OC-9430: Knife cloud should support endpoint config and cli option

lib/chef/knife/cloud/fog/options.rb

@@ -15,6 +15,11 @@ def self.included(includer)
               :description => "Fog gem version to use. Use the ruby gem version strings",
               :default => "",
               :proc => Proc.new { |v| Chef::Config[:knife][:cloud_fog_version] = v}
+
+            option :api_endpoint,
+              :long => "--api-endpoint ENDPOINT",
+              :description => "Your API endpoint. Eg, for Eucalyptus it can be 'http://ecc.eucalyptus.com:8773/services/Eucalyptus'",
+              :proc => Proc.new { |endpoint| Chef::Config[:knife][:api_endpoint] = endpoint }
           end
         end
 

lib/chef/knife/cloud/fog/service.rb

@@ -29,6 +29,7 @@ def load_fog_gem
         end
 
         def connection
+          add_api_endpoint
           @connection ||= begin
               connection = Fog::Compute.new(@auth_params)
                           rescue Excon::Errors::Unauthorized => e
@@ -116,6 +117,10 @@ def list_images
         def delete_server_on_failure(server = nil)
           server.destroy if ! server.nil?
         end
+
+        def add_api_endpoint
+          raise Chef::Exceptions::Override, "You must override add_api_endpoint in #{self.to_s} to add endpoint in auth_params for connection"
+        end
       end
     end
   end

spec/support/shared_examples_for_service.rb

@@ -4,6 +4,7 @@
 
   describe "#connection" do
     it "creates a connection to fog service." do
+      instance.should_receive(:add_api_endpoint)
       Fog::Compute.should_receive(:new)
       instance.connection
     end

spec/unit/fog_service_spec.rb

@@ -17,6 +17,7 @@
     end
 
     it "creates a connection to fog service with the provided auth params." do
+      instance.should_receive(:add_api_endpoint)
       Fog::Compute.should_receive(:new).with({:provider => 'Any Cloud Provider'})
       instance.connection
     end