statsd config

lib/flipper/configuration.rb

@@ -54,5 +54,15 @@ def default(&block)
         @default.call
       end
     end
+
+    def statsd
+      require 'flipper/instrumentation/statsd_subscriber'
+      Flipper::Instrumentation::StatsdSubscriber.client
+    end
+
+    def statsd=(client)
+      require "flipper/instrumentation/statsd"
+      Flipper::Instrumentation::StatsdSubscriber.client = client
+    end
   end
 end

spec/flipper/configuration_spec.rb

@@ -30,4 +30,21 @@
       expect(subject.default).to be(instance)
     end
   end
+
+  describe '#statsd' do
+    let(:statsd) { double(Statsd) }
+
+    after do
+      Flipper::Instrumentation::StatsdSubscriber.client = nil
+    end
+
+    it 'returns nil by default' do
+      expect(subject.statsd).to be_nil
+    end
+
+    it 'can be set' do
+      subject.statsd = statsd
+      expect(subject.statsd).to be(statsd)
+    end
+  end
 end

spec/flipper/instrumentation/statsd_subscriber_spec.rb

@@ -1,6 +1,5 @@
 require 'flipper/adapters/instrumented'
 require 'flipper/instrumentation/statsd'
-require 'statsd'
 
 begin
   require 'active_support/isolated_execution_state'

spec/spec_helper.rb

@@ -10,6 +10,7 @@
 Bundler.setup(:default)
 
 require 'debug'
+require 'statsd'
 require 'webmock/rspec'
 WebMock.disable_net_connect!(allow_localhost: true)