Limit the number of channels displayed on the index page

config.template.yaml

@@ -66,6 +66,9 @@ http:
   gzip-threshold: 1024
   # Secret used for signed cookies.  Can be anything, but make it unique and hard to guess
   cookie-secret: 'change-me'
+  index:
+    # Maximum number of channels to display on the index page public channel list
+    max-entries: 50
 
 # HTTPS server details
 https:

src/config.js

@@ -34,7 +34,10 @@ var defaults = {
         "max-age": "7d",
         gzip: true,
         "gzip-threshold": 1024,
-        "cookie-secret": "change-me"
+        "cookie-secret": "change-me",
+        index: {
+            "max-entries": 50
+        }
     },
     https: {
         enabled: false,

src/configuration/webconfig.js

@@ -41,6 +41,10 @@ export default class WebConfiguration {
     getCacheTTL() {
         return this.config.cacheTTL;
     }
+
+    getMaxIndexEntries() {
+        return this.config.maxIndexEntries;
+    }
 }
 
 WebConfiguration.fromOldConfig = function (oldConfig) {
@@ -70,5 +74,7 @@ WebConfiguration.fromOldConfig = function (oldConfig) {
 
     config.cacheTTL = oldConfig.get('http.max-age');
 
+    config.maxIndexEntries = oldConfig.get('http.index.max-entries');
+
     return new WebConfiguration(config);
 };

src/web/routes/index.js

@@ -1,6 +1,6 @@
 import { sendJade } from '../jade';
 
-export default function initialize(app, channelIndex) {
+export default function initialize(app, channelIndex, maxEntries) {
     app.get('/', (req, res) => {
         channelIndex.listPublicChannels().then((channels) => {
             channels.sort((a, b) => {
@@ -11,6 +11,8 @@ export default function initialize(app, channelIndex) {
                 return b.usercount - a.usercount;
             });
 
+            channels = channels.slice(0, maxEntries);
+
             sendJade(res, 'index', {
                 channels: channels
             });

src/web/webserver.js

@@ -168,7 +168,7 @@ module.exports = {
         }
 
         require('./routes/channel')(app, ioConfig);
-        require('./routes/index')(app, channelIndex);
+        require('./routes/index')(app, channelIndex, webConfig.getMaxIndexEntries());
         app.get('/sioconfig(.json)?', handleLegacySocketConfig);
         require('./routes/socketconfig')(app, clusterClient);
         app.get('/useragreement', handleUserAgreement);