Merge pull request #109 from seejohnrun/rate_limiting

Added user-configurable rate limiting

README.md

@@ -46,6 +46,16 @@ STDOUT.  Check the README there for more details and usages.
 * `storage` - storage options (see below)
 * `logging` - logging preferences
 * `keyGenerator` - key generator options (see below)
+* `rateLimits` - settings for rate limiting (see below)
+
+## Rate Limiting
+
+When present, the `rateLimits` option enables built-in rate limiting courtesy
+of `connect-ratelimit`.  Any of the options supported by that library can be
+used and set in `config.json`.
+
+See the README for [connect-ratelimit](https://github.com/dharmafly/connect-ratelimit)
+for more information!
 
 ## Key Generation
 

config.js

@@ -23,6 +23,15 @@
     "type": "phonetic"
   },
 
+  "rateLimits": {
+    "categories": {
+      "normal": {
+        "totalRequests": 500,
+        "every": 60000
+      }
+    }
+  },
+
   "storage": {
     "type": "redis",
     "host": "0.0.0.0",

package.json

@@ -14,8 +14,11 @@
   },
   "main": "haste",
   "dependencies": {
+    "connect-ratelimit": "0.0.7",
+    "connect-route": "0.1.5",
+    "connect": "3.4.1",
+    "st": "1.1.0",
     "winston": "0.6.2",
-    "connect": "1.9.2",
     "redis-url": "0.1.0",
     "redis": "0.8.1",
     "uglify-js": "1.3.3",

server.js

@@ -4,6 +4,9 @@ var fs = require('fs');
 
 var winston = require('winston');
 var connect = require('connect');
+var route = require('connect-route');
+var connect_st = require('st');
+var connect_rate_limit = require('connect-ratelimit');
 
 var DocumentHandler = require('./lib/document_handler');
 
@@ -99,22 +102,28 @@ var documentHandler = new DocumentHandler({
   keyGenerator: keyGenerator
 });
 
-// Set the server up with a static cache
+var app = connect();
-connect.createServer(
+
-  // First look for api calls
+// Rate limit all requests
-  connect.router(function(app) {
+if (config.rateLimits) {
+  config.rateLimits.end = true;
+  app.use(connect_rate_limit(config.rateLimits));
+}
+
+// first look at API calls
+app.use(route(function(router) {
   // get raw documents - support getting with extension
-    app.get('/raw/:id', function(request, response, next) {
+  router.get('/raw/:id', function(request, response, next) {
     var skipExpire = !!config.documents[request.params.id];
     var key = request.params.id.split('.')[0];
     return documentHandler.handleRawGet(key, response, skipExpire);
   });
   // add documents
-    app.post('/documents', function(request, response, next) {
+  router.post('/documents', function(request, response, next) {
     return documentHandler.handlePost(request, response);
   });
   // get documents
-    app.get('/documents/:id', function(request, response, next) {
+  router.get('/documents/:id', function(request, response, next) {
     var skipExpire = !!config.documents[request.params.id];
     return documentHandler.handleGet(
       request.params.id,
@@ -122,19 +131,32 @@ connect.createServer(
       skipExpire
     );
   });
-  }),
+}));
-  // Otherwise, static
+
-  connect.staticCache(),
+// Otherwise, try to match static files
-  connect.static(__dirname + '/static', { maxAge: config.staticMaxAge }),
+app.use(connect_st({
-  // Then we can loop back - and everything else should be a token,
+  path: __dirname + '/static',
-  // so route it back to /index.html
+  content: { maxAge: config.staticMaxAge },
-  connect.router(function(app) {
+  passthrough: true,
-    app.get('/:id', function(request, response, next) {
+  index: false
-      request.url = request.originalUrl = '/index.html';
+}));
+
+// Then we can loop back - and everything else should be a token,
+// so route it back to /
+app.use(route(function(router) {
+  router.get('/:id', function(request, response, next) {
+    request.sturl = '/';
     next();
   });
-  }),
+}));
-  connect.static(__dirname + '/static', { maxAge: config.staticMaxAge })
+
-).listen(config.port, config.host);
+// And match index
+app.use(connect_st({
+  path: __dirname + '/static',
+  content: { maxAge: config.staticMaxAge },
+  index: 'index.html'
+}));
+
+http.createServer(app).listen(config.port, config.host);
 
 winston.info('listening on ' + config.host + ':' + config.port);