API: Ability to cherry-pick a commit

1 files changed, 35 insertions, 1 deletions

diff --git a/lib/api/commits.rb b/lib/api/commits.rb
index 2670a2d413a..cf2489dbb67 100644
--- a/lib/api/commits.rb
+++ b/lib/api/commits.rb
@@ -1,7 +1,6 @@
 require 'mime/types'
 
 module API
-  # Projects commits API
   class Commits < Grape::API
     include PaginationParams
 
@@ -121,6 +120,41 @@ module API
         present paginate(notes), with: Entities::CommitNote
       end
 
+      desc 'Cherry pick commit into a branch' do
+        detail 'This feature was introduced in GitLab 8.15'
+        success Entities::RepoCommit
+      end
+      params do
+        requires :sha, type: String, desc: 'A commit sha to be cherry picked'
+        requires :branch, type: String, desc: 'The name of the branch'
+      end
+      post ':id/repository/commits/:sha/cherry_pick' do
+        authorize! :push_code, user_project
+
+        commit = user_project.commit(params[:sha])
+        not_found!('Commit') unless commit
+
+        branch = user_project.repository.find_branch(params[:branch])
+        not_found!('Branch') unless branch
+
+        commit_params = {
+          commit: commit,
+          create_merge_request: false,
+          source_project: user_project,
+          source_branch: commit.cherry_pick_branch_name,
+          target_branch: params[:branch]
+        }
+
+        result = ::Commits::CherryPickService.new(user_project, current_user, commit_params).execute
+
+        if result[:status] == :success
+          branch = user_project.repository.find_branch(params[:branch])
+          present user_project.repository.commit(branch.dereferenced_target), with: Entities::RepoCommit
+        else
+          render_api_error!(result[:message], 400)
+        end
+      end
+
       desc 'Post comment to commit' do
         success Entities::CommitNote
       end