Add latest changes from gitlab-org/gitlab@master

50 files changed, 562 insertions, 171 deletions

diff --git a/CHANGELOG-EE.md b/CHANGELOG-EE.md
index 7050d44cd88..dc4e390ebc8 100644
--- a/CHANGELOG-EE.md
+++ b/CHANGELOG-EE.md
@@ -1,5 +1,9 @@
 Please view this file on the master branch, on stable branches it's out of date.
 
+## 12.6.1
+
+- No changes.
+
 ## 12.6.0
 
 ### Fixed (32 changes, 5 of them are from the community)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b868abf5034..2336cddc352 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,15 @@ entry.
 
 ## 12.6.1
 
-- No changes.
+### Fixed (2 changes)
+
+- Handle forbidden error when checking for knative. !22170
+- Fix stack trace highlight for PHP. !22258
+
+### Performance (1 change)
+
+- Eliminate N+1 queries in PipelinesController#index. !22189
+
 
 ## 12.6.0
 
diff --git a/app/controllers/projects/git_http_client_controller.rb b/app/controllers/projects/git_http_client_controller.rb
index ccfc38d97b2..3f6e116a62b 100644
--- a/app/controllers/projects/git_http_client_controller.rb
+++ b/app/controllers/projects/git_http_client_controller.rb
@@ -3,6 +3,7 @@
 class Projects::GitHttpClientController < Projects::ApplicationController
   include ActionController::HttpAuthentication::Basic
   include KerberosSpnegoHelper
+  include Gitlab::Utils::StrongMemoize
 
   attr_reader :authentication_result, :redirected_path
 
@@ -47,7 +48,7 @@ class Projects::GitHttpClientController < Projects::ApplicationController
         send_final_spnego_response
         return # Allow access
       end
-    elsif project && download_request? && http_allowed? && Guest.can?(:download_code, project)
+    elsif http_download_allowed?
 
       @authentication_result = Gitlab::Auth::Result.new(nil, project, :none, [:download_code])
 
@@ -89,11 +90,9 @@ class Projects::GitHttpClientController < Projects::ApplicationController
   end
 
   def repository
-    repo_type.repository_for(project)
-  end
-
-  def wiki?
-    repo_type.wiki?
+    strong_memoize(:repository) do
+      repo_type.repository_for(project)
+    end
   end
 
   def repo_type
@@ -113,8 +112,10 @@ class Projects::GitHttpClientController < Projects::ApplicationController
     authentication_result.ci?(project)
   end
 
-  def http_allowed?
-    Gitlab::ProtocolAccess.allowed?('http')
+  def http_download_allowed?
+    Gitlab::ProtocolAccess.allowed?('http') &&
+    download_request? &&
+    project && Guest.can?(:download_code, project)
   end
 end
 
diff --git a/app/controllers/projects/git_http_controller.rb b/app/controllers/projects/git_http_controller.rb
index 93f7ce73a51..ba9a25f3733 100644
--- a/app/controllers/projects/git_http_controller.rb
+++ b/app/controllers/projects/git_http_controller.rb
@@ -75,17 +75,19 @@ class Projects::GitHttpController < Projects::GitHttpClientController
   end
 
   def enqueue_fetch_statistics_update
-    return if wiki?
-    return unless project.daily_statistics_enabled?
+    return if repo_type.wiki?
+    return unless project&.daily_statistics_enabled?
 
     ProjectDailyStatisticsWorker.perform_async(project.id)
   end
 
   def access
-    @access ||= access_klass.new(access_actor, project,
-      'http', authentication_abilities: authentication_abilities,
-              namespace_path: params[:namespace_id], project_path: project_path,
-              redirected_path: redirected_path, auth_result_type: auth_result_type)
+    @access ||= access_klass.new(access_actor, project, 'http',
+      authentication_abilities: authentication_abilities,
+      namespace_path: params[:namespace_id],
+      project_path: project_path,
+      redirected_path: redirected_path,
+      auth_result_type: auth_result_type)
   end
 
   def access_actor
diff --git a/app/models/repository.rb b/app/models/repository.rb
index 2a67c26d840..3ec7d78d5f7 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -95,7 +95,7 @@ class Repository
   def path_to_repo
     @path_to_repo ||=
       begin
-        storage = Gitlab.config.repositories.storages[@project.repository_storage]
+        storage = Gitlab.config.repositories.storages[project.repository_storage]
 
         File.expand_path(
           File.join(storage.legacy_disk_path, disk_path + '.git')
@@ -128,7 +128,7 @@ class Repository
     commits = Gitlab::Git::Commit.batch_by_oid(raw_repository, oids)
 
     if commits.present?
-      Commit.decorate(commits, @project)
+      Commit.decorate(commits, project)
     else
       []
     end
@@ -159,14 +159,14 @@ class Repository
     }
 
     commits = Gitlab::Git::Commit.where(options)
-    commits = Commit.decorate(commits, @project) if commits.present?
+    commits = Commit.decorate(commits, project) if commits.present?
 
     CommitCollection.new(project, commits, ref)
   end
 
   def commits_between(from, to)
     commits = Gitlab::Git::Commit.between(raw_repository, from, to)
-    commits = Commit.decorate(commits, @project) if commits.present?
+    commits = Commit.decorate(commits, project) if commits.present?
     commits
   end
 
@@ -695,13 +695,13 @@ class Repository
     commits = raw_repository.list_last_commits_for_tree(sha, path, offset: offset, limit: limit)
 
     commits.each do |path, commit|
-      commits[path] = ::Commit.new(commit, @project)
+      commits[path] = ::Commit.new(commit, project)
     end
   end
 
   def last_commit_for_path(sha, path)
     commit = raw_repository.last_commit_for_path(sha, path)
-    ::Commit.new(commit, @project) if commit
+    ::Commit.new(commit, project) if commit
   end
 
   def last_commit_id_for_path(sha, path)
@@ -1136,7 +1136,7 @@ class Repository
                Gitlab::Git::Commit.find(raw_repository, oid_or_ref)
              end
 
-    ::Commit.new(commit, @project) if commit
+    ::Commit.new(commit, project) if commit
   end
 
   def cache
diff --git a/app/services/merge_requests/get_urls_service.rb b/app/services/merge_requests/get_urls_service.rb
index 7c88c9abb41..de3f2acdf63 100644
--- a/app/services/merge_requests/get_urls_service.rb
+++ b/app/services/merge_requests/get_urls_service.rb
@@ -9,7 +9,7 @@ module MergeRequests
     end
 
     def execute(changes)
-      return [] unless project.printing_merge_request_link_enabled
+      return [] unless project&.printing_merge_request_link_enabled
 
       branches = get_branches(changes)
       merge_requests_map = opened_merge_requests_from_source_branches(branches)
diff --git a/changelogs/unreleased/121714-fix-sentry-stack-trace-highlight-for-php.yml b/changelogs/unreleased/121714-fix-sentry-stack-trace-highlight-for-php.yml
deleted file mode 100644
index 4f3b80dfcaa..00000000000
--- a/changelogs/unreleased/121714-fix-sentry-stack-trace-highlight-for-php.yml
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: Fix stack trace highlight for PHP
-merge_request: 22258
-author:
-type: fixed
diff --git a/changelogs/unreleased/31301-expose-reference-path-in-api-for-issuables.yml b/changelogs/unreleased/31301-expose-reference-path-in-api-for-issuables.yml
new file mode 100644
index 00000000000..f9f41ceb615
--- /dev/null
+++ b/changelogs/unreleased/31301-expose-reference-path-in-api-for-issuables.yml
@@ -0,0 +1,5 @@
+---
+title: Expose full reference path for issuables in API
+merge_request: 20354
+author:
+type: changed
diff --git a/changelogs/unreleased/alexives-119379-handle_http_error_instead_of_not_found.yml b/changelogs/unreleased/alexives-119379-handle_http_error_instead_of_not_found.yml
deleted file mode 100644
index 6f5eea45660..00000000000
--- a/changelogs/unreleased/alexives-119379-handle_http_error_instead_of_not_found.yml
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: Handle forbidden error when checking for knative
-merge_request: 22170
-author:
-type: fixed
diff --git a/changelogs/unreleased/sh-optimize-pipeline-sql.yml b/changelogs/unreleased/sh-optimize-pipeline-sql.yml
deleted file mode 100644
index f40fff99454..00000000000
--- a/changelogs/unreleased/sh-optimize-pipeline-sql.yml
+++ /dev/null
@@ -1,5 +0,0 @@
----
-title: Eliminate N+1 queries in PipelinesController#index
-merge_request: 22189
-author:
-type: performance
diff --git a/doc/api/epics.md b/doc/api/epics.md
index 531c75fd8c5..4b20534eeed 100644
--- a/doc/api/epics.md
+++ b/doc/api/epics.md
@@ -29,6 +29,14 @@ are paginated.
 
 Read more on [pagination](README.md#pagination).
 
+CAUTION: **Deprecation**
+> `reference` attribute in response is deprecated in favour of `references`.
+> Introduced [GitLab 12.6](https://gitlab.com/gitlab-org/gitlab/merge_requests/20354)
+
+NOTE: **Note**
+> `references.relative` is relative to the group that the epic is being requested. When epic is fetched from its origin group
+> `relative` format would be the same as `short` format and when requested cross groups it is expected to be the same as `full` format.
+
 ## List epics for a group
 
 Gets all epics of the requested group and its subgroups.
@@ -73,6 +81,51 @@ Example response:
   "state": "opened",
   "web_url": "http://localhost:3001/groups/test/-/epics/4",
   "reference": "&4",
+  "references": {
+    "short": "&4",
+    "relative": "&4",
+    "full": "test&4"
+  },
+  "author": {
+    "id": 10,
+    "name": "Lu Mayer",
+    "username": "kam",
+    "state": "active",
+    "avatar_url": "http://www.gravatar.com/avatar/018729e129a6f31c80a6327a30196823?s=80&d=identicon",
+    "web_url": "http://localhost:3001/kam"
+  },
+  "start_date": null,
+  "start_date_is_fixed": false,
+  "start_date_fixed": null,
+  "start_date_from_milestones": null,       //deprecated in favor of start_date_from_inherited_source
+  "start_date_from_inherited_source": null,
+  "end_date": "2018-07-31",                 //deprecated in favor of due_date
+  "due_date": "2018-07-31",
+  "due_date_is_fixed": false,
+  "due_date_fixed": null,
+  "due_date_from_milestones": "2018-07-31", //deprecated in favor of start_date_from_inherited_source
+  "due_date_from_inherited_source": "2018-07-31",
+  "created_at": "2018-07-17T13:36:22.770Z",
+  "updated_at": "2018-07-18T12:22:05.239Z",
+  "closed_at": "2018-08-18T12:22:05.239Z",
+  "labels": [],
+  "upvotes": 4,
+  "downvotes": 0
+  },
+  {
+  "id": 50,
+  "iid": 35,
+  "group_id": 17,
+  "title": "Accusamus iste et ullam ratione voluptatem omnis debitis dolor est.",
+  "description": "Molestias dolorem eos vitae expedita impedit necessitatibus quo voluptatum.",
+  "state": "opened",
+  "web_url": "http://localhost:3001/groups/test/sample/-/epics/4",
+  "reference": "&4",
+  "references": {
+    "short": "&4",
+    "relative": "sample&4",
+    "full": "test/sample&4"
+  },
   "author": {
     "id": 10,
     "name": "Lu Mayer",
@@ -131,6 +184,11 @@ Example response:
   "state": "opened",
   "web_url": "http://localhost:3001/groups/test/-/epics/5",
   "reference": "&5",
+  "references": {
+    "short": "&5",
+    "relative": "&5",
+    "full": "test&5"
+  },
   "author":{
     "id": 7,
     "name": "Pamella Huel",
@@ -199,8 +257,13 @@ Example response:
   "title": "Epic",
   "description": "Epic description",
   "state": "opened",
-  "web_url": "http://localhost:3001/groups/test/-/epics/5",
+  "web_url": "http://localhost:3001/groups/test/-/epics/6",
   "reference": "&6",
+  "references": {
+    "short": "&6",
+    "relative": "&6",
+    "full": "test&6"
+  },
   "author": {
     "name" : "Alexandra Bashirian",
     "avatar_url" : null,
@@ -269,8 +332,13 @@ Example response:
   "title": "New Title",
   "description": "Epic description",
   "state": "opened",
-  "web_url": "http://localhost:3001/groups/test/-/epics/5",
+  "web_url": "http://localhost:3001/groups/test/-/epics/6",
   "reference": "&6",
+  "references": {
+    "short": "&6",
+    "relative": "&6",
+    "full": "test&6"
+  },
   "author": {
     "name" : "Alexandra Bashirian",
     "avatar_url" : null,
@@ -372,6 +440,13 @@ Example response:
       "avatar_url": "http://www.gravatar.com/avatar/a2f5c6fcef64c9c69cb8779cb292be1b?s=80&d=identicon",
       "web_url": "http://localhost:3001/arnita"
     },
+    "web_url": "http://localhost:3001/groups/test/-/epics/5",
+    "reference": "&5",
+    "references": {
+      "short": "&5",
+      "relative": "&5",
+      "full": "test&5"
+    },
     "start_date": null,
     "end_date": null,
     "created_at": "2018-01-21T06:21:13.165Z",
diff --git a/doc/api/issues.md b/doc/api/issues.md
index fe551cfb397..383d190a045 100644
--- a/doc/api/issues.md
+++ b/doc/api/issues.md
@@ -12,6 +12,14 @@ are paginated.
 
 Read more on [pagination](README.md#pagination).
 
+CAUTION: **Deprecation**
+> `reference` attribute in response is deprecated in favour of `references`.
+> Introduced [GitLab 12.6](https://gitlab.com/gitlab-org/gitlab/merge_requests/20354)
+
+NOTE: **Note**
+> `references.relative` is relative to the group / project that the issue is being requested. When issue is fetched from its project
+> `relative` format would be the same as `short` format and when requested across groups / projects it is expected to be the same as `full` format.
+
 ## List issues
 
 Get all issues the authenticated user has access to. By default it
@@ -121,7 +129,12 @@ Example response:
       "merge_requests_count": 0,
       "user_notes_count": 1,
       "due_date": "2016-07-22",
-      "web_url": "http://example.com/example/example/issues/6",
+      "web_url": "http://example.com/my-group/my-project/issues/6",
+      "references": {
+        "short": "#6",
+        "relative": "my-group/my-project#6",
+        "full": "my-group/my-project#6"
+      },
       "time_stats": {
          "time_estimate": 0,
          "total_time_spent": 0,
@@ -270,7 +283,12 @@ Example response:
       "closed_by" : null,
       "user_notes_count": 1,
       "due_date": null,
-      "web_url": "http://example.com/example/example/issues/1",
+      "web_url": "http://example.com/my-group/my-project/issues/1",
+      "references": {
+        "short": "#1",
+        "relative": "my-project#1",
+        "full": "my-group/my-project#1"
+      },
       "time_stats": {
          "time_estimate": 0,
          "total_time_spent": 0,
@@ -426,7 +444,12 @@ Example response:
       },
       "user_notes_count": 1,
       "due_date": "2016-07-22",
-      "web_url": "http://example.com/example/example/issues/1",
+      "web_url": "http://example.com/my-group/my-project/issues/1",
+      "references": {
+        "short": "#1",
+        "relative": "#1",
+        "full": "my-group/my-project#1"
+      },
       "time_stats": {
          "time_estimate": 0,
          "total_time_spent": 0,
@@ -543,7 +566,12 @@ Example response:
    "subscribed": false,
    "user_notes_count": 1,
    "due_date": null,
-   "web_url": "http://example.com/example/example/issues/1",
+   "web_url": "http://example.com/my-group/my-project/issues/1",
+   "references": {
+     "short": "#1",
+     "relative": "#1",
+     "full": "my-group/my-project#1"
+   },
    "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -668,7 +696,12 @@ Example response:
    "subscribed" : true,
    "user_notes_count": 0,
    "due_date": null,
-   "web_url": "http://example.com/example/example/issues/14",
+   "web_url": "http://example.com/my-group/my-project/issues/14",
+   "references": {
+     "short": "#14",
+     "relative": "#14",
+     "full": "my-group/my-project#14"
+   },
    "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -778,7 +811,12 @@ Example response:
    "subscribed" : true,
    "user_notes_count": 0,
    "due_date": "2016-07-22",
-   "web_url": "http://example.com/example/example/issues/15",
+   "web_url": "http://example.com/my-group/my-project/issues/15",
+   "references": {
+     "short": "#15",
+     "relative": "#15",
+     "full": "my-group/my-project#15"
+   },
    "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -900,7 +938,12 @@ Example response:
     "web_url": "https://gitlab.example.com/solon.cremin"
   },
   "due_date": null,
-  "web_url": "http://example.com/example/example/issues/11",
+  "web_url": "http://example.com/my-group/my-project/issues/11",
+  "references": {
+    "short": "#11",
+    "relative": "#11",
+    "full": "my-group/my-project#11"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1001,7 +1044,12 @@ Example response:
     "web_url": "https://gitlab.example.com/solon.cremin"
   },
   "due_date": null,
-  "web_url": "http://example.com/example/example/issues/11",
+  "web_url": "http://example.com/my-group/my-project/issues/11",
+  "references": {
+    "short": "#11",
+    "relative": "#11",
+    "full": "my-group/my-project#11"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1095,7 +1143,12 @@ Example response:
   },
   "subscribed": false,
   "due_date": null,
-  "web_url": "http://example.com/example/example/issues/12",
+  "web_url": "http://example.com/my-group/my-project/issues/12",
+  "references": {
+    "short": "#12",
+    "relative": "#12",
+    "full": "my-group/my-project#12"
+  },
   "confidential": false,
   "discussion_locked": false,
   "task_completion_status":{
@@ -1197,7 +1250,12 @@ Example response:
     "downvotes": 0,
     "merge_requests_count": 0,
     "due_date": null,
-    "web_url": "http://example.com/example/example/issues/110",
+    "web_url": "http://example.com/my-group/my-project/issues/10",
+    "references": {
+      "short": "#10",
+      "relative": "#10",
+      "full": "my-group/my-project#10"
+    },
     "confidential": false,
     "discussion_locked": false,
     "task_completion_status":{
@@ -1436,6 +1494,11 @@ Example response:
     "force_remove_source_branch": false,
     "reference": "!11",
     "web_url": "https://gitlab.example.com/twitter/flight/merge_requests/4",
+    "references": {
+      "short": "!4",
+      "relative": "!4",
+      "full": "twitter/flight!4"
+    },
     "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -1566,6 +1629,12 @@ Example response:
     "should_remove_source_branch": null,
     "force_remove_source_branch": false,
     "web_url": "https://gitlab.example.com/gitlab-org/gitlab-test/merge_requests/6432",
+    "reference": "!6432",
+    "references": {
+      "short": "!6432",
+      "relative": "!6432",
+      "full": "gitlab-org/gitlab-test!6432"
+    },
     "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
diff --git a/doc/api/merge_requests.md b/doc/api/merge_requests.md
index 541aa03450f..d17db8deeb2 100644
--- a/doc/api/merge_requests.md
+++ b/doc/api/merge_requests.md
@@ -2,6 +2,14 @@
 
 Every API call to merge requests must be authenticated.
 
+CAUTION: **Deprecation**
+> `reference` attribute in response is deprecated in favour of `references`.
+> Introduced [GitLab 12.6](https://gitlab.com/gitlab-org/gitlab/merge_requests/20354)
+
+NOTE: **Note**
+> `references.relative` is relative to the group / project that the merge request is being requested. When merge request is fetched from its project
+> `relative` format would be the same as `short` format and when requested across groups / projects it is expected to be the same as `full` format.
+
 ## List merge requests
 
 > [Introduced][ce-13060] in GitLab 9.5.
@@ -134,6 +142,11 @@ Parameters:
     "allow_collaboration": false,
     "allow_maintainer_to_push": false,
     "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+    "references": {
+      "short": "!1",
+      "relative": "my-group/my-project!1",
+      "full": "my-group/my-project!1"
+    },
     "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -296,6 +309,11 @@ Parameters:
     "allow_collaboration": false,
     "allow_maintainer_to_push": false,
     "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+    "references": {
+      "short": "!1",
+      "relative": "!1",
+      "full": "my-group/my-project!1"
+    },
     "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -448,6 +466,11 @@ Parameters:
     "should_remove_source_branch": true,
     "force_remove_source_branch": false,
     "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+    "references": {
+      "short": "!1",
+      "relative": "my-project!1",
+      "full": "my-group/my-project!1"
+    },
     "time_stats": {
       "time_estimate": 0,
       "total_time_spent": 0,
@@ -574,6 +597,11 @@ Parameters:
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -779,7 +807,12 @@ Parameters:
   "should_remove_source_branch": true,
   "force_remove_source_branch": false,
   "squash": false,
-  "web_url": "http://example.com/example/example/merge_requests/1",
+  "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "discussion_locked": false,
   "time_stats": {
     "time_estimate": 0,
@@ -989,6 +1022,11 @@ order for it to take effect:
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1143,6 +1181,11 @@ Must include at least one non-required attribute from above.
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1313,6 +1356,11 @@ Parameters:
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1486,6 +1534,11 @@ Parameters:
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1772,6 +1825,11 @@ Example response:
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -1918,6 +1976,11 @@ Example response:
   "allow_collaboration": false,
   "allow_maintainer_to_push": false,
   "web_url": "http://gitlab.example.com/my-group/my-project/merge_requests/1",
+  "references": {
+    "short": "!1",
+    "relative": "!1",
+    "full": "my-group/my-project!1"
+  },
   "time_stats": {
     "time_estimate": 0,
     "total_time_spent": 0,
@@ -2078,7 +2141,12 @@ Example response:
     "should_remove_source_branch": true,
     "force_remove_source_branch": false,
     "squash": false,
-    "web_url": "http://example.com/example/example/merge_requests/1"
+    "web_url": "http://example.com/my-group/my-project/merge_requests/1",
+    "references": {
+      "short": "!1",
+      "relative": "!1",
+      "full": "my-group/my-project!1"
+    },
   },
   "target_url": "https://gitlab.example.com/gitlab-org/gitlab-ci/merge_requests/7",
   "body": "Et voluptas laudantium minus nihil recusandae ut accusamus earum aut non.",
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index cc95be5e3be..c82821c3ca4 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -569,6 +569,20 @@ module API
       end
     end
 
+    class IssuableReferences < Grape::Entity
+      expose :short do |issuable|
+        issuable.to_reference
+      end
+
+      expose :relative do |issuable, options|
+        issuable.to_reference(options[:group] || options[:project])
+      end
+
+      expose :full do |issuable|
+        issuable.to_reference(full: true)
+      end
+    end
+
     class Diff < Grape::Entity
       expose :old_path, :new_path, :a_mode, :b_mode
       expose :new_file?, as: :new_file
@@ -676,6 +690,10 @@ module API
         end
       end
 
+      expose :references, with: IssuableReferences do |issue|
+        issue
+      end
+
       # Calculating the value of subscribed field triggers Markdown
       # processing. We can't do that for multiple issues / merge
       # requests in a single API request.
@@ -787,10 +805,16 @@ module API
       # Deprecated
       expose :allow_collaboration, as: :allow_maintainer_to_push, if: -> (merge_request, _) { merge_request.for_fork? }
 
+      # reference is deprecated in favour of references
+      # Introduced [Gitlab 12.6](https://gitlab.com/gitlab-org/gitlab/merge_requests/20354)
       expose :reference do |merge_request, options|
         merge_request.to_reference(options[:project])
       end
 
+      expose :references, with: IssuableReferences do |merge_request|
+        merge_request
+      end
+
       expose :web_url do |merge_request|
         Gitlab::UrlBuilder.build(merge_request)
       end
diff --git a/lib/api/helpers/internal_helpers.rb b/lib/api/helpers/internal_helpers.rb
index b03eb5ad440..607e0784415 100644
--- a/lib/api/helpers/internal_helpers.rb
+++ b/lib/api/helpers/internal_helpers.rb
@@ -120,21 +120,13 @@ module API
       end
 
       def gl_project_path
-        if wiki?
-          project.wiki.full_path
-        else
-          project.full_path
-        end
+        repository.full_path
       end
 
       # Return the repository depending on whether we want the wiki or the
       # regular repository
       def repository
-        if repo_type.wiki?
-          project.wiki.repository
-        else
-          project.repository
-        end
+        @repository ||= repo_type.repository_for(project)
       end
 
       # Return the Gitaly Address if it is enabled
diff --git a/lib/api/internal/base.rb b/lib/api/internal/base.rb
index 50142b8641e..11f2a2ea1c0 100644
--- a/lib/api/internal/base.rb
+++ b/lib/api/internal/base.rb
@@ -224,9 +224,9 @@ module API
 
           response.add_merge_request_urls(merge_request_urls)
 
-          # A user is not guaranteed to be returned; an orphaned write deploy
+          # Neither User nor Project are guaranteed to be returned; an orphaned write deploy
           # key could be used
-          if user
+          if user && project
             redirect_message = Gitlab::Checks::ProjectMoved.fetch_message(user.id, project.id)
             project_created_message = Gitlab::Checks::ProjectCreated.fetch_message(user.id, project.id)
 
diff --git a/lib/api/issues.rb b/lib/api/issues.rb
index 4208385a48d..1ef27d9f1b1 100644
--- a/lib/api/issues.rb
+++ b/lib/api/issues.rb
@@ -122,16 +122,15 @@ module API
         use :issues_params
       end
       get ":id/issues" do
-        group = find_group!(params[:id])
-
-        issues = paginate(find_issues(group_id: group.id, include_subgroups: true))
+        issues = paginate(find_issues(group_id: user_group.id, include_subgroups: true))
 
         options = {
           with: Entities::Issue,
           with_labels_details: declared_params[:with_labels_details],
           current_user: current_user,
           issuable_metadata: issuable_meta_data(issues, 'Issue', current_user),
-          include_subscribed: false
+          include_subscribed: false,
+          group: user_group
         }
 
         present issues, options
@@ -142,9 +141,7 @@ module API
         use :issues_stats_params
       end
       get ":id/issues_statistics" do
-        group = find_group!(params[:id])
-
-        present issues_statistics(group_id: group.id, include_subgroups: true), with: Grape::Presenters::Presenter
+        present issues_statistics(group_id: user_group.id, include_subgroups: true), with: Grape::Presenters::Presenter
       end
     end
 
@@ -161,9 +158,7 @@ module API
         use :issues_params
       end
       get ":id/issues" do
-        project = find_project!(params[:id])
-
-        issues = paginate(find_issues(project_id: project.id))
+        issues = paginate(find_issues(project_id: user_project.id))
 
         options = {
           with: Entities::Issue,
@@ -182,9 +177,7 @@ module API
         use :issues_stats_params
       end
       get ":id/issues_statistics" do
-        project = find_project!(params[:id])
-
-        present issues_statistics(project_id: project.id), with: Grape::Presenters::Presenter
+        present issues_statistics(project_id: user_project.id), with: Grape::Presenters::Presenter
       end
 
       desc 'Get a single project issue' do
diff --git a/lib/api/merge_requests.rb b/lib/api/merge_requests.rb
index 794237f8032..0e161d5589a 100644
--- a/lib/api/merge_requests.rb
+++ b/lib/api/merge_requests.rb
@@ -157,11 +157,9 @@ module API
         use :merge_requests_params
       end
       get ":id/merge_requests" do
-        group = find_group!(params[:id])
+        merge_requests = find_merge_requests(group_id: user_group.id, include_subgroups: true)
 
-        merge_requests = find_merge_requests(group_id: group.id, include_subgroups: true)
-
-        present merge_requests, serializer_options_for(merge_requests)
+        present merge_requests, serializer_options_for(merge_requests).merge(group: user_group)
       end
     end
 
@@ -215,7 +213,7 @@ module API
 
         merge_requests = find_merge_requests(project_id: user_project.id)
 
-        options = serializer_options_for(merge_requests)
+        options = serializer_options_for(merge_requests).merge(project: user_project)
         options[:project] = user_project
 
         present merge_requests, options
diff --git a/lib/gitlab/backtrace_cleaner.rb b/lib/gitlab/backtrace_cleaner.rb
new file mode 100644
index 00000000000..30ec99808f7
--- /dev/null
+++ b/lib/gitlab/backtrace_cleaner.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module BacktraceCleaner
+    IGNORE_BACKTRACES = %w[
+      config/initializers
+      ee/lib/gitlab/middleware/
+      lib/gitlab/correlation_id.rb
+      lib/gitlab/database/load_balancing/
+      lib/gitlab/etag_caching/
+      lib/gitlab/i18n.rb
+      lib/gitlab/metrics/
+      lib/gitlab/middleware/
+      lib/gitlab/performance_bar/
+      lib/gitlab/profiler.rb
+      lib/gitlab/query_limiting/
+      lib/gitlab/request_context.rb
+      lib/gitlab/request_profiler/
+      lib/gitlab/sidekiq_logging/
+      lib/gitlab/sidekiq_middleware/
+      lib/gitlab/sidekiq_status/
+      lib/gitlab/tracing/
+      lib/gitlab/webpack/dev_server_middleware.rb
+    ].freeze
+
+    IGNORED_BACKTRACES_REGEXP = Regexp.union(IGNORE_BACKTRACES).freeze
+
+    def self.clean_backtrace(backtrace)
+      return unless backtrace
+
+      Array(Rails.backtrace_cleaner.clean(backtrace)).reject do |line|
+        line.match(IGNORED_BACKTRACES_REGEXP)
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/bitbucket_import/importer.rb b/lib/gitlab/bitbucket_import/importer.rb
index 67118aed549..349ca26ec03 100644
--- a/lib/gitlab/bitbucket_import/importer.rb
+++ b/lib/gitlab/bitbucket_import/importer.rb
@@ -42,7 +42,7 @@ module Gitlab
       end
 
       def store_pull_request_error(pull_request, ex)
-        backtrace = Gitlab::Profiler.clean_backtrace(ex.backtrace)
+        backtrace = Gitlab::BacktraceCleaner.clean_backtrace(ex.backtrace)
         error = { type: :pull_request, iid: pull_request.iid, errors: ex.message, trace: backtrace, raw_response: pull_request.raw }
 
         Gitlab::ErrorTracking.log_exception(ex, error)
diff --git a/lib/gitlab/exception_log_formatter.rb b/lib/gitlab/exception_log_formatter.rb
index e0de0219294..92d55213cc2 100644
--- a/lib/gitlab/exception_log_formatter.rb
+++ b/lib/gitlab/exception_log_formatter.rb
@@ -13,7 +13,7 @@ module Gitlab
       )
 
       if exception.backtrace
-        payload['exception.backtrace'] = Gitlab::Profiler.clean_backtrace(exception.backtrace)
+        payload['exception.backtrace'] = Gitlab::BacktraceCleaner.clean_backtrace(exception.backtrace)
       end
     end
   end
diff --git a/lib/gitlab/git/rugged_impl/use_rugged.rb b/lib/gitlab/git/rugged_impl/use_rugged.rb
index 80b75689334..ca5d533bd75 100644
--- a/lib/gitlab/git/rugged_impl/use_rugged.rb
+++ b/lib/gitlab/git/rugged_impl/use_rugged.rb
@@ -27,7 +27,7 @@ module Gitlab
                 feature: method_name,
                 args: args,
                 duration: duration,
-                backtrace: Gitlab::Profiler.clean_backtrace(caller))
+                backtrace: Gitlab::BacktraceCleaner.clean_backtrace(caller))
             end
 
             result
diff --git a/lib/gitlab/gitaly_client.rb b/lib/gitlab/gitaly_client.rb
index 25785089a34..9636e75aba1 100644
--- a/lib/gitlab/gitaly_client.rb
+++ b/lib/gitlab/gitaly_client.rb
@@ -179,7 +179,7 @@ module Gitlab
       self.query_time += duration
       if Gitlab::PerformanceBar.enabled_for_request?
         add_call_details(feature: "#{service}##{rpc}", duration: duration, request: request_hash, rpc: rpc,
-                         backtrace: Gitlab::Profiler.clean_backtrace(caller))
+                         backtrace: Gitlab::BacktraceCleaner.clean_backtrace(caller))
       end
     end
 
@@ -438,7 +438,7 @@ module Gitlab
     def self.count_stack
       return unless Gitlab::SafeRequestStore.active?
 
-      stack_string = Gitlab::Profiler.clean_backtrace(caller).drop(1).join("\n")
+      stack_string = Gitlab::BacktraceCleaner.clean_backtrace(caller).drop(1).join("\n")
 
       Gitlab::SafeRequestStore[:stack_counter] ||= Hash.new
 
diff --git a/lib/gitlab/profiler.rb b/lib/gitlab/profiler.rb
index f2f6180c464..f47ccb8fed9 100644
--- a/lib/gitlab/profiler.rb
+++ b/lib/gitlab/profiler.rb
@@ -107,7 +107,7 @@ module Gitlab
 
             super
 
-            Gitlab::Profiler.clean_backtrace(caller).each do |caller_line|
+            Gitlab::BacktraceCleaner.clean_backtrace(caller).each do |caller_line|
               stripped_caller_line = caller_line.sub("#{Rails.root}/", '')
 
               super("  ↳ #{stripped_caller_line}")
@@ -117,14 +117,6 @@ module Gitlab
       end
     end
 
-    def self.clean_backtrace(backtrace)
-      return unless backtrace
-
-      Array(Rails.backtrace_cleaner.clean(backtrace)).reject do |line|
-        line.match(Regexp.union(IGNORE_BACKTRACES))
-      end
-    end
-
     def self.with_custom_logger(logger)
       original_colorize_logging = ActiveSupport::LogSubscriber.colorize_logging
       original_activerecord_logger = ActiveRecord::Base.logger
diff --git a/lib/gitlab/repo_path.rb b/lib/gitlab/repo_path.rb
index 030e50dfbf6..1baa2a9e461 100644
--- a/lib/gitlab/repo_path.rb
+++ b/lib/gitlab/repo_path.rb
@@ -32,9 +32,12 @@ module Gitlab
 
     def self.find_project(project_path)
       project = Project.find_by_full_path(project_path, follow_redirects: true)
-      was_redirected = project && project.full_path.casecmp(project_path) != 0
 
-      [project, was_redirected]
+      [project, redirected?(project, project_path)]
+    end
+
+    def self.redirected?(project, project_path)
+      project && project.full_path.casecmp(project_path) != 0
     end
   end
 end
diff --git a/lib/gitlab/repository_cache.rb b/lib/gitlab/repository_cache.rb
index 56007574b1b..fca8c43da2e 100644
--- a/lib/gitlab/repository_cache.rb
+++ b/lib/gitlab/repository_cache.rb
@@ -7,7 +7,8 @@ module Gitlab
 
     def initialize(repository, extra_namespace: nil, backend: Rails.cache)
       @repository = repository
-      @namespace = "#{repository.full_path}:#{repository.project.id}"
+      @namespace = "#{repository.full_path}"
+      @namespace += ":#{repository.project.id}" if repository.project
       @namespace = "#{@namespace}:#{extra_namespace}" if extra_namespace
       @backend = backend
     end
diff --git a/lib/gitlab/repository_set_cache.rb b/lib/gitlab/repository_set_cache.rb
index 6d3ac53a787..4797ec0b116 100644
--- a/lib/gitlab/repository_set_cache.rb
+++ b/lib/gitlab/repository_set_cache.rb
@@ -7,7 +7,8 @@ module Gitlab
 
     def initialize(repository, extra_namespace: nil, expires_in: 2.weeks)
       @repository = repository
-      @namespace = "#{repository.full_path}:#{repository.project.id}"
+      @namespace = "#{repository.full_path}"
+      @namespace += ":#{repository.project.id}" if repository.project
       @namespace = "#{@namespace}:#{extra_namespace}" if extra_namespace
       @expires_in = expires_in
     end
diff --git a/lib/gitlab/sidekiq_logging/exception_handler.rb b/lib/gitlab/sidekiq_logging/exception_handler.rb
index fba74b6c9ed..a6d6819bf8e 100644
--- a/lib/gitlab/sidekiq_logging/exception_handler.rb
+++ b/lib/gitlab/sidekiq_logging/exception_handler.rb
@@ -18,7 +18,7 @@ module Gitlab
           data.merge!(job_data) if job_data.present?
         end
 
-        data[:error_backtrace] = Gitlab::Profiler.clean_backtrace(job_exception.backtrace) if job_exception.backtrace.present?
+        data[:error_backtrace] = Gitlab::BacktraceCleaner.clean_backtrace(job_exception.backtrace) if job_exception.backtrace.present?
 
         Sidekiq.logger.warn(data)
       end
diff --git a/lib/gitlab/workhorse.rb b/lib/gitlab/workhorse.rb
index 713ca31bbc5..29450a33289 100644
--- a/lib/gitlab/workhorse.rb
+++ b/lib/gitlab/workhorse.rb
@@ -22,18 +22,16 @@ module Gitlab
       def git_http_ok(repository, repo_type, user, action, show_all_refs: false)
         raise "Unsupported action: #{action}" unless ALLOWED_GIT_HTTP_ACTIONS.include?(action.to_s)
 
-        project = repository.project
-
         attrs = {
           GL_ID: Gitlab::GlId.gl_id(user),
-          GL_REPOSITORY: repo_type.identifier_for_subject(project),
+          GL_REPOSITORY: repo_type.identifier_for_subject(repository.project),
           GL_USERNAME: user&.username,
           ShowAllRefs: show_all_refs,
           Repository: repository.gitaly_repository.to_h,
           GitConfigOptions: [],
           GitalyServer: {
-            address: Gitlab::GitalyClient.address(project.repository_storage),
-            token: Gitlab::GitalyClient.token(project.repository_storage),
+            address: Gitlab::GitalyClient.address(repository.storage),
+            token: Gitlab::GitalyClient.token(repository.storage),
             features: Feature::Gitaly.server_feature_flags
           }
         }
diff --git a/lib/peek/views/active_record.rb b/lib/peek/views/active_record.rb
index 1bb3ddb964a..ed3470f81f4 100644
--- a/lib/peek/views/active_record.rb
+++ b/lib/peek/views/active_record.rb
@@ -32,7 +32,7 @@ module Peek
               detail_store << {
                 duration: finish - start,
                 sql: data[:sql].strip,
-                backtrace: Gitlab::Profiler.clean_backtrace(caller)
+                backtrace: Gitlab::BacktraceCleaner.clean_backtrace(caller)
               }
             end
           end
diff --git a/lib/peek/views/redis_detailed.rb b/lib/peek/views/redis_detailed.rb
index 84041b6be73..14cabd62025 100644
--- a/lib/peek/views/redis_detailed.rb
+++ b/lib/peek/views/redis_detailed.rb
@@ -23,7 +23,7 @@ module Gitlab
         detail_store << {
           cmd: args.first,
           duration: duration,
-          backtrace: ::Gitlab::Profiler.clean_backtrace(caller)
+          backtrace: ::Gitlab::BacktraceCleaner.clean_backtrace(caller)
         }
       end
 
diff --git a/qa/qa/resource/runner.rb b/qa/qa/resource/runner.rb
index d1b4e8f7d54..f1f72c9cacd 100644
--- a/qa/qa/resource/runner.rb
+++ b/qa/qa/resource/runner.rb
@@ -54,7 +54,7 @@ module QA
         @id = this_runner[:id]
 
         super
-
+      ensure
         Service::DockerRun::GitlabRunner.new(name).remove!
       end
 
diff --git a/qa/qa/resource/sandbox.rb b/qa/qa/resource/sandbox.rb
index 6c87fcb377a..54c13071cef 100644
--- a/qa/qa/resource/sandbox.rb
+++ b/qa/qa/resource/sandbox.rb
@@ -41,6 +41,14 @@ module QA
         resource_web_url(api_get)
       rescue ResourceNotFoundError
         super
+
+        # If the group was just created the runners token might not be
+        # available via the API immediately.
+        Support::Retrier.retry_on_exception(sleep_interval: 5) do
+          resource = resource_web_url(api_get)
+          populate(:runners_token)
+          resource
+        end
       end
 
       def api_get_path
diff --git a/spec/controllers/projects/git_http_controller_spec.rb b/spec/controllers/projects/git_http_controller_spec.rb
index b756dd5662d..b7568346cdc 100644
--- a/spec/controllers/projects/git_http_controller_spec.rb
+++ b/spec/controllers/projects/git_http_controller_spec.rb
@@ -3,10 +3,17 @@
 require 'spec_helper'
 
 describe Projects::GitHttpController do
+  let_it_be(:project) { create(:project, :public, :repository) }
+  let(:project_params) do
+    {
+      namespace_id: project.namespace.to_param,
+      project_id: project.path + '.git'
+    }
+  end
+  let(:params) { project_params }
+
   describe 'HEAD #info_refs' do
     it 'returns 403' do
-      project = create(:project, :public, :repository)
-
       head :info_refs, params: { namespace_id: project.namespace.to_param, project_id: project.path + '.git' }
 
       expect(response.status).to eq(403)
@@ -14,18 +21,17 @@ describe Projects::GitHttpController do
   end
 
   describe 'GET #info_refs' do
+    let(:params) { project_params.merge(service: 'git-upload-pack') }
+
     it 'returns 401 for unauthenticated requests to public repositories when http protocol is disabled' do
       stub_application_setting(enabled_git_access_protocol: 'ssh')
-      project = create(:project, :public, :repository)
 
-      get :info_refs, params: { service: 'git-upload-pack', namespace_id: project.namespace.to_param, project_id: project.path + '.git' }
+      get :info_refs, params: params
 
       expect(response.status).to eq(401)
     end
 
     context 'with exceptions' do
-      let(:project) { create(:project, :public, :repository) }
-
       before do
         allow(controller).to receive(:verify_workhorse_api!).and_return(true)
       end
@@ -33,7 +39,7 @@ describe Projects::GitHttpController do
       it 'returns 503 with GRPC Unavailable' do
         allow(controller).to receive(:access_check).and_raise(GRPC::Unavailable)
 
-        get :info_refs, params: { service: 'git-upload-pack', namespace_id: project.namespace.to_param, project_id: project.path + '.git' }
+        get :info_refs, params: params
 
         expect(response.status).to eq(503)
       end
@@ -41,11 +47,27 @@ describe Projects::GitHttpController do
       it 'returns 503 with timeout error' do
         allow(controller).to receive(:access_check).and_raise(Gitlab::GitAccess::TimeoutError)
 
-        get :info_refs, params: { service: 'git-upload-pack', namespace_id: project.namespace.to_param, project_id: project.path + '.git' }
+        get :info_refs, params: params
 
         expect(response.status).to eq(503)
         expect(response.body).to eq 'Gitlab::GitAccess::TimeoutError'
       end
     end
   end
+
+  describe 'POST #git_upload_pack' do
+    before do
+      allow(controller).to receive(:authenticate_user).and_return(true)
+      allow(controller).to receive(:verify_workhorse_api!).and_return(true)
+      allow(controller).to receive(:access_check).and_return(nil)
+    end
+
+    after do
+      post :git_upload_pack, params: params
+    end
+
+    it 'updates project statistics' do
+      expect(ProjectDailyStatisticsWorker).to receive(:perform_async)
+    end
+  end
 end
diff --git a/spec/fixtures/api/schemas/public_api/v4/issue.json b/spec/fixtures/api/schemas/public_api/v4/issue.json
index 147f53239e0..bf1b4a06f0b 100644
--- a/spec/fixtures/api/schemas/public_api/v4/issue.json
+++ b/spec/fixtures/api/schemas/public_api/v4/issue.json
@@ -84,6 +84,11 @@
       "total_time_spent": { "type": "integer" },
       "human_time_estimate": { "type": ["string", "null"] },
       "human_total_time_spent": { "type": ["string", "null"] }
+    },
+    "references": {
+      "short": {"type": "string"},
+      "relative": {"type": "string"},
+      "full": {"type": "string"}
     }
   },
   "required": [
diff --git a/spec/fixtures/api/schemas/public_api/v4/merge_request.json b/spec/fixtures/api/schemas/public_api/v4/merge_request.json
index a423bf70b69..3bf1299a1d8 100644
--- a/spec/fixtures/api/schemas/public_api/v4/merge_request.json
+++ b/spec/fixtures/api/schemas/public_api/v4/merge_request.json
@@ -113,7 +113,12 @@
         "human_total_time_spent": { "type": ["string", "null"] }
       },
       "allow_collaboration": { "type": ["boolean", "null"] },
-      "allow_maintainer_to_push": { "type": ["boolean", "null"] }
+      "allow_maintainer_to_push": { "type": ["boolean", "null"] },
+      "references": {
+        "short": {"type": "string"},
+        "relative": {"type": "string"},
+        "full": {"type": "string"}
+      }
     },
     "required": [
       "id", "iid", "project_id", "title", "description",
diff --git a/spec/initializers/lograge_spec.rb b/spec/initializers/lograge_spec.rb
index 5dd296b6040..65652468d93 100644
--- a/spec/initializers/lograge_spec.rb
+++ b/spec/initializers/lograge_spec.rb
@@ -112,7 +112,7 @@ describe 'lograge', type: :request do
 
         expect(log_data['exception.class']).to eq('RuntimeError')
         expect(log_data['exception.message']).to eq('bad request')
-        expect(log_data['exception.backtrace']).to eq(Gitlab::Profiler.clean_backtrace(backtrace))
+        expect(log_data['exception.backtrace']).to eq(Gitlab::BacktraceCleaner.clean_backtrace(backtrace))
       end
     end
   end
diff --git a/spec/lib/gitlab/backtrace_cleaner_spec.rb b/spec/lib/gitlab/backtrace_cleaner_spec.rb
new file mode 100644
index 00000000000..f3aded9faad
--- /dev/null
+++ b/spec/lib/gitlab/backtrace_cleaner_spec.rb
@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::BacktraceCleaner do
+  describe '.clean_backtrace' do
+    it 'uses the Rails backtrace cleaner' do
+      backtrace = []
+
+      expect(Rails.backtrace_cleaner).to receive(:clean).with(backtrace)
+
+      described_class.clean_backtrace(backtrace)
+    end
+
+    it 'removes lines from IGNORE_BACKTRACES' do
+      backtrace = [
+        "lib/gitlab/gitaly_client.rb:294:in `block (2 levels) in migrate'",
+        "lib/gitlab/gitaly_client.rb:331:in `allow_n_plus_1_calls'",
+        "lib/gitlab/gitaly_client.rb:280:in `block in migrate'",
+        "lib/gitlab/metrics/influx_db.rb:103:in `measure'",
+        "lib/gitlab/gitaly_client.rb:278:in `migrate'",
+        "lib/gitlab/git/repository.rb:1451:in `gitaly_migrate'",
+        "lib/gitlab/git/commit.rb:66:in `find'",
+        "app/models/repository.rb:1047:in `find_commit'",
+        "lib/gitlab/metrics/instrumentation.rb:159:in `block in find_commit'",
+        "lib/gitlab/metrics/method_call.rb:36:in `measure'",
+        "lib/gitlab/metrics/instrumentation.rb:159:in `find_commit'",
+        "app/models/repository.rb:113:in `commit'",
+        "lib/gitlab/i18n.rb:50:in `with_locale'",
+        "lib/gitlab/middleware/multipart.rb:95:in `call'",
+        "lib/gitlab/request_profiler/middleware.rb:14:in `call'",
+        "ee/lib/gitlab/database/load_balancing/rack_middleware.rb:37:in `call'",
+        "ee/lib/gitlab/jira/middleware.rb:15:in `call'"
+      ]
+
+      expect(described_class.clean_backtrace(backtrace))
+        .to eq([
+                 "lib/gitlab/gitaly_client.rb:294:in `block (2 levels) in migrate'",
+                 "lib/gitlab/gitaly_client.rb:331:in `allow_n_plus_1_calls'",
+                 "lib/gitlab/gitaly_client.rb:280:in `block in migrate'",
+                 "lib/gitlab/gitaly_client.rb:278:in `migrate'",
+                 "lib/gitlab/git/repository.rb:1451:in `gitaly_migrate'",
+                 "lib/gitlab/git/commit.rb:66:in `find'",
+                 "app/models/repository.rb:1047:in `find_commit'",
+                 "app/models/repository.rb:113:in `commit'",
+                 "ee/lib/gitlab/jira/middleware.rb:15:in `call'"
+               ])
+    end
+  end
+end
diff --git a/spec/lib/gitlab/grape_logging/loggers/exception_logger_spec.rb b/spec/lib/gitlab/grape_logging/loggers/exception_logger_spec.rb
index 0cfda80b854..c9021e2f436 100644
--- a/spec/lib/gitlab/grape_logging/loggers/exception_logger_spec.rb
+++ b/spec/lib/gitlab/grape_logging/loggers/exception_logger_spec.rb
@@ -39,7 +39,7 @@ describe Gitlab::GrapeLogging::Loggers::ExceptionLogger do
         before do
           current_backtrace = caller
           allow(exception).to receive(:backtrace).and_return(current_backtrace)
-          expected['exception.backtrace'] = Gitlab::Profiler.clean_backtrace(current_backtrace)
+          expected['exception.backtrace'] = Gitlab::BacktraceCleaner.clean_backtrace(current_backtrace)
         end
 
         it 'includes the backtrace' do
diff --git a/spec/lib/gitlab/profiler_spec.rb b/spec/lib/gitlab/profiler_spec.rb
index a19392f4bcb..c27e3ca7ace 100644
--- a/spec/lib/gitlab/profiler_spec.rb
+++ b/spec/lib/gitlab/profiler_spec.rb
@@ -120,51 +120,6 @@ describe Gitlab::Profiler do
     end
   end
 
-  describe '.clean_backtrace' do
-    it 'uses the Rails backtrace cleaner' do
-      backtrace = []
-
-      expect(Rails.backtrace_cleaner).to receive(:clean).with(backtrace)
-
-      described_class.clean_backtrace(backtrace)
-    end
-
-    it 'removes lines from IGNORE_BACKTRACES' do
-      backtrace = [
-        "lib/gitlab/gitaly_client.rb:294:in `block (2 levels) in migrate'",
-        "lib/gitlab/gitaly_client.rb:331:in `allow_n_plus_1_calls'",
-        "lib/gitlab/gitaly_client.rb:280:in `block in migrate'",
-        "lib/gitlab/metrics/influx_db.rb:103:in `measure'",
-        "lib/gitlab/gitaly_client.rb:278:in `migrate'",
-        "lib/gitlab/git/repository.rb:1451:in `gitaly_migrate'",
-        "lib/gitlab/git/commit.rb:66:in `find'",
-        "app/models/repository.rb:1047:in `find_commit'",
-        "lib/gitlab/metrics/instrumentation.rb:159:in `block in find_commit'",
-        "lib/gitlab/metrics/method_call.rb:36:in `measure'",
-        "lib/gitlab/metrics/instrumentation.rb:159:in `find_commit'",
-        "app/models/repository.rb:113:in `commit'",
-        "lib/gitlab/i18n.rb:50:in `with_locale'",
-        "lib/gitlab/middleware/multipart.rb:95:in `call'",
-        "lib/gitlab/request_profiler/middleware.rb:14:in `call'",
-        "ee/lib/gitlab/database/load_balancing/rack_middleware.rb:37:in `call'",
-        "ee/lib/gitlab/jira/middleware.rb:15:in `call'"
-      ]
-
-      expect(described_class.clean_backtrace(backtrace))
-        .to eq([
-                 "lib/gitlab/gitaly_client.rb:294:in `block (2 levels) in migrate'",
-                 "lib/gitlab/gitaly_client.rb:331:in `allow_n_plus_1_calls'",
-                 "lib/gitlab/gitaly_client.rb:280:in `block in migrate'",
-                 "lib/gitlab/gitaly_client.rb:278:in `migrate'",
-                 "lib/gitlab/git/repository.rb:1451:in `gitaly_migrate'",
-                 "lib/gitlab/git/commit.rb:66:in `find'",
-                 "app/models/repository.rb:1047:in `find_commit'",
-                 "app/models/repository.rb:113:in `commit'",
-                 "ee/lib/gitlab/jira/middleware.rb:15:in `call'"
-               ])
-    end
-  end
-
   describe '.with_custom_logger' do
     context 'when the logger is set' do
       it 'uses the replacement logger for the duration of the block' do
diff --git a/spec/lib/gitlab/repository_cache_spec.rb b/spec/lib/gitlab/repository_cache_spec.rb
index 6a684595eb8..1b7dd1766da 100644
--- a/spec/lib/gitlab/repository_cache_spec.rb
+++ b/spec/lib/gitlab/repository_cache_spec.rb
@@ -3,8 +3,8 @@
 require 'spec_helper'
 
 describe Gitlab::RepositoryCache do
+  let_it_be(:project) { create(:project) }
   let(:backend) { double('backend').as_null_object }
-  let(:project) { create(:project) }
   let(:repository) { project.repository }
   let(:namespace) { "#{repository.full_path}:#{project.id}" }
   let(:cache) { described_class.new(repository, backend: backend) }
diff --git a/spec/lib/gitlab/repository_set_cache_spec.rb b/spec/lib/gitlab/repository_set_cache_spec.rb
index 87e51f801e5..de0f3602346 100644
--- a/spec/lib/gitlab/repository_set_cache_spec.rb
+++ b/spec/lib/gitlab/repository_set_cache_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 describe Gitlab::RepositorySetCache, :clean_gitlab_redis_cache do
-  let(:project) { create(:project) }
+  let_it_be(:project) { create(:project) }
   let(:repository) { project.repository }
   let(:namespace) { "#{repository.full_path}:#{project.id}" }
   let(:cache) { described_class.new(repository) }
diff --git a/spec/lib/gitlab/sidekiq_logging/exception_handler_spec.rb b/spec/lib/gitlab/sidekiq_logging/exception_handler_spec.rb
index 24b6090cb19..a79a0678e2b 100644
--- a/spec/lib/gitlab/sidekiq_logging/exception_handler_spec.rb
+++ b/spec/lib/gitlab/sidekiq_logging/exception_handler_spec.rb
@@ -33,7 +33,7 @@ describe Gitlab::SidekiqLogging::ExceptionHandler do
         error_class: 'RuntimeError',
         error_message: exception_message,
         context: 'Test',
-        error_backtrace: Gitlab::Profiler.clean_backtrace(backtrace)
+        error_backtrace: Gitlab::BacktraceCleaner.clean_backtrace(backtrace)
       )
 
       expect(logger).to receive(:warn).with(expected_data)
diff --git a/spec/requests/api/internal/base_spec.rb b/spec/requests/api/internal/base_spec.rb
index df55e9ad849..4fe0d4a5983 100644
--- a/spec/requests/api/internal/base_spec.rb
+++ b/spec/requests/api/internal/base_spec.rb
@@ -1000,6 +1000,22 @@ describe API::Internal::Base do
       it 'does not try to notify that project moved' do
         allow_any_instance_of(Gitlab::Identifier).to receive(:identify).and_return(nil)
 
+        expect(Gitlab::Checks::ProjectMoved).not_to receive(:fetch_message)
+
+        post api('/internal/post_receive'), params: valid_params
+
+        expect(response).to have_gitlab_http_status(200)
+      end
+    end
+
+    context 'when project is nil' do
+      let(:gl_repository) { 'project-foo' }
+
+      it 'does not try to notify that project moved' do
+        allow(Gitlab::GlRepository).to receive(:parse).and_return([nil, Gitlab::GlRepository::PROJECT])
+
+        expect(Gitlab::Checks::ProjectMoved).not_to receive(:fetch_message)
+
         post api('/internal/post_receive'), params: valid_params
 
         expect(response).to have_gitlab_http_status(200)
diff --git a/spec/requests/api/issues/get_group_issues_spec.rb b/spec/requests/api/issues/get_group_issues_spec.rb
index 3ee08758f99..ef63902ffd7 100644
--- a/spec/requests/api/issues/get_group_issues_spec.rb
+++ b/spec/requests/api/issues/get_group_issues_spec.rb
@@ -688,5 +688,32 @@ describe API::Issues do
         end
       end
     end
+
+    context "#to_reference" do
+      it 'exposes reference path in context of group' do
+        get api(base_url, user)
+
+        expect(json_response.first['references']['short']).to eq("##{group_closed_issue.iid}")
+        expect(json_response.first['references']['relative']).to eq("#{group_closed_issue.project.path}##{group_closed_issue.iid}")
+        expect(json_response.first['references']['full']).to eq("#{group_closed_issue.project.full_path}##{group_closed_issue.iid}")
+      end
+
+      context 'referencing from parent group' do
+        let(:parent_group) { create(:group) }
+
+        before do
+          group.update(parent_id: parent_group.id)
+          group_closed_issue.reload
+        end
+
+        it 'exposes reference path in context of parent group' do
+          get api("/groups/#{parent_group.id}/issues")
+
+          expect(json_response.first['references']['short']).to eq("##{group_closed_issue.iid}")
+          expect(json_response.first['references']['relative']).to eq("#{group_closed_issue.project.full_path}##{group_closed_issue.iid}")
+          expect(json_response.first['references']['full']).to eq("#{group_closed_issue.project.full_path}##{group_closed_issue.iid}")
+        end
+      end
+    end
   end
 end
diff --git a/spec/requests/api/issues/issues_spec.rb b/spec/requests/api/issues/issues_spec.rb
index 50a0a80b542..a3538aa98b1 100644
--- a/spec/requests/api/issues/issues_spec.rb
+++ b/spec/requests/api/issues/issues_spec.rb
@@ -805,6 +805,17 @@ describe API::Issues do
     end
   end
 
+  describe 'GET /projects/:id/issues/:issue_iid' do
+    it 'exposes full reference path' do
+      get api("/projects/#{project.id}/issues/#{issue.iid}", user)
+
+      expect(response).to have_gitlab_http_status(200)
+      expect(json_response['references']['short']).to eq("##{issue.iid}")
+      expect(json_response['references']['relative']).to eq("##{issue.iid}")
+      expect(json_response['references']['full']).to eq("#{project.parent.path}/#{project.path}##{issue.iid}")
+    end
+  end
+
   describe 'DELETE /projects/:id/issues/:issue_iid' do
     it 'rejects a non member from deleting an issue' do
       delete api("/projects/#{project.id}/issues/#{issue.iid}", non_member)
diff --git a/spec/requests/api/merge_requests_spec.rb b/spec/requests/api/merge_requests_spec.rb
index e5ad1a6378e..582bf19820d 100644
--- a/spec/requests/api/merge_requests_spec.rb
+++ b/spec/requests/api/merge_requests_spec.rb
@@ -736,6 +736,33 @@ describe API::MergeRequests do
 
       it_behaves_like 'merge requests list'
     end
+
+    context "#to_reference" do
+      it 'exposes reference path in context of group' do
+        get api("/groups/#{group.id}/merge_requests", user)
+
+        expect(json_response.first['references']['short']).to eq("!#{merge_request_merged.iid}")
+        expect(json_response.first['references']['relative']).to eq("#{merge_request_merged.target_project.path}!#{merge_request_merged.iid}")
+        expect(json_response.first['references']['full']).to eq("#{merge_request_merged.target_project.full_path}!#{merge_request_merged.iid}")
+      end
+
+      context 'referencing from parent group' do
+        let(:parent_group) { create(:group) }
+
+        before do
+          group.update(parent_id: parent_group.id)
+          merge_request_merged.reload
+        end
+
+        it 'exposes reference path in context of parent group' do
+          get api("/groups/#{parent_group.id}/merge_requests")
+
+          expect(json_response.first['references']['short']).to eq("!#{merge_request_merged.iid}")
+          expect(json_response.first['references']['relative']).to eq("#{merge_request_merged.target_project.full_path}!#{merge_request_merged.iid}")
+          expect(json_response.first['references']['full']).to eq("#{merge_request_merged.target_project.full_path}!#{merge_request_merged.iid}")
+        end
+      end
+    end
   end
 
   describe "GET /projects/:id/merge_requests/:merge_request_iid" do
@@ -783,6 +810,9 @@ describe API::MergeRequests do
       expect(json_response).not_to include('rebase_in_progress')
       expect(json_response['has_conflicts']).to be_falsy
       expect(json_response['blocking_discussions_resolved']).to be_truthy
+      expect(json_response['references']['short']).to eq("!#{merge_request.iid}")
+      expect(json_response['references']['relative']).to eq("!#{merge_request.iid}")
+      expect(json_response['references']['full']).to eq("#{merge_request.target_project.full_path}!#{merge_request.iid}")
     end
 
     it 'exposes description and title html when render_html is true' do
diff --git a/spec/services/merge_requests/get_urls_service_spec.rb b/spec/services/merge_requests/get_urls_service_spec.rb
index dcb8c8080a1..bb8a1873dac 100644
--- a/spec/services/merge_requests/get_urls_service_spec.rb
+++ b/spec/services/merge_requests/get_urls_service_spec.rb
@@ -45,6 +45,13 @@ describe MergeRequests::GetUrlsService do
       end
     end
 
+    context 'when project is nil' do
+      let(:project) { nil }
+      let(:changes) { default_branch_changes }
+
+      it_behaves_like 'no_merge_request_url'
+    end
+
     context 'pushing to default branch' do
       let(:changes) { default_branch_changes }
 
diff --git a/spec/support/helpers/query_recorder.rb b/spec/support/helpers/query_recorder.rb
index 9d47a0c23df..1d04014c9a6 100644
--- a/spec/support/helpers/query_recorder.rb
+++ b/spec/support/helpers/query_recorder.rb
@@ -16,7 +16,7 @@ module ActiveRecord
 
     def show_backtrace(values)
       Rails.logger.debug("QueryRecorder SQL: #{values[:sql]}")
-      Gitlab::Profiler.clean_backtrace(caller).each { |line| Rails.logger.debug("   --> #{line}") }
+      Gitlab::BacktraceCleaner.clean_backtrace(caller).each { |line| Rails.logger.debug("   --> #{line}") }
     end
 
     def callback(name, start, finish, message_id, values)
diff --git a/spec/support/helpers/test_env.rb b/spec/support/helpers/test_env.rb
index f2fa6af6402..bd945fe6409 100644
--- a/spec/support/helpers/test_env.rb
+++ b/spec/support/helpers/test_env.rb
@@ -245,8 +245,8 @@ module TestEnv
     end
   end
 
-  def copy_repo(project, bare_repo:, refs:)
-    target_repo_path = File.expand_path(repos_path + "/#{project.disk_path}.git")
+  def copy_repo(subject, bare_repo:, refs:)
+    target_repo_path = File.expand_path(repos_path + "/#{subject.disk_path}.git")
 
     FileUtils.mkdir_p(target_repo_path)
     FileUtils.cp_r("#{File.expand_path(bare_repo)}/.", target_repo_path)