Add rake task to check the upgrade for orphaned overrides

lib/jsonapi-resources.rb

@@ -1,3 +1,4 @@
+require 'jsonapi/resources/railtie'
 require 'jsonapi/naive_cache'
 require 'jsonapi/compiled_json'
 require 'jsonapi/resource'

lib/jsonapi/resources/railtie.rb

@@ -0,0 +1,9 @@
+module JSONAPI
+  module Resources
+    class Railtie < Rails::Railtie
+      rake_tasks do
+        load 'tasks/check_upgrade.rake'
+      end
+    end
+  end
+end

lib/tasks/check_upgrade.rake

@@ -0,0 +1,52 @@
+require 'rake'
+require 'jsonapi-resources'
+
+namespace :jsonapi do
+  namespace :resources do
+    desc 'Checks application for orphaned overrides'
+    task :check_upgrade => :environment do
+      Rails.application.eager_load!
+
+      resource_klasses = ObjectSpace.each_object(Class).select { |klass| klass < JSONAPI::Resource}
+
+      puts "Checking #{resource_klasses.count} resources"
+
+      issues_found = 0
+
+      klasses_with_deprecated = resource_klasses.select { |klass| klass.methods.include?(:find_records) }
+      unless klasses_with_deprecated.empty?
+        puts "  Found the following resources the still implement `find_records`:"
+        klasses_with_deprecated.each { |klass| puts "    #{klass}"}
+        puts "  The `find_records` method is no longer called by JR. Please review and ensure your functionality is ported over."
+
+        issues_found = issues_found + klasses_with_deprecated.length
+      end
+
+      klasses_with_deprecated = resource_klasses.select { |klass| klass.methods.include?(:records_for) }
+      unless klasses_with_deprecated.empty?
+        puts "  Found the following resources the still implement `records_for`:"
+        klasses_with_deprecated.each { |klass| puts "    #{klass}"}
+        puts "  The `records_for` method is no longer called by JR. Please review and ensure your functionality is ported over."
+
+        issues_found = issues_found + klasses_with_deprecated.length
+      end
+
+      klasses_with_deprecated = resource_klasses.select { |klass| klass.methods.include?(:apply_includes) }
+      unless klasses_with_deprecated.empty?
+        puts "  Found the following resources the still implement `apply_includes`:"
+        klasses_with_deprecated.each { |klass| puts "    #{klass}"}
+        puts "  The `apply_includes` method is no longer called by JR. Please review and ensure your functionality is ported over."
+
+        issues_found = issues_found + klasses_with_deprecated.length
+      end
+
+      if issues_found > 0
+        puts "Finished inspection. #{issues_found} issues found that may impact upgrading. Please address these issues. "
+      else
+        puts "Finished inspection with no issues found. Note this is only a cursory check for method overrides that will no \n" \
+             "longer be called by JSONAPI::Resources. This check in no way assures your code will continue to function as \n" \
+             "it did before the upgrade. Please do adequate testing before using in production."
+      end
+    end
+  end
+end