load custom providers and protocols from deployment repository

Author: christiansmith

boot/passport.js

@@ -4,6 +4,7 @@
 
 var settings  = require('./settings')
   , providers = require('../providers')
+  , protocols = require('../protocols')
   , User      = require('../models/User')
   ;
 
@@ -32,14 +33,11 @@ module.exports = function (passport) {
 
   if (settings.providers) {
     Object.keys(settings.providers).forEach(function (name) {
-      var providerConf   = settings.providers[name]
+      var providerConf = settings.providers[name]
         , provider = ( providers[name] ? providers[name] : providerConf )
-        , protocol = provider.protocol
-        , strategy = require('../protocols/' + protocol)
         ;
 
-      provider.id = name;
-      passport.use(strategy.initialize(provider, providerConf));
+      passport.use(protocols.initialize(name, provider, providerConf));
     });
   }
 

models/index.js

@@ -11,7 +11,7 @@ var fs   = require('fs')
  * Read models directory
  */
 
-var files = fs.readdirSync(path.join('.', 'models'));
+var files = fs.readdirSync(__dirname);
 
 
 /**
@@ -21,7 +21,7 @@ var files = fs.readdirSync(path.join('.', 'models'));
 files.forEach(function (file) {
   if (path.extname(file) === '.js' && file !== 'index.js') {
     var model = path.basename(file, '.js');
-    module.exports[model] = require(path.join('..', 'models', model));
+    module.exports[model] = require(path.join(__dirname, '..', 'models', model));
   }
 });
 

protocols/index.js

@@ -0,0 +1,42 @@
+/**
+ * Module dependencies
+ */
+
+var path = require('path');
+
+
+/**
+ * Initialize
+ */
+
+function initialize (name, provider, config) {
+  var strategy
+    , protocol = provider.protocol
+    ;
+
+  // try to load an officially supported provider
+  try {
+    strategy = require(path.join(__dirname, protocol));
+  } catch (e) {}
+
+  // try to load a custom provider from the deployment repository
+  try {
+    strategy = require(path.join(cwd, 'providers', protocol));
+  } catch (e) {
+    if (!strategy) {
+      throw new Error("Can't find custom protocol: " + protocol);
+    }
+  }
+
+  provider.id = name;
+  return strategy.initialize(provider, config);
+}
+
+
+/**
+ * Exports
+ */
+
+module.exports = {
+  initialize: initialize
+};

providers/index.js

@@ -3,27 +3,37 @@
  */
 
 var fs = require('fs')
+  , cwd = process.cwd()
   , path = require('path')
   , settings = require('../boot/settings')
+  , defaultDirectory = __dirname
+  , customDirectory = path.join(cwd, 'providers')
   ;
 
 
 /**
- * Read providers directory
+ * Load providers
  */
+function loadProviders (dir, files) {
+  files.forEach(function (file) {
+    if (path.extname(file) === '.js' && file !== 'index.js') {
+      var provider = path.basename(file, '.js');
 
-var files = fs.readdirSync(path.join('.', 'providers'));
-
+      try {
+        module.exports[provider] = require(
+          path.join(dir, provider)
+        )(settings);
+      } catch (e) {
+        throw new Error("Can't load " + provider + " provider.");
+      }
+    }
+  });
+}
 
-/**
- * Load providers
- */
+try {
+  loadProviders(defaultDirectory, fs.readdirSync(defaultDirectory));
+} catch (e) {}
 
-files.forEach(function (file) {
-  if (path.extname(file) === '.js' && file !== 'index.js') {
-    var provider = path.basename(file, '.js');
-    module.exports[provider] = require(
-      path.join('..', 'providers', provider)
-    )(settings);
-  }
-});
+try {
+  loadProviders(customDirectory, fs.readdirSync(customDirectory));
+} catch (e) {}