Added error handler for Rollbar

Gemfile

@@ -24,6 +24,7 @@ group :development, :test do
   gem "coveralls", "~> 0.8.15", require: false
   gem "newrelic_rpm"
   gem "airbrake", "~> 9.0"
+  gem "rollbar"
 end
 
 group :development, :darwin do

lib/hutch/error_handlers.rb

@@ -4,5 +4,6 @@ module ErrorHandlers
     autoload :Sentry,      'hutch/error_handlers/sentry'
     autoload :Honeybadger, 'hutch/error_handlers/honeybadger'
     autoload :Airbrake,    'hutch/error_handlers/airbrake'
+    autoload :Rollbar,     'hutch/error_handlers/rollbar'
   end
 end

lib/hutch/error_handlers/rollbar.rb

@@ -0,0 +1,28 @@
+require 'hutch/logging'
+require 'rollbar'
+require 'hutch/error_handlers/base'
+
+module Hutch
+  module ErrorHandlers
+    class Rollbar < Base
+      def handle(properties, payload, consumer, ex)
+        message_id = properties.message_id
+        prefix = "message(#{message_id || '-'}):"
+        logger.error "#{prefix} Logging event to Rollbar"
+        logger.error "#{prefix} #{ex.class} - #{ex.message}"
+
+        ::Rollbar.error(ex,
+          payload: payload,
+          consumer: consumer
+        )
+      end
+
+      def handle_setup_exception(ex)
+        logger.error "Logging setup exception to Rollbar"
+        logger.error "#{ex.class} - #{ex.message}"
+
+        ::Rollbar.error(ex)
+      end
+    end
+  end
+end

spec/hutch/error_handlers/rollbar_spec.rb

@@ -0,0 +1,45 @@
+require 'spec_helper'
+
+describe Hutch::ErrorHandlers::Rollbar do
+  let(:error_handler) { Hutch::ErrorHandlers::Rollbar.new }
+
+  describe '#handle' do
+    let(:error) do
+      begin
+        raise "Stuff went wrong"
+      rescue RuntimeError => err
+        err
+      end
+    end
+
+    it "logs the error to Rollbar" do
+      message_id = "1"
+      properties = OpenStruct.new(message_id: message_id)
+      payload = "{}"
+      consumer = double
+      ex = error
+      message = {
+        payload: payload,
+        consumer: consumer
+      }
+      expect(::Rollbar).to receive(:error).with(ex, message)
+      error_handler.handle(properties, payload, consumer, ex)
+    end
+  end
+
+  describe '#handle_setup_exception' do
+    let(:error) do
+      begin
+        raise "Stuff went wrong"
+      rescue RuntimeError => err
+        err
+      end
+    end
+
+    it "logs the error to Rollbar" do
+      ex = error
+      expect(::Rollbar).to receive(:error).with(ex)
+      error_handler.handle_setup_exception(ex)
+    end
+  end
+end