Accept force option on commit via API

When `force` is set to `true` and `start_branch` is set, the
branch will be ovewritten with the new commit based on the
`HEAD` of the `start_branch`.

This commit includes changes to update the `gitaly-proto` gem.

1 files changed, 7 insertions, 2 deletions

diff --git a/app/services/commits/create_service.rb b/app/services/commits/create_service.rb
index a3b87c20761..bb34a3d3352 100644
--- a/app/services/commits/create_service.rb
+++ b/app/services/commits/create_service.rb
@@ -11,6 +11,7 @@ module Commits
       @start_project = params[:start_project] || @project
       @start_branch = params[:start_branch]
       @branch_name = params[:branch_name]
+      @force = params[:force] || false
     end
 
     def execute
@@ -42,6 +43,10 @@ module Commits
       @start_branch != @branch_name || @start_project != @project
     end
 
+    def force?
+      !!@force
+    end
+
     def validate!
       validate_permissions!
       validate_on_branch!
@@ -65,13 +70,13 @@ module Commits
     end
 
     def validate_branch_existence!
-      if !project.empty_repo? && different_branch? && repository.branch_exists?(@branch_name)
+      if !project.empty_repo? && different_branch? && repository.branch_exists?(@branch_name) && !force?
         raise_error("A branch called '#{@branch_name}' already exists. Switch to that branch in order to make changes")
       end
     end
 
     def validate_new_branch_name!
-      result = ValidateNewBranchService.new(project, current_user).execute(@branch_name)
+      result = ValidateNewBranchService.new(project, current_user).execute(@branch_name, force: force?)
 
       if result[:status] == :error
         raise_error("Something went wrong when we tried to create '#{@branch_name}' for you: #{result[:message]}")