respect both ways of adjacency for selected node

client/app/scripts/charts/nodes-chart.js

@@ -4,6 +4,7 @@ const debug = require('debug')('scope:nodes-chart');
 const React = require('react');
 const timely = require('timely');
 
+const AppStore = require('../stores/app-store');
 const Edge = require('./edge');
 const Naming = require('../constants/naming');
 const NodesLayout = require('./nodes-layout');
@@ -83,7 +84,7 @@ const NodesChart = React.createClass({
 
   renderGraphNodes: function(nodes, scale) {
     const hasSelectedNode = this.props.selectedNodeId && this.props.nodes.has(this.props.selectedNodeId);
-    const adjacency = hasSelectedNode ? this.props.nodes.get(this.props.selectedNodeId).get('adjacency') : null;
+    const adjacency = hasSelectedNode ? AppStore.getAdjacentNodes() : null;
     return _.map(nodes, function(node) {
       const highlighted = _.includes(this.props.highlightedNodeIds, node.id)
         || this.props.selectedNodeId === node.id;
@@ -214,7 +215,7 @@ const NodesChart = React.createClass({
       return;
     }
 
-    const adjacency = this.props.nodes.get(props.selectedNodeId).get('adjacency');
+    const adjacency = AppStore.getAdjacentNodes();
     const adjacentLayoutNodes = [];
 
     adjacency.forEach(function(adjacentId) {

client/app/scripts/stores/app-store.js

@@ -9,6 +9,7 @@ const ActionTypes = require('../constants/action-types');
 const Naming = require('../constants/naming');
 
 const makeOrderedMap = Immutable.OrderedMap;
+const makeSet = Immutable.Set;
 
 // Helpers
 
@@ -44,6 +45,7 @@ function makeNode(node) {
 // Initial values
 
 let activeTopologyOptions = null;
+let adjacentNodes = makeSet();
 let currentTopology = null;
 let currentTopologyId = 'containers';
 let errorUrl = null;
@@ -94,9 +96,19 @@ const AppStore = assign({}, EventEmitter.prototype, {
   },
 
   getAdjacentNodes: function() {
+    adjacentNodes = adjacentNodes.clear();
+
     if (nodes.has(selectedNodeId)) {
-      return nodes.get(selectedNodeId).get('adjacency');
+      adjacentNodes = makeSet(nodes.get(selectedNodeId).get('adjacency'));
+      // fill up set with reverse edges
+      nodes.forEach(function(node, nodeId) {
+        if (node.get('adjacency').includes(selectedNodeId)) {
+          adjacentNodes = adjacentNodes.add(nodeId);
+        }
+      });
     }
+
+    return adjacentNodes;
   },
 
   getCurrentTopology: function() {

client/app/styles/main.less

@@ -210,7 +210,7 @@ body {
 
     .link {
       stroke: @text-secondary-color;
-      stroke-width: 1.5px;
+      stroke-width: 1px;
       fill: none;
       stroke-opacity: 0.5;
     }