diff options
author | Oswaldo Ferreira <oswaldo@gitlab.com> | 2019-05-22 00:14:22 +0300 |
---|---|---|
committer | Oswaldo Ferreira <oswaldo@gitlab.com> | 2019-06-20 17:48:30 +0300 |
commit | 3af348b6cf28ef1d9d3025f7012049132b57798c (patch) | |
tree | 540b724d6b711e3d2247dad5c371b54ec81ea610 | |
parent | c6eb18ee0fe1b887438da87f25fc2f2a852dd393 (diff) |
Automatically update MR merge-ref along merge status
This couples the code that transitions the `MergeRequest#merge_status`
and refs/merge-requests/:iid/merge ref update.
In general, instead of directly telling `MergeToRefService` to update
the merge ref, we should rely on `MergeabilityCheckService` to keep
both the merge status and merge ref synced. Now, if the merge_status is
`can_be_merged` it means the merge-ref is also updated to the latest.
We've also updated the logic to be more systematic and less user-based.
-rw-r--r-- | GITALY_SERVER_VERSION | 2 | ||||
-rw-r--r-- | app/controllers/projects/merge_requests_controller.rb | 6 | ||||
-rw-r--r-- | app/models/merge_request.rb | 40 | ||||
-rw-r--r-- | app/services/merge_requests/merge_to_ref_service.rb | 20 | ||||
-rw-r--r-- | app/services/merge_requests/mergeability_check_service.rb | 96 | ||||
-rw-r--r-- | app/services/service_response.rb | 15 | ||||
-rw-r--r-- | changelogs/unreleased/osw-sync-merge-ref-upon-mergeability-check.yml | 5 | ||||
-rw-r--r-- | db/post_migrate/20190620112608_enqueue_reset_merge_status_second_run.rb | 25 | ||||
-rw-r--r-- | db/schema.rb | 2 | ||||
-rw-r--r-- | doc/api/merge_requests.md | 20 | ||||
-rw-r--r-- | lib/api/entities.rb | 2 | ||||
-rw-r--r-- | lib/api/merge_requests.rb | 24 | ||||
-rw-r--r-- | spec/migrations/enqueue_reset_merge_status_second_run_spec.rb | 52 | ||||
-rw-r--r-- | spec/models/merge_request_spec.rb | 87 | ||||
-rw-r--r-- | spec/requests/api/merge_requests_spec.rb | 80 | ||||
-rw-r--r-- | spec/services/merge_requests/merge_to_ref_service_spec.rb | 47 | ||||
-rw-r--r-- | spec/services/merge_requests/mergeability_check_service_spec.rb | 218 | ||||
-rw-r--r-- | spec/services/service_response_spec.rb | 16 |
18 files changed, 538 insertions, 219 deletions
diff --git a/GITALY_SERVER_VERSION b/GITALY_SERVER_VERSION index 21998d3c2d9..9db5ea12f52 100644 --- a/GITALY_SERVER_VERSION +++ b/GITALY_SERVER_VERSION @@ -1 +1 @@ -1.47.0 +1.48.0 diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb index 9e7e3ed5afb..58b1f0196fa 100644 --- a/app/controllers/projects/merge_requests_controller.rb +++ b/app/controllers/projects/merge_requests_controller.rb @@ -33,7 +33,7 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo def show close_merge_request_if_no_source_project - mark_merge_request_mergeable + @merge_request.check_mergeability respond_to do |format| format.html do @@ -251,10 +251,6 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo @merge_request.has_no_commits? && !@merge_request.target_branch_exists? end - def mark_merge_request_mergeable - @merge_request.check_if_can_be_merged - end - def merge! # Disable the CI check if auto_merge_strategy is specified since we have # to wait until CI completes to know diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb index f07636e8f77..f12b44ec0c9 100644 --- a/app/models/merge_request.rb +++ b/app/models/merge_request.rb @@ -231,6 +231,10 @@ class MergeRequest < ApplicationRecord end end + def merge_ref_auto_sync_enabled? + Feature.enabled?(:merge_ref_auto_sync, project, default_enabled: true) + end + # Use this method whenever you need to make sure the head_pipeline is synced with the # branch head commit, for example checking if a merge request can be merged. # For more information check: https://gitlab.com/gitlab-org/gitlab-ce/issues/40004 @@ -725,19 +729,16 @@ class MergeRequest < ApplicationRecord MergeRequests::ReloadDiffsService.new(self, current_user).execute end - # rubocop: enable CodeReuse/ServiceClass - - def check_if_can_be_merged - return unless self.class.state_machines[:merge_status].check_state?(merge_status) && Gitlab::Database.read_write? - can_be_merged = - !broken? && project.repository.can_be_merged?(diff_head_sha, target_branch) + def check_mergeability + MergeRequests::MergeabilityCheckService.new(self).execute + end + # rubocop: enable CodeReuse/ServiceClass - if can_be_merged - mark_as_mergeable - else - mark_as_unmergeable - end + # Returns boolean indicating the merge_status should be rechecked in order to + # switch to either can_be_merged or cannot_be_merged. + def recheck_merge_status? + self.class.state_machines[:merge_status].check_state?(merge_status) end def merge_event @@ -763,7 +764,7 @@ class MergeRequest < ApplicationRecord def mergeable?(skip_ci_check: false) return false unless mergeable_state?(skip_ci_check: skip_ci_check) - check_if_can_be_merged + check_mergeability can_be_merged? && !should_be_rebased? end @@ -778,15 +779,6 @@ class MergeRequest < ApplicationRecord true end - def mergeable_to_ref? - return false unless mergeable_state?(skip_ci_check: true, skip_discussions_check: true) - - # Given the `merge_ref_path` will have the same - # state the `target_branch` would have. Ideally - # we need to check if it can be merged to it. - project.repository.can_be_merged?(diff_head_sha, target_branch) - end - def ff_merge_possible? project.repository.ancestor?(target_branch_sha, diff_head_sha) end @@ -1099,6 +1091,12 @@ class MergeRequest < ApplicationRecord target_project.repository.fetch_source_branch!(source_project.repository, source_branch, ref_path) end + # Returns the current merge-ref HEAD commit. + # + def merge_ref_head + project.repository.commit(merge_ref_path) + end + def ref_path "refs/#{Repository::REF_MERGE_REQUEST}/#{iid}/head" end diff --git a/app/services/merge_requests/merge_to_ref_service.rb b/app/services/merge_requests/merge_to_ref_service.rb index 87147d90c32..efe4dcd6255 100644 --- a/app/services/merge_requests/merge_to_ref_service.rb +++ b/app/services/merge_requests/merge_to_ref_service.rb @@ -11,6 +11,8 @@ module MergeRequests # be executed regardless of the `target_ref` current state). # class MergeToRefService < MergeRequests::MergeBaseService + extend ::Gitlab::Utils::Override + def execute(merge_request) @merge_request = merge_request @@ -26,14 +28,18 @@ module MergeRequests success(commit_id: commit.id, target_id: target_id, source_id: source_id) - rescue MergeError => error + rescue MergeError, ArgumentError => error error(error.message) end private + override :source + def source + merge_request.diff_head_sha + end + def validate! - authorization_check! error_check! end @@ -43,21 +49,13 @@ module MergeRequests error = if !hooks_validation_pass?(merge_request) hooks_validation_error(merge_request) - elsif !@merge_request.mergeable_to_ref? - "Merge request is not mergeable to #{target_ref}" - elsif !source + elsif source.blank? 'No source for merge' end raise_error(error) if error end - def authorization_check! - unless Ability.allowed?(current_user, :admin_merge_request, project) - raise_error("You are not allowed to merge to this ref") - end - end - def target_ref merge_request.merge_ref_path end diff --git a/app/services/merge_requests/mergeability_check_service.rb b/app/services/merge_requests/mergeability_check_service.rb new file mode 100644 index 00000000000..a8b2cdd64d2 --- /dev/null +++ b/app/services/merge_requests/mergeability_check_service.rb @@ -0,0 +1,96 @@ +# frozen_string_literal: true + +module MergeRequests + class MergeabilityCheckService < ::BaseService + include Gitlab::Utils::StrongMemoize + + delegate :project, :merge_ref_auto_sync_enabled?, to: :@merge_request + delegate :repository, to: :project + + def initialize(merge_request) + @merge_request = merge_request + end + + # Updates the MR merge_status. Whenever it switches to a can_be_merged state, + # the merge-ref is refreshed. + # + # recheck - When given, it'll enforce a merge-ref refresh if the current merge_status is + # can_be_merged or cannot_be_merged. + # Given MergeRequests::RefreshService is called async, it might happen that the target + # branch gets updated, but the MergeRequest#merge_status lags behind. So in scenarios + # where we need the current state of the merge ref in repository, the `recheck` + # argument is required. + # + # Returns a ServiceResponse indicating merge_status is/became can_be_merged + # and the merge-ref is synced. Success in case of being/becoming mergeable, + # error otherwise. + def execute(recheck: false) + return ServiceResponse.error(message: 'Invalid argument') unless merge_request + return ServiceResponse.error(message: 'Unsupported operation') if Gitlab::Database.read_only? + + recheck! if recheck + update_merge_status + + unless merge_request.can_be_merged? + return ServiceResponse.error(message: 'Merge request is not mergeable') + end + + unless merge_ref_auto_sync_enabled? + return ServiceResponse.error(message: 'Merge ref is outdated due to disabled feature') + end + + ServiceResponse.success(payload: payload) + end + + private + + attr_reader :merge_request + + def payload + strong_memoize(:payload) do + { + merge_ref_head: merge_ref_head_payload + } + end + end + + def merge_ref_head_payload + commit = merge_request.merge_ref_head + + return unless commit + + target_id, source_id = commit.parent_ids + + { + commit_id: commit.id, + source_id: source_id, + target_id: target_id + } + end + + def update_merge_status + return unless merge_request.recheck_merge_status? + + if can_git_merge? && merge_to_ref + merge_request.mark_as_mergeable + else + merge_request.mark_as_unmergeable + end + end + + def recheck! + merge_request.mark_as_unchecked unless merge_request.recheck_merge_status? + end + + def can_git_merge? + !merge_request.broken? && repository.can_be_merged?(merge_request.diff_head_sha, merge_request.target_branch) + end + + def merge_to_ref + return true unless merge_ref_auto_sync_enabled? + + result = MergeRequests::MergeToRefService.new(project, merge_request.author).execute(merge_request) + result[:status] == :success + end + end +end diff --git a/app/services/service_response.rb b/app/services/service_response.rb index 1de30e68d87..f3437ba16de 100644 --- a/app/services/service_response.rb +++ b/app/services/service_response.rb @@ -1,19 +1,20 @@ # frozen_string_literal: true class ServiceResponse - def self.success(message: nil) - new(status: :success, message: message) + def self.success(message: nil, payload: {}) + new(status: :success, message: message, payload: payload) end - def self.error(message:, http_status: nil) - new(status: :error, message: message, http_status: http_status) + def self.error(message:, payload: {}, http_status: nil) + new(status: :error, message: message, payload: payload, http_status: http_status) end - attr_reader :status, :message, :http_status + attr_reader :status, :message, :http_status, :payload - def initialize(status:, message: nil, http_status: nil) + def initialize(status:, message: nil, payload: {}, http_status: nil) self.status = status self.message = message + self.payload = payload self.http_status = http_status end @@ -27,5 +28,5 @@ class ServiceResponse private - attr_writer :status, :message, :http_status + attr_writer :status, :message, :http_status, :payload end diff --git a/changelogs/unreleased/osw-sync-merge-ref-upon-mergeability-check.yml b/changelogs/unreleased/osw-sync-merge-ref-upon-mergeability-check.yml new file mode 100644 index 00000000000..1f40089adb8 --- /dev/null +++ b/changelogs/unreleased/osw-sync-merge-ref-upon-mergeability-check.yml @@ -0,0 +1,5 @@ +--- +title: Sync merge ref upon mergeability check +merge_request: 28513 +author: +type: added diff --git a/db/post_migrate/20190620112608_enqueue_reset_merge_status_second_run.rb b/db/post_migrate/20190620112608_enqueue_reset_merge_status_second_run.rb new file mode 100644 index 00000000000..2d096a2a39c --- /dev/null +++ b/db/post_migrate/20190620112608_enqueue_reset_merge_status_second_run.rb @@ -0,0 +1,25 @@ +# frozen_string_literal: true + +# See http://doc.gitlab.com/ce/development/migration_style_guide.html +# for more information on how to write migrations for GitLab. + +class EnqueueResetMergeStatusSecondRun < ActiveRecord::Migration[5.1] + include Gitlab::Database::MigrationHelpers + + DOWNTIME = false + BATCH_SIZE = 10_000 + MIGRATION = 'ResetMergeStatus' + DELAY_INTERVAL = 5.minutes.to_i + + disable_ddl_transaction! + + def up + say 'Scheduling `ResetMergeStatus` jobs' + + # We currently have more than ~5_000_000 merge request records on GitLab.com. + # This means it'll schedule ~500 jobs (10k MRs each) with a 5 minutes gap, + # so this should take ~41 hours for all background migrations to complete. + # ((5_000_000 / 10_000) * 5) / 60 => 41.6666.. + queue_background_migration_jobs_by_range_at_intervals(MergeRequest, MIGRATION, DELAY_INTERVAL, batch_size: BATCH_SIZE) + end +end diff --git a/db/schema.rb b/db/schema.rb index 4e333633a8b..e35c79439ef 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -10,7 +10,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 20190619175843) do +ActiveRecord::Schema.define(version: 20190620112608) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" diff --git a/doc/api/merge_requests.md b/doc/api/merge_requests.md index dd7810c3403..7b58aa3100e 100644 --- a/doc/api/merge_requests.md +++ b/doc/api/merge_requests.md @@ -1191,33 +1191,29 @@ Parameters: } ``` -## Merge to default merge ref path +## Returns the up to date merge-ref HEAD commit Merge the changes between the merge request source and target branches into `refs/merge-requests/:iid/merge` -ref, of the target project repository. This ref will have the state the target branch would have if +ref, of the target project repository, if possible. This ref will have the state the target branch would have if a regular merge action was taken. -This is not a regular merge action given it doesn't change the merge request state in any manner. +This is not a regular merge action given it doesn't change the merge request target branch state in any manner. -This ref (`refs/merge-requests/:iid/merge`) is **always** overwritten when submitting -requests to this API, so none of its state is kept or used in the process. +This ref (`refs/merge-requests/:iid/merge`) isn't necessarily overwritten when submitting +requests to this API, though it'll make sure the ref has the latest possible state. -If the merge request has conflicts, is empty or already merged, -you'll get a `400` and a descriptive error message. If you don't have permissions to do so, -you'll get a `403`. +If the merge request has conflicts, is empty or already merged, you'll get a `400` and a descriptive error message. -It returns the HEAD commit of `refs/merge-requests/:iid/merge` in the response body in -case of `200`. +It returns the HEAD commit of `refs/merge-requests/:iid/merge` in the response body in case of `200`. ``` -PUT /projects/:id/merge_requests/:merge_request_iid/merge_to_ref +GET /projects/:id/merge_requests/:merge_request_iid/merge_ref ``` Parameters: - `id` (required) - The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user - `merge_request_iid` (required) - Internal ID of MR -- `merge_commit_message` (optional) - Custom merge commit message ```json { diff --git a/lib/api/entities.rb b/lib/api/entities.rb index 25e9fdd5fce..ead01dc53f7 100644 --- a/lib/api/entities.rb +++ b/lib/api/entities.rb @@ -703,7 +703,7 @@ module API # See https://gitlab.com/gitlab-org/gitlab-ce/issues/42344 for more # information. expose :merge_status do |merge_request| - merge_request.check_if_can_be_merged + merge_request.check_mergeability merge_request.merge_status end expose :diff_head_sha, as: :sha diff --git a/lib/api/merge_requests.rb b/lib/api/merge_requests.rb index 955624404f1..bf87e9ec2ff 100644 --- a/lib/api/merge_requests.rb +++ b/lib/api/merge_requests.rb @@ -397,28 +397,16 @@ module API present merge_request, with: Entities::MergeRequest, current_user: current_user, project: user_project end - desc 'Merge a merge request to its default temporary merge ref path' - params do - optional :merge_commit_message, type: String, desc: 'Custom merge commit message' - end - put ':id/merge_requests/:merge_request_iid/merge_to_ref' do + desc 'Returns the up to date merge-ref HEAD commit' + get ':id/merge_requests/:merge_request_iid/merge_ref' do merge_request = find_project_merge_request(params[:merge_request_iid]) - authorize! :admin_merge_request, user_project - - merge_params = { - commit_message: params[:merge_commit_message] - } - - result = ::MergeRequests::MergeToRefService - .new(merge_request.target_project, current_user, merge_params) - .execute(merge_request) + result = ::MergeRequests::MergeabilityCheckService.new(merge_request).execute(recheck: true) - if result[:status] == :success - present result.slice(:commit_id), 200 + if result.success? + present :commit_id, result.payload.dig(:merge_ref_head, :commit_id) else - http_status = result[:http_status] || 400 - render_api_error!(result[:message], http_status) + render_api_error!(result.message, 400) end end diff --git a/spec/migrations/enqueue_reset_merge_status_second_run_spec.rb b/spec/migrations/enqueue_reset_merge_status_second_run_spec.rb new file mode 100644 index 00000000000..3c880c6f5fd --- /dev/null +++ b/spec/migrations/enqueue_reset_merge_status_second_run_spec.rb @@ -0,0 +1,52 @@ +# frozen_string_literal: true + +require 'spec_helper' +require Rails.root.join('db', 'post_migrate', '20190620112608_enqueue_reset_merge_status_second_run.rb') + +describe EnqueueResetMergeStatusSecondRun, :migration, :sidekiq do + let(:namespaces) { table(:namespaces) } + let(:projects) { table(:projects) } + let(:namespace) { namespaces.create(name: 'gitlab', path: 'gitlab-org') } + let(:project) { projects.create(namespace_id: namespace.id, name: 'foo') } + let(:merge_requests) { table(:merge_requests) } + + def create_merge_request(id, extra_params = {}) + params = { + id: id, + target_project_id: project.id, + target_branch: 'master', + source_project_id: project.id, + source_branch: 'mr name', + title: "mr name#{id}" + }.merge(extra_params) + + merge_requests.create!(params) + end + + it 'correctly schedules background migrations' do + create_merge_request(1, state: 'opened', merge_status: 'can_be_merged') + create_merge_request(2, state: 'opened', merge_status: 'can_be_merged') + create_merge_request(3, state: 'opened', merge_status: 'can_be_merged') + create_merge_request(4, state: 'merged', merge_status: 'can_be_merged') + create_merge_request(5, state: 'opened', merge_status: 'unchecked') + + stub_const("#{described_class.name}::BATCH_SIZE", 2) + + Sidekiq::Testing.fake! do + Timecop.freeze do + migrate! + + expect(described_class::MIGRATION) + .to be_scheduled_delayed_migration(5.minutes, 1, 2) + + expect(described_class::MIGRATION) + .to be_scheduled_delayed_migration(10.minutes, 3, 4) + + expect(described_class::MIGRATION) + .to be_scheduled_delayed_migration(15.minutes, 5, 5) + + expect(BackgroundMigrationWorker.jobs.size).to eq(3) + end + end + end +end diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb index c6251326c22..fc28c216b21 100644 --- a/spec/models/merge_request_spec.rb +++ b/spec/models/merge_request_spec.rb @@ -1996,57 +1996,6 @@ describe MergeRequest do end end - describe '#check_if_can_be_merged' do - let(:project) { create(:project, only_allow_merge_if_pipeline_succeeds: true) } - - shared_examples 'checking if can be merged' do - context 'when it is not broken and has no conflicts' do - before do - allow(subject).to receive(:broken?) { false } - allow(project.repository).to receive(:can_be_merged?).and_return(true) - end - - it 'is marked as mergeable' do - expect { subject.check_if_can_be_merged }.to change { subject.merge_status }.to('can_be_merged') - end - end - - context 'when broken' do - before do - allow(subject).to receive(:broken?) { true } - allow(project.repository).to receive(:can_be_merged?).and_return(false) - end - - it 'becomes unmergeable' do - expect { subject.check_if_can_be_merged }.to change { subject.merge_status }.to('cannot_be_merged') - end - end - - context 'when it has conflicts' do - before do - allow(subject).to receive(:broken?) { false } - allow(project.repository).to receive(:can_be_merged?).and_return(false) - end - - it 'becomes unmergeable' do - expect { subject.check_if_can_be_merged }.to change { subject.merge_status }.to('cannot_be_merged') - end - end - end - - context 'when merge_status is unchecked' do - subject { create(:merge_request, source_project: project, merge_status: :unchecked) } - - it_behaves_like 'checking if can be merged' - end - - context 'when merge_status is unchecked' do - subject { create(:merge_request, source_project: project, merge_status: :cannot_be_merged_recheck) } - - it_behaves_like 'checking if can be merged' - end - end - describe '#mergeable?' do let(:project) { create(:project) } @@ -2060,7 +2009,7 @@ describe MergeRequest do it 'return true if #mergeable_state? is true and the MR #can_be_merged? is true' do allow(subject).to receive(:mergeable_state?) { true } - expect(subject).to receive(:check_if_can_be_merged) + expect(subject).to receive(:check_mergeability) expect(subject).to receive(:can_be_merged?) { true } expect(subject.mergeable?).to be_truthy @@ -2074,7 +2023,7 @@ describe MergeRequest do it 'checks if merge request can be merged' do allow(subject).to receive(:mergeable_ci_state?) { true } - expect(subject).to receive(:check_if_can_be_merged) + expect(subject).to receive(:check_mergeability) subject.mergeable? end @@ -3142,38 +3091,6 @@ describe MergeRequest do end end - describe '#mergeable_to_ref?' do - it 'returns true when merge request is mergeable' do - subject = create(:merge_request) - - expect(subject.mergeable_to_ref?).to be(true) - end - - it 'returns false when merge request is already merged' do - subject = create(:merge_request, :merged) - - expect(subject.mergeable_to_ref?).to be(false) - end - - it 'returns false when merge request is closed' do - subject = create(:merge_request, :closed) - - expect(subject.mergeable_to_ref?).to be(false) - end - - it 'returns false when merge request is work in progress' do - subject = create(:merge_request, title: 'WIP: The feature') - - expect(subject.mergeable_to_ref?).to be(false) - end - - it 'returns false when merge request has no commits' do - subject = create(:merge_request, source_branch: 'empty-branch', target_branch: 'master') - - expect(subject.mergeable_to_ref?).to be(false) - end - end - describe '#merge_participants' do it 'contains author' do expect(subject.merge_participants).to eq([subject.author]) diff --git a/spec/requests/api/merge_requests_spec.rb b/spec/requests/api/merge_requests_spec.rb index 9f9180bc8c9..76d093e0774 100644 --- a/spec/requests/api/merge_requests_spec.rb +++ b/spec/requests/api/merge_requests_spec.rb @@ -1546,52 +1546,80 @@ describe API::MergeRequests do end end - describe "PUT /projects/:id/merge_requests/:merge_request_iid/merge_to_ref" do - let(:pipeline) { create(:ci_pipeline_without_jobs) } + describe "GET /projects/:id/merge_requests/:merge_request_iid/merge_ref" do + before do + merge_request.mark_as_unchecked! + end + + let(:merge_request_iid) { merge_request.iid } + let(:url) do - "/projects/#{project.id}/merge_requests/#{merge_request.iid}/merge_to_ref" + "/projects/#{project.id}/merge_requests/#{merge_request_iid}/merge_ref" end it 'returns the generated ID from the merge service in case of success' do - put api(url, user), params: { merge_commit_message: 'Custom message' } - - commit = project.commit(json_response['commit_id']) + get api(url, user) expect(response).to have_gitlab_http_status(200) - expect(json_response['commit_id']).to be_present - expect(commit.message).to eq('Custom message') + expect(json_response['commit_id']).to eq(merge_request.merge_ref_head.sha) end - it "returns 400 if branch can't be merged" do - merge_request.update!(state: 'merged') + context 'when merge-ref is not synced with merge status' do + before do + merge_request.update!(merge_status: 'cannot_be_merged') + end - put api(url, user) + it 'returns 200 if MR can be merged' do + get api(url, user) - expect(response).to have_gitlab_http_status(400) - expect(json_response['message']) - .to eq("Merge request is not mergeable to #{merge_request.merge_ref_path}") + expect(response).to have_gitlab_http_status(200) + expect(json_response['commit_id']).to eq(merge_request.merge_ref_head.sha) + end + + it 'returns 400 if MR cannot be merged' do + expect_next_instance_of(MergeRequests::MergeToRefService) do |merge_request| + expect(merge_request).to receive(:execute) { { status: :failed } } + end + + get api(url, user) + + expect(response).to have_gitlab_http_status(400) + expect(json_response['message']).to eq('Merge request is not mergeable') + end end - it 'returns 403 if user has no permissions to merge to the ref' do - user2 = create(:user) - project.add_reporter(user2) + context 'when user has no access to the MR' do + let(:project) { create(:project, :private) } + let(:merge_request) { create(:merge_request, source_project: project, target_project: project) } - put api(url, user2) + it 'returns 404' do + project.add_guest(user) - expect(response).to have_gitlab_http_status(403) - expect(json_response['message']).to eq('403 Forbidden') + get api(url, user) + + expect(response).to have_gitlab_http_status(404) + expect(json_response['message']).to eq('404 Not found') + end end - it 'returns 404 for an invalid merge request IID' do - put api("/projects/#{project.id}/merge_requests/12345/merge_to_ref", user) + context 'when invalid merge request IID' do + let(:merge_request_iid) { '12345' } - expect(response).to have_gitlab_http_status(404) + it 'returns 404' do + get api(url, user) + + expect(response).to have_gitlab_http_status(404) + end end - it "returns 404 if the merge request id is used instead of iid" do - put api("/projects/#{project.id}/merge_requests/#{merge_request.id}/merge", user) + context 'when merge request ID is used instead IID' do + let(:merge_request_iid) { merge_request.id } - expect(response).to have_gitlab_http_status(404) + it 'returns 404' do + get api(url, user) + + expect(response).to have_gitlab_http_status(404) + end end end diff --git a/spec/services/merge_requests/merge_to_ref_service_spec.rb b/spec/services/merge_requests/merge_to_ref_service_spec.rb index 0ac23050caf..61f99f82a76 100644 --- a/spec/services/merge_requests/merge_to_ref_service_spec.rb +++ b/spec/services/merge_requests/merge_to_ref_service_spec.rb @@ -72,10 +72,6 @@ describe MergeRequests::MergeToRefService do let(:merge_request) { create(:merge_request, :simple) } let(:project) { merge_request.project } - before do - project.add_maintainer(user) - end - describe '#execute' do let(:service) do described_class.new(project, user, commit_message: 'Awesome message', @@ -92,6 +88,12 @@ describe MergeRequests::MergeToRefService do it_behaves_like 'successfully evaluates pre-condition checks' context 'commit history comparison with regular MergeService' do + before do + # The merge service needs an authorized user while merge-to-ref + # doesn't. + project.add_maintainer(user) + end + let(:merge_ref_service) do described_class.new(project, user, {}) end @@ -104,12 +106,18 @@ describe MergeRequests::MergeToRefService do it_behaves_like 'MergeService for target ref' end - context 'when merge commit with squash', :quarantine do + context 'when merge commit with squash' do before do - merge_request.update!(squash: true, source_branch: 'master', target_branch: 'feature') + merge_request.update!(squash: true) end it_behaves_like 'MergeService for target ref' + + it 'does not squash before merging' do + expect(MergeRequests::SquashService).not_to receive(:new) + + process_merge_to_ref + end end end @@ -136,9 +144,9 @@ describe MergeRequests::MergeToRefService do let(:merge_method) { :merge } it 'returns error' do - allow(merge_request).to receive(:mergeable_to_ref?) { false } + allow(project).to receive_message_chain(:repository, :merge_to_ref) { nil } - error_message = "Merge request is not mergeable to #{merge_request.merge_ref_path}" + error_message = 'Conflicts detected during merge' result = service.execute(merge_request) @@ -170,28 +178,5 @@ describe MergeRequests::MergeToRefService do it { expect(todo).not_to be_done } end - - context 'when merge request is WIP state' do - it 'fails to merge' do - merge_request = create(:merge_request, title: 'WIP: The feature') - - result = service.execute(merge_request) - - expect(result[:status]).to eq(:error) - expect(result[:message]).to eq("Merge request is not mergeable to #{merge_request.merge_ref_path}") - end - end - - it 'returns error when user has no authorization to admin the merge request' do - unauthorized_user = create(:user) - project.add_reporter(unauthorized_user) - - service = described_class.new(project, unauthorized_user) - - result = service.execute(merge_request) - - expect(result[:status]).to eq(:error) - expect(result[:message]).to eq('You are not allowed to merge to this ref') - end end end diff --git a/spec/services/merge_requests/mergeability_check_service_spec.rb b/spec/services/merge_requests/mergeability_check_service_spec.rb new file mode 100644 index 00000000000..c5fe51b79f2 --- /dev/null +++ b/spec/services/merge_requests/mergeability_check_service_spec.rb @@ -0,0 +1,218 @@ +# frozen_string_literal: true + +require 'spec_helper' + +describe MergeRequests::MergeabilityCheckService do + shared_examples_for 'unmergeable merge request' do + it 'updates or keeps merge status as cannot_be_merged' do + subject + + expect(merge_request.merge_status).to eq('cannot_be_merged') + end + + it 'does not change the merge ref HEAD' do + expect { subject }.not_to change(merge_request, :merge_ref_head) + end + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result).to be_error + end + end + + shared_examples_for 'mergeable merge request' do + it 'updates or keeps merge status as can_be_merged' do + subject + + expect(merge_request.merge_status).to eq('can_be_merged') + end + + it 'updates the merge ref' do + expect { subject }.to change(merge_request, :merge_ref_head).from(nil) + end + + it 'returns ServiceResponse.success' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result).to be_success + end + + it 'ServiceResponse has merge_ref_head payload' do + result = subject + + expect(result.payload.keys).to contain_exactly(:merge_ref_head) + expect(result.payload[:merge_ref_head].keys) + .to contain_exactly(:commit_id, :target_id, :source_id) + end + end + + describe '#execute' do + let(:project) { create(:project, :repository) } + let(:merge_request) { create(:merge_request, merge_status: :unchecked, source_project: project, target_project: project) } + let(:repo) { project.repository } + + subject { described_class.new(merge_request).execute } + + before do + project.add_developer(merge_request.author) + end + + it_behaves_like 'mergeable merge request' + + context 'when multiple calls to the service' do + it 'returns success' do + subject + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.success?).to be(true) + end + + it 'second call does not change the merge-ref' do + expect { subject }.to change(merge_request, :merge_ref_head).from(nil) + expect { subject }.not_to change(merge_request, :merge_ref_head) + end + end + + context 'disabled merge ref sync feature flag' do + before do + stub_feature_flags(merge_ref_auto_sync: false) + end + + it 'returns error and no payload' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge ref is outdated due to disabled feature') + expect(result.payload).to be_empty + end + + it 'updates the merge_status' do + expect { subject }.to change(merge_request, :merge_status).from('unchecked').to('can_be_merged') + end + end + + context 'when broken' do + before do + allow(merge_request).to receive(:broken?) { true } + allow(project.repository).to receive(:can_be_merged?) { false } + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when it has conflicts' do + before do + allow(merge_request).to receive(:broken?) { false } + allow(project.repository).to receive(:can_be_merged?) { false } + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when MR cannot be merged and has no merge ref' do + before do + merge_request.mark_as_unmergeable! + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when MR cannot be merged and has outdated merge ref' do + before do + MergeRequests::MergeToRefService.new(project, merge_request.author).execute(merge_request) + merge_request.mark_as_unmergeable! + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'when merge request is not given' do + subject { described_class.new(nil).execute } + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.message).to eq('Invalid argument') + end + end + + context 'when read only DB' do + it 'returns ServiceResponse.error' do + allow(Gitlab::Database).to receive(:read_only?) { true } + + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.message).to eq('Unsupported operation') + end + end + + context 'when fails to update the merge-ref' do + before do + expect_next_instance_of(MergeRequests::MergeToRefService) do |merge_to_ref| + expect(merge_to_ref).to receive(:execute).and_return(status: :failed) + end + end + + it_behaves_like 'unmergeable merge request' + + it 'returns ServiceResponse.error' do + result = subject + + expect(result).to be_a(ServiceResponse) + expect(result.error?).to be(true) + expect(result.message).to eq('Merge request is not mergeable') + end + end + + context 'recheck enforced' do + subject { described_class.new(merge_request).execute(recheck: true) } + + context 'when MR is mergeable but merge-ref does not exists' do + before do + merge_request.mark_as_mergeable! + end + + it_behaves_like 'mergeable merge request' + end + end + end +end diff --git a/spec/services/service_response_spec.rb b/spec/services/service_response_spec.rb index 30bd4d6820b..e790d272e61 100644 --- a/spec/services/service_response_spec.rb +++ b/spec/services/service_response_spec.rb @@ -16,6 +16,13 @@ describe ServiceResponse do expect(response).to be_success expect(response.message).to eq('Good orange') end + + it 'creates a successful response with payload' do + response = described_class.success(payload: { good: 'orange' }) + + expect(response).to be_success + expect(response.payload).to eq(good: 'orange') + end end describe '.error' do @@ -33,6 +40,15 @@ describe ServiceResponse do expect(response.message).to eq('Bad apple') expect(response.http_status).to eq(400) end + + it 'creates a failed response with payload' do + response = described_class.error(message: 'Bad apple', + payload: { bad: 'apple' }) + + expect(response).to be_error + expect(response.message).to eq('Bad apple') + expect(response.payload).to eq(bad: 'apple') + end end describe '#success?' do |