Add latest changes from gitlab-org/gitlab@master

72 files changed, 1485 insertions, 512 deletions

diff --git a/.gitlab/ci/frontend.gitlab-ci.yml b/.gitlab/ci/frontend.gitlab-ci.yml
index c8ad888dc08..26e0b4fdf08 100644
--- a/.gitlab/ci/frontend.gitlab-ci.yml
+++ b/.gitlab/ci/frontend.gitlab-ci.yml
@@ -93,7 +93,7 @@
     DOCKER_DRIVER: overlay2
     DOCKER_HOST: tcp://docker:2375
   cache:
-    key: "assets-compile:production:vendor_ruby:.yarn-cache:tmp_cache_assets_sprockets:tmp_cache_webpack:v7"
+    key: "assets-compile:production:vendor_ruby:.yarn-cache:tmp_cache_assets_sprockets:tmp_cache_webpack:v9"
   artifacts:
     name: webpack-report
     expire_in: 31d
@@ -152,7 +152,7 @@ gitlab:assets:compile pull-cache:
     # we override the max_old_space_size to prevent OOM errors
     NODE_OPTIONS: --max_old_space_size=3584
   cache:
-    key: "assets-compile:v8"
+    key: "assets-compile:v9"
   artifacts:
     expire_in: 7d
     paths:
@@ -180,7 +180,7 @@ compile-assets pull-push-cache foss:
       when: on_success
   cache:
     policy: pull-push
-    key: "assets-compile:v8:foss"
+    key: "assets-compile:v9:foss"
 
 compile-assets pull-cache:
   extends: .compile-assets-metadata
@@ -203,7 +203,7 @@ compile-assets pull-cache foss:
       when: on_success
   cache:
     policy: pull
-    key: "assets-compile:v8:foss"
+    key: "assets-compile:v9:foss"
 
 .frontend-job-base:
   extends:
diff --git a/.gitlab/ci/global.gitlab-ci.yml b/.gitlab/ci/global.gitlab-ci.yml
index f5b6a353079..c18453b778c 100644
--- a/.gitlab/ci/global.gitlab-ci.yml
+++ b/.gitlab/ci/global.gitlab-ci.yml
@@ -25,7 +25,7 @@
 # Jobs that only need to pull cache
 .default-cache:
   cache:
-    key: "debian-stretch-ruby-2.6.5-node-12.x"
+    key: "debian-stretch-ruby-2.6.5-pg9.6-node-12.x"
     paths:
       - .go/pkg/mod
       - vendor/ruby
diff --git a/.gitlab/ci/rails.gitlab-ci.yml b/.gitlab/ci/rails.gitlab-ci.yml
index 1490338086d..48f5d0e3983 100644
--- a/.gitlab/ci/rails.gitlab-ci.yml
+++ b/.gitlab/ci/rails.gitlab-ci.yml
@@ -143,7 +143,7 @@ static-analysis:
   script:
     - scripts/static-analysis
   cache:
-    key: "debian-stretch-ruby-2.6-and-rubocop"
+    key: "debian-stretch-ruby-2.6-pg9.6-rubocop"
     paths:
       - vendor/ruby
       - tmp/rubocop_cache
diff --git a/.gitlab/ci/review.gitlab-ci.yml b/.gitlab/ci/review.gitlab-ci.yml
index 2e42aa46ac0..5d2c33d06b4 100644
--- a/.gitlab/ci/review.gitlab-ci.yml
+++ b/.gitlab/ci/review.gitlab-ci.yml
@@ -25,6 +25,39 @@
   - ".dockerignore"
   - "qa/**/*"
 
+.review:rules:mr-and-schedule:
+  rules:
+    - <<: *if-canonical-gitlab-merge-request
+      changes: *code-qa-patterns
+      when: on_success
+    - <<: *if-canonical-dot-com-gitlab-org-group-schedule
+      when: on_success
+
+.review:rules:mr-only-auto:
+  rules:
+    - <<: *if-canonical-gitlab-merge-request
+      changes: *code-qa-patterns
+      when: on_success
+
+.review:rules:mr-only-manual:
+  rules:
+    - <<: *if-canonical-gitlab-merge-request
+      changes: *code-qa-patterns
+      when: manual
+
+.review:rules:review-cleanup:
+  rules:
+    - <<: *if-canonical-gitlab-merge-request
+      changes: *code-qa-patterns
+      when: manual
+    - <<: *if-canonical-dot-com-gitlab-org-group-schedule
+      when: on_success
+
+.review:rules:danger:
+  rules:
+    - if: '$DANGER_GITLAB_API_TOKEN && $CI_MERGE_REQUEST_IID'
+      when: on_success
+
 .review-docker:
   extends:
     - .default-tags
@@ -41,14 +74,10 @@
     GITLAB_EDITION: "ce"
 
 build-qa-image:
-  extends: .review-docker
+  extends:
+    - .review-docker
+    - .review:rules:mr-and-schedule
   stage: prepare
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: on_success
-    - <<: *if-canonical-dot-com-gitlab-org-group-schedule
-      when: on_success
   script:
     - '[[ ! -d "ee/" ]] || export GITLAB_EDITION="ee"'
     - export QA_MASTER_IMAGE="${CI_REGISTRY}/${CI_PROJECT_PATH}/gitlab/gitlab-${GITLAB_EDITION}-qa:master"
@@ -58,11 +87,11 @@ build-qa-image:
     - time docker build --cache-from "${QA_MASTER_IMAGE}" --tag ${QA_IMAGE} --file ./qa/Dockerfile ./
     - time docker push ${QA_IMAGE}
 
-.base-review-cleanup:
+review-cleanup:
   extends:
     - .default-tags
     - .default-retry
-    - .default-only
+    - .review:rules:review-cleanup
   stage: prepare
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:gitlab-charts-build-base
   allow_failure: true
@@ -75,45 +104,23 @@ build-qa-image:
   script:
     - ruby -rrubygems scripts/review_apps/automated_cleanup.rb
 
-schedule:review-cleanup:
-  extends:
-    - .base-review-cleanup
-    - .only-review-schedules
-
-manual:review-cleanup:
-  extends:
-    - .base-review-cleanup
-    - .only:changes-code-qa
-  when: manual
-
-.review-build-cng-base:
+review-build-cng:
   extends:
     - .default-tags
     - .default-retry
-    - .default-only
+    - .review:rules:mr-and-schedule
   image: ruby:2.6-alpine
   stage: review-prepare
   before_script:
     - source scripts/utils.sh
     - install_api_client_dependencies_with_apk
     - install_gitlab_gem
-  dependencies: []
+  needs:
+    - job: gitlab:assets:compile pull-cache
+      artifacts: false
   script:
     - BUILD_TRIGGER_TOKEN=$REVIEW_APPS_BUILD_TRIGGER_TOKEN ./scripts/trigger-build cng
 
-review-build-cng:
-  extends:
-    - .review-build-cng-base
-    - .only-review
-    - .only:changes-code-qa
-  needs: ["gitlab:assets:compile pull-cache"]
-
-schedule:review-build-cng:
-  extends:
-    - .review-build-cng-base
-    - .only-review-schedules
-  needs: ["gitlab:assets:compile pull-cache"]
-
 .review-workflow-base:
   extends:
     - .default-tags
@@ -130,8 +137,10 @@ schedule:review-build-cng:
     url: https://gitlab-${CI_ENVIRONMENT_SLUG}.${REVIEW_APPS_DOMAIN}
     on_stop: review-stop
 
-.review-deploy-base:
-  extends: .review-workflow-base
+review-deploy:
+  extends:
+    - .review-workflow-base
+    - .review:rules:mr-and-schedule
   stage: review
   allow_failure: true
   before_script:
@@ -140,7 +149,7 @@ schedule:review-build-cng:
     - export GITALY_VERSION=$(<GITALY_SERVER_VERSION)
     - export GITLAB_WORKHORSE_VERSION=$(<GITLAB_WORKHORSE_VERSION)
     - echo "${CI_ENVIRONMENT_URL}" > review_app_url.txt
-    - source scripts/utils.sh
+    - source ./scripts/utils.sh
     - install_api_client_dependencies_with_apk
     - source scripts/review_apps/review-apps.sh
   script:
@@ -156,19 +165,7 @@ schedule:review-build-cng:
     expire_in: 2 days
     when: always
 
-review-deploy:
-  extends: .review-deploy-base
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: on_success
-
-schedule:review-deploy:
-  extends:
-    - .review-deploy-base
-    - .only-review-schedules
-
-.base-review-stop:
+.review-stop-base:
   extends: .review-workflow-base
   environment:
     action: stop
@@ -183,22 +180,18 @@ schedule:review-deploy:
     - source ./scripts/review_apps/review-apps.sh
 
 review-stop-failed-deployment:
-  extends: .base-review-stop
+  extends:
+    - .review-stop-base
+    - .review:rules:mr-only-auto
   stage: prepare
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: on_success
   script:
     - delete_failed_release
 
 review-stop:
-  extends: .base-review-stop
+  extends:
+    - .review-stop-base
+    - .review:rules:mr-only-manual
   stage: review
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: manual
   allow_failure: true
   script:
     - delete_release
@@ -206,8 +199,9 @@ review-stop:
 .review-qa-base:
   extends: .review-docker
   stage: qa
-  needs: ["review-deploy"]
-  dependencies: ["review-deploy"]
+  needs:
+    - job: review-deploy
+      artifacts: true
   allow_failure: true
   variables:
     QA_ARTIFACTS_DIR: "${CI_PROJECT_DIR}/qa"
@@ -235,29 +229,30 @@ review-stop:
     when: always
 
 review-qa-smoke:
-  extends: .review-qa-base
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: on_success
+  extends:
+    - .review-qa-base
+    - .review:rules:mr-only-auto
   script:
     - gitlab-qa Test::Instance::Smoke "${QA_IMAGE}" "${CI_ENVIRONMENT_URL}"
 
 review-qa-all:
-  extends: .review-qa-base
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: manual
+  extends:
+    - .review-qa-base
+    - .review:rules:mr-only-manual
   parallel: 5
   script:
     - export KNAPSACK_REPORT_PATH=knapsack/master_report.json
     - export KNAPSACK_TEST_FILE_PATTERN=qa/specs/features/**/*_spec.rb
     - gitlab-qa Test::Instance::Any "${QA_IMAGE}" "${CI_ENVIRONMENT_URL}" -- --format RspecJunitFormatter --out tmp/rspec-${CI_JOB_ID}.xml --format html --out tmp/rspec.htm --color --format documentation
 
-.review-performance-base:
-  extends: .review-docker
+review-performance:
+  extends:
+    - .review-docker
+    - .review:rules:mr-and-schedule
   stage: qa
+  needs:
+    - job: review-deploy
+      artifacts: true
   allow_failure: true
   before_script:
     - export CI_ENVIRONMENT_URL="$(cat review_app_url.txt)"
@@ -275,58 +270,17 @@ review-qa-all:
     reports:
       performance: performance.json
 
-review-performance:
-  extends: .review-performance-base
-  rules:
-    - <<: *if-canonical-gitlab-merge-request
-      changes: *code-qa-patterns
-      when: on_success
-  needs: ["review-deploy"]
-  dependencies: ["review-deploy"]
-  before_script:
-    - export CI_ENVIRONMENT_URL="$(cat review_app_url.txt)"
-    - echo "${CI_ENVIRONMENT_URL}"
-    - mkdir -p gitlab-exporter
-    - wget -O ./gitlab-exporter/index.js https://gitlab.com/gitlab-org/gl-performance/raw/master/index.js
-    - mkdir -p sitespeed-results
-  script:
-    - docker run --shm-size=1g --rm -v "$(pwd)":/sitespeed.io sitespeedio/sitespeed.io:6.3.1 --plugins.add ./gitlab-exporter --outputFolder sitespeed-results "${CI_ENVIRONMENT_URL}"
-  after_script:
-    - mv sitespeed-results/data/performance.json performance.json
-  artifacts:
-    paths:
-      - sitespeed-results/
-    reports:
-      performance: performance.json
-
-schedule:review-performance:
-  extends:
-    - .review-performance-base
-    - .only-review-schedules
-  needs: ["schedule:review-deploy"]
-  dependencies: ["schedule:review-deploy"]
-
 parallel-spec-reports:
   extends:
     - .default-tags
-    - .default-only
-    - .only-review
-    - .only:changes-code-qa
+    - .review:rules:mr-only-manual
   image: ruby:2.6-alpine
   stage: post-qa
   dependencies: ["review-qa-all"]
+  allow_failure: true
   variables:
     NEW_PARALLEL_SPECS_REPORT: qa/report-new.html
     BASE_ARTIFACT_URL: "${CI_PROJECT_URL}/-/jobs/${CI_JOB_ID}/artifacts/file/qa/"
-  allow_failure: true
-  when: manual
-  artifacts:
-    when: always
-    paths:
-      - qa/report-new.html
-      - qa/gitlab-qa-run-*
-    reports:
-      junit: qa/gitlab-qa-run-*/**/rspec-*.xml
   script:
     - apk add --update build-base libxml2-dev libxslt-dev && rm -rf /var/cache/apk/*
     - gem install nokogiri --no-document
@@ -335,20 +289,23 @@ parallel-spec-reports:
     - cd -
     - '[[ -f $NEW_PARALLEL_SPECS_REPORT ]] || echo "{}" > ${NEW_PARALLEL_SPECS_REPORT}'
     - scripts/merge-html-reports ${NEW_PARALLEL_SPECS_REPORT} ${BASE_ARTIFACT_URL}${ARTIFACT_DIRS} qa/gitlab-qa-run-*/**/rspec.htm
+  artifacts:
+    when: always
+    paths:
+      - qa/report-new.html
+      - qa/gitlab-qa-run-*
+    reports:
+      junit: qa/gitlab-qa-run-*/**/rspec-*.xml
 
 danger-review:
   extends:
     - .default-tags
     - .default-retry
     - .default-cache
-    - .default-only
-    - .except:refs-master-tags-stable-deploy
+    - .review:rules:danger
   image: registry.gitlab.com/gitlab-org/gitlab-build-images:danger
   stage: test
   dependencies: []
-  only:
-    variables:
-      - $DANGER_GITLAB_API_TOKEN
   script:
     - git version
     - node --version
diff --git a/.gitlab/ci/setup.gitlab-ci.yml b/.gitlab/ci/setup.gitlab-ci.yml
index 24267584393..73ec0a559fc 100644
--- a/.gitlab/ci/setup.gitlab-ci.yml
+++ b/.gitlab/ci/setup.gitlab-ci.yml
@@ -1,3 +1,90 @@
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-not-canonical-namespace: &if-not-canonical-namespace
+  if: '$CI_PROJECT_NAMESPACE !~ /^gitlab(-org)?($|\/)/'
+
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-not-foss: &if-not-foss
+  if: '$CI_PROJECT_NAME != "gitlab-foss" && $CI_PROJECT_NAME != "gitlab-ce" && $CI_PROJECT_NAME != "gitlabhq"'
+
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-master-or-tag: &if-master-or-tag
+  if: '$CI_COMMIT_REF_NAME == "master" || $CI_COMMIT_TAG'
+
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-default-refs: &if-default-refs
+  if: '$CI_COMMIT_REF_NAME == "master" || $CI_COMMIT_REF_NAME =~ /^[\d-]+-stable(-ee)?$/ || $CI_COMMIT_REF_NAME =~ /^\d+-\d+-auto-deploy-\d+$/ || $CI_COMMIT_REF_NAME =~ /^security\// || $CI_MERGE_REQUEST_IID || $CI_COMMIT_TAG'
+
+# Make sure to update all the similar patterns in other CI config files if you modify these patterns
+.code-backstage-patterns: &code-backstage-patterns
+  - ".gitlab/ci/**/*"
+  - ".{eslintignore,gitattributes,nvmrc,prettierrc,stylelintrc,yamllint}"
+  - ".{codeclimate,eslintrc,gitlab-ci,haml-lint,haml-lint_todo,rubocop,rubocop_todo,scss-lint}.yml"
+  - ".csscomb.json"
+  - "Dockerfile.assets"
+  - "*_VERSION"
+  - "Gemfile{,.lock}"
+  - "Rakefile"
+  - "{babel.config,jest.config}.js"
+  - "config.ru"
+  - "{package.json,yarn.lock}"
+  - "{,ee/}{app,bin,config,db,haml_lint,lib,locale,public,scripts,symbol,vendor}/**/*"
+  - "doc/api/graphql/reference/*" # Files in this folder are auto-generated
+  # Backstage changes
+  - "Dangerfile"
+  - "danger/**/*"
+  - "{,ee/}fixtures/**/*"
+  - "{,ee/}rubocop/**/*"
+  - "{,ee/}spec/**/*"
+  - "doc/README.md"  # Some RSpec test rely on this file
+
+# Make sure to update all the similar patterns in other CI config files if you modify these patterns
+.code-backstage-qa-patterns: &code-backstage-qa-patterns
+  - ".gitlab/ci/**/*"
+  - ".{eslintignore,gitattributes,nvmrc,prettierrc,stylelintrc,yamllint}"
+  - ".{codeclimate,eslintrc,gitlab-ci,haml-lint,haml-lint_todo,rubocop,rubocop_todo,scss-lint}.yml"
+  - ".csscomb.json"
+  - "Dockerfile.assets"
+  - "*_VERSION"
+  - "Gemfile{,.lock}"
+  - "Rakefile"
+  - "{babel.config,jest.config}.js"
+  - "config.ru"
+  - "{package.json,yarn.lock}"
+  - "{,ee/}{app,bin,config,db,haml_lint,lib,locale,public,scripts,symbol,vendor}/**/*"
+  - "doc/api/graphql/reference/*" # Files in this folder are auto-generated
+  # Backstage changes
+  - "Dangerfile"
+  - "danger/**/*"
+  - "{,ee/}fixtures/**/*"
+  - "{,ee/}rubocop/**/*"
+  - "{,ee/}spec/**/*"
+  - "doc/README.md"  # Some RSpec test rely on this file
+  # QA changes
+  - ".dockerignore"
+  - "qa/**/*"
+
+.setup:rules:cache-gems:
+  rules:
+    - <<: *if-not-canonical-namespace
+      when: never
+    - <<: *if-master-or-tag
+      changes: *code-backstage-qa-patterns
+      when: on_success
+
+.setup:rules:gitlab_git_test:
+  rules:
+    - <<: *if-default-refs
+      changes: *code-backstage-patterns
+      when: on_success
+
+.setup:rules:no_ee_check:
+  rules:
+    - <<: *if-not-foss
+      when: never
+    - <<: *if-default-refs
+      changes: *code-backstage-patterns
+      when: on_success
+
 # Insurance in case a gem needed by one of our releases gets yanked from
 # rubygems.org in the future.
 cache gems:
@@ -6,11 +93,11 @@ cache gems:
     - .default-retry
     - .default-cache
     - .default-before_script
-    - .only:variables-canonical-dot-com
-    - .only:changes-code-backstage-qa
+    - .setup:rules:cache-gems
   stage: test
-  dependencies: ["setup-test-env"]
-  needs: ["setup-test-env"]
+  needs:
+    - job: setup-test-env
+      artifacts: true
   variables:
     SETUP_DB: "false"
   script:
@@ -18,30 +105,23 @@ cache gems:
   artifacts:
     paths:
       - vendor/cache
-  only:
-    refs:
-      - master
-      - tags
 
 .minimal-job:
   extends:
     - .default-tags
     - .default-retry
-    - .default-only
-    - .only:changes-code-backstage
   dependencies: []
 
 gitlab_git_test:
-  extends: .minimal-job
+  extends:
+    - .minimal-job
+    - .setup:rules:gitlab_git_test
   script:
     - spec/support/prepare-gitlab-git-test-for-commit --check-for-changes
 
 no_ee_check:
-  extends: .minimal-job
+  extends:
+    - .minimal-job
+    - .setup:rules:no_ee_check
   script:
     - scripts/no-ee-check
-  only:
-    variables:
-      - $CI_PROJECT_NAME == "gitlab-foss"
-      - $CI_PROJECT_NAME == "gitlab-ce"  # Support former project name for forks/mirrors
-      - $CI_PROJECT_NAME == "gitlabhq"  # Support former project name for dev
diff --git a/.gitlab/ci/test-metadata.gitlab-ci.yml b/.gitlab/ci/test-metadata.gitlab-ci.yml
index 4ec0dc70ae6..2457498f84d 100644
--- a/.gitlab/ci/test-metadata.gitlab-ci.yml
+++ b/.gitlab/ci/test-metadata.gitlab-ci.yml
@@ -1,7 +1,57 @@
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-default-refs: &if-default-refs
+  if: '$CI_COMMIT_REF_NAME == "master" || $CI_COMMIT_REF_NAME =~ /^[\d-]+-stable(-ee)?$/ || $CI_COMMIT_REF_NAME =~ /^\d+-\d+-auto-deploy-\d+$/ || $CI_COMMIT_REF_NAME =~ /^security\// || $CI_MERGE_REQUEST_IID || $CI_COMMIT_TAG'
+
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-merge-request: &if-merge-request
+  if: '$CI_MERGE_REQUEST_IID'
+
+# Make sure to update all the similar conditions in other CI config files if you modify these conditions
+.if-canonical-dot-com-gitlab-schedule: &if-canonical-dot-com-gitlab-schedule
+  if: '$CI_SERVER_HOST == "gitlab.com" && $CI_PROJECT_PATH == "gitlab-org/gitlab" && $CI_PIPELINE_SOURCE == "schedule"'
+
+# Make sure to update all the similar patterns in other CI config files if you modify these patterns
+.code-backstage-patterns: &code-backstage-patterns
+  - ".gitlab/ci/**/*"
+  - ".{eslintignore,gitattributes,nvmrc,prettierrc,stylelintrc,yamllint}"
+  - ".{codeclimate,eslintrc,gitlab-ci,haml-lint,haml-lint_todo,rubocop,rubocop_todo,scss-lint}.yml"
+  - ".csscomb.json"
+  - "Dockerfile.assets"
+  - "*_VERSION"
+  - "Gemfile{,.lock}"
+  - "Rakefile"
+  - "{babel.config,jest.config}.js"
+  - "config.ru"
+  - "{package.json,yarn.lock}"
+  - "{,ee/}{app,bin,config,db,haml_lint,lib,locale,public,scripts,symbol,vendor}/**/*"
+  - "doc/api/graphql/reference/*" # Files in this folder are auto-generated
+  # Backstage changes
+  - "Dangerfile"
+  - "danger/**/*"
+  - "{,ee/}fixtures/**/*"
+  - "{,ee/}rubocop/**/*"
+  - "{,ee/}spec/**/*"
+  - "doc/README.md"  # Some RSpec test rely on this file
+
+.test-metadata:rules:retrieve-tests-metadata:
+  rules:
+    - <<: *if-default-refs
+      changes: *code-backstage-patterns
+      when: on_success
+
+.test-metadata:rules:update-tests-metadata:
+  rules:
+    - <<: *if-canonical-dot-com-gitlab-schedule
+      changes: *code-backstage-patterns
+      when: on_success
+
+.test-metadata:rules:flaky-examples-check:
+  rules:
+    - <<: *if-merge-request
+      changes: *code-backstage-patterns
+      when: on_success
+
 .tests-metadata-state:
-  extends:
-    - .default-only
-    - .only:changes-code-backstage
   variables:
     TESTS_METADATA_S3_BUCKET: "gitlab-ce-cache"
   before_script:
@@ -19,7 +69,9 @@
       - rspec_profiling/
 
 retrieve-tests-metadata:
-  extends: .tests-metadata-state
+  extends:
+    - .tests-metadata-state
+    - .test-metadata:rules:retrieve-tests-metadata
   stage: prepare
   cache:
     policy: pull
@@ -28,7 +80,9 @@ retrieve-tests-metadata:
     - retrieve_tests_metadata
 
 update-tests-metadata:
-  extends: .tests-metadata-state
+  extends:
+    - .tests-metadata-state
+    - .test-metadata:rules:update-tests-metadata
   stage: post-test
   cache:
     policy: push
@@ -36,27 +90,17 @@ update-tests-metadata:
     - retry gem install fog-aws mime-types activesupport rspec_profiling postgres-copy --no-document
     - source scripts/rspec_helpers.sh
     - update_tests_metadata
-  only:
-    refs:
-      - schedules
-    variables:
-      # Only update the Knapsack metadata on GitLab.com/gitlab-org/gitlab
-      - $CI_SERVER_HOST == "gitlab.com" && $CI_PROJECT_PATH == "gitlab-org/gitlab"
 
 flaky-examples-check:
   extends:
     - .default-tags
     - .default-retry
-    - .default-only
-    - .only:changes-code-backstage
+    - .test-metadata:rules:flaky-examples-check
   image: ruby:2.6-alpine
   stage: post-test
   variables:
     NEW_FLAKY_SPECS_REPORT: rspec_flaky/report-new.json
   allow_failure: true
-  only:
-    refs:
-      - merge_requests
   artifacts:
     expire_in: 30d
     paths:
diff --git a/app/assets/javascripts/blob/components/blob_header.vue b/app/assets/javascripts/blob/components/blob_header.vue
index 61a66513838..b7d9600ec40 100644
--- a/app/assets/javascripts/blob/components/blob_header.vue
+++ b/app/assets/javascripts/blob/components/blob_header.vue
@@ -2,8 +2,7 @@
 import ViewerSwitcher from './blob_header_viewer_switcher.vue';
 import DefaultActions from './blob_header_default_actions.vue';
 import BlobFilepath from './blob_header_filepath.vue';
-import eventHub from '../event_hub';
-import { RICH_BLOB_VIEWER, SIMPLE_BLOB_VIEWER } from './constants';
+import { SIMPLE_BLOB_VIEWER } from './constants';
 
 export default {
   components: {
@@ -26,10 +25,15 @@ export default {
       required: false,
       default: false,
     },
+    activeViewerType: {
+      type: String,
+      required: false,
+      default: SIMPLE_BLOB_VIEWER,
+    },
   },
   data() {
     return {
-      activeViewer: this.blob.richViewer ? RICH_BLOB_VIEWER : SIMPLE_BLOB_VIEWER,
+      viewer: this.hideViewerSwitcher ? null : this.activeViewerType,
     };
   },
   computed: {
@@ -40,19 +44,16 @@ export default {
       return !this.hideDefaultActions;
     },
   },
-  created() {
-    if (this.showViewerSwitcher) {
-      eventHub.$on('switch-viewer', this.setActiveViewer);
-    }
-  },
-  beforeDestroy() {
-    if (this.showViewerSwitcher) {
-      eventHub.$off('switch-viewer', this.setActiveViewer);
-    }
+  watch: {
+    viewer(newVal, oldVal) {
+      if (!this.hideViewerSwitcher && newVal !== oldVal) {
+        this.$emit('viewer-changed', newVal);
+      }
+    },
   },
   methods: {
-    setActiveViewer(viewer) {
-      this.activeViewer = viewer;
+    proxyCopyRequest() {
+      this.$emit('copy');
     },
   },
 };
@@ -66,11 +67,16 @@ export default {
     </blob-filepath>
 
     <div class="file-actions d-none d-sm-block">
-      <viewer-switcher v-if="showViewerSwitcher" :blob="blob" :active-viewer="activeViewer" />
+      <viewer-switcher v-if="showViewerSwitcher" v-model="viewer" />
 
       <slot name="actions"></slot>
 
-      <default-actions v-if="showDefaultActions" :blob="blob" :active-viewer="activeViewer" />
+      <default-actions
+        v-if="showDefaultActions"
+        :raw-path="blob.rawPath"
+        :active-viewer="viewer"
+        @copy="proxyCopyRequest"
+      />
     </div>
   </div>
 </template>
diff --git a/app/assets/javascripts/blob/components/blob_header_default_actions.vue b/app/assets/javascripts/blob/components/blob_header_default_actions.vue
index e526fae0dba..f5157fba819 100644
--- a/app/assets/javascripts/blob/components/blob_header_default_actions.vue
+++ b/app/assets/javascripts/blob/components/blob_header_default_actions.vue
@@ -7,7 +7,6 @@ import {
   RICH_BLOB_VIEWER,
   SIMPLE_BLOB_VIEWER,
 } from './constants';
-import eventHub from '../event_hub';
 
 export default {
   components: {
@@ -19,8 +18,8 @@ export default {
     GlTooltip: GlTooltipDirective,
   },
   props: {
-    blob: {
-      type: Object,
+    rawPath: {
+      type: String,
       required: true,
     },
     activeViewer: {
@@ -30,11 +29,8 @@ export default {
     },
   },
   computed: {
-    rawUrl() {
-      return this.blob.rawPath;
-    },
     downloadUrl() {
-      return `${this.blob.rawPath}?inline=false`;
+      return `${this.rawPath}?inline=false`;
     },
     copyDisabled() {
       return this.activeViewer === RICH_BLOB_VIEWER;
@@ -42,7 +38,7 @@ export default {
   },
   methods: {
     requestCopyContents() {
-      eventHub.$emit('copy');
+      this.$emit('copy');
     },
   },
   BTN_COPY_CONTENTS_TITLE,
@@ -65,7 +61,7 @@ export default {
       v-gl-tooltip.hover
       :aria-label="$options.BTN_RAW_TITLE"
       :title="$options.BTN_RAW_TITLE"
-      :href="rawUrl"
+      :href="rawPath"
       target="_blank"
     >
       <gl-icon name="doc-code" :size="14" />
diff --git a/app/assets/javascripts/blob/components/blob_header_viewer_switcher.vue b/app/assets/javascripts/blob/components/blob_header_viewer_switcher.vue
index 13ea87c99b1..689fa7638f0 100644
--- a/app/assets/javascripts/blob/components/blob_header_viewer_switcher.vue
+++ b/app/assets/javascripts/blob/components/blob_header_viewer_switcher.vue
@@ -6,7 +6,6 @@ import {
   SIMPLE_BLOB_VIEWER,
   SIMPLE_BLOB_VIEWER_TITLE,
 } from './constants';
-import eventHub from '../event_hub';
 
 export default {
   components: {
@@ -18,11 +17,7 @@ export default {
     GlTooltip: GlTooltipDirective,
   },
   props: {
-    blob: {
-      type: Object,
-      required: true,
-    },
-    activeViewer: {
+    value: {
       type: String,
       default: SIMPLE_BLOB_VIEWER,
       required: false,
@@ -30,16 +25,16 @@ export default {
   },
   computed: {
     isSimpleViewer() {
-      return this.activeViewer === SIMPLE_BLOB_VIEWER;
+      return this.value === SIMPLE_BLOB_VIEWER;
     },
     isRichViewer() {
-      return this.activeViewer === RICH_BLOB_VIEWER;
+      return this.value === RICH_BLOB_VIEWER;
     },
   },
   methods: {
     switchToViewer(viewer) {
-      if (viewer !== this.activeViewer) {
-        eventHub.$emit('switch-viewer', viewer);
+      if (viewer !== this.value) {
+        this.$emit('input', viewer);
       }
     },
   },
diff --git a/app/assets/javascripts/blob/event_hub.js b/app/assets/javascripts/blob/event_hub.js
deleted file mode 100644
index 0948c2e5352..00000000000
--- a/app/assets/javascripts/blob/event_hub.js
+++ /dev/null
@@ -1,3 +0,0 @@
-import Vue from 'vue';
-
-export default new Vue();
diff --git a/app/assets/javascripts/ide/ide_router.js b/app/assets/javascripts/ide/ide_router.js
index 8c84b98a108..0fab3ee0f3b 100644
--- a/app/assets/javascripts/ide/ide_router.js
+++ b/app/assets/javascripts/ide/ide_router.js
@@ -1,11 +1,11 @@
 import Vue from 'vue';
-import VueRouter from 'vue-router';
+import IdeRouter from '~/ide/ide_router_extension';
 import { joinPaths } from '~/lib/utils/url_utility';
 import flash from '~/flash';
 import store from './stores';
 import { __ } from '~/locale';
 
-Vue.use(VueRouter);
+Vue.use(IdeRouter);
 
 /**
  * Routes below /-/ide/:
@@ -33,7 +33,7 @@ const EmptyRouterComponent = {
   },
 };
 
-const router = new VueRouter({
+const router = new IdeRouter({
   mode: 'history',
   base: joinPaths(gon.relative_url_root || '', '/-/ide/'),
   routes: [
diff --git a/app/assets/javascripts/ide/ide_router_extension.js b/app/assets/javascripts/ide/ide_router_extension.js
new file mode 100644
index 00000000000..a146aca7283
--- /dev/null
+++ b/app/assets/javascripts/ide/ide_router_extension.js
@@ -0,0 +1,21 @@
+import VueRouter from 'vue-router';
+import { escapeFileUrl } from '~/lib/utils/url_utility';
+
+// To allow special characters (like "#," for example) in the branch names, we
+// should encode all the locations before those get processed by History API.
+// Otherwise, paths get messed up so that the router receives incorrect
+// branchid. The only way to do it consistently and in a more or less
+// future-proof manner is, unfortunately, to monkey-patch VueRouter or, as
+// suggested here, achieve the same more reliably by subclassing VueRouter and
+// update the methods, used in WebIDE.
+//
+// More context: https://gitlab.com/gitlab-org/gitlab/issues/35473
+
+export default class IDERouter extends VueRouter {
+  push(location, onComplete, onAbort) {
+    super.push(escapeFileUrl(location), onComplete, onAbort);
+  }
+  resolve(to, current, append) {
+    return super.resolve(escapeFileUrl(to), current, append);
+  }
+}
diff --git a/app/assets/javascripts/lib/utils/url_utility.js b/app/assets/javascripts/lib/utils/url_utility.js
index 267b49e9d98..1ff4f7bab97 100644
--- a/app/assets/javascripts/lib/utils/url_utility.js
+++ b/app/assets/javascripts/lib/utils/url_utility.js
@@ -194,12 +194,14 @@ export function redirectTo(url) {
   return window.location.assign(url);
 }
 
+export const escapeFileUrl = fileUrl => encodeURIComponent(fileUrl).replace(/%2F/g, '/');
+
 export function webIDEUrl(route = undefined) {
   let returnUrl = `${gon.relative_url_root || ''}/-/ide/`;
   if (route) {
     returnUrl += `project${route.replace(new RegExp(`^${gon.relative_url_root || ''}`), '')}`;
   }
-  return returnUrl;
+  return escapeFileUrl(returnUrl);
 }
 
 /**
@@ -313,8 +315,6 @@ export const setUrlParams = (params, url = window.location.href, clearParams = f
   return urlObj.toString();
 };
 
-export const escapeFileUrl = fileUrl => encodeURIComponent(fileUrl).replace(/%2F/g, '/');
-
 export function urlIsDifferent(url, compare = String(window.location)) {
   return url !== compare;
 }
diff --git a/app/assets/javascripts/pages/projects/graphs/charts/index.js b/app/assets/javascripts/pages/projects/graphs/charts/index.js
index 1b94fb06107..803f4e37705 100644
--- a/app/assets/javascripts/pages/projects/graphs/charts/index.js
+++ b/app/assets/javascripts/pages/projects/graphs/charts/index.js
@@ -1,47 +1,15 @@
-import $ from 'jquery';
-import Chart from 'chart.js';
-import { barChartOptions, pieChartOptions } from '~/lib/utils/chart_utils';
+import Vue from 'vue';
+import { __ } from '~/locale';
+import { GlColumnChart } from '@gitlab/ui/dist/charts';
+import SeriesDataMixin from './series_data_mixin';
 
 document.addEventListener('DOMContentLoaded', () => {
-  const projectChartData = JSON.parse(document.getElementById('projectChartData').innerHTML);
+  const languagesContainer = document.getElementById('js-languages-chart');
+  const monthContainer = document.getElementById('js-month-chart');
+  const weekdayContainer = document.getElementById('js-weekday-chart');
+  const hourContainer = document.getElementById('js-hour-chart');
 
-  const barChart = (selector, data) => {
-    // get selector by context
-    const ctx = selector.get(0).getContext('2d');
-    // pointing parent container to make chart.js inherit its width
-    const container = $(selector).parent();
-    selector.attr('width', $(container).width());
-
-    // Scale fonts if window width lower than 768px (iPad portrait)
-    const shouldAdjustFontSize = window.innerWidth < 768;
-    return new Chart(ctx, {
-      type: 'bar',
-      data,
-      options: barChartOptions(shouldAdjustFontSize),
-    });
-  };
-
-  const pieChart = (context, data) => {
-    const options = pieChartOptions();
-
-    return new Chart(context, {
-      type: 'pie',
-      data,
-      options,
-    });
-  };
-
-  const chartData = data => ({
-    labels: Object.keys(data),
-    datasets: [
-      {
-        backgroundColor: 'rgba(220,220,220,0.5)',
-        borderColor: 'rgba(220,220,220,1)',
-        borderWidth: 1,
-        data: Object.values(data),
-      },
-    ],
-  });
+  const LANGUAGE_CHART_HEIGHT = 300;
 
   const reorderWeekDays = (weekDays, firstDayOfWeek = 0) => {
     if (firstDayOfWeek === 0) {
@@ -58,28 +26,115 @@ document.addEventListener('DOMContentLoaded', () => {
     }, {});
   };
 
-  const hourData = chartData(projectChartData.hour);
-  barChart($('#hour-chart'), hourData);
-
-  const weekDays = reorderWeekDays(projectChartData.weekDays, gon.first_day_of_week);
-  const dayData = chartData(weekDays);
-  barChart($('#weekday-chart'), dayData);
+  // eslint-disable-next-line no-new
+  new Vue({
+    el: languagesContainer,
+    components: {
+      GlColumnChart,
+    },
+    data() {
+      return {
+        chartData: JSON.parse(languagesContainer.dataset.chartData),
+      };
+    },
+    computed: {
+      seriesData() {
+        return { full: this.chartData.map(d => [d.label, d.value]) };
+      },
+    },
+    render(h) {
+      return h(GlColumnChart, {
+        props: {
+          data: this.seriesData,
+          xAxisTitle: __('Used programming language'),
+          yAxisTitle: __('Percentage'),
+          xAxisType: 'category',
+        },
+        attrs: {
+          height: LANGUAGE_CHART_HEIGHT,
+        },
+      });
+    },
+  });
 
-  const monthData = chartData(projectChartData.month);
-  barChart($('#month-chart'), monthData);
+  // eslint-disable-next-line no-new
+  new Vue({
+    el: monthContainer,
+    components: {
+      GlColumnChart,
+    },
+    mixins: [SeriesDataMixin],
+    data() {
+      return {
+        chartData: JSON.parse(monthContainer.dataset.chartData),
+      };
+    },
+    render(h) {
+      return h(GlColumnChart, {
+        props: {
+          data: this.seriesData,
+          xAxisTitle: __('Day of month'),
+          yAxisTitle: __('No. of commits'),
+          xAxisType: 'category',
+        },
+      });
+    },
+  });
 
-  const data = {
-    datasets: [
-      {
-        data: projectChartData.languages.map(x => x.value),
-        backgroundColor: projectChartData.languages.map(x => x.color),
-        hoverBackgroundColor: projectChartData.languages.map(x => x.highlight),
+  // eslint-disable-next-line no-new
+  new Vue({
+    el: weekdayContainer,
+    components: {
+      GlColumnChart,
+    },
+    data() {
+      return {
+        chartData: JSON.parse(weekdayContainer.dataset.chartData),
+      };
+    },
+    computed: {
+      seriesData() {
+        const weekDays = reorderWeekDays(this.chartData, gon.first_day_of_week);
+        const data = Object.keys(weekDays).reduce((acc, key) => {
+          acc.push([key, weekDays[key]]);
+          return acc;
+        }, []);
+        return { full: data };
       },
-    ],
-    labels: projectChartData.languages.map(x => x.label),
-  };
-  const ctx = $('#languages-chart')
-    .get(0)
-    .getContext('2d');
-  pieChart(ctx, data);
+    },
+    render(h) {
+      return h(GlColumnChart, {
+        props: {
+          data: this.seriesData,
+          xAxisTitle: __('Weekday'),
+          yAxisTitle: __('No. of commits'),
+          xAxisType: 'category',
+        },
+      });
+    },
+  });
+
+  // eslint-disable-next-line no-new
+  new Vue({
+    el: hourContainer,
+    components: {
+      GlColumnChart,
+    },
+    mixins: [SeriesDataMixin],
+    data() {
+      return {
+        chartData: JSON.parse(hourContainer.dataset.chartData),
+      };
+    },
+    render(h) {
+      return h(GlColumnChart, {
+        props: {
+          data: this.seriesData,
+          xAxisTitle: __('Hour (UTC)'),
+          yAxisTitle: __('No. of commits'),
+          xAxisType: 'category',
+        },
+      });
+    },
+  });
 });
diff --git a/app/assets/javascripts/pages/projects/graphs/charts/series_data_mixin.js b/app/assets/javascripts/pages/projects/graphs/charts/series_data_mixin.js
new file mode 100644
index 00000000000..941427a1ac3
--- /dev/null
+++ b/app/assets/javascripts/pages/projects/graphs/charts/series_data_mixin.js
@@ -0,0 +1,11 @@
+export default {
+  computed: {
+    seriesData() {
+      const data = Object.keys(this.chartData).reduce((acc, key) => {
+        acc.push([key, this.chartData[key]]);
+        return acc;
+      }, []);
+      return { full: data };
+    },
+  },
+};
diff --git a/app/controllers/projects/alerting/notifications_controller.rb b/app/controllers/projects/alerting/notifications_controller.rb
new file mode 100644
index 00000000000..1fe31863469
--- /dev/null
+++ b/app/controllers/projects/alerting/notifications_controller.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+module Projects
+  module Alerting
+    class NotificationsController < Projects::ApplicationController
+      respond_to :json
+
+      skip_before_action :verify_authenticity_token
+      skip_before_action :project
+
+      prepend_before_action :repository, :project_without_auth
+
+      def create
+        token = extract_alert_manager_token(request)
+        result = notify_service.execute(token)
+
+        head(response_status(result))
+      end
+
+      private
+
+      def project_without_auth
+        @project ||= Project
+          .find_by_full_path("#{params[:namespace_id]}/#{params[:project_id]}")
+      end
+
+      def extract_alert_manager_token(request)
+        Doorkeeper::OAuth::Token.from_bearer_authorization(request)
+      end
+
+      def notify_service
+        Projects::Alerting::NotifyService
+          .new(project, current_user, notification_payload)
+      end
+
+      def response_status(result)
+        return :ok if result.success?
+
+        result.http_status
+      end
+
+      def notification_payload
+        params.permit![:notification]
+      end
+    end
+  end
+end
diff --git a/app/helpers/blob_helper.rb b/app/helpers/blob_helper.rb
index 7c0f4da355d..77a320f8925 100644
--- a/app/helpers/blob_helper.rb
+++ b/app/helpers/blob_helper.rb
@@ -27,7 +27,7 @@ module BlobHelper
         "#{current_user.namespace.full_path}/#{project.path}"
       end
 
-    segments = [ide_path, 'project', project_path, 'edit', ref]
+    segments = [ide_path, 'project', project_path, 'edit', encode_ide_path(ref)]
     segments.concat(['-', encode_ide_path(path)]) if path.present?
     File.join(segments)
   end
diff --git a/app/models/container_repository.rb b/app/models/container_repository.rb
index 152aa7b3218..fcbfda8fbc2 100644
--- a/app/models/container_repository.rb
+++ b/app/models/container_repository.rb
@@ -77,7 +77,11 @@ class ContainerRepository < ApplicationRecord
   end
 
   def delete_tag_by_digest(digest)
-    client.delete_repository_tag(self.path, digest)
+    client.delete_repository_tag_by_digest(self.path, digest)
+  end
+
+  def delete_tag_by_name(name)
+    client.delete_repository_tag_by_name(self.path, name)
   end
 
   def self.build_from_path(path)
diff --git a/app/models/project.rb b/app/models/project.rb
index 44701ef792a..b2ac9c99ab6 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -138,6 +138,7 @@ class Project < ApplicationRecord
   has_many :boards
 
   # Project services
+  has_one :alerts_service
   has_one :campfire_service
   has_one :discord_service
   has_one :drone_ci_service
@@ -2330,6 +2331,10 @@ class Project < ApplicationRecord
     protected_branches.limit(limit)
   end
 
+  def alerts_service_activated?
+    false
+  end
+
   private
 
   def closest_namespace_setting(name)
diff --git a/app/models/project_services/alerts_service.rb b/app/models/project_services/alerts_service.rb
new file mode 100644
index 00000000000..2f7902d9617
--- /dev/null
+++ b/app/models/project_services/alerts_service.rb
@@ -0,0 +1,78 @@
+# frozen_string_literal: true
+
+require 'securerandom'
+
+class AlertsService < Service
+  has_one :data, class_name: 'AlertsServiceData', autosave: true,
+    inverse_of: :service, foreign_key: :service_id
+
+  attribute :token, :string
+  delegate :token, :token=, :token_changed?, :token_was, to: :data
+
+  validates :token, presence: true, if: :activated?
+
+  before_validation :prevent_token_assignment
+  before_validation :ensure_token, if: :activated?
+
+  def url
+    url_helpers.project_alerts_notify_url(project, format: :json)
+  end
+
+  def json_fields
+    super + %w(token)
+  end
+
+  def editable?
+    false
+  end
+
+  def show_active_box?
+    false
+  end
+
+  def can_test?
+    false
+  end
+
+  def title
+    _('Alerts endpoint')
+  end
+
+  def description
+    _('Receive alerts on GitLab from any source')
+  end
+
+  def detailed_description
+    description
+  end
+
+  def self.to_param
+    'alerts'
+  end
+
+  def self.supported_events
+    %w()
+  end
+
+  def data
+    super || build_data
+  end
+
+  private
+
+  def prevent_token_assignment
+    self.token = token_was if token.present? && token_changed?
+  end
+
+  def ensure_token
+    self.token = generate_token if token.blank?
+  end
+
+  def generate_token
+    SecureRandom.hex
+  end
+
+  def url_helpers
+    Gitlab::Routing.url_helpers
+  end
+end
diff --git a/app/models/project_services/alerts_service_data.rb b/app/models/project_services/alerts_service_data.rb
new file mode 100644
index 00000000000..5a52ed83455
--- /dev/null
+++ b/app/models/project_services/alerts_service_data.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+require 'securerandom'
+
+class AlertsServiceData < ApplicationRecord
+  belongs_to :service, class_name: 'AlertsService'
+
+  validates :service, presence: true
+
+  attr_encrypted :token,
+    mode: :per_attribute_iv,
+    key: Settings.attr_encrypted_db_key_base_truncated,
+    algorithm: 'aes-256-gcm'
+end
diff --git a/app/services/projects/alerting/notify_service.rb b/app/services/projects/alerting/notify_service.rb
new file mode 100644
index 00000000000..4ca3b154e4b
--- /dev/null
+++ b/app/services/projects/alerting/notify_service.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+module Projects
+  module Alerting
+    class NotifyService < BaseService
+      include Gitlab::Utils::StrongMemoize
+
+      def execute(token)
+        return forbidden unless alerts_service_activated?
+        return unauthorized unless valid_token?(token)
+
+        process_incident_issues
+
+        ServiceResponse.success
+      rescue Gitlab::Alerting::NotificationPayloadParser::BadPayloadError
+        bad_request
+      end
+
+      private
+
+      delegate :alerts_service, :alerts_service_activated?, to: :project
+
+      def process_incident_issues
+        IncidentManagement::ProcessAlertWorker
+          .perform_async(project.id, parsed_payload)
+      end
+
+      def parsed_payload
+        Gitlab::Alerting::NotificationPayloadParser.call(params.to_h)
+      end
+
+      def valid_token?(token)
+        token == alerts_service.token
+      end
+
+      def bad_request
+        ServiceResponse.error(message: 'Bad Request', http_status: 400)
+      end
+
+      def unauthorized
+        ServiceResponse.error(message: 'Unauthorized', http_status: 401)
+      end
+
+      def forbidden
+        ServiceResponse.error(message: 'Forbidden', http_status: 403)
+      end
+    end
+  end
+end
diff --git a/app/services/projects/container_repository/delete_tags_service.rb b/app/services/projects/container_repository/delete_tags_service.rb
index 88ff3c2c9df..d19f275e928 100644
--- a/app/services/projects/container_repository/delete_tags_service.rb
+++ b/app/services/projects/container_repository/delete_tags_service.rb
@@ -14,12 +14,25 @@ module Projects
 
       private
 
+      # Delete tags by name with a single DELETE request. This is only supported
+      # by the GitLab Container Registry fork. See
+      # https://gitlab.com/gitlab-org/gitlab/-/merge_requests/23325 for details.
+      def fast_delete(container_repository, tag_names)
+        deleted_tags = tag_names.select do |name|
+          container_repository.delete_tag_by_name(name)
+        end
+
+        deleted_tags.any? ? success(deleted: deleted_tags) : error('could not delete tags')
+      end
+
       # Replace a tag on the registry with a dummy tag.
       # This is a hack as the registry doesn't support deleting individual
       # tags. This code effectively pushes a dummy image and assigns the tag to it.
       # This way when the tag is deleted only the dummy image is affected.
+      # This is used to preverse compatibility with third-party registries that
+      # don't support fast delete.
       # See https://gitlab.com/gitlab-org/gitlab/issues/15737 for a discussion
-      def smart_delete(container_repository, tag_names)
+      def slow_delete(container_repository, tag_names)
         # generates the blobs for the dummy image
         dummy_manifest = container_repository.client.generate_empty_manifest(container_repository.path)
         return error('could not generate manifest') if dummy_manifest.nil?
@@ -36,6 +49,15 @@ module Projects
         end
       end
 
+      def smart_delete(container_repository, tag_names)
+        fast_delete_enabled = Feature.enabled?(:container_registry_fast_tag_delete, default_enabled: true)
+        if fast_delete_enabled && container_repository.client.supports_tag_delete?
+          fast_delete(container_repository, tag_names)
+        else
+          slow_delete(container_repository, tag_names)
+        end
+      end
+
       # update the manifests of the tags with the new dummy image
       def replace_tag_manifests(container_repository, dummy_manifest, tag_names)
         deleted_tags = {}
diff --git a/app/services/projects/lsif_data_service.rb b/app/services/projects/lsif_data_service.rb
index 00103f364bf..1282a0736e7 100644
--- a/app/services/projects/lsif_data_service.rb
+++ b/app/services/projects/lsif_data_service.rb
@@ -2,7 +2,8 @@
 
 module Projects
   class LsifDataService
-    attr_reader :file, :project, :path, :commit_id
+    attr_reader :file, :project, :path, :commit_id,
+      :docs, :doc_ranges, :ranges, :def_refs
 
     CACHE_EXPIRE_IN = 1.hour
 
@@ -14,19 +15,18 @@ module Projects
     end
 
     def execute
-      docs, doc_ranges, ranges =
-        fetch_data.values_at('docs', 'doc_ranges', 'ranges')
-
-      doc_id = doc_id_from(docs)
+      fetch_data!
 
       doc_ranges[doc_id]&.map do |range_id|
-        line_data, column_data = ranges[range_id]['loc']
+        location, ref_id = ranges[range_id].values_at('loc', 'ref_id')
+        line_data, column_data = location
 
         {
           start_line: line_data.first,
           end_line: line_data.last,
           start_char: column_data.first,
-          end_char: column_data.last
+          end_char: column_data.last,
+          definition_url: definition_url_for(def_refs[ref_id])
         }
       end
     end
@@ -47,8 +47,17 @@ module Projects
       end
     end
 
-    def doc_id_from(docs)
-      docs.reduce(nil) do |doc_id, (id, doc_path)|
+    def fetch_data!
+      data = fetch_data
+
+      @docs = data['docs']
+      @doc_ranges = data['doc_ranges']
+      @ranges = data['ranges']
+      @def_refs = data['def_refs']
+    end
+
+    def doc_id
+      @doc_id ||= docs.reduce(nil) do |doc_id, (id, doc_path)|
         next doc_id unless doc_path =~ /#{path}$/
 
         if doc_id.nil? || docs[doc_id].size > doc_path.size
@@ -58,5 +67,24 @@ module Projects
         doc_id
       end
     end
+
+    def dir_absolute_path
+      @dir_absolute_path ||= docs[doc_id]&.delete_suffix(path)
+    end
+
+    def definition_url_for(ref_id)
+      return unless range = ranges[ref_id]
+
+      def_doc_id, location = range.values_at('doc_id', 'loc')
+      localized_doc_url = docs[def_doc_id].delete_prefix(dir_absolute_path)
+
+      # location is stored as [[start_line, end_line], [start_char, end_char]]
+      start_line = location.first.first
+
+      line_anchor = "L#{start_line + 1}"
+      definition_ref_path = [commit_id, localized_doc_url].join('/')
+
+      Gitlab::Routing.url_helpers.project_blob_path(project, definition_ref_path, anchor: line_anchor)
+    end
   end
 end
diff --git a/app/views/projects/graphs/charts.html.haml b/app/views/projects/graphs/charts.html.haml
index 93a43b5d1ea..b38449b3ab9 100644
--- a/app/views/projects/graphs/charts.html.haml
+++ b/app/views/projects/graphs/charts.html.haml
@@ -7,20 +7,7 @@
   %p
     = _("Measured in bytes of code. Excludes generated and vendored code.")
 
-  .row
-    .col-md-4
-      %ul.bordered-list
-        - @languages.each do |language|
-          %li
-            %span{ style: "color: #{language[:color]}" }
-              = icon('circle')
-            &nbsp;
-            = language[:label]
-            .float-right
-              = language[:value]
-              \%
-    .col-md-8
-      %canvas#languages-chart{ height: 400 }
+  #js-languages-chart{ data: { chart_data: @languages.to_json.html_safe } }
 
 .repo-charts
   .sub-header-block.border-top
@@ -60,27 +47,18 @@
       %p.slead
         = _("Commits per day of month")
       %div
-        %canvas#month-chart
+        #js-month-chart{ data: { chart_data: @commits_per_month.to_json.html_safe } }
   .row
     .col-md-6
     .col-md-6
       %p.slead
         = _("Commits per weekday")
       %div
-        %canvas#weekday-chart
+        #js-weekday-chart{ data: { chart_data: @commits_per_week_days.to_json.html_safe } }
   .row
     .col-md-6
     .col-md-6
       %p.slead
         = _("Commits per day hour (UTC)")
       %div
-        %canvas#hour-chart
-
--# haml-lint:disable InlineJavaScript
-%script#projectChartData{ type: "application/json" }
-  - projectChartData = {};
-  - projectChartData['hour'] = @commits_per_time
-  - projectChartData['weekDays'] = @commits_per_week_days
-  - projectChartData['month'] = @commits_per_month
-  - projectChartData['languages'] = @languages
-  = projectChartData.to_json.html_safe
+        #js-hour-chart{ data: { chart_data: @commits_per_time.to_json.html_safe } }
diff --git a/changelogs/unreleased/31832-improve-performance-of-the-container-registry-delete-tags-api.yml b/changelogs/unreleased/31832-improve-performance-of-the-container-registry-delete-tags-api.yml
new file mode 100644
index 00000000000..a803f08b884
--- /dev/null
+++ b/changelogs/unreleased/31832-improve-performance-of-the-container-registry-delete-tags-api.yml
@@ -0,0 +1,5 @@
+---
+title: Improve performance of the Container Registry delete tags API
+merge_request: 23325
+author:
+type: performance
diff --git a/changelogs/unreleased/35473-webide-hash-in-branch-name.yml b/changelogs/unreleased/35473-webide-hash-in-branch-name.yml
new file mode 100644
index 00000000000..f49ead4fe28
--- /dev/null
+++ b/changelogs/unreleased/35473-webide-hash-in-branch-name.yml
@@ -0,0 +1,5 @@
+---
+title: 'WebIDE: Support # in branch names'
+merge_request: 24717
+author:
+type: changed
diff --git a/changelogs/unreleased/improve-background-migration-check.yml b/changelogs/unreleased/improve-background-migration-check.yml
new file mode 100644
index 00000000000..5734f53f86f
--- /dev/null
+++ b/changelogs/unreleased/improve-background-migration-check.yml
@@ -0,0 +1,5 @@
+---
+title: Add more accurate way of counting remaining background migrations before upgrading
+merge_request:
+author:
+type: fixed
diff --git a/config/initializers/rack_timeout.rb b/config/initializers/rack_timeout.rb
index 1f1264de208..5d5a5fcf980 100644
--- a/config/initializers/rack_timeout.rb
+++ b/config/initializers/rack_timeout.rb
@@ -12,6 +12,8 @@
 if Gitlab::Runtime.puma? && !Rails.env.test?
   require 'rack/timeout/base'
 
+  Rack::Timeout::Logger.level = Logger::ERROR
+
   Gitlab::Application.configure do |config|
     config.middleware.insert_before(Rack::Runtime, Rack::Timeout,
                                     service_timeout: ENV.fetch('GITLAB_RAILS_RACK_TIMEOUT', 60).to_i,
diff --git a/config/routes/project.rb b/config/routes/project.rb
index 73625416b4b..f153082f118 100644
--- a/config/routes/project.rb
+++ b/config/routes/project.rb
@@ -323,6 +323,8 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
         end
       end
 
+      post 'alerts/notify', to: 'alerting/notifications#create'
+
       resources :pipelines, only: [:index, :new, :create, :show, :destroy] do
         collection do
           resource :pipelines_settings, path: 'settings', only: [:show, :update]
diff --git a/doc/administration/geo/replication/updating_the_geo_nodes.md b/doc/administration/geo/replication/updating_the_geo_nodes.md
index 426eb54c66a..d094ccf3e54 100644
--- a/doc/administration/geo/replication/updating_the_geo_nodes.md
+++ b/doc/administration/geo/replication/updating_the_geo_nodes.md
@@ -11,6 +11,8 @@ Updating Geo nodes involves performing:
 Depending on which version of Geo you are updating to/from, there may be
 different steps.
 
+- [Updating to GitLab 12.7](version_specific_updates.md#updating-to-gitlab-127)
+- [Updating to GitLab 12.2](version_specific_updates.md#updating-to-gitlab-122)
 - [Updating to GitLab 12.1](version_specific_updates.md#updating-to-gitlab-121)
 - [Updating to GitLab 10.8](version_specific_updates.md#updating-to-gitlab-108)
 - [Updating to GitLab 10.6](version_specific_updates.md#updating-to-gitlab-106)
diff --git a/doc/update/README.md b/doc/update/README.md
index 9762ecffc6d..1bd2770b957 100644
--- a/doc/update/README.md
+++ b/doc/update/README.md
@@ -116,14 +116,14 @@ following command:
 **For Omnibus installations**
 
 ```shell
-sudo gitlab-rails runner -e production 'puts Sidekiq::Queue.new("background_migration").size'
+sudo gitlab-rails runner -e production 'puts Gitlab::BackgroundMigration.remaining'
 ```
 
 **For installations from source**
 
 ```
 cd /home/git/gitlab
-sudo -u git -H bundle exec rails runner -e production 'puts Sidekiq::Queue.new("background_migration").size'
+sudo -u git -H bundle exec rails runner -e production 'puts Gitlab::BackgroundMigration.remaining'
 ```
 
 ## Upgrading to a new major version
diff --git a/lib/container_registry/client.rb b/lib/container_registry/client.rb
index bc0347f6ea1..12f7f04634f 100644
--- a/lib/container_registry/client.rb
+++ b/lib/container_registry/client.rb
@@ -6,6 +6,8 @@ require 'digest'
 
 module ContainerRegistry
   class Client
+    include Gitlab::Utils::StrongMemoize
+
     attr_accessor :uri
 
     DOCKER_DISTRIBUTION_MANIFEST_V2_TYPE = 'application/vnd.docker.distribution.manifest.v2+json'
@@ -35,10 +37,25 @@ module ContainerRegistry
       response.headers['docker-content-digest'] if response.success?
     end
 
-    def delete_repository_tag(name, reference)
-      result = faraday.delete("/v2/#{name}/manifests/#{reference}")
+    def delete_repository_tag_by_digest(name, reference)
+      delete_if_exists("/v2/#{name}/manifests/#{reference}")
+    end
 
-      result.success? || result.status == 404
+    def delete_repository_tag_by_name(name, reference)
+      delete_if_exists("/v2/#{name}/tags/reference/#{reference}")
+    end
+
+    # Check if the registry supports tag deletion. This is only supported by the
+    # GitLab registry fork. The fastest and safest way to check this is to send
+    # an OPTIONS request to /v2/<name>/tags/reference/<tag>, using a random
+    # repository name and tag (the registry won't check if they exist).
+    # Registries that support tag deletion will reply with a 200 OK and include
+    # the DELETE method in the Allow header. Others reply with an 404 Not Found.
+    def supports_tag_delete?
+      strong_memoize(:supports_tag_delete) do
+        response = faraday.run_request(:options, '/v2/name/tags/reference/tag', '', {})
+        response.success? && response.headers['allow']&.include?('DELETE')
+      end
     end
 
     def upload_raw_blob(path, blob)
@@ -86,9 +103,7 @@ module ContainerRegistry
     end
 
     def delete_blob(name, digest)
-      result = faraday.delete("/v2/#{name}/blobs/#{digest}")
-
-      result.success? || result.status == 404
+      delete_if_exists("/v2/#{name}/blobs/#{digest}")
     end
 
     def put_tag(name, reference, manifest)
@@ -163,6 +178,12 @@ module ContainerRegistry
         conn.adapter :net_http
       end
     end
+
+    def delete_if_exists(path)
+      result = faraday.delete(path)
+
+      result.success? || result.status == 404
+    end
   end
 end
 
diff --git a/lib/container_registry/tag.rb b/lib/container_registry/tag.rb
index 3c308258a3f..e1a2891e43a 100644
--- a/lib/container_registry/tag.rb
+++ b/lib/container_registry/tag.rb
@@ -118,7 +118,7 @@ module ContainerRegistry
     def unsafe_delete
       return unless digest
 
-      client.delete_repository_tag(repository.path, digest)
+      client.delete_repository_tag_by_digest(repository.path, digest)
     end
   end
 end
diff --git a/lib/gitlab/background_migration.rb b/lib/gitlab/background_migration.rb
index ddd6b11eebb..6a16c37e880 100644
--- a/lib/gitlab/background_migration.rb
+++ b/lib/gitlab/background_migration.rb
@@ -58,6 +58,14 @@ module Gitlab
       migration_class_for(class_name).new.perform(*arguments)
     end
 
+    def self.remaining
+      scheduled = Sidekiq::ScheduledSet.new.count do |job|
+        job.queue == self.queue
+      end
+
+      scheduled + Sidekiq::Queue.new(self.queue).size
+    end
+
     def self.exists?(migration_class, additional_queues = [])
       enqueued = Sidekiq::Queue.new(self.queue)
       scheduled = Sidekiq::ScheduledSet.new
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index fceb327aed1..6c5d4e6785e 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -5996,6 +5996,9 @@ msgstr ""
 msgid "Date range cannot exceed %{maxDateRange} days."
 msgstr ""
 
+msgid "Day of month"
+msgstr ""
+
 msgid "DayTitle|F"
 msgstr ""
 
@@ -10004,6 +10007,9 @@ msgstr ""
 msgid "Hook was successfully updated."
 msgstr ""
 
+msgid "Hour (UTC)"
+msgstr ""
+
 msgid "Housekeeping"
 msgstr ""
 
@@ -12803,6 +12809,9 @@ msgstr ""
 msgid "No, not interested right now"
 msgstr ""
 
+msgid "No. of commits"
+msgstr ""
+
 msgid "Nobody has starred this repository yet"
 msgstr ""
 
@@ -13531,6 +13540,9 @@ msgstr ""
 msgid "People without permission will never get a notification."
 msgstr ""
 
+msgid "Percentage"
+msgstr ""
+
 msgid "Perform advanced options such as changing path, transferring, or removing the group."
 msgstr ""
 
@@ -20797,6 +20809,9 @@ msgstr ""
 msgid "Used by members to sign in to your group in GitLab"
 msgstr ""
 
+msgid "Used programming language"
+msgstr ""
+
 msgid "Used to help configure your identity provider"
 msgstr ""
 
@@ -21486,6 +21501,9 @@ msgstr ""
 msgid "Wednesday"
 msgstr ""
 
+msgid "Weekday"
+msgstr ""
+
 msgid "Weeks"
 msgstr ""
 
diff --git a/spec/controllers/projects/alerting/notifications_controller_spec.rb b/spec/controllers/projects/alerting/notifications_controller_spec.rb
new file mode 100644
index 00000000000..a56ac59215f
--- /dev/null
+++ b/spec/controllers/projects/alerting/notifications_controller_spec.rb
@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Projects::Alerting::NotificationsController do
+  let_it_be(:project) { create(:project) }
+  let_it_be(:environment) { create(:environment, project: project) }
+
+  describe 'POST #create' do
+    let(:service_response) { ServiceResponse.success }
+    let(:notify_service) { instance_double(Projects::Alerting::NotifyService, execute: service_response) }
+
+    around do |example|
+      ForgeryProtection.with_forgery_protection { example.run }
+    end
+
+    before do
+      allow(Projects::Alerting::NotifyService).to receive(:new).and_return(notify_service)
+    end
+
+    def make_request(body = {})
+      post :create, params: project_params, body: body.to_json, as: :json
+    end
+
+    context 'when notification service succeeds' do
+      let(:payload) do
+        {
+          title: 'Alert title',
+          hosts: 'https://gitlab.com'
+        }
+      end
+
+      let(:permitted_params) { ActionController::Parameters.new(payload).permit! }
+
+      it 'responds with ok' do
+        make_request
+
+        expect(response).to have_gitlab_http_status(:ok)
+      end
+
+      it 'does not pass excluded parameters to the notify service' do
+        make_request(payload)
+
+        expect(Projects::Alerting::NotifyService)
+          .to have_received(:new)
+          .with(project, nil, permitted_params)
+      end
+    end
+
+    context 'when notification service fails' do
+      let(:service_response) { ServiceResponse.error(message: 'Unauthorized', http_status: 401) }
+
+      it 'responds with the service response' do
+        make_request
+
+        expect(response).to have_gitlab_http_status(:unauthorized)
+      end
+    end
+
+    context 'bearer token' do
+      context 'when set' do
+        it 'extracts bearer token' do
+          request.headers['HTTP_AUTHORIZATION'] = 'Bearer some token'
+
+          expect(notify_service).to receive(:execute).with('some token')
+
+          make_request
+        end
+
+        it 'pass nil if cannot extract a non-bearer token' do
+          request.headers['HTTP_AUTHORIZATION'] = 'some token'
+
+          expect(notify_service).to receive(:execute).with(nil)
+
+          make_request
+        end
+      end
+
+      context 'when missing' do
+        it 'passes nil' do
+          expect(notify_service).to receive(:execute).with(nil)
+
+          make_request
+        end
+      end
+    end
+  end
+
+  def project_params(opts = {})
+    opts.reverse_merge(namespace_id: project.namespace, project_id: project)
+  end
+end
diff --git a/spec/factories/services.rb b/spec/factories/services.rb
index 5d62b3cb9c9..ffa51abf26f 100644
--- a/spec/factories/services.rb
+++ b/spec/factories/services.rb
@@ -44,6 +44,16 @@ FactoryBot.define do
     end
   end
 
+  factory :alerts_service do
+    project
+    type { 'AlertsService' }
+    active { true }
+
+    trait :inactive do
+      active { false }
+    end
+  end
+
   factory :drone_ci_service do
     project
     active { true }
diff --git a/spec/features/projects/graph_spec.rb b/spec/features/projects/graph_spec.rb
index 562dbeb816a..6b2a9a6b852 100644
--- a/spec/features/projects/graph_spec.rb
+++ b/spec/features/projects/graph_spec.rb
@@ -22,20 +22,12 @@ describe 'Project Graph', :js do
     end
   end
 
-  shared_examples 'page should have languages graphs' do
-    it 'renders languages' do
-      expect(page).to have_content(/Ruby 66.* %/)
-      expect(page).to have_content(/JavaScript 22.* %/)
-    end
-  end
-
   context 'commits graph' do
     before do
       visit commits_project_graph_path(project, 'master')
     end
 
     it_behaves_like 'page should have commits graphs'
-    it_behaves_like 'page should have languages graphs'
   end
 
   context 'languages graph' do
@@ -44,7 +36,6 @@ describe 'Project Graph', :js do
     end
 
     it_behaves_like 'page should have commits graphs'
-    it_behaves_like 'page should have languages graphs'
   end
 
   context 'charts graph' do
@@ -53,7 +44,6 @@ describe 'Project Graph', :js do
     end
 
     it_behaves_like 'page should have commits graphs'
-    it_behaves_like 'page should have languages graphs'
   end
 
   context 'chart graph with HTML escaped branch name' do
diff --git a/spec/frontend/blob/components/__snapshots__/blob_header_spec.js.snap b/spec/frontend/blob/components/__snapshots__/blob_header_spec.js.snap
index b77ca28b9d8..2878ad492a4 100644
--- a/spec/frontend/blob/components/__snapshots__/blob_header_spec.js.snap
+++ b/spec/frontend/blob/components/__snapshots__/blob_header_spec.js.snap
@@ -12,13 +12,12 @@ exports[`Blob Header Default Actions rendering matches the snapshot 1`] = `
     class="file-actions d-none d-sm-block"
   >
     <viewer-switcher-stub
-      activeviewer="rich"
-      blob="[object Object]"
+      value="simple"
     />
       
     <default-actions-stub
-      activeviewer="rich"
-      blob="[object Object]"
+      activeviewer="simple"
+      rawpath="/flightjs/flight/snippets/51/raw"
     />
   </div>
 </div>
diff --git a/spec/frontend/blob/components/blob_header_default_actions_spec.js b/spec/frontend/blob/components/blob_header_default_actions_spec.js
index fe0edffd12d..5da0d40ab14 100644
--- a/spec/frontend/blob/components/blob_header_default_actions_spec.js
+++ b/spec/frontend/blob/components/blob_header_default_actions_spec.js
@@ -8,7 +8,6 @@ import {
 } from '~/blob/components/constants';
 import { GlButtonGroup, GlButton } from '@gitlab/ui';
 import { Blob } from './mock_data';
-import eventHub from '~/blob/event_hub';
 
 describe('Blob Header Default Actions', () => {
   let wrapper;
@@ -16,10 +15,10 @@ describe('Blob Header Default Actions', () => {
   let buttons;
   const hrefPrefix = 'http://localhost';
 
-  function createComponent(blobProps = {}, propsData = {}) {
+  function createComponent(propsData = {}) {
     wrapper = mount(BlobHeaderActions, {
       propsData: {
-        blob: Object.assign({}, Blob, blobProps),
+        rawPath: Blob.rawPath,
         ...propsData,
       },
     });
@@ -60,12 +59,9 @@ describe('Blob Header Default Actions', () => {
     });
 
     it('renders "Copy file contents" button as disables if the viewer is Rich', () => {
-      createComponent(
-        {},
-        {
-          activeViewer: RICH_BLOB_VIEWER,
-        },
-      );
+      createComponent({
+        activeViewer: RICH_BLOB_VIEWER,
+      });
       buttons = wrapper.findAll(GlButton);
 
       expect(buttons.at(0).attributes('disabled')).toBeTruthy();
@@ -74,10 +70,10 @@ describe('Blob Header Default Actions', () => {
 
   describe('functionally', () => {
     it('emits an event when a Copy Contents button is clicked', () => {
-      jest.spyOn(eventHub, '$emit');
+      jest.spyOn(wrapper.vm, '$emit');
       buttons.at(0).vm.$emit('click');
 
-      expect(eventHub.$emit).toHaveBeenCalledWith('copy');
+      expect(wrapper.vm.$emit).toHaveBeenCalledWith('copy');
     });
   });
 });
diff --git a/spec/frontend/blob/components/blob_header_spec.js b/spec/frontend/blob/components/blob_header_spec.js
index 7d1443fb069..d410ef10fc9 100644
--- a/spec/frontend/blob/components/blob_header_spec.js
+++ b/spec/frontend/blob/components/blob_header_spec.js
@@ -3,7 +3,6 @@ import BlobHeader from '~/blob/components/blob_header.vue';
 import ViewerSwitcher from '~/blob/components/blob_header_viewer_switcher.vue';
 import DefaultActions from '~/blob/components/blob_header_default_actions.vue';
 import BlobFilepath from '~/blob/components/blob_header_filepath.vue';
-import eventHub from '~/blob/event_hub';
 
 import { Blob } from './mock_data';
 
@@ -21,10 +20,6 @@ describe('Blob Header Default Actions', () => {
     });
   }
 
-  beforeEach(() => {
-    createComponent();
-  });
-
   afterEach(() => {
     wrapper.destroy();
   });
@@ -96,37 +91,48 @@ describe('Blob Header Default Actions', () => {
 
   describe('functionality', () => {
     const newViewer = 'Foo Bar';
+    const activeViewerType = 'Alpha Beta';
 
-    it('listens to "switch-view" event when viewer switcher is shown and updates activeViewer', () => {
-      expect(wrapper.vm.showViewerSwitcher).toBe(true);
-      eventHub.$emit('switch-viewer', newViewer);
-
-      return wrapper.vm.$nextTick().then(() => {
-        expect(wrapper.vm.activeViewer).toBe(newViewer);
-      });
-    });
-
-    it('does not update active viewer if the switcher is not shown', () => {
-      const activeViewer = 'Alpha Beta';
+    const factory = (hideViewerSwitcher = false) => {
       createComponent(
         {},
+        {},
         {
-          data() {
-            return {
-              activeViewer,
-            };
-          },
-        },
-        {
-          hideViewerSwitcher: true,
+          activeViewerType,
+          hideViewerSwitcher,
         },
       );
+    };
+
+    it('by default sets viewer data based on activeViewerType', () => {
+      factory();
+      expect(wrapper.vm.viewer).toBe(activeViewerType);
+    });
+
+    it('sets viewer to null if the viewer switcher should be hidden', () => {
+      factory(true);
+      expect(wrapper.vm.viewer).toBe(null);
+    });
+
+    it('watches the changes in viewer data and emits event when the change is registered', () => {
+      factory();
+      jest.spyOn(wrapper.vm, '$emit');
+      wrapper.vm.viewer = newViewer;
+
+      return wrapper.vm.$nextTick().then(() => {
+        expect(wrapper.vm.$emit).toHaveBeenCalledWith('viewer-changed', newViewer);
+      });
+    });
+
+    it('does not emit event if the switcher is not rendered', () => {
+      factory(true);
 
       expect(wrapper.vm.showViewerSwitcher).toBe(false);
-      eventHub.$emit('switch-viewer', newViewer);
+      jest.spyOn(wrapper.vm, '$emit');
+      wrapper.vm.viewer = newViewer;
 
       return wrapper.vm.$nextTick().then(() => {
-        expect(wrapper.vm.activeViewer).toBe(activeViewer);
+        expect(wrapper.vm.$emit).not.toHaveBeenCalled();
       });
     });
   });
diff --git a/spec/frontend/blob/components/blob_header_viewer_switcher_spec.js b/spec/frontend/blob/components/blob_header_viewer_switcher_spec.js
index 88e9eeea994..f1a7ac8b21a 100644
--- a/spec/frontend/blob/components/blob_header_viewer_switcher_spec.js
+++ b/spec/frontend/blob/components/blob_header_viewer_switcher_spec.js
@@ -7,18 +7,13 @@ import {
   SIMPLE_BLOB_VIEWER_TITLE,
 } from '~/blob/components/constants';
 import { GlButtonGroup, GlButton } from '@gitlab/ui';
-import { Blob } from './mock_data';
-import eventHub from '~/blob/event_hub';
 
 describe('Blob Header Viewer Switcher', () => {
   let wrapper;
 
-  function createComponent(blobProps = {}, propsData = {}) {
+  function createComponent(propsData = {}) {
     wrapper = mount(BlobHeaderViewerSwitcher, {
-      propsData: {
-        blob: Object.assign({}, Blob, blobProps),
-        ...propsData,
-      },
+      propsData,
     });
   }
 
@@ -29,7 +24,7 @@ describe('Blob Header Viewer Switcher', () => {
   describe('intiialization', () => {
     it('is initialized with simple viewer as active', () => {
       createComponent();
-      expect(wrapper.vm.activeViewer).toBe(SIMPLE_BLOB_VIEWER);
+      expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
     });
   });
 
@@ -60,42 +55,42 @@ describe('Blob Header Viewer Switcher', () => {
     let simpleBtn;
     let richBtn;
 
-    function factory(propsOptions = {}) {
-      createComponent({}, propsOptions);
+    function factory(propsData = {}) {
+      createComponent(propsData);
       buttons = wrapper.findAll(GlButton);
       simpleBtn = buttons.at(0);
       richBtn = buttons.at(1);
 
-      jest.spyOn(eventHub, '$emit');
+      jest.spyOn(wrapper.vm, '$emit');
     }
 
     it('does not switch the viewer if the selected one is already active', () => {
       factory();
-      expect(wrapper.vm.activeViewer).toBe(SIMPLE_BLOB_VIEWER);
+      expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
       simpleBtn.vm.$emit('click');
-      expect(wrapper.vm.activeViewer).toBe(SIMPLE_BLOB_VIEWER);
-      expect(eventHub.$emit).not.toHaveBeenCalled();
+      expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
+      expect(wrapper.vm.$emit).not.toHaveBeenCalled();
     });
 
     it('emits an event when a Rich Viewer button is clicked', () => {
       factory();
-      expect(wrapper.vm.activeViewer).toBe(SIMPLE_BLOB_VIEWER);
+      expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
 
       richBtn.vm.$emit('click');
 
       return wrapper.vm.$nextTick().then(() => {
-        expect(eventHub.$emit).toHaveBeenCalledWith('switch-viewer', RICH_BLOB_VIEWER);
+        expect(wrapper.vm.$emit).toHaveBeenCalledWith('input', RICH_BLOB_VIEWER);
       });
     });
 
     it('emits an event when a Simple Viewer button is clicked', () => {
       factory({
-        activeViewer: RICH_BLOB_VIEWER,
+        value: RICH_BLOB_VIEWER,
       });
       simpleBtn.vm.$emit('click');
 
       return wrapper.vm.$nextTick().then(() => {
-        expect(eventHub.$emit).toHaveBeenCalledWith('switch-viewer', SIMPLE_BLOB_VIEWER);
+        expect(wrapper.vm.$emit).toHaveBeenCalledWith('input', SIMPLE_BLOB_VIEWER);
       });
     });
   });
diff --git a/spec/frontend/ide/ide_router_extension_spec.js b/spec/frontend/ide/ide_router_extension_spec.js
new file mode 100644
index 00000000000..3e29ecc4a90
--- /dev/null
+++ b/spec/frontend/ide/ide_router_extension_spec.js
@@ -0,0 +1,48 @@
+import VueRouter from 'vue-router';
+import IdeRouter from '~/ide/ide_router_extension';
+
+jest.mock('vue-router');
+
+describe('IDE overrides of VueRouter', () => {
+  const paths = branch => [
+    `${branch}`,
+    `/${branch}`,
+    `/${branch}/-/`,
+    `/edit/${branch}`,
+    `/edit/${branch}/-/`,
+    `/blob/${branch}`,
+    `/blob/${branch}/-/`,
+    `/blob/${branch}/-/src/merge_requests/2`,
+    `/blob/${branch}/-/src/blob/`,
+    `/tree/${branch}/-/src/blob/`,
+    `/tree/${branch}/-/src/tree/`,
+  ];
+  let router;
+
+  beforeEach(() => {
+    VueRouter.mockClear();
+    router = new IdeRouter({
+      mode: 'history',
+    });
+  });
+
+  it.each`
+    path               | expected
+    ${'#-test'}        | ${'%23-test'}
+    ${'#test'}         | ${'%23test'}
+    ${'test#'}         | ${'test%23'}
+    ${'test-#'}        | ${'test-%23'}
+    ${'test-#-hash'}   | ${'test-%23-hash'}
+    ${'test/hash#123'} | ${'test/hash%23123'}
+  `('finds project path when route is $path', ({ path, expected }) => {
+    paths(path).forEach(route => {
+      const expectedPath = route.replace(path, expected);
+
+      router.push(route);
+      expect(VueRouter.prototype.push).toHaveBeenCalledWith(expectedPath, undefined, undefined);
+
+      router.resolve(route);
+      expect(VueRouter.prototype.resolve).toHaveBeenCalledWith(expectedPath, undefined, undefined);
+    });
+  });
+});
diff --git a/spec/frontend/lib/utils/url_utility_spec.js b/spec/frontend/lib/utils/url_utility_spec.js
index 989de1a8337..d0abf2c03a9 100644
--- a/spec/frontend/lib/utils/url_utility_spec.js
+++ b/spec/frontend/lib/utils/url_utility_spec.js
@@ -28,6 +28,12 @@ describe('URL utility', () => {
       gon.relative_url_root = '';
     });
 
+    it('escapes special characters', () => {
+      expect(urlUtils.webIDEUrl('/gitlab-org/gitlab-#-foss/merge_requests/1')).toBe(
+        '/-/ide/project/gitlab-org/gitlab-%23-foss/merge_requests/1',
+      );
+    });
+
     describe('without relative_url_root', () => {
       it('returns IDE path with route', () => {
         expect(urlUtils.webIDEUrl('/gitlab-org/gitlab-foss/merge_requests/1')).toBe(
diff --git a/spec/helpers/blob_helper_spec.rb b/spec/helpers/blob_helper_spec.rb
index 2d0c4723648..a9f4b03eba5 100644
--- a/spec/helpers/blob_helper_spec.rb
+++ b/spec/helpers/blob_helper_spec.rb
@@ -244,8 +244,8 @@ describe BlobHelper do
     it 'escapes special characters' do
       Rails.application.routes.default_url_options[:script_name] = nil
 
-      expect(helper.ide_edit_path(project, "testing/#hashes", "readme.md#test")).to eq("/-/ide/project/#{project.namespace.path}/#{project.path}/edit/testing/#hashes/-/readme.md%23test")
-      expect(helper.ide_edit_path(project, "testing/#hashes", "src#/readme.md#test")).to eq("/-/ide/project/#{project.namespace.path}/#{project.path}/edit/testing/#hashes/-/src%23/readme.md%23test")
+      expect(helper.ide_edit_path(project, "testing/#hashes", "readme.md#test")).to eq("/-/ide/project/#{project.full_path}/edit/testing/%23hashes/-/readme.md%23test")
+      expect(helper.ide_edit_path(project, "testing/#hashes", "src#/readme.md#test")).to eq("/-/ide/project/#{project.full_path}/edit/testing/%23hashes/-/src%23/readme.md%23test")
     end
 
     it 'does not escape "/" character' do
diff --git a/spec/lib/container_registry/client_spec.rb b/spec/lib/container_registry/client_spec.rb
index a493b96b1e4..5d2334a6d8f 100644
--- a/spec/lib/container_registry/client_spec.rb
+++ b/spec/lib/container_registry/client_spec.rb
@@ -146,4 +146,57 @@ describe ContainerRegistry::Client do
       expect(subject).to eq 'sha256:123'
     end
   end
+
+  describe '#delete_repository_tag_by_name' do
+    subject { client.delete_repository_tag_by_name('group/test', 'a') }
+
+    context 'when the tag exists' do
+      before do
+        stub_request(:delete, "http://container-registry/v2/group/test/tags/reference/a")
+          .to_return(status: 200, body: "")
+      end
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when the tag does not exist' do
+      before do
+        stub_request(:delete, "http://container-registry/v2/group/test/tags/reference/a")
+          .to_return(status: 404, body: "")
+      end
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when an error occurs' do
+      before do
+        stub_request(:delete, "http://container-registry/v2/group/test/tags/reference/a")
+          .to_return(status: 500, body: "")
+      end
+
+      it { is_expected.to be_falsey }
+    end
+  end
+
+  describe '#supports_tag_delete?' do
+    subject { client.supports_tag_delete? }
+
+    context 'when the server supports tag deletion' do
+      before do
+        stub_request(:options, "http://container-registry/v2/name/tags/reference/tag")
+          .to_return(status: 200, body: "", headers: { 'Allow' => 'DELETE' })
+      end
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when the server does not support tag deletion' do
+      before do
+        stub_request(:options, "http://container-registry/v2/name/tags/reference/tag")
+          .to_return(status: 404, body: "")
+      end
+
+      it { is_expected.to be_falsey }
+    end
+  end
 end
diff --git a/spec/lib/gitlab/background_migration_spec.rb b/spec/lib/gitlab/background_migration_spec.rb
index 9546550bfc5..71959f54b38 100644
--- a/spec/lib/gitlab/background_migration_spec.rb
+++ b/spec/lib/gitlab/background_migration_spec.rb
@@ -165,6 +165,32 @@ describe Gitlab::BackgroundMigration do
     end
   end
 
+  describe '.remaining', :redis do
+    context 'when there are jobs remaining' do
+      let(:queue) { Array.new(12) }
+
+      before do
+        allow(Sidekiq::Queue).to receive(:new)
+          .with(described_class.queue)
+          .and_return(Array.new(12))
+
+        Sidekiq::Testing.disable! do
+          BackgroundMigrationWorker.perform_in(10.minutes, 'Foo')
+        end
+      end
+
+      it 'returns the enqueued jobs plus the scheduled jobs' do
+        expect(described_class.remaining).to eq(13)
+      end
+    end
+
+    context 'when there are no jobs remaining' do
+      it 'returns zero' do
+        expect(described_class.remaining).to be_zero
+      end
+    end
+  end
+
   describe '.exists?' do
     context 'when there are enqueued jobs present' do
       let(:queue) do
diff --git a/spec/models/chat_name_spec.rb b/spec/models/chat_name_spec.rb
index 82991937644..863c28a86fb 100644
--- a/spec/models/chat_name_spec.rb
+++ b/spec/models/chat_name_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe ChatName do
-  set(:chat_name) { create(:chat_name) }
+  let_it_be(:chat_name) { create(:chat_name) }
   subject { chat_name }
 
   it { is_expected.to belong_to(:service) }
diff --git a/spec/models/chat_team_spec.rb b/spec/models/chat_team_spec.rb
index 76beb3d506b..107fdaccc68 100644
--- a/spec/models/chat_team_spec.rb
+++ b/spec/models/chat_team_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe ChatTeam do
-  set(:chat_team) { create(:chat_team) }
+  let_it_be(:chat_team) { create(:chat_team) }
   subject { chat_team }
 
   # Associations
diff --git a/spec/models/ci/bridge_spec.rb b/spec/models/ci/bridge_spec.rb
index c9d6687f0ea..31e13122b95 100644
--- a/spec/models/ci/bridge_spec.rb
+++ b/spec/models/ci/bridge_spec.rb
@@ -3,9 +3,9 @@
 require 'spec_helper'
 
 describe Ci::Bridge do
-  set(:project) { create(:project) }
-  set(:target_project) { create(:project, name: 'project', namespace: create(:namespace, name: 'my')) }
-  set(:pipeline) { create(:ci_pipeline, project: project) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:target_project) { create(:project, name: 'project', namespace: create(:namespace, name: 'my')) }
+  let_it_be(:pipeline) { create(:ci_pipeline, project: project) }
 
   let(:bridge) do
     create(:ci_bridge, :variables, status: :created,
diff --git a/spec/models/ci/build_metadata_spec.rb b/spec/models/ci/build_metadata_spec.rb
index da95a2d30f5..588e5872cc8 100644
--- a/spec/models/ci/build_metadata_spec.rb
+++ b/spec/models/ci/build_metadata_spec.rb
@@ -3,11 +3,11 @@
 require 'spec_helper'
 
 describe Ci::BuildMetadata do
-  set(:user) { create(:user) }
-  set(:group) { create(:group) }
-  set(:project) { create(:project, :repository, group: group, build_timeout: 2000) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:group) { create(:group) }
+  let_it_be(:project) { create(:project, :repository, group: group, build_timeout: 2000) }
 
-  set(:pipeline) do
+  let_it_be(:pipeline) do
     create(:ci_pipeline, project: project,
                          sha: project.commit.id,
                          ref: project.default_branch,
diff --git a/spec/models/ci/build_spec.rb b/spec/models/ci/build_spec.rb
index 91185446488..8f2626037a1 100644
--- a/spec/models/ci/build_spec.rb
+++ b/spec/models/ci/build_spec.rb
@@ -3,11 +3,11 @@
 require 'spec_helper'
 
 describe Ci::Build do
-  set(:user) { create(:user) }
-  set(:group) { create(:group) }
-  set(:project) { create(:project, :repository, group: group) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:group, reload: true) { create(:group) }
+  let_it_be(:project, reload: true) { create(:project, :repository, group: group) }
 
-  set(:pipeline) do
+  let_it_be(:pipeline, reload: true) do
     create(:ci_pipeline, project: project,
                          sha: project.commit.id,
                          ref: project.default_branch,
@@ -3612,7 +3612,7 @@ describe Ci::Build do
   end
 
   describe '.matches_tag_ids' do
-    set(:build) { create(:ci_build, project: project, user: user) }
+    let_it_be(:build, reload: true) { create(:ci_build, project: project, user: user) }
     let(:tag_ids) { ::ActsAsTaggableOn::Tag.named_any(tag_list).ids }
 
     subject { described_class.where(id: build).matches_tag_ids(tag_ids) }
@@ -3659,7 +3659,7 @@ describe Ci::Build do
   end
 
   describe '.matches_tags' do
-    set(:build) { create(:ci_build, project: project, user: user) }
+    let_it_be(:build, reload: true) { create(:ci_build, project: project, user: user) }
 
     subject { described_class.where(id: build).with_any_tags }
 
@@ -3685,7 +3685,7 @@ describe Ci::Build do
   end
 
   describe 'pages deployments' do
-    set(:build) { create(:ci_build, project: project, user: user) }
+    let_it_be(:build, reload: true) { create(:ci_build, project: project, user: user) }
 
     context 'when job is "pages"' do
       before do
@@ -3852,7 +3852,7 @@ describe Ci::Build do
   end
 
   describe '#artifacts_metadata_entry' do
-    set(:build) { create(:ci_build, project: project) }
+    let_it_be(:build) { create(:ci_build, project: project) }
     let(:path) { 'other_artifacts_0.1.2/another-subdirectory/banana_sample.gif' }
 
     around do |example|
@@ -3952,7 +3952,7 @@ describe Ci::Build do
   end
 
   describe '#supported_runner?' do
-    set(:build) { create(:ci_build) }
+    let_it_be(:build) { create(:ci_build) }
 
     subject { build.supported_runner?(runner_features) }
 
diff --git a/spec/models/ci/build_trace_chunk_spec.rb b/spec/models/ci/build_trace_chunk_spec.rb
index ca49233dde1..f08f05a09bf 100644
--- a/spec/models/ci/build_trace_chunk_spec.rb
+++ b/spec/models/ci/build_trace_chunk_spec.rb
@@ -5,7 +5,7 @@ require 'spec_helper'
 describe Ci::BuildTraceChunk, :clean_gitlab_redis_shared_state do
   include ExclusiveLeaseHelpers
 
-  set(:build) { create(:ci_build, :running) }
+  let_it_be(:build) { create(:ci_build, :running) }
   let(:chunk_index) { 0 }
   let(:data_store) { :redis }
   let(:raw_data) { nil }
@@ -24,7 +24,7 @@ describe Ci::BuildTraceChunk, :clean_gitlab_redis_shared_state do
   context 'FastDestroyAll' do
     let(:parent) { create(:project) }
     let(:pipeline) { create(:ci_pipeline, project: parent) }
-    let(:build) { create(:ci_build, :running, :trace_live, pipeline: pipeline, project: parent) }
+    let!(:build) { create(:ci_build, :running, :trace_live, pipeline: pipeline, project: parent) }
     let(:subjects) { build.trace_chunks }
 
     describe 'Forbid #destroy and #destroy_all' do
diff --git a/spec/models/ci/processable_spec.rb b/spec/models/ci/processable_spec.rb
index 370606a73bc..f3d743fc272 100644
--- a/spec/models/ci/processable_spec.rb
+++ b/spec/models/ci/processable_spec.rb
@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe Ci::Processable do
-  set(:project) { create(:project) }
-  set(:pipeline) { create(:ci_pipeline, project: project) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:pipeline) { create(:ci_pipeline, project: project) }
 
   describe '#aggregated_needs_names' do
     let(:with_aggregated_needs) { pipeline.processables.select_with_aggregated_needs(project) }
diff --git a/spec/models/ci/runner_spec.rb b/spec/models/ci/runner_spec.rb
index 3e494d19233..0192c8ed17d 100644
--- a/spec/models/ci/runner_spec.rb
+++ b/spec/models/ci/runner_spec.rb
@@ -38,8 +38,8 @@ describe Ci::Runner do
     end
 
     context 'runner_type validations' do
-      set(:group) { create(:group) }
-      set(:project) { create(:project) }
+      let_it_be(:group) { create(:group) }
+      let_it_be(:project) { create(:project) }
       let(:group_runner) { create(:ci_runner, :group, groups: [group]) }
       let(:project_runner) { create(:ci_runner, :project, projects: [project]) }
       let(:instance_runner) { create(:ci_runner, :instance) }
@@ -322,7 +322,7 @@ describe Ci::Runner do
   end
 
   describe '#can_pick?' do
-    set(:pipeline) { create(:ci_pipeline) }
+    let_it_be(:pipeline) { create(:ci_pipeline) }
     let(:build) { create(:ci_build, pipeline: pipeline) }
     let(:runner_project) { build.project }
     let(:runner) { create(:ci_runner, :project, projects: [runner_project], tag_list: tag_list, run_untagged: run_untagged) }
diff --git a/spec/models/container_repository_spec.rb b/spec/models/container_repository_spec.rb
index 0a3065140bf..5ed812652c5 100644
--- a/spec/models/container_repository_spec.rb
+++ b/spec/models/container_repository_spec.rb
@@ -85,7 +85,7 @@ describe ContainerRepository do
     context 'when action succeeds' do
       it 'returns status that indicates success' do
         expect(repository.client)
-          .to receive(:delete_repository_tag)
+          .to receive(:delete_repository_tag_by_digest)
           .twice
           .and_return(true)
 
@@ -96,7 +96,7 @@ describe ContainerRepository do
     context 'when action fails' do
       it 'returns status that indicates failure' do
         expect(repository.client)
-          .to receive(:delete_repository_tag)
+          .to receive(:delete_repository_tag_by_digest)
           .twice
           .and_return(false)
 
@@ -105,6 +105,36 @@ describe ContainerRepository do
     end
   end
 
+  describe '#delete_tag_by_name' do
+    let(:repository) do
+      create(:container_repository, name: 'my_image',
+                                    tags: { latest: '123', rc1: '234' },
+                                    project: project)
+    end
+
+    context 'when action succeeds' do
+      it 'returns status that indicates success' do
+        expect(repository.client)
+          .to receive(:delete_repository_tag_by_name)
+          .with(repository.path, "latest")
+          .and_return(true)
+
+        expect(repository.delete_tag_by_name('latest')).to be_truthy
+      end
+    end
+
+    context 'when action fails' do
+      it 'returns status that indicates failure' do
+        expect(repository.client)
+          .to receive(:delete_repository_tag_by_name)
+          .with(repository.path, "latest")
+          .and_return(false)
+
+        expect(repository.delete_tag_by_name('latest')).to be_falsey
+      end
+    end
+  end
+
   describe '#location' do
     context 'when registry is running on a custom port' do
       before do
diff --git a/spec/models/diff_viewer/server_side_spec.rb b/spec/models/diff_viewer/server_side_spec.rb
index 27de0584b8a..0a14eae26f3 100644
--- a/spec/models/diff_viewer/server_side_spec.rb
+++ b/spec/models/diff_viewer/server_side_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe DiffViewer::ServerSide do
-  set(:project) { create(:project, :repository) }
+  let_it_be(:project) { create(:project, :repository) }
   let(:commit) { project.commit_by(oid: '570e7b2abdd848b95f2f578043fc23bd6f6fd24d') }
   let!(:diff_file) { commit.diffs.diff_file_with_new_path('files/ruby/popen.rb') }
 
diff --git a/spec/models/event_collection_spec.rb b/spec/models/event_collection_spec.rb
index c421ffa000d..e6f80a4c4d0 100644
--- a/spec/models/event_collection_spec.rb
+++ b/spec/models/event_collection_spec.rb
@@ -4,10 +4,10 @@ require 'spec_helper'
 
 describe EventCollection do
   describe '#to_a' do
-    set(:group) { create(:group) }
-    set(:project) { create(:project_empty_repo, group: group) }
-    set(:projects) { Project.where(id: project.id) }
-    set(:user) { create(:user) }
+    let_it_be(:group) { create(:group) }
+    let_it_be(:project) { create(:project_empty_repo, group: group) }
+    let_it_be(:projects) { Project.where(id: project.id) }
+    let_it_be(:user) { create(:user) }
 
     context 'with project events' do
       before do
diff --git a/spec/models/guest_spec.rb b/spec/models/guest_spec.rb
index 93862e98172..57eb077031c 100644
--- a/spec/models/guest_spec.rb
+++ b/spec/models/guest_spec.rb
@@ -3,9 +3,9 @@
 require 'spec_helper'
 
 describe Guest do
-  set(:public_project) { create(:project, :public) }
-  set(:private_project) { create(:project, :private) }
-  set(:internal_project) { create(:project, :internal) }
+  let_it_be(:public_project, reload: true) { create(:project, :public) }
+  let_it_be(:private_project) { create(:project, :private) }
+  let_it_be(:internal_project) { create(:project, :internal) }
 
   describe '.can_pull?' do
     context 'when project is private' do
diff --git a/spec/models/list_user_preference_spec.rb b/spec/models/list_user_preference_spec.rb
index 1335a3700dc..10a7bf41f4e 100644
--- a/spec/models/list_user_preference_spec.rb
+++ b/spec/models/list_user_preference_spec.rb
@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe ListUserPreference do
-  set(:user) { create(:user) }
-  set(:list) { create(:list) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:list) { create(:list) }
 
   before do
     list.update_preferences_for(user, { collapsed: true })
diff --git a/spec/models/pages_domain_spec.rb b/spec/models/pages_domain_spec.rb
index a88db3b87af..99b7c4f148a 100644
--- a/spec/models/pages_domain_spec.rb
+++ b/spec/models/pages_domain_spec.rb
@@ -352,9 +352,9 @@ describe PagesDomain do
     end
 
     context 'configuration updates when attributes change' do
-      set(:project1) { create(:project) }
-      set(:project2) { create(:project) }
-      set(:domain) { create(:pages_domain) }
+      let_it_be(:project1) { create(:project) }
+      let_it_be(:project2) { create(:project) }
+      let_it_be(:domain) { create(:pages_domain) }
 
       where(:attribute, :old_value, :new_value, :update_expected) do
         now = Time.now
@@ -402,8 +402,8 @@ describe PagesDomain do
       end
 
       context 'TLS configuration' do
-        set(:domain_without_tls) { create(:pages_domain, :without_certificate, :without_key) }
-        set(:domain) { create(:pages_domain) }
+        let_it_be(:domain_without_tls) { create(:pages_domain, :without_certificate, :without_key) }
+        let_it_be(:domain) { create(:pages_domain) }
 
         let(:cert1) { domain.certificate }
         let(:cert2) { cert1 + ' ' }
diff --git a/spec/models/project_services/alerts_service_spec.rb b/spec/models/project_services/alerts_service_spec.rb
new file mode 100644
index 00000000000..4e63ece26d8
--- /dev/null
+++ b/spec/models/project_services/alerts_service_spec.rb
@@ -0,0 +1,109 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe AlertsService do
+  let_it_be(:project) { create(:project) }
+  let(:service_params) { { project: project, active: active } }
+  let(:active) { true }
+  let(:service) { described_class.new(service_params) }
+
+  shared_context 'when active' do
+    let(:active) { true }
+  end
+
+  shared_context 'when inactive' do
+    let(:active) { false }
+  end
+
+  shared_context 'when persisted' do
+    before do
+      service.save!
+      service.reload
+    end
+  end
+
+  describe '#url' do
+    include Gitlab::Routing
+
+    subject { service.url }
+
+    it { is_expected.to eq(project_alerts_notify_url(project, format: :json)) }
+  end
+
+  describe '#json_fields' do
+    subject { service.json_fields }
+
+    it { is_expected.to eq(%w(active token)) }
+  end
+
+  describe '#as_json' do
+    subject { service.as_json(only: service.json_fields) }
+
+    it { is_expected.to eq('active' => true, 'token' => nil) }
+  end
+
+  describe '#token' do
+    shared_context 'reset token' do
+      before do
+        service.token = ''
+        service.valid?
+      end
+    end
+
+    shared_context 'assign token' do |token|
+      before do
+        service.token = token
+        service.valid?
+      end
+    end
+
+    shared_examples 'valid token' do
+      it { is_expected.to match(/\A\h{32}\z/) }
+    end
+
+    shared_examples 'no token' do
+      it { is_expected.to be_blank }
+    end
+
+    subject { service.token }
+
+    context 'when active' do
+      include_context 'when active'
+
+      context 'when resetting' do
+        let!(:previous_token) { service.token }
+
+        include_context 'reset token'
+
+        it_behaves_like 'valid token'
+
+        it { is_expected.not_to eq(previous_token) }
+      end
+
+      context 'when assigning' do
+        include_context 'assign token', 'random token'
+
+        it_behaves_like 'valid token'
+      end
+    end
+
+    context 'when inactive' do
+      include_context 'when inactive'
+
+      context 'when resetting' do
+        let!(:previous_token) { service.token }
+
+        include_context 'reset token'
+
+        it_behaves_like 'no token'
+      end
+    end
+
+    context 'when persisted' do
+      include_context 'when persisted'
+
+      it_behaves_like 'valid token'
+    end
+  end
+end
diff --git a/spec/models/project_services/microsoft_teams_service_spec.rb b/spec/models/project_services/microsoft_teams_service_spec.rb
index 83d3c8b3a70..d93b8a2cb40 100644
--- a/spec/models/project_services/microsoft_teams_service_spec.rb
+++ b/spec/models/project_services/microsoft_teams_service_spec.rb
@@ -37,9 +37,9 @@ describe MicrosoftTeamsService do
   end
 
   describe "#execute" do
-    let(:user)    { create(:user) }
+    let(:user) { create(:user) }
 
-    set(:project) { create(:project, :repository, :wiki_repo) }
+    let_it_be(:project) { create(:project, :repository, :wiki_repo) }
 
     before do
       allow(chat_service).to receive_messages(
diff --git a/spec/models/project_services/prometheus_service_spec.rb b/spec/models/project_services/prometheus_service_spec.rb
index 49005d8c681..1922bb065cf 100644
--- a/spec/models/project_services/prometheus_service_spec.rb
+++ b/spec/models/project_services/prometheus_service_spec.rb
@@ -169,7 +169,7 @@ describe PrometheusService, :use_clean_rails_memory_store_caching do
       end
 
       context 'cluster belongs to projects group' do
-        set(:group) { create(:group) }
+        let_it_be(:group) { create(:group) }
         let(:project) { create(:prometheus_project, group: group) }
         let(:cluster) { create(:cluster_for_group, :with_installed_helm, groups: [group]) }
 
diff --git a/spec/models/project_spec.rb b/spec/models/project_spec.rb
index f847cb63ddc..9dc362594dd 100644
--- a/spec/models/project_spec.rb
+++ b/spec/models/project_spec.rb
@@ -3901,7 +3901,7 @@ describe Project do
   end
 
   context 'legacy storage' do
-    set(:project) { create(:project, :repository, :legacy_storage) }
+    let_it_be(:project) { create(:project, :repository, :legacy_storage) }
     let(:gitlab_shell) { Gitlab::Shell.new }
     let(:project_storage) { project.send(:storage) }
 
@@ -4000,7 +4000,7 @@ describe Project do
   end
 
   context 'hashed storage' do
-    set(:project) { create(:project, :repository, skip_disk_validation: true) }
+    let_it_be(:project) { create(:project, :repository, skip_disk_validation: true) }
     let(:gitlab_shell) { Gitlab::Shell.new }
     let(:hash) { Digest::SHA2.hexdigest(project.id.to_s) }
     let(:hashed_prefix) { File.join('@hashed', hash[0..1], hash[2..3]) }
@@ -4090,7 +4090,7 @@ describe Project do
   end
 
   describe '#has_ci?' do
-    set(:project) { create(:project) }
+    let_it_be(:project, reload: true) { create(:project) }
     let(:repository) { double }
 
     before do
@@ -4134,7 +4134,7 @@ describe Project do
       Feature.get(:force_autodevops_on_by_default).enable_percentage_of_actors(0)
     end
 
-    set(:project) { create(:project) }
+    let_it_be(:project, reload: true) { create(:project) }
 
     subject { project.auto_devops_enabled? }
 
@@ -4269,7 +4269,7 @@ describe Project do
   end
 
   describe '#has_auto_devops_implicitly_enabled?' do
-    set(:project) { create(:project) }
+    let_it_be(:project, reload: true) { create(:project) }
 
     context 'when disabled in settings' do
       before do
@@ -4330,7 +4330,7 @@ describe Project do
   end
 
   describe '#has_auto_devops_implicitly_disabled?' do
-    set(:project) { create(:project) }
+    let_it_be(:project, reload: true) { create(:project) }
 
     before do
       allow(Feature).to receive(:enabled?).and_call_original
@@ -4408,7 +4408,7 @@ describe Project do
   end
 
   describe '#api_variables' do
-    set(:project) { create(:project) }
+    let_it_be(:project) { create(:project) }
 
     it 'exposes API v4 URL' do
       expect(project.api_variables.first[:key]).to eq 'CI_API_V4_URL'
@@ -4605,7 +4605,7 @@ describe Project do
   end
 
   describe '#write_repository_config' do
-    set(:project) { create(:project, :repository) }
+    let_it_be(:project) { create(:project, :repository) }
 
     it 'writes full path in .git/config when key is missing' do
       project.write_repository_config
@@ -4696,7 +4696,7 @@ describe Project do
   end
 
   describe '#has_active_hooks?' do
-    set(:project) { create(:project) }
+    let_it_be(:project) { create(:project) }
 
     it { expect(project.has_active_hooks?).to be_falsey }
 
@@ -4723,7 +4723,7 @@ describe Project do
   end
 
   describe '#has_active_services?' do
-    set(:project) { create(:project) }
+    let_it_be(:project) { create(:project) }
 
     it { expect(project.has_active_services?).to be_falsey }
 
@@ -5009,8 +5009,8 @@ describe Project do
   describe '#members_among' do
     let(:users) { create_list(:user, 3) }
 
-    set(:group) { create(:group) }
-    set(:project) { create(:project, namespace: group) }
+    let_it_be(:group) { create(:group) }
+    let_it_be(:project) { create(:project, namespace: group) }
 
     before do
       project.add_guest(users.first)
@@ -5584,6 +5584,14 @@ describe Project do
     end
   end
 
+  describe '#alerts_service_activated?' do
+    let!(:project) { create(:project) }
+
+    subject { project.alerts_service_activated? }
+
+    it { is_expected.to be_falsey }
+  end
+
   def rugged_config
     rugged_repo(project.repository).config
   end
diff --git a/spec/models/releases/source_spec.rb b/spec/models/releases/source_spec.rb
index c8ac8e31c97..d7af6fd90a6 100644
--- a/spec/models/releases/source_spec.rb
+++ b/spec/models/releases/source_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe Releases::Source do
-  set(:project) { create(:project, :repository, name: 'finance-cal') }
+  let_it_be(:project) { create(:project, :repository, name: 'finance-cal') }
   let(:tag_name) { 'v1.0' }
 
   describe '.all' do
diff --git a/spec/requests/api/lsif_data_spec.rb b/spec/requests/api/lsif_data_spec.rb
index ca3a30bd1d0..2e0670ded95 100644
--- a/spec/requests/api/lsif_data_spec.rb
+++ b/spec/requests/api/lsif_data_spec.rb
@@ -60,7 +60,8 @@ describe API::LsifData do
             'end_char' => 18,
             'end_line' => 8,
             'start_char' => 13,
-            'start_line' => 8
+            'start_line' => 8,
+            'definition_url' => project_blob_path(project, "#{commit.id}/morestrings/reverse.go", anchor: 'L5')
           })
         end
 
diff --git a/spec/services/projects/alerting/notify_service_spec.rb b/spec/services/projects/alerting/notify_service_spec.rb
new file mode 100644
index 00000000000..efd168a0a8a
--- /dev/null
+++ b/spec/services/projects/alerting/notify_service_spec.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Projects::Alerting::NotifyService do
+  let_it_be(:project, reload: true) { create(:project) }
+
+  shared_examples 'does not process incident issues' do |http_status:|
+    it 'does not process issues' do
+      expect(IncidentManagement::ProcessAlertWorker)
+        .not_to receive(:perform_async)
+
+      expect(subject.status).to eq(:error)
+      expect(subject.http_status).to eq(http_status)
+    end
+  end
+
+  describe '#execute' do
+    let(:token) { 'invalid-token' }
+    let(:starts_at) { Time.now.change(usec: 0) }
+    let(:service) { described_class.new(project, nil, payload) }
+    let(:payload_raw) do
+      {
+        'title' => 'alert title',
+        'start_time' => starts_at.rfc3339
+      }
+    end
+    let(:payload) { ActionController::Parameters.new(payload_raw).permit! }
+
+    subject { service.execute(token) }
+
+    it_behaves_like 'does not process incident issues', http_status: 403
+  end
+end
diff --git a/spec/services/projects/container_repository/cleanup_tags_service_spec.rb b/spec/services/projects/container_repository/cleanup_tags_service_spec.rb
index 78b969c8a0e..cd4d1e3fe67 100644
--- a/spec/services/projects/container_repository/cleanup_tags_service_spec.rb
+++ b/spec/services/projects/container_repository/cleanup_tags_service_spec.rb
@@ -41,7 +41,7 @@ describe Projects::ContainerRepository::CleanupTagsService do
       let(:params) { {} }
 
       it 'does not remove anything' do
-        expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag)
+        expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag_by_digest)
 
         is_expected.to include(status: :success, deleted: [])
       end
@@ -156,7 +156,7 @@ describe Projects::ContainerRepository::CleanupTagsService do
 
   def expect_delete(digest)
     expect_any_instance_of(ContainerRegistry::Client)
-      .to receive(:delete_repository_tag)
+      .to receive(:delete_repository_tag_by_digest)
       .with(repository.path, digest) { true }
   end
 end
diff --git a/spec/services/projects/container_repository/delete_tags_service_spec.rb b/spec/services/projects/container_repository/delete_tags_service_spec.rb
index decbbb7597f..e17e4b6f7c9 100644
--- a/spec/services/projects/container_repository/delete_tags_service_spec.rb
+++ b/spec/services/projects/container_repository/delete_tags_service_spec.rb
@@ -18,10 +18,6 @@ describe Projects::ContainerRepository::DeleteTagsService do
     stub_container_registry_tags(
       repository: repository.path,
       tags: %w(latest A Ba Bb C D E))
-
-    stub_tag_digest('latest', 'sha256:configA')
-    stub_tag_digest('A', 'sha256:configA')
-    stub_tag_digest('Ba', 'sha256:configB')
   end
 
   describe '#execute' do
@@ -38,82 +34,178 @@ describe Projects::ContainerRepository::DeleteTagsService do
         project.add_developer(user)
       end
 
-      context 'when no params are specified' do
-        let(:params) { {} }
+      context 'when the registry supports fast delete' do
+        context 'and the feature is enabled' do
+          let_it_be(:project) { create(:project, :private) }
+          let_it_be(:repository) { create(:container_repository, :root, project: project) }
 
-        it 'does not remove anything' do
-          expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag)
+          before do
+            allow(repository.client).to receive(:supports_tag_delete?).and_return(true)
+          end
 
-          is_expected.to include(status: :error)
-        end
-      end
+          context 'with tags to delete' do
+            let_it_be(:tags) { %w[A Ba] }
 
-      context 'with empty tags' do
-        let(:tags) { [] }
+            it 'deletes the tags by name' do
+              stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/tags/reference/A")
+                .to_return(status: 200, body: "")
 
-        it 'does not remove anything' do
-          expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag)
+              stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/tags/reference/Ba")
+                .to_return(status: 200, body: "")
 
-          is_expected.to include(status: :error)
-        end
-      end
+              expect_delete_tag_by_name('A')
+              expect_delete_tag_by_name('Ba')
+
+              is_expected.to include(status: :success)
+            end
+
+            it 'succeeds when tag delete returns 404' do
+              stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/tags/reference/A")
+                .to_return(status: 200, body: "")
+
+              stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/tags/reference/Ba")
+                .to_return(status: 404, body: "")
+
+              is_expected.to include(status: :success)
+            end
+
+            context 'with failures' do
+              context 'when the delete request fails' do
+                before do
+                  stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/tags/reference/A")
+                  .to_return(status: 500, body: "")
+
+                  stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/tags/reference/Ba")
+                  .to_return(status: 500, body: "")
+                end
 
-      context 'with tags to delete' do
-        let(:tags) { %w[A Ba] }
+                it { is_expected.to include(status: :error) }
+              end
+            end
+          end
+
+          context 'when no params are specified' do
+            let_it_be(:params) { {} }
+
+            it 'does not remove anything' do
+              expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag_by_name)
+
+              is_expected.to include(status: :error)
+            end
+          end
 
-        it 'deletes the tags using a dummy image' do
-          stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3')
+          context 'with empty tags' do
+            let_it_be(:tags) { [] }
 
-          stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/A")
-            .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+            it 'does not remove anything' do
+              expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag_by_name)
 
-          stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/Ba")
-            .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+              is_expected.to include(status: :error)
+            end
+          end
+        end
+        context 'and the feature is disabled' do
+          before do
+            stub_feature_flags(container_registry_fast_tag_delete: false)
+          end
 
-          expect_delete_tag('sha256:dummy')
+          it 'fallbacks to slow delete' do
+            expect(service).not_to receive(:fast_delete)
+            expect(service).to receive(:slow_delete).with(repository, tags)
 
-          is_expected.to include(status: :success)
+            subject
+          end
         end
+      end
+      context 'when the registry does not support fast delete' do
+        let_it_be(:project) { create(:project, :private) }
+        let_it_be(:repository) { create(:container_repository, :root, project: project) }
 
-        it 'succedes when tag delete returns 404' do
-          stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3')
+        before do
+          stub_tag_digest('latest', 'sha256:configA')
+          stub_tag_digest('A', 'sha256:configA')
+          stub_tag_digest('Ba', 'sha256:configB')
 
-          stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/A")
-            .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+          allow(repository.client).to receive(:supports_tag_delete?).and_return(false)
+        end
 
-          stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/Ba")
-            .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+        context 'when no params are specified' do
+          let_it_be(:params) { {} }
 
-          stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/manifests/sha256:dummy")
-            .to_return(status: 404, body: "", headers: {})
+          it 'does not remove anything' do
+            expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag_by_digest)
 
-          is_expected.to include(status: :success)
+            is_expected.to include(status: :error)
+          end
         end
 
-        context 'with failures' do
-          context 'when the dummy manifest generation fails' do
-            before do
-              stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3', success: false)
-            end
+        context 'with empty tags' do
+          let_it_be(:tags) { [] }
+
+          it 'does not remove anything' do
+            expect_any_instance_of(ContainerRegistry::Client).not_to receive(:delete_repository_tag_by_digest)
+
+            is_expected.to include(status: :error)
+          end
+        end
+
+        context 'with tags to delete' do
+          let_it_be(:tags) { %w[A Ba] }
 
-            it { is_expected.to include(status: :error) }
+          it 'deletes the tags using a dummy image' do
+            stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3')
+
+            stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/A")
+              .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+
+            stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/Ba")
+              .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+
+            expect_delete_tag_by_digest('sha256:dummy')
+
+            is_expected.to include(status: :success)
           end
 
-          context 'when updating the tags fails' do
-            before do
-              stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3')
+          it 'succeeds when tag delete returns 404' do
+            stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3')
 
-              stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/A")
-                .to_return(status: 500, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+            stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/A")
+              .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
 
-              stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/Ba")
-                .to_return(status: 500, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+            stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/Ba")
+              .to_return(status: 200, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+
+            stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/manifests/sha256:dummy")
+              .to_return(status: 404, body: "", headers: {})
+
+            is_expected.to include(status: :success)
+          end
 
-              stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/manifests/sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3")
-                .to_return(status: 200, body: "", headers: {})
+          context 'with failures' do
+            context 'when the dummy manifest generation fails' do
+              before do
+                stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3', success: false)
+              end
+
+              it { is_expected.to include(status: :error) }
             end
 
-            it { is_expected.to include(status: :error) }
+            context 'when updating the tags fails' do
+              before do
+                stub_upload("{\n  \"config\": {\n  }\n}", 'sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3')
+
+                stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/A")
+                  .to_return(status: 500, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+
+                stub_request(:put, "http://registry.gitlab/v2/#{repository.path}/manifests/Ba")
+                  .to_return(status: 500, body: "", headers: { 'docker-content-digest' => 'sha256:dummy' })
+
+                stub_request(:delete, "http://registry.gitlab/v2/#{repository.path}/manifests/sha256:4435000728ee66e6a80e55637fc22725c256b61de344a2ecdeaac6bdb36e8bc3")
+                  .to_return(status: 200, body: "", headers: {})
+              end
+
+              it { is_expected.to include(status: :error) }
+            end
           end
         end
       end
@@ -141,9 +233,21 @@ describe Projects::ContainerRepository::DeleteTagsService do
       .with(repository.path, content, digest) { double(success?: success ) }
   end
 
-  def expect_delete_tag(digest)
+  def expect_delete_tag_by_digest(digest)
     expect_any_instance_of(ContainerRegistry::Client)
-      .to receive(:delete_repository_tag)
+      .to receive(:delete_repository_tag_by_digest)
       .with(repository.path, digest) { true }
+
+    expect_any_instance_of(ContainerRegistry::Client)
+      .not_to receive(:delete_repository_tag_by_name)
+  end
+
+  def expect_delete_tag_by_name(name)
+    expect_any_instance_of(ContainerRegistry::Client)
+      .to receive(:delete_repository_tag_by_name)
+      .with(repository.path, name) { true }
+
+    expect_any_instance_of(ContainerRegistry::Client)
+      .not_to receive(:delete_repository_tag_by_digest)
   end
 end
diff --git a/spec/services/projects/lsif_data_service_spec.rb b/spec/services/projects/lsif_data_service_spec.rb
index b3c37c01c4d..29a99a96c41 100644
--- a/spec/services/projects/lsif_data_service_spec.rb
+++ b/spec/services/projects/lsif_data_service_spec.rb
@@ -23,43 +23,51 @@ describe Projects::LsifDataService do
     end
 
     context 'for main.go' do
+      let(:path_prefix) { "/#{project.full_path}/-/blob/#{commit_id}" }
+
       it 'returns lsif ranges for the file' do
         expect(service.execute).to eq([
           {
             end_char: 9,
             end_line: 6,
             start_char: 5,
-            start_line: 6
+            start_line: 6,
+            definition_url: "#{path_prefix}/main.go#L7"
           },
           {
             end_char: 36,
             end_line: 3,
             start_char: 1,
-            start_line: 3
+            start_line: 3,
+            definition_url: "#{path_prefix}/main.go#L4"
           },
           {
             end_char: 12,
             end_line: 7,
             start_char: 1,
-            start_line: 7
+            start_line: 7,
+            definition_url: "#{path_prefix}/main.go#L4"
           },
           {
             end_char: 20,
             end_line: 7,
             start_char: 13,
-            start_line: 7
+            start_line: 7,
+            definition_url: "#{path_prefix}/morestrings/reverse.go#L11"
           },
           {
             end_char: 12,
             end_line: 8,
             start_char: 1,
-            start_line: 8
+            start_line: 8,
+            definition_url: "#{path_prefix}/main.go#L4"
           },
           {
             end_char: 18,
             end_line: 8,
             start_char: 13,
-            start_line: 8
+            start_line: 8,
+            definition_url: "#{path_prefix}/morestrings/reverse.go#L5"
           }
         ])
       end
@@ -73,7 +81,8 @@ describe Projects::LsifDataService do
           end_char: 2,
           end_line: 11,
           start_char: 1,
-          start_line: 11
+          start_line: 11,
+          definition_url: "/#{project.full_path}/-/blob/#{commit_id}/morestrings/reverse.go#L12"
         })
       end
     end
@@ -87,7 +96,7 @@ describe Projects::LsifDataService do
     end
   end
 
-  describe '#doc_id_from' do
+  describe '#doc_id' do
     context 'when the passed path matches multiple files' do
       let(:path) { 'check/main.go' }
       let(:docs) do
@@ -100,7 +109,9 @@ describe Projects::LsifDataService do
       end
 
       it 'fetches the document with the shortest absolute path' do
-        expect(service.__send__(:doc_id_from, docs)).to eq(3)
+        service.instance_variable_set(:@docs, docs)
+
+        expect(service.__send__(:doc_id)).to eq(3)
       end
     end
   end