If a custom object responds to id method, show the id and class value, instead of showing "[OBJECT]" in error reports

CHANGELOG.md

@@ -18,6 +18,10 @@ Changelog
   | [#602](https://github.com/bugsnag/bugsnag-ruby/pull/602)
   | [#603](https://github.com/bugsnag/bugsnag-ruby/pull/603)
 
+* If a custom object responds to `id` method, show the id and class in error reports
+  | [#531](https://github.com/bugsnag/bugsnag-ruby/pull/531)
+  | [manojmj92](https://github.com/manojmj92)
+
 ### Deprecated
 
 * The `ignore_classes` configuration option has been deprecated in favour of `discard_classes`. `ignore_classes` will be removed in the next major release

lib/bugsnag/cleaner.rb

@@ -7,6 +7,7 @@ class Cleaner
     RECURSION = '[RECURSION]'.freeze
     OBJECT = '[OBJECT]'.freeze
     RAISED = '[RAISED]'.freeze
+    OBJECT_WITH_ID_AND_CLASS = '[OBJECT]: [Class]: %<class_name>s [ID]: %<id>d'.freeze
 
     ##
     # @param configuration [Configuration]
@@ -121,7 +122,12 @@ def traverse_object(obj, seen, scope)
 
         # avoid leaking potentially sensitive data from objects' #inspect output
         if str =~ /#<.*>/
-          OBJECT
+          # Use id of the object if available
+          if obj.respond_to?(:id)
+            format(OBJECT_WITH_ID_AND_CLASS, class_name: obj.class, id: obj.id)
+          else
+            OBJECT
+          end
         else
           clean_string(str)
         end

spec/cleaner_spec.rb

@@ -134,6 +134,17 @@ def to_s
       expect(subject.clean_object(object)).to eq("[RECURSION]")
     end
 
+    it "cleans custom objects to show the id of the object if object responds to id method" do
+      class MacaronWithId
+        def id
+          10
+        end
+      end
+
+      a = MacaronWithId.new
+      expect(subject.clean_object(a)).to eq("[OBJECT]: [Class]: #{a.class.name} [ID]: #{a.id}")
+    end
+
     it "cleans up binary strings properly" do
       if RUBY_VERSION > "1.9"
         obj = "Andr\xc7\xff"