Clear template cache on /reload (#734)

package.json

@@ -2,7 +2,7 @@
   "author": "Calvin Montgomery",
   "name": "CyTube",
   "description": "Online media synchronizer and chat",
-  "version": "3.55.1",
+  "version": "3.55.2",
   "repository": {
     "url": "http://github.com/calzoneman/sync"
   },

src/main.js

@@ -30,6 +30,7 @@ function handleLine(line) {
     if (line === '/reload') {
         LOGGER.info('Reloading config');
         Config.load('config.yaml');
+        require('./web/pug').clearCache();
     } else if (line.indexOf('/switch') === 0) {
         const args = line.split(' ');
         args.shift();
@@ -124,7 +125,19 @@ if (Config.get('service-socket.enabled')) {
     LOGGER.info('Opening service socket');
     const ServiceSocket = require('./servsock');
     const sock = new ServiceSocket();
-    sock.init(handleLine, Config.get('service-socket.socket'));
+    sock.init(
+        line => {
+            try {
+                handleLine(line);
+            } catch (error) {
+                LOGGER.error(
+                    'Error in UNIX socket command handler: %s',
+                    error.stack
+                );
+            }
+        },
+        Config.get('service-socket.socket')
+    );
 }
 
 let stdinbuf = '';
@@ -133,7 +146,11 @@ process.stdin.on('data', function (data) {
     if (stdinbuf.indexOf('\n') !== -1) {
         let line = stdinbuf.substring(0, stdinbuf.indexOf('\n'));
         stdinbuf = stdinbuf.substring(stdinbuf.indexOf('\n') + 1);
-        handleLine(line);
+        try {
+            handleLine(line);
+        } catch (error) {
+            LOGGER.error('Command line input handler failed: %s', error.stack);
+        }
     }
 });
 

src/web/pug.js

@@ -3,7 +3,9 @@ var fs = require("fs");
 var path = require("path");
 var Config = require("../config");
 var templates = path.join(__dirname, "..", "..", "templates");
-var cache = {};
+
+const cache = new Map();
+const LOGGER = require('@calzoneman/jsli')('web/pug');
 
 /**
  * Merges locals with globals for pug rendering
@@ -42,16 +44,21 @@ function sendPug(res, view, locals) {
     locals.loginName = nvl(locals.loginName, res.locals.loginName);
     locals.superadmin = nvl(locals.superadmin, res.locals.superadmin);
 
-    if (!(view in cache) || Config.get("debug")) {
+    let renderFn = cache.get(view);
+
+    if (!renderFn || Config.get("debug")) {
+        LOGGER.debug("Loading template %s", view);
+
         var file = path.join(templates, view + ".pug");
-        var fn = pug.compile(fs.readFileSync(file), {
+        renderFn = pug.compile(fs.readFileSync(file), {
             filename: file,
             pretty: !Config.get("http.minify")
         });
-        cache[view] = fn;
+
+        cache.set(view, renderFn);
     }
-    var html = cache[view](merge(locals, res));
-    res.send(html);
+
+    res.send(renderFn(merge(locals, res)));
 }
 
 function nvl(a, b) {
@@ -59,6 +66,18 @@ function nvl(a, b) {
     return a;
 }
 
+function clearCache() {
+    let removed = 0;
+
+    for (const key of cache.keys()) {
+        cache.delete(key);
+        removed++;
+    }
+
+    LOGGER.info('Removed %d compiled templates from the cache', removed);
+}
+
 module.exports = {
-    sendPug: sendPug
+    sendPug: sendPug,
+    clearCache: clearCache
 };