Enable gzip compression

lib/google/api_client/gzip.rb

@@ -0,0 +1,28 @@
+require 'faraday'
+require 'zlib'
+ 
+module Google
+  class APIClient
+    class Gzip < Faraday::Response::Middleware
+      include Google::APIClient::Logging
+ 
+      def on_complete(env)
+        encoding = env[:response_headers]['content-encoding'].to_s.downcase
+        case encoding
+        when 'gzip'
+          logger.debug { "Decompressing gzip encoded response (#{env[:body].length} bytes)" }        
+          env[:body] = Zlib::GzipReader.new(StringIO.new(env[:body])).read
+          env[:response_headers].delete('content-encoding')
+          logger.debug { "Decompressed (#{env[:body].length} bytes)" }        
+        when 'deflate'
+          logger.debug{ "Decompressing deflate encoded response (#{env[:body].length} bytes)" }        
+          env[:body] = Zlib::Inflate.inflate(env[:body])
+          env[:response_headers].delete('content-encoding')
+          logger.debug { "Decompressed (#{env[:body].length} bytes)" }        
+        end
+      end
+    end
+  end
+end
+ 
+Faraday::Response.register_middleware :gzip => Google::APIClient::Gzip