Merge branch 'zj-branch-crud-no-hook' into 'master'

Remove client need for no hook branch CRUD methods.

See merge request gitlab-org/gitlab!19815

lib/gitlab/git/repository.rb

@@ -636,10 +636,9 @@ module Gitlab
       end
 
       # Delete the specified branch from the repository
+      # Note: No Git hooks are executed for this action
       def delete_branch(branch_name)
-        wrapped_gitaly_errors do
-          gitaly_ref_client.delete_branch(branch_name)
-        end
+        write_ref(branch_name, Gitlab::Git::BLANK_SHA)
       rescue CommandError => e
         raise DeleteBranchError, e
       end
@@ -651,14 +650,13 @@ module Gitlab
       end
 
       # Create a new branch named **ref+ based on **stat_point+, HEAD by default
+      # Note: No Git hooks are executed for this action
       #
       # Examples:
       #   create_branch("feature")
       #   create_branch("other-feature", "master")
       def create_branch(ref, start_point = "HEAD")
-        wrapped_gitaly_errors do
-          gitaly_ref_client.create_branch(ref, start_point)
-        end
+        write_ref(ref, start_point)
       end
 
       # If `mirror_refmap` is present the remote is set as mirror with that mapping

lib/gitlab/gitaly_client/ref_service.rb

@@ -151,40 +151,6 @@ module Gitlab
         Gitlab::Git::Branch.new(@repository, encode!(branch.name.dup), branch.target_commit.id, target_commit)
       end
 
-      def create_branch(ref, start_point)
-        request = Gitaly::CreateBranchRequest.new(
-          repository: @gitaly_repo,
-          name: encode_binary(ref),
-          start_point: encode_binary(start_point)
-        )
-
-        response = GitalyClient.call(@repository.storage, :ref_service, :create_branch, request, timeout: GitalyClient.medium_timeout)
-
-        case response.status
-        when :OK
-          branch = response.branch
-          target_commit = Gitlab::Git::Commit.decorate(@repository, branch.target_commit)
-          Gitlab::Git::Branch.new(@repository, branch.name, branch.target_commit.id, target_commit)
-        when :ERR_INVALID
-          invalid_ref!("Invalid ref name")
-        when :ERR_EXISTS
-          invalid_ref!("Branch #{ref} already exists")
-        when :ERR_INVALID_START_POINT
-          invalid_ref!("Invalid reference #{start_point}")
-        else
-          raise "Unknown response status: #{response.status}"
-        end
-      end
-
-      def delete_branch(branch_name)
-        request = Gitaly::DeleteBranchRequest.new(
-          repository: @gitaly_repo,
-          name: encode_binary(branch_name)
-        )
-
-        GitalyClient.call(@repository.storage, :ref_service, :delete_branch, request, timeout: GitalyClient.medium_timeout)
-      end
-
       def delete_refs(refs: [], except_with_prefixes: [])
         request = Gitaly::DeleteRefsRequest.new(
           repository: @gitaly_repo,

spec/features/issues/user_creates_branch_and_merge_request_spec.rb

@@ -187,7 +187,7 @@ describe 'User creates branch and merge request on issue page', :js do
       let(:branch_name) { "#{issue.iid}-foo" }
 
       before do
-        project.repository.create_branch(branch_name, 'master')
+        project.repository.create_branch(branch_name)
 
         visit project_issue_path(project, issue)
       end

spec/features/merge_request/user_resolves_conflicts_spec.rb

@@ -169,8 +169,8 @@ describe 'Merge request > User resolves conflicts', :js do
 
     context "with malicious branch name" do
       let(:bad_branch_name) { "malicious-branch-{{toString.constructor('alert(/xss/)')()}}" }
-      let(:branch) { project.repository.create_branch(bad_branch_name, 'conflict-resolvable') }
-      let(:merge_request) { create_merge_request(branch.name) }
+      let!(:branch) { project.repository.create_branch(bad_branch_name, 'conflict-resolvable') }
+      let(:merge_request) { create_merge_request(bad_branch_name) }
 
       before do
         visit project_merge_request_path(project, merge_request)

spec/features/projects/graph_spec.rb

@@ -60,7 +60,7 @@ describe 'Project Graph', :js do
     let(:branch_name) { '<h1>evil</h1>' }
 
     before do
-      project.repository.create_branch(branch_name, 'master')
+      project.repository.create_branch(branch_name)
 
       visit charts_project_graph_path(project, branch_name)
     end

spec/lib/gitlab/git/repository_spec.rb

@@ -310,8 +310,8 @@ describe Gitlab::Git::Repository, :seed_helper do
 
       with_them do
         before do
-          repository.create_branch('left-branch', 'master')
-          repository.create_branch('right-branch', 'master')
+          repository.create_branch('left-branch')
+          repository.create_branch('right-branch')
 
           left.times do
             new_commit_edit_new_file_on_branch(repository_rugged, 'encoding/CHANGELOG', 'left-branch', 'some more content for a', 'some stuff')
@@ -350,8 +350,8 @@ describe Gitlab::Git::Repository, :seed_helper do
 
       with_them do
         before do
-          repository.create_branch('left-branch', 'master')
-          repository.create_branch('right-branch', 'master')
+          repository.create_branch('left-branch')
+          repository.create_branch('right-branch')
 
           left.times do
             new_commit_edit_new_file_on_branch(repository_rugged, 'encoding/CHANGELOG', 'left-branch', 'some more content for a', 'some stuff')
@@ -420,55 +420,6 @@ describe Gitlab::Git::Repository, :seed_helper do
     end
   end
 
-  describe "#delete_branch" do
-    let(:repository) { mutable_repository }
-
-    after do
-      ensure_seeds
-    end
-
-    it "removes the branch from the repo" do
-      branch_name = "to-be-deleted-soon"
-
-      repository.create_branch(branch_name)
-      expect(repository_rugged.branches[branch_name]).not_to be_nil
-
-      repository.delete_branch(branch_name)
-      expect(repository_rugged.branches[branch_name]).to be_nil
-    end
-
-    context "when branch does not exist" do
-      it "raises a DeleteBranchError exception" do
-        expect { repository.delete_branch("this-branch-does-not-exist") }.to raise_error(Gitlab::Git::Repository::DeleteBranchError)
-      end
-    end
-  end
-
-  describe "#create_branch" do
-    let(:repository) { mutable_repository }
-
-    after do
-      ensure_seeds
-    end
-
-    it "creates a new branch" do
-      expect(repository.create_branch('new_branch', 'master')).not_to be_nil
-    end
-
-    it "creates a new branch with the right name" do
-      expect(repository.create_branch('another_branch', 'master').name).to eq('another_branch')
-    end
-
-    it "fails if we create an existing branch" do
-      repository.create_branch('duplicated_branch', 'master')
-      expect {repository.create_branch('duplicated_branch', 'master')}.to raise_error("Branch duplicated_branch already exists")
-    end
-
-    it "fails if we create a branch from a non existing ref" do
-      expect {repository.create_branch('branch_based_in_wrong_ref', 'master_2_the_revenge')}.to raise_error("Invalid reference master_2_the_revenge")
-    end
-  end
-
   describe '#delete_refs' do
     let(:repository) { mutable_repository }
 
@@ -506,8 +457,8 @@ describe Gitlab::Git::Repository, :seed_helper do
     let(:utf8_branch) { 'branch-é' }
 
     before do
-      repository.create_branch(new_branch, 'master')
-      repository.create_branch(utf8_branch, 'master')
+      repository.create_branch(new_branch)
+      repository.create_branch(utf8_branch)
     end
 
     after do
@@ -609,32 +560,30 @@ describe Gitlab::Git::Repository, :seed_helper do
   describe '#search_files_by_content' do
     let(:repository) { mutable_repository }
     let(:repository_rugged) { mutable_repository_rugged }
+    let(:ref) { 'search-files-by-content-branch' }
+    let(:content) { 'foobarbazmepmep' }
 
     before do
-      repository.create_branch('search-files-by-content-branch', 'master')
-      new_commit_edit_new_file_on_branch(repository_rugged, 'encoding/CHANGELOG', 'search-files-by-content-branch', 'committing something', 'search-files-by-content change')
-      new_commit_edit_new_file_on_branch(repository_rugged, 'anotherfile', 'search-files-by-content-branch', 'committing something', 'search-files-by-content change')
+      repository.create_branch(ref)
+      new_commit_edit_new_file_on_branch(repository_rugged, 'encoding/CHANGELOG', ref, 'committing something', content)
+      new_commit_edit_new_file_on_branch(repository_rugged, 'anotherfile', ref, 'committing something', content)
     end
 
     after do
       ensure_seeds
     end
 
-    shared_examples 'search files by content' do
-      it 'has 2 items' do
-        expect(search_results.size).to eq(2)
-      end
+    subject do
+      repository.search_files_by_content(content, ref)
+    end
 
-      it 'has the correct matching line' do
-        expect(search_results).to contain_exactly("search-files-by-content-branch:encoding/CHANGELOG\u00001\u0000search-files-by-content change\n",
-                                                  "search-files-by-content-branch:anotherfile\u00001\u0000search-files-by-content change\n")
-      end
+    it 'has 2 items' do
+      expect(subject.size).to eq(2)
     end
 
-    it_should_behave_like 'search files by content' do
-      let(:search_results) do
-        repository.search_files_by_content('search-files-by-content', 'search-files-by-content-branch')
-      end
+    it 'has the correct matching line' do
+      expect(subject).to contain_exactly("#{ref}:encoding/CHANGELOG\u00001\u0000#{content}\n",
+                                         "#{ref}:anotherfile\u00001\u0000#{content}\n")
     end
   end
 
@@ -1116,7 +1065,7 @@ describe Gitlab::Git::Repository, :seed_helper do
 
       before do
         create_remote_branch('joe', 'remote_branch', 'master')
-        repository.create_branch('local_branch', 'master')
+        repository.create_branch('local_branch')
       end
 
       after do
@@ -1142,7 +1091,7 @@ describe Gitlab::Git::Repository, :seed_helper do
 
       before do
         create_remote_branch('joe', 'remote_branch', 'master')
-        repository.create_branch('local_branch', 'master')
+        repository.create_branch('local_branch')
       end
 
       after do
@@ -1192,7 +1141,7 @@ describe Gitlab::Git::Repository, :seed_helper do
 
     context 'when no branch names are specified' do
       before do
-        repository.create_branch('identical', 'master')
+        repository.create_branch('identical')
       end
 
       after do
@@ -1303,7 +1252,7 @@ describe Gitlab::Git::Repository, :seed_helper do
       let(:branch_name) { "ʕ•ᴥ•ʔ" }
 
       before do
-        repository.create_branch(branch_name, "master")
+        repository.create_branch(branch_name)
       end
 
       after do
@@ -1447,7 +1396,7 @@ describe Gitlab::Git::Repository, :seed_helper do
 
     before do
       create_remote_branch('joe', 'remote_branch', 'master')
-      repository.create_branch('local_branch', 'master')
+      repository.create_branch('local_branch')
     end
 
     after do

spec/models/push_event_spec.rb

@@ -74,7 +74,7 @@ describe PushEvent do
       create(:push_event_payload, event: event4, ref: 'baz', action: :removed)
       create(:push_event_payload, event: event5, ref: 'baz', ref_type: :tag)
 
-      project.repository.create_branch('bar', 'master')
+      project.repository.create_branch('bar')
 
       create(
         :merge_request,
@@ -83,7 +83,7 @@ describe PushEvent do
         source_branch: 'bar'
       )
 
-      project.repository.create_branch('qux', 'master')
+      project.repository.create_branch('qux')
 
       create(
         :merge_request,