1 files changed, 20 insertions, 21 deletions
diff --git a/app/services/compare_service.rb b/app/services/compare_service.rb
index 70f642baaaa..6aa9df4b194 100644
--- a/app/services/compare_service.rb
+++ b/app/services/compare_service.rb
@@ -1,28 +1,27 @@
-require 'securerandom'
-
 # Compare 2 branches for one repo or between repositories
 # and return Gitlab::CompareResult object that responds to commits and diffs
 class CompareService
-  def execute(source_project, source_branch, target_project, target_branch)
-    source_sha = source_project.commit(source_branch).sha
-
-    # If compare with other project we need to fetch ref first
-    unless target_project == source_project
-      random_string = SecureRandom.hex
-
-      target_project.repository.fetch_ref(
-        source_project.repository.path_to_repo,
-        "refs/heads/#{source_branch}",
-        "refs/tmp/#{random_string}/head"
+  def execute(current_user, source_project, source_branch, target_project, target_branch)
+    # Try to compare branches to get commits list and diffs
+    #
+    # Note: Use satellite only when need to compare between two repos
+    # because satellites are slower than operations on bare repo
+    if target_project == source_project
+      Gitlab::CompareResult.new(
+        Gitlab::Git::Compare.new(
+          target_project.repository.raw_repository,
+          target_branch,
+          source_branch,
+        )
       )
-    end
-
-    Gitlab::CompareResult.new(
-      Gitlab::Git::Compare.new(
-        target_project.repository.raw_repository,
+    else
+      Gitlab::Satellite::CompareAction.new(
+        current_user,
+        target_project,
         target_branch,
-        source_sha,
-      )
-    )
+        source_project,
+        source_branch
+      ).result
+    end
   end
 end