Symbolize kyes in config before accessing it

lib/cf/registrar.rb

@@ -18,6 +18,8 @@ class Registrar
     def initialize(config)
       @logger = Steno.logger("cf.registrar")
 
+      config = symbolize_keys(config)
+
       @message_bus_uri = config[:mbus]
       @host = config[:host]
       @port = config[:port]
@@ -120,5 +122,14 @@ def setup_interval(interval)
         send_registration_message
       end
     end
+
+    def symbolize_keys(hash)
+      return hash unless hash.is_a? Hash
+      Hash[
+        hash.each_pair.map do |k, v|
+            [k.to_sym, symbolize_keys(v)]
+        end
+      ]
+    end
   end
 end

spec/unit/registrar_spec.rb

@@ -77,6 +77,13 @@ module Cf
           its(:uuid) { should_not be_nil }
         end
       end
+
+      context "when there are values with String keys" do
+        let(:config) { { "host" => "h", :varz => { "username" => "user" } } }
+
+        its(:host) { should eq "h" }
+        its(:username) { should eq "user" }
+      end
     end
 
     describe "#register_with_router" do