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# frozen_string_literal: true
require 'fileutils'
require 'spec_helper'
RSpec.describe GitGarbageCollectWorker do
include GitHelpers
let_it_be(:project) { create(:project, :repository) }
let(:shell) { Gitlab::Shell.new }
let!(:lease_uuid) { SecureRandom.uuid }
let!(:lease_key) { "project_housekeeping:#{project.id}" }
let(:params) { [project.id, task, lease_key, lease_uuid] }
subject { described_class.new }
shared_examples 'it calls Gitaly' do
specify do
expect_any_instance_of(Gitlab::GitalyClient::RepositoryService).to receive(gitaly_task)
.and_return(nil)
subject.perform(*params)
end
end
shared_examples 'it updates the project statistics' do
it 'updates the project statistics' do
expect_next_instance_of(Projects::UpdateStatisticsService, project, nil, statistics: [:repository_size, :lfs_objects_size]) do |service|
expect(service).to receive(:execute).and_call_original
end
subject.perform(*params)
end
it 'does nothing if the database is read-only' do
allow(Gitlab::Database).to receive(:read_only?) { true }
expect_any_instance_of(Projects::UpdateStatisticsService).not_to receive(:execute)
subject.perform(*params)
end
end
describe "#perform" do
let(:gitaly_task) { :garbage_collect }
let(:task) { :gc }
context 'with active lease_uuid' do
before do
allow(subject).to receive(:get_lease_uuid).and_return(lease_uuid)
end
it_behaves_like 'it calls Gitaly'
it_behaves_like 'it updates the project statistics'
it "flushes ref caches when the task if 'gc'" do
expect(subject).to receive(:renew_lease).with(lease_key, lease_uuid).and_call_original
expect_any_instance_of(Repository).to receive(:expire_branches_cache).and_call_original
expect_any_instance_of(Repository).to receive(:branch_names).and_call_original
expect_any_instance_of(Repository).to receive(:has_visible_content?).and_call_original
expect_any_instance_of(Gitlab::Git::Repository).to receive(:has_visible_content?).and_call_original
subject.perform(*params)
end
it 'handles gRPC errors' do
expect_any_instance_of(Gitlab::GitalyClient::RepositoryService).to receive(:garbage_collect).and_raise(GRPC::NotFound)
expect { subject.perform(*params) }.to raise_exception(Gitlab::Git::Repository::NoRepository)
end
end
context 'with different lease than the active one' do
before do
allow(subject).to receive(:get_lease_uuid).and_return(SecureRandom.uuid)
end
it 'returns silently' do
expect_any_instance_of(Repository).not_to receive(:expire_branches_cache).and_call_original
expect_any_instance_of(Repository).not_to receive(:branch_names).and_call_original
expect_any_instance_of(Repository).not_to receive(:has_visible_content?).and_call_original
subject.perform(*params)
end
end
context 'with no active lease' do
let(:params) { [project.id] }
before do
allow(subject).to receive(:get_lease_uuid).and_return(false)
end
context 'when is able to get the lease' do
before do
allow(subject).to receive(:try_obtain_lease).and_return(SecureRandom.uuid)
end
it_behaves_like 'it calls Gitaly'
it_behaves_like 'it updates the project statistics'
it "flushes ref caches when the task if 'gc'" do
expect(subject).to receive(:get_lease_uuid).with("git_gc:#{task}:#{project.id}").and_return(false)
expect_any_instance_of(Repository).to receive(:expire_branches_cache).and_call_original
expect_any_instance_of(Repository).to receive(:branch_names).and_call_original
expect_any_instance_of(Repository).to receive(:has_visible_content?).and_call_original
expect_any_instance_of(Gitlab::Git::Repository).to receive(:has_visible_content?).and_call_original
subject.perform(*params)
end
context 'when the repository has joined a pool' do
let!(:pool) { create(:pool_repository, :ready) }
let(:project) { pool.source_project }
it 'ensures the repositories are linked' do
expect_any_instance_of(PoolRepository).to receive(:link_repository).once
subject.perform(*params)
end
end
context 'LFS object garbage collection' do
before do
stub_lfs_setting(enabled: true)
end
let_it_be(:lfs_reference) { create(:lfs_objects_project, project: project) }
let(:lfs_object) { lfs_reference.lfs_object }
it 'cleans up unreferenced LFS objects' do
expect_next_instance_of(Gitlab::Cleanup::OrphanLfsFileReferences) do |svc|
expect(svc.project).to eq(project)
expect(svc.dry_run).to be_falsy
expect(svc).to receive(:run!).and_call_original
end
subject.perform(*params)
expect(project.lfs_objects.reload).not_to include(lfs_object)
end
it 'catches and logs exceptions' do
expect_any_instance_of(Gitlab::Cleanup::OrphanLfsFileReferences)
.to receive(:run!)
.and_raise(/Failed/)
expect(Gitlab::GitLogger).to receive(:warn)
expect(Gitlab::ErrorTracking).to receive(:track_and_raise_for_dev_exception)
subject.perform(*params)
end
it 'does nothing if the database is read-only' do
allow(Gitlab::Database).to receive(:read_only?) { true }
expect_any_instance_of(Gitlab::Cleanup::OrphanLfsFileReferences).not_to receive(:run!)
subject.perform(*params)
expect(project.lfs_objects.reload).to include(lfs_object)
end
end
end
context 'when no lease can be obtained' do
before do
expect(subject).to receive(:try_obtain_lease).and_return(false)
end
it 'returns silently' do
expect(subject).not_to receive(:command)
expect_any_instance_of(Repository).not_to receive(:expire_branches_cache).and_call_original
expect_any_instance_of(Repository).not_to receive(:branch_names).and_call_original
expect_any_instance_of(Repository).not_to receive(:has_visible_content?).and_call_original
subject.perform(*params)
end
end
end
context "repack_full" do
let(:task) { :full_repack }
let(:gitaly_task) { :repack_full }
before do
expect(subject).to receive(:get_lease_uuid).and_return(lease_uuid)
end
it_behaves_like 'it calls Gitaly'
it_behaves_like 'it updates the project statistics'
end
context "pack_refs" do
let(:task) { :pack_refs }
let(:gitaly_task) { :pack_refs }
before do
expect(subject).to receive(:get_lease_uuid).and_return(lease_uuid)
end
it "calls Gitaly" do
expect_any_instance_of(Gitlab::GitalyClient::RefService).to receive(task)
.and_return(nil)
subject.perform(*params)
end
it 'does not update the project statistics' do
expect(Projects::UpdateStatisticsService).not_to receive(:new)
subject.perform(*params)
end
end
context "repack_incremental" do
let(:task) { :incremental_repack }
let(:gitaly_task) { :repack_incremental }
before do
expect(subject).to receive(:get_lease_uuid).and_return(lease_uuid)
end
it_behaves_like 'it calls Gitaly'
it_behaves_like 'it updates the project statistics'
end
shared_examples 'gc tasks' do
before do
allow(subject).to receive(:get_lease_uuid).and_return(lease_uuid)
allow(subject).to receive(:bitmaps_enabled?).and_return(bitmaps_enabled)
end
it 'incremental repack adds a new packfile' do
create_objects(project)
before_packs = packs(project)
expect(before_packs.count).to be >= 1
subject.perform(project.id, 'incremental_repack', lease_key, lease_uuid)
after_packs = packs(project)
# Exactly one new pack should have been created
expect(after_packs.count).to eq(before_packs.count + 1)
# Previously existing packs are still around
expect(before_packs & after_packs).to eq(before_packs)
end
it 'full repack consolidates into 1 packfile' do
create_objects(project)
subject.perform(project.id, 'incremental_repack', lease_key, lease_uuid)
before_packs = packs(project)
expect(before_packs.count).to be >= 2
subject.perform(project.id, 'full_repack', lease_key, lease_uuid)
after_packs = packs(project)
expect(after_packs.count).to eq(1)
# Previously existing packs should be gone now
expect(after_packs - before_packs).to eq(after_packs)
expect(File.exist?(bitmap_path(after_packs.first))).to eq(bitmaps_enabled)
end
it 'gc consolidates into 1 packfile and updates packed-refs' do
create_objects(project)
before_packs = packs(project)
before_packed_refs = packed_refs(project)
expect(before_packs.count).to be >= 1
subject.perform(project.id, 'gc', lease_key, lease_uuid)
after_packed_refs = packed_refs(project)
after_packs = packs(project)
expect(after_packs.count).to eq(1)
# Previously existing packs should be gone now
expect(after_packs - before_packs).to eq(after_packs)
# The packed-refs file should have been updated during 'git gc'
expect(before_packed_refs).not_to eq(after_packed_refs)
expect(File.exist?(bitmap_path(after_packs.first))).to eq(bitmaps_enabled)
end
it 'cleans up repository after finishing' do
expect_any_instance_of(Project).to receive(:cleanup).and_call_original
subject.perform(project.id, 'gc', lease_key, lease_uuid)
end
end
context 'with bitmaps enabled' do
let(:bitmaps_enabled) { true }
include_examples 'gc tasks'
end
context 'with bitmaps disabled' do
let(:bitmaps_enabled) { false }
include_examples 'gc tasks'
end
end
# Create a new commit on a random new branch
def create_objects(project)
rugged = rugged_repo(project.repository)
old_commit = rugged.branches.first.target
new_commit_sha = Rugged::Commit.create(
rugged,
message: "hello world #{SecureRandom.hex(6)}",
author: { email: 'foo@bar', name: 'baz' },
committer: { email: 'foo@bar', name: 'baz' },
tree: old_commit.tree,
parents: [old_commit]
)
rugged.references.create("refs/heads/#{SecureRandom.hex(6)}", new_commit_sha)
end
def packs(project)
Gitlab::GitalyClient::StorageSettings.allow_disk_access do
Dir["#{project.repository.path_to_repo}/objects/pack/*.pack"]
end
end
def packed_refs(project)
path = "#{project.repository.path_to_repo}/packed-refs"
FileUtils.touch(path)
File.read(path)
end
def bitmap_path(pack)
pack.sub(/\.pack\z/, '.bitmap')
end
end
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