lib/skylight/probes/excon.rb in skylight-0.3.12 vs lib/skylight/probes/excon.rb in skylight-0.3.13

@@ -1,16 +1,21 @@
 module Skylight
   module Probes
     module Excon
       class Probe
         def install
-          # Don't require until installation since it depends on Excon being loaded
-          require 'skylight/probes/excon/middleware'
+          if defined?(::Excon::Middleware)
+            # Don't require until installation since it depends on Excon being loaded
+            require 'skylight/probes/excon/middleware'
 
-          idx = ::Excon.defaults[:middlewares].index(::Excon::Middleware::Instrumentor)
+            idx = ::Excon.defaults[:middlewares].index(::Excon::Middleware::Instrumentor)
 
-          # TODO: Handle possibility of idx being nil
-          ::Excon.defaults[:middlewares].insert(idx, Skylight::Probes::Excon::Middleware)
+            # TODO: Handle possibility of idx being nil
+            ::Excon.defaults[:middlewares].insert(idx, Skylight::Probes::Excon::Middleware)
+          else
+            puts "[SKYLIGHT] [#{Skylight::VERSION}] The installed version of Excon doesn't " \
+                    "support Middlewares. The Excon probe will be disabled."
+          end
         end
       end
     end
 
     register("Excon", "excon", Excon::Probe.new)
\ No newline at end of file