refactor timecache

* change clock to `atomic.Int64`
* add `once` fields for starter and stopper
* update dependencies

note: go version updated to 1.19

storage/memory/storage.go

@@ -160,10 +160,6 @@ func (ps *peerStore) ScheduleStatisticsCollection(reportInterval time.Duration)
 	}()
 }
 
-func (ps *peerStore) getClock() int64 {
-	return timecache.NowUnixNano()
-}
-
 func (ps *peerStore) shardIndex(infoHash bittorrent.InfoHash, v6 bool) uint32 {
 	// There are twice the amount of shards specified by the user, the first
 	// half is dedicated to IPv4 swarms and the second half is dedicated to
@@ -203,7 +199,7 @@ func (ps *peerStore) PutSeeder(_ context.Context, ih bittorrent.InfoHash, p bitt
 	}
 
 	// Update the peer in the swarm.
-	shard.swarms[ih].seeders[p] = ps.getClock()
+	shard.swarms[ih].seeders[p] = timecache.NowUnixNano()
 
 	return nil
 }
@@ -269,7 +265,7 @@ func (ps *peerStore) PutLeecher(_ context.Context, ih bittorrent.InfoHash, p bit
 	}
 
 	// Update the peer in the swarm.
-	shard.swarms[ih].leechers[p] = ps.getClock()
+	shard.swarms[ih].leechers[p] = timecache.NowUnixNano()
 
 	return nil
 }
@@ -341,7 +337,7 @@ func (ps *peerStore) GraduateLeecher(_ context.Context, ih bittorrent.InfoHash,
 	}
 
 	// Update the peer in the swarm.
-	shard.swarms[ih].seeders[p] = ps.getClock()
+	shard.swarms[ih].seeders[p] = timecache.NowUnixNano()
 
 	return nil
 }

storage/pg/storage.go

@@ -354,7 +354,7 @@ func (s *store) putPeer(ctx context.Context, ih bittorrent.InfoHash, peer bittor
 		Object("peer", peer).
 		Bool("seeder", seeder).
 		Msg("put peer")
-	args := pgx.NamedArgs{
+	_, err = s.Exec(ctx, s.Peer.AddQuery, pgx.NamedArgs{
 		pInfoHash: []byte(ih),
 		pPeerID:   peer.ID[:],
 		pAddress:  net.IP(peer.Addr().AsSlice()),
@@ -362,8 +362,7 @@ func (s *store) putPeer(ctx context.Context, ih bittorrent.InfoHash, peer bittor
 		pSeeder:   seeder,
 		pV6:       peer.Addr().Is6(),
 		pCreated:  timecache.Now(),
-	}
-	_, err = s.Exec(ctx, s.Peer.AddQuery, args)
+	})
 	return
 }