb, prefix),
+		device: device,
+	}
+}
+
+func (s *DeviceStatisticsReference) GetLastSeen() time.Time {
+	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 {
+		l.Debugln("stats.DeviceStatisticsReference.GetLastSeen:", s.device, t)
+	}
+	return t
+}
+
+func (s *DeviceStatisticsReference) WasSeen() {
+	if debug {
+		l.Debugln("stats.DeviceStatisticsReference.WasSeen:", s.device)
+	}
+	s.ns.PutTime("lastSeen", time.Now())
+}
+
+func (s *DeviceStatisticsReference) GetStatistics() DeviceStatistics {
+	return DeviceStatistics{
+		LastSeen: s.GetLastSeen(),
+	}
+}