1 files changed, 56 insertions, 1 deletions
diff --git a/app/services/git/wiki_push_service.rb b/app/services/git/wiki_push_service.rb
index d4267d4a3c5..8bdbc28f3e8 100644
--- a/app/services/git/wiki_push_service.rb
+++ b/app/services/git/wiki_push_service.rb
@@ -2,8 +2,63 @@
 
 module Git
   class WikiPushService < ::BaseService
+    # Maximum number of change events we will process on any single push
+    MAX_CHANGES = 100
+
     def execute
-      # This is used in EE
+      process_changes
+    end
+
+    private
+
+    def process_changes
+      return unless can_process_wiki_events?
+
+      push_changes.take(MAX_CHANGES).each do |change| # rubocop:disable CodeReuse/ActiveRecord
+        next unless change.page.present?
+
+        response = create_event_for(change)
+        log_error(response.message) if response.error?
+      end
+    end
+
+    def can_process_wiki_events?
+      Feature.enabled?(:wiki_events) && Feature.enabled?(:wiki_events_on_git_push, project)
+    end
+
+    def push_changes
+      default_branch_changes.flat_map do |change|
+        raw_changes(change).map { |raw| Git::WikiPushService::Change.new(wiki, change, raw) }
+      end
+    end
+
+    def raw_changes(change)
+      wiki.repository.raw.raw_changes_between(change[:oldrev], change[:newrev])
+    end
+
+    def wiki
+      project.wiki
+    end
+
+    def create_event_for(change)
+      event_service.execute(change.last_known_slug, change.page, change.event_action)
+    end
+
+    def event_service
+      @event_service ||= WikiPages::EventCreateService.new(current_user)
+    end
+
+    def on_default_branch?(change)
+      project.wiki.default_branch == ::Gitlab::Git.branch_name(change[:ref])
+    end
+
+    # See: [Gitlab::GitPostReceive#changes]
+    def changes
+      params[:changes] || []
+    end
+
+    def default_branch_changes
+      @default_branch_changes ||= changes.select { |change| on_default_branch?(change) }
     end
   end
 end