implemented Redis functionality

Gemfile

@@ -19,6 +19,7 @@ gem 'typhoeus'
 
 # for object caching
 gem 'redis'
+gem 'redis-namespace'
 
 # for using 7digital api
 gem '7digital'

Gemfile.lock

@@ -33,8 +33,10 @@ GEM
     activesupport (3.0.5)
     addressable (2.2.6)
     arel (2.0.10)
+    bcrypt-ruby (2.1.4)
     bcrypt-ruby (2.1.4-x86-mingw32)
     builder (2.1.2)
+    daemons (1.0.10)
     devise (1.3.4)
       bcrypt-ruby (~> 2.1.2)
       orm_adapter (~> 0.0.3)
@@ -44,7 +46,7 @@ GEM
     faraday (0.6.1)
       addressable (~> 2.2.4)
       multipart-post (~> 1.1.0)
-      rack (>= 1.1.0, < 2)
+      rack (< 2, >= 1.1.0)
     gem_plugin (0.2.3)
     haml (3.1.2)
     haml-rails (0.3.4)
@@ -64,6 +66,9 @@ GEM
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
     mime-types (1.16)
+    mongrel (1.2.0.pre2)
+      daemons (~> 1.0.10)
+      gem_plugin (~> 0.2.3)
     mongrel (1.2.0.pre2-x86-mingw32)
       gem_plugin (~> 0.2.3)
     multi_json (1.0.3)
@@ -114,6 +119,8 @@ GEM
       thor (~> 0.14.4)
     rake (0.9.2)
     redis (2.2.1)
+    redis-namespace (1.0.3)
+      redis (< 3.0.0)
     ruby-openid (2.1.8)
     ruby-openid-apps-discovery (1.2.0)
       ruby-openid (>= 2.1.7)
@@ -121,6 +128,7 @@ GEM
       sexp_processor (~> 3.0)
     sass (3.1.2)
     sexp_processor (3.0.5)
+    sqlite3 (1.3.3)
     sqlite3 (1.3.3-x86-mingw32)
     sqlite3-ruby (1.3.3)
       sqlite3 (>= 1.3.3)
@@ -139,6 +147,7 @@ GEM
       oauth (>= 0.4.4)
 
 PLATFORMS
+  ruby
   x86-mingw32
 
 DEPENDENCIES
@@ -155,6 +164,7 @@ DEPENDENCIES
   rails (= 3.0.5)
   rake
   redis
+  redis-namespace
   ruby_parser
   sass
   sqlite3

config/initializers/app_config.rb

@@ -1 +1,4 @@
-APP_CONFIG = HashWithIndifferentAccess.new(YAML.load(File.open(File.join(Rails.root, 'config', 'config.yml'))))
+APP_CONFIG = HashWithIndifferentAccess.new(YAML.load(File.open(File.join(Rails.root, 'config', 'config.yml'))))
+
+require "sevendigital"
+$sevendigital_client = Sevendigital::Client.new("config/sevendigital.yml", :country => "US")

config/initializers/redis.rb

@@ -0,0 +1,8 @@
+$redis = Redis.new(:host => 'localhost', :port => 6379)
+
+begin
+  $redis.ping
+  puts "=> Established connection to redis server"
+rescue
+  puts "=> CAUTION: cound not establish connection to redis server! Check settings in initializer!"
+end

config/initializers/sevendigital.rb

@@ -1 +1 @@
-require "sevendigital"
+# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # 

config/routes.rb

@@ -1,16 +1,19 @@
 Nineminutes::Application.routes.draw do
 
-  get "sidebar/index"
-
   get "charts/index"
 
-  devise_for :users, :controllers => { :omniauth_callbacks => "users/omniauth_callbacks" }
+  devise_for :users, 
+    :controllers => { :omniauth_callbacks => "users/omniauth_callbacks", :registrations => "registrations", :sessions => "sessions" }
   devise_scope :user do
-    get '/users/auth/:provider' => 'users/omniauth_callbacks#passthru'
+    get "/users/auth/:provider" => "users/omniauth_callbacks#passthru"
+    get "/register" => "devise_auth/registrations#new",   :as => :new_user_registration
+    post "/users" => "devise_auth/registrations#create",  :as => :user_registration
+    get "/login" => "devise_auth/sessions#new",           :as => :new_user_session
+    post "/login" => "devise_auth/sessions#create",       :as => :user_session
+    get "/logout" => "devise_auth/sessions#destroy",      :as => :destroy_user_session
   end
 
   get "tracks/index"
-  get "artists/get_artists", :as => "get_artists"
   match "/artists/:artist", :to => "artists#show"
   match "/more_tracks", :to => "artists#more_tracks"
   match "/more_albums", :to => "artists#more_albums"
@@ -23,16 +26,11 @@ Nineminutes::Application.routes.draw do
   match "/search_video", :to => "tracks#search_video"
   
   #resources :artists, :constraints => { :id => /.*/ }
-  resources :users
-  resources :sidebar
   resources :search
+  resources :users, :only => [ :show ]
   
   get "home/", :to => "home#show"
-  
   get "charts/", :to => "charts#index"
   
-
-  # You can have the root of your site routed with "root"
-  # just remember to delete public/index.html.
   root :to => "home#index"
 end

lib/last_fm/album.rb

@@ -1,6 +1,7 @@
 module LastFM
   
   class Album < Request
+    
     def self.search query, limit = nil, page = nil
       album_request "search", "albummatches", query, nil, limit, page do |result|
         result = LastFM::Validator.validate_mash result
@@ -11,7 +12,14 @@ module LastFM
   
     # return: album name, artist, (top)tags, tracks ( name, duration (in sec) ) mbid (album), release date, image urls ( different sizes )
     def self.getInfo album, artist
-      album_request "getInfo", "album", album, artist
+      RedisQueryable.look_up_key(:artist, { :hashable => [album, artist] }) do
+        album_request "getInfo", "album", album, artist do |info|
+          info = LastFM::Validator.validate_mash info, "tracks"
+          info = Hashie::Mash.new({ :tracks => [] }) if info.blank?
+          update_results [current_class_name, __method__], info
+          RedisQueryable.store :artist, { :hashable => [album, artist] }, info.to_json
+        end
+      end
     end
   
     # return: tags ( name, tag´s last.fm-url ) ordered by popularity

lib/last_fm/artist.rb

@@ -12,33 +12,51 @@ module LastFM
   
     # return: artist name, tags, similar artists, artist bio (summary / long), mbid, image urls ( different sizes )
     def self.getInfo artist
-      artist_request "getInfo", "artist", artist do |info|
-        info = LastFM::Validator.validate_mash info, "tag", "image"
-        update_results [current_class_name, __method__], info
+      RedisQueryable.look_up_key(:artist, { :hashable => artist, :type => :info }) do
+        artist_request "getInfo", "artist", artist do |info|
+          info = LastFM::Validator.validate_mash info, "tag", "image"
+          update_results [current_class_name, __method__], info
+          RedisQueryable.store :artist, { :hashable => artist, :type => :info }, info.to_json
+        end
       end
     end
-  
+
     # return: artists ( name, mbid, image urls ( different sizes ) )
     def self.getSimilar artist, limit = nil, page = nil
-      artist_request "getSimilar", "similarartists", artist, limit
+      RedisQueryable.look_up_key(:artist, { :hashable => artist, :type => :similar }) do
+        artist_request "getSimilar", "similarartists", artist, limit do |similar|
+          similar = LastFM::Validator.validate_mash similar, "tag", "image"
+          update_results [current_class_name, __method__], similar
+          RedisQueryable.store :artist, { :hashable => artist, :type => :similar }, similar.to_json
+        end
+      end
     end
-  
+
     # return: tags ( name, tag´s last.fm-url ) ordered by popularity
     def self.getTopTags artist
       artist_request "getTopTags", "toptags", artist
     end
-  
+
     # return: tracks ( name, image urls ( different sizes ) ) ordered by popularity
     def self.getTopTracks artist, limit = nil, page = nil
-      artist_request "getTopTracks", "toptracks", artist, limit, page
+      RedisQueryable.look_up_key(:artist, { :hashable => artist, :type => :tracks, :page => page }) do
+        artist_request "getTopTracks", "toptracks", artist, limit, page do |tracks|
+          tracks = LastFM::Validator.validate_mash tracks, "tag", "image"
+          update_results [current_class_name, __method__], tracks
+          RedisQueryable.store :artist, { :hashable => artist, :type => :tracks, :page => page }, tracks.to_json
+        end
+      end
     end
-  
+
     # return: albums ( name, mbid, album url, image urls ( different sizes ) ) ordered by popularity
     def self.getTopAlbums artist, limit = nil, page = nil
-      artist_request "getTopAlbums", "topalbums", artist, limit, page do |albums|
-        albums = LastFM::Validator.validate_mash albums, "album"
-        albums = Hashie::Mash.new({ :album => [] }) if albums.total == "0"
-        update_results [current_class_name, __method__], albums
+      RedisQueryable.look_up_key(:artist, { :hashable => artist, :type => :albums, :page => page }) do
+        artist_request "getTopAlbums", "topalbums", artist, limit, page do |albums|
+          albums = LastFM::Validator.validate_mash albums, "album"
+          albums = Hashie::Mash.new({ :album => [] }) if albums.total == "0"
+          update_results [current_class_name, __method__], albums
+          RedisQueryable.store :artist, { :hashable => artist, :type => :albums, :page => page }, albums.to_json
+        end
       end
     end
     

lib/last_fm/chart.rb

@@ -2,18 +2,25 @@ module LastFM
 
   class Chart < Request
     def self.getTopArtists limit = nil, page = nil
-      chart_request "getTopArtists", "artists", limit, page do |artists|
-        LastFM::Validator.validate_mash artists, "image"
-        update_results [current_class_name, __method__], artists
+      RedisQueryable.look_up_key(:chart, { :type => :artists, :page => page }) do
+        chart_request "getTopArtists", "artists", limit, page do |artists|
+          artists = LastFM::Validator.validate_mash artists, "image"
+          update_results [current_class_name, __method__], artists
+          RedisQueryable.store :chart, { :type => :artists, :page => page }, artists.to_json
+        end
       end
     end
 
     def self.getTopTracks limit = nil, page = nil
-      chart_request "getTopTracks", "tracks", limit, page do |tracks|
-        LastFM::Validator.validate_mash tracks
-        update_results [current_class_name, __method__], tracks
+      RedisQueryable.look_up_key(:chart, { :type => :tracks, :page => page }) do
+        chart_request "getTopTracks", "tracks", limit, page do |tracks|
+          tracks = LastFM::Validator.validate_mash tracks
+          update_results [current_class_name, __method__], tracks
+          RedisQueryable.store :chart, { :type => :tracks, :page => page }, tracks.to_json
+        end
       end
     end
+    
   end
 
 end

lib/redis_queryable.rb

@@ -0,0 +1,53 @@
+module RedisQueryable
+
+  VALID_NAMESPACES = [ :artist, :album, :chart ]
+  EXPIRATION = {
+    :artist => { :tracks => 3, :albums => 7, :similar => 14, :info => 7 }, 
+    :chart => { :tracks => 10, :artists => 10 },
+    :album => 28
+  }
+  
+  def self.store namespace, key_hash, value
+    key = build_key key_hash.values
+    redis = switch_to_namespace namespace
+
+    expires = key_hash.has_key?(:type) ? EXPIRATION[namespace][key_hash[:type]] : EXPIRATION[namespace]
+    redis.setex key, expires.to_i.days, value
+  end
+
+  def self.get namespace, key_hash
+    key = build_key key_hash.values
+    redis = switch_to_namespace namespace
+    json = redis.get key
+    Hashie::Mash.new(JSON.parse(json))
+  end
+  
+  def self.look_up_key namespace, key_hash, &block
+    if exists_key? namespace, key_hash
+      get namespace, key_hash
+    else
+      block.call
+    end
+  end
+  
+  
+  private
+  
+  def self.exists_key? namespace, key_hash
+    key = build_key key_hash.values
+    redis = switch_to_namespace namespace
+    redis.exists key
+  end
+
+  def self.build_key key_array
+    key_array.flatten.map do |value|
+      value.is_a?(String) ? Digest::SHA1.hexdigest(value) : value.to_s
+    end.join(":")
+  end
+
+  def self.switch_to_namespace namespace
+    return Redis::Namespace.new(namespace, :redis => $redis) if VALID_NAMESPACES.include? namespace
+    $redis
+  end
+
+end

public/javascripts/ajax/routes.js

@@ -23,4 +23,28 @@ $(document).ready(function(){
     show_flash(false);
     load_site_request(search_path, this.params['q']);
   });
+
+  // Sign Up Page
+  Path.map(hashbang+register_path).to(function(){
+    show_flash(false);
+    load_site_request(register_path, "");
+  });
+  
+  // Sign In Page
+  Path.map(hashbang+login_path).to(function(){
+    show_flash(false);
+    load_site_request(login_path, "");
+  });
+  
+  // Sign Out Page
+  Path.map(hashbang+logout_path).to(function(){
+    show_flash(false);
+    load_site_request(logout_path, "");
+  });
+  
+  // User Show Page
+  Path.map(hashbang+user_path+":user").to(function(){
+    show_flash(false);
+    load_site_request(user_path, this.params['user']);
+  });
 });

public/javascripts/config.js

@@ -7,6 +7,10 @@ const home_path = "/home";
 const charts_path = "/charts";
 const search_path = "/search/";
 const search_autocomplete_path = "/autocomplete/";
+const user_path = "/users/";
+const register_path = "/register";
+const login_path = "/login";
+const logout_path = "/logout";
 
 $(document).ready(function(){
   Path.root(hashbang+home_path);

public/javascripts/layout.js

@@ -152,7 +152,8 @@ function init_site(link){
       init_autocomplete();
       set_active_navigation(charts_path);
       break;
-      
+    case user_path:
+      init_tabs();
   }
 }