Sort chains by node count

packages/backend/src/Aggregator.ts

@@ -16,13 +16,15 @@ export default class Aggregator {
     let chain = this.getChain(node.chain);
 
     chain.addNode(node);
+
+    this.feeds.broadcast(Feed.addedChain(chain));
   }
 
   public addFeed(feed: Feed) {
     this.feeds.add(feed);
 
     for (const chain of this.chains.values()) {
-      feed.sendMessage(Feed.addedChain(chain.label));
+      feed.sendMessage(Feed.addedChain(chain));
     }
 
     feed.events.on('subscribe', (label: Types.ChainLabel) => {
@@ -68,7 +70,7 @@ export default class Aggregator {
       this.chains.set(label, chain);
 
       console.log(`New chain: ${label}`);
-      this.feeds.broadcast(Feed.addedChain(label));
+      this.feeds.broadcast(Feed.addedChain(chain));
 
       return chain;
     }

packages/backend/src/Chain.ts

@@ -18,8 +18,8 @@ export default class Chain {
     this.label = label;
   }
 
-  public get nodeCount(): number {
-    return this.nodes.size;
+  public get nodeCount(): Types.NodeCount {
+    return this.nodes.size as Types.NodeCount;
   }
 
   public addNode(node: Node) {

packages/backend/src/Feed.ts

@@ -1,6 +1,7 @@
 import * as WebSocket from 'ws';
 import * as EventEmitter from 'events';
 import Node from './Node';
+import Chain from './Chain';
 import { timestamp, Maybe, FeedMessage, Types, idGenerator } from '@dotstats/common';
 
 const nextId = idGenerator<Types.FeedId>();
@@ -66,10 +67,10 @@ export default class Feed {
     };
   }
 
-  public static addedChain(label: Types.ChainLabel): FeedMessage.Message {
+  public static addedChain(chain: Chain): FeedMessage.Message {
     return {
       action: Actions.AddedChain,
-      payload: label
+      payload: [chain.label, chain.nodeCount]
     };
   }