[misc] provide #providers for shared services

lib/fog/cdn.rb

@@ -19,5 +19,9 @@ module Fog
       end
     end
 
+    def self.providers
+      Fog.services[:cdn]
+    end
+
   end
 end

lib/fog/compute.rb

@@ -55,9 +55,13 @@ module Fog
       end
     end
 
+    def self.providers
+      Fog.services[:compute]
+    end
+
     def self.servers
       servers = []
-      for provider in [:aws, :bluebox, :brightbox, :ecloud, :gogrid, :linode, :newservers, :ninefold, :rackspace, :slicehost, :stormondemand, :virtualbox, :voxel]
+      for provider in self.providers
         begin
           servers.concat(self[provider].servers)
         rescue # ignore any missing credentials/etc

lib/fog/core/provider.rb

@@ -6,7 +6,9 @@ module Fog
     end
 
     def service(new_service, path)
-      services << new_service
+      Fog.services[new_service] ||= []
+      Fog.services[new_service] << self.to_s.split('::').last.downcase.to_sym
+      self.services << new_service
       require File.join('fog', path)
     end
 

lib/fog/core/service.rb

@@ -1,4 +1,9 @@
 module Fog
+
+  def self.services
+    @services ||= {}
+  end
+
   class Service
 
     class Error < Fog::Errors::Error; end

lib/fog/dns.rb

@@ -34,9 +34,13 @@ module Fog
       end
     end
 
+    def self.providers
+      Fog.services[:dns]
+    end
+
     def self.zones
       zones = []
-      for provider in [:aws, :bluebox, :dnsimple, :dnsmadeeasy, :linode, :slicehost, :zerigo]
+      for provider in self.providers
         begin
           zones.concat(self[provider].zones)
         rescue # ignore any missing credentials/etc

lib/fog/storage.rb

@@ -30,7 +30,7 @@ module Fog
 
     def self.directories
       directories = []
-      for provider in [:aws, :google, :local, :ninefold, :rackspace]
+      for provider in self.providers
         begin
           directories.concat(self[provider].directories)
         rescue # ignore any missing credentials/etc
@@ -73,5 +73,9 @@ module Fog
       metadata
     end
 
+    def self.providers
+      Fog.services[:storage]
+    end
+
   end
 end