graphdb: pass context to FilterKnownChanIDs

diff --git a/discovery/chan_series.go b/discovery/chan_series.go
index eaebc0b..7ed9bbd 100644
--- a/discovery/chan_series.go
+++ b/discovery/chan_series.go
@@ -215,7 +215,9 @@ func (c *ChanSeries) FilterKnownChanIDs(_ chainhash.Hash,
 	isZombieChan func(time.Time, time.Time) bool) (
 	[]lnwire.ShortChannelID, error) {
 
-	newChanIDs, err := c.graph.FilterKnownChanIDs(superSet, isZombieChan)
+	newChanIDs, err := c.graph.FilterKnownChanIDs(
+		context.TODO(), superSet, isZombieChan,
+	)
 	if err != nil {
 		return nil, err
 	}
diff --git a/graph/db/graph.go b/graph/db/graph.go
index c5213ac..bc3d8ee 100644
--- a/graph/db/graph.go
+++ b/graph/db/graph.go
@@ -514,10 +514,11 @@ func (c *ChannelGraph) PruneGraphNodes() error {
 // words, we perform a set difference of our set of chan ID's and the ones
 // passed in. This method can be used by callers to determine the set of
 // channels another peer knows of that we don't.
-func (c *ChannelGraph) FilterKnownChanIDs(chansInfo []ChannelUpdateInfo,
+func (c *ChannelGraph) FilterKnownChanIDs(ctx context.Context,
+	chansInfo []ChannelUpdateInfo,
 	isZombieChan func(time.Time, time.Time) bool) ([]uint64, error) {
 
-	unknown, knownZombies, err := c.db.FilterKnownChanIDs(chansInfo)
+	unknown, knownZombies, err := c.db.FilterKnownChanIDs(ctx, chansInfo)
 	if err != nil {
 		return nil, err
 	}
@@ -547,7 +548,7 @@ func (c *ChannelGraph) FilterKnownChanIDs(chansInfo []ChannelUpdateInfo,
 		// alive, and we let it be added to the set of IDs to query our
 		// peer for.
 		err := c.db.MarkEdgeLive(
-			context.TODO(), info.ShortChannelID.ToUint64(),
+			ctx, info.ShortChannelID.ToUint64(),
 		)
 		// Since there is a chance that the edge could have been marked
 		// as "live" between the FilterKnownChanIDs call and the
diff --git a/graph/db/graph_test.go b/graph/db/graph_test.go
index 0f2e635..ff06f50 100644
--- a/graph/db/graph_test.go
+++ b/graph/db/graph_test.go
@@ -2976,7 +2976,7 @@ func TestFilterKnownChanIDsZombieRevival(t *testing.T) {
 
 	// Call FilterKnownChanIDs with an isStillZombie call-back that would
 	// result in the current zombies still be considered as zombies.
-	_, err = graph.FilterKnownChanIDs([]ChannelUpdateInfo{
+	_, err = graph.FilterKnownChanIDs(ctx, []ChannelUpdateInfo{
 		{ShortChannelID: scid1},
 		{ShortChannelID: scid2},
 		{ShortChannelID: scid3},
@@ -2992,7 +2992,7 @@ func TestFilterKnownChanIDsZombieRevival(t *testing.T) {
 	// Now call it again but this time with a isStillZombie call-back that
 	// would result in channel with SCID 2 no longer being considered a
 	// zombie.
-	_, err = graph.FilterKnownChanIDs([]ChannelUpdateInfo{
+	_, err = graph.FilterKnownChanIDs(ctx, []ChannelUpdateInfo{
 		{ShortChannelID: scid1},
 		{
 			ShortChannelID:       scid2,
@@ -3038,7 +3038,9 @@ func TestFilterKnownChanIDs(t *testing.T) {
 		{ShortChannelID: scid2},
 		{ShortChannelID: scid3},
 	}
-	filteredIDs, err := graph.FilterKnownChanIDs(preChanIDs, isZombieUpdate)
+	filteredIDs, err := graph.FilterKnownChanIDs(
+		ctx, preChanIDs, isZombieUpdate,
+	)
 	require.NoError(t, err, "unable to filter chan IDs")
 	require.EqualValues(t, []uint64{
 		scid1.ToUint64(),
@@ -3163,7 +3165,7 @@ func TestFilterKnownChanIDs(t *testing.T) {
 
 	for _, queryCase := range queryCases {
 		resp, err := graph.FilterKnownChanIDs(
-			queryCase.queryIDs, isZombieUpdate,
+			ctx, queryCase.queryIDs, isZombieUpdate,
 		)
 		require.NoError(t, err)
 
@@ -3342,7 +3344,7 @@ func TestStressTestChannelGraphAPI(t *testing.T) {
 				}
 
 				_, err := graph.FilterKnownChanIDs(
-					chanIDs,
+					ctx, chanIDs,
 					func(t time.Time, t2 time.Time) bool {
 						return rand.Intn(2) == 0
 					},
diff --git a/graph/db/interfaces.go b/graph/db/interfaces.go
index cdc6df1..edd93a5 100644
--- a/graph/db/interfaces.go
+++ b/graph/db/interfaces.go
@@ -267,8 +267,9 @@ type Store interface { //nolint:interfacebloat
 	// callers to determine the set of channels another peer knows of that
 	// we don't. The ChannelUpdateInfos for the known zombies is also
 	// returned.
-	FilterKnownChanIDs(chansInfo []ChannelUpdateInfo) ([]uint64,
-		[]ChannelUpdateInfo, error)
+	FilterKnownChanIDs(ctx context.Context,
+		chansInfo []ChannelUpdateInfo) ([]uint64, []ChannelUpdateInfo,
+		error)
 
 	// FilterChannelRange returns the channel ID's of all known channels
 	// which were mined in a block height within the passed range. The
diff --git a/graph/db/kv_store.go b/graph/db/kv_store.go
index 2db9f39..2627e1d 100644
--- a/graph/db/kv_store.go
+++ b/graph/db/kv_store.go
@@ -2679,8 +2679,8 @@ func (c *KVStore) NodeUpdatesInHorizon(_ context.Context, startTime,
 // passed in. This method can be used by callers to determine the set of
 // channels another peer knows of that we don't. The ChannelUpdateInfos for the
 // known zombies is also returned.
-func (c *KVStore) FilterKnownChanIDs(chansInfo []ChannelUpdateInfo) ([]uint64,
-	[]ChannelUpdateInfo, error) {
+func (c *KVStore) FilterKnownChanIDs(_ context.Context,
+	chansInfo []ChannelUpdateInfo) ([]uint64, []ChannelUpdateInfo, error) {
 
 	var (
 		newChanIDs   []uint64
diff --git a/graph/db/sql_store.go b/graph/db/sql_store.go
index 2b72c46..6503dc2 100644
--- a/graph/db/sql_store.go
+++ b/graph/db/sql_store.go
@@ -2679,11 +2679,10 @@ func (s *SQLStore) forEachChanWithPoliciesInSCIDList(ctx context.Context,
 // known zombies is also returned.
 //
 // NOTE: part of the Store interface.
-func (s *SQLStore) FilterKnownChanIDs(chansInfo []ChannelUpdateInfo) ([]uint64,
-	[]ChannelUpdateInfo, error) {
+func (s *SQLStore) FilterKnownChanIDs(ctx context.Context,
+	chansInfo []ChannelUpdateInfo) ([]uint64, []ChannelUpdateInfo, error) {
 
 	var (
-		ctx          = context.TODO()
 		newChanIDs   []uint64
 		knownZombies []ChannelUpdateInfo
 		infoLookup   = make(