routing: rename routing Graph method

In preparation for having the ChannelGraph directly implement the
`routing.Graph` interface, we rename the `ForEachNodeChannel` method to
`ForEachNodeDirectedChannel` since the ChannelGraph already uses the
`ForEachNodeChannel` name and the new name is more appropriate since the
ChannelGraph currently has a `ForEachNodeDirectedChannelTx` method which
passes the same DirectedChannel type to the given call-back.

routing/bandwidth.go

@@ -63,7 +63,7 @@ func newBandwidthManager(graph Graph, sourceNode route.Vertex,
 
 	// First, we'll collect the set of outbound edges from the target
 	// source node and add them to our bandwidth manager's map of channels.
-	err := graph.ForEachNodeChannel(sourceNode,
+	err := graph.ForEachNodeDirectedChannel(sourceNode,
 		func(channel *graphdb.DirectedChannel) error {
 			shortID := lnwire.NewShortChanIDFromInt(
 				channel.ChannelID,

routing/graph.go

@@ -12,9 +12,9 @@ import (
 // Graph is an abstract interface that provides information about nodes and
 // edges to pathfinding.
 type Graph interface {
-	// ForEachNodeChannel calls the callback for every channel of the given
-	// node.
-	ForEachNodeChannel(nodePub route.Vertex,
+	// ForEachNodeDirectedChannel calls the callback for every channel of
+	// the given node.
+	ForEachNodeDirectedChannel(nodePub route.Vertex,
 		cb func(channel *graphdb.DirectedChannel) error) error
 
 	// FetchNodeFeatures returns the features of the given node.

routing/integrated_routing_context_test.go

@@ -391,7 +391,7 @@ func (g *mockGraphSessionChanDB) close() error {
 	return nil
 }
 
-func (g *mockGraphSessionChanDB) ForEachNodeChannel(nodePub route.Vertex,
+func (g *mockGraphSessionChanDB) ForEachNodeDirectedChannel(nodePub route.Vertex,
 	cb func(channel *graphdb.DirectedChannel) error) error {
 
 	return g.graph.ForEachNodeDirectedChannelTx(g.tx, nodePub, cb)

routing/mock_graph_test.go

@@ -165,7 +165,7 @@ func (m *mockGraph) addChannel(id uint64, node1id, node2id byte,
 // forEachNodeChannel calls the callback for every channel of the given node.
 //
 // NOTE: Part of the Graph interface.
-func (m *mockGraph) ForEachNodeChannel(nodePub route.Vertex,
+func (m *mockGraph) ForEachNodeDirectedChannel(nodePub route.Vertex,
 	cb func(channel *graphdb.DirectedChannel) error) error {
 
 	// Look up the mock node.

routing/pathfind.go

@@ -557,7 +557,7 @@ func getOutgoingBalance(node route.Vertex, outgoingChans map[uint64]struct{},
 	}
 
 	// Iterate over all channels of the to node.
-	err := g.ForEachNodeChannel(node, cb)
+	err := g.ForEachNodeDirectedChannel(node, cb)
 	if err != nil {
 		return 0, 0, err
 	}
@@ -1325,7 +1325,7 @@ func processNodeForBlindedPath(g Graph, node route.Vertex,
 
 	// Now, iterate over the node's channels in search for paths to this
 	// node that can be used for blinded paths
-	err = g.ForEachNodeChannel(node,
+	err = g.ForEachNodeDirectedChannel(node,
 		func(channel *graphdb.DirectedChannel) error {
 			// Keep track of how many incoming channels this node
 			// has. We only use a node as an introduction node if it

routing/unified_edges.go

@@ -125,7 +125,7 @@ func (u *nodeEdgeUnifier) addGraphPolicies(g Graph) error {
 	}
 
 	// Iterate over all channels of the to node.
-	return g.ForEachNodeChannel(u.toNode, cb)
+	return g.ForEachNodeDirectedChannel(u.toNode, cb)
 }
 
 // unifiedEdge is the individual channel data that is kept inside an edgeUnifier