Make the server restart on plugin install

src/ep.json

@@ -1,5 +1,9 @@
 {
   "parts": [
+    { "name": "express", "hooks": {
+      "createServer": "ep_etherpad-lite/node/hooks/express:createServer",
+      "restartServer": "ep_etherpad-lite/node/hooks/express:restartServer"
+      } },
     { "name": "static", "hooks": { "expressCreateServer": "ep_etherpad-lite/node/hooks/express/static:expressCreateServer" } },
     { "name": "specialpages", "hooks": { "expressCreateServer": "ep_etherpad-lite/node/hooks/express/specialpages:expressCreateServer" } },
     { "name": "padurlsanitize", "hooks": { "expressCreateServer": "ep_etherpad-lite/node/hooks/express/padurlsanitize:expressCreateServer" } },

src/node/hooks/express.js

@@ -0,0 +1,62 @@
+var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks");
+var express = require('express');
+var settings = require('../utils/Settings');
+var fs = require('fs');
+var path = require('path');
+var  _ = require("underscore");
+
+var server;
+var serverName;
+
+exports.createServer = function () {
+  //try to get the git version
+  var version = "";
+  try
+  {
+    var rootPath = path.resolve(npm.dir, '..');
+    var ref = fs.readFileSync(rootPath + "/.git/HEAD", "utf-8");
+    var refPath = rootPath + "/.git/" + ref.substring(5, ref.indexOf("\n"));
+    version = fs.readFileSync(refPath, "utf-8");
+    version = version.substring(0, 7);
+    console.log("Your Etherpad Lite git version is " + version);
+  }
+  catch(e) 
+  {
+    console.warn("Can't get git version for server header\n" + e.message)
+  }
+  console.log("Report bugs at https://github.com/Pita/etherpad-lite/issues")
+
+  serverName = "Etherpad-Lite " + version + " (http://j.mp/ep-lite)";
+
+  exports.restartServer();
+
+  console.log("You can access your Etherpad-Lite instance at http://" + settings.ip + ":" + settings.port + "/");
+  if(!_.isEmpty(settings.users)){
+    console.log("The plugin admin page is at http://" + settings.ip + ":" + settings.port + "/admin/plugins");
+  }
+  else{
+    console.warn("Admin username and password not set in settings.json.  To access admin please uncomment and edit 'users' in settings.json");
+  }
+
+}
+
+exports.restartServer = function () {
+  if (server) {
+    console.log("Restarting express server");
+    server.close();
+  }
+
+  server = express.createServer();
+
+  server.use(function (req, res, next) {
+    res.header("Server", serverName);
+    next();
+  });
+
+  server.configure(function() {
+    hooks.callAll("expressConfigure", {"app": server});
+  });
+  hooks.callAll("expressCreateServer", {"app": server});
+
+  server.listen(settings.port, settings.ip);
+}

src/node/hooks/express/webaccess.js

@@ -88,6 +88,8 @@ exports.basicAuth = function (req, res, next) {
   });
 }
 
+var secret = null;
+
 exports.expressConfigure = function (hook_name, args, cb) {
   // If the log level specified in the config file is WARN or ERROR the application server never starts listening to requests as reported in issue #158.
   // Not installing the log4js connect logger when the log level has a higher severity than INFO since it would not log at that level anyway.
@@ -100,10 +102,15 @@ exports.expressConfigure = function (hook_name, args, cb) {
    * name) to a javascript identifier compatible string. Makes code
    * handling it cleaner :) */
 
-  args.app.sessionStore = new express.session.MemoryStore();
+  if (!exports.sessionStore) {
+    exports.sessionStore = new express.session.MemoryStore();
+    secret = randomString(32);
+  }
+
+  args.app.sessionStore = exports.sessionStore;
   args.app.use(express.session({store: args.app.sessionStore,
                                 key: 'express_sid',
-                                secret: apikey = randomString(32)}));
+                                secret: secret}));
 
   args.app.use(exports.basicAuth);
 }

src/node/server.js

@@ -22,36 +22,13 @@
  */
 
 var log4js = require('log4js');
-var fs = require('fs');
 var settings = require('./utils/Settings');
 var db = require('./db/DB');
 var async = require('async');
-var express = require('express');
-var path = require('path');
 var plugins = require("ep_etherpad-lite/static/js/pluginfw/plugins");
 var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks");
 var npm = require("npm/lib/npm.js");
-var  _ = require("underscore");
 
-//try to get the git version
-var version = "";
-try
-{
-  var rootPath = path.resolve(npm.dir, '..');
-  var ref = fs.readFileSync(rootPath + "/.git/HEAD", "utf-8");
-  var refPath = rootPath + "/.git/" + ref.substring(5, ref.indexOf("\n"));
-  version = fs.readFileSync(refPath, "utf-8");
-  version = version.substring(0, 7);
-  console.log("Your Etherpad Lite git version is " + version);
-}
-catch(e) 
-{
-  console.warn("Can't get git version for server header\n" + e.message)
-}
-
-console.log("Report bugs at https://github.com/Pita/etherpad-lite/issues")
-
-var serverName = "Etherpad-Lite " + version + " (http://j.mp/ep-lite)";
 
 //set loglevel
 log4js.setGlobalLogLevel(settings.loglevel);
@@ -75,27 +52,7 @@ async.waterfall([
   //initalize the http server
   function (callback)
   {
-    //create server
+    hooks.callAll("createServer", {});
-    var app = express.createServer();
-
-    app.use(function (req, res, next) {
-      res.header("Server", serverName);
-      next();
-    });
-    
-    app.configure(function() { hooks.callAll("expressConfigure", {"app": app}); });
-    
-    hooks.callAll("expressCreateServer", {"app": app});
-    
-    //let the server listen
-    app.listen(settings.port, settings.ip);
-    console.log("You can access your Etherpad-Lite instance at http://" + settings.ip + ":" + settings.port + "/");
-    if(!_.isEmpty(settings.users)){
-      console.log("The plugin admin page is at http://" + settings.ip + ":" + settings.port + "/admin/plugins");
-    }
-    else{
-      console.warn("Admin username and password not set in settings.json.  To access admin please uncomment and edit 'users' in settings.json");
-    }
     callback(null);  
   }
 ]);

src/static/js/pluginfw/installer.js

@@ -3,7 +3,7 @@ var hooks = require("ep_etherpad-lite/static/js/pluginfw/hooks");
 var npm = require("npm");
 var registry = require("npm/lib/utils/npm-registry-client/index.js");
 
-var withNpm = function (npmfn, cb) {
+var withNpm = function (npmfn, final, cb) {
   npm.load({}, function (er) {
     if (er) return cb({progress:1, error:er});
     npm.on("log", function (message) {
@@ -15,6 +15,7 @@ var withNpm = function (npmfn, cb) {
       data.progress = 1;
       data.message = "Done.";
       cb(data);
+      final();
     });
   });
 }
@@ -36,6 +37,9 @@ exports.uninstall = function(plugin_name, cb) {
         });
       });
     },
+    function () {
+      hooks.aCallAll("restartServer", {}, function () {});                
+    },
     cb
   );
 };
@@ -51,6 +55,9 @@ exports.install = function(plugin_name, cb) {
         });
       });
     },
+    function () {
+      hooks.aCallAll("restartServer", {}, function () {});                
+    },
     cb
   );
 };
@@ -93,6 +100,7 @@ exports.search = function(query, cache, cb) {
         }
       );
     },
+    function () { },
     cb
   );
 };