Merge remote-tracking branch 'upstream/master' into retry-cancelled-pipelinesretry-cancelled-pipelines

* upstream/master: (58 commits)
  Update endpoint to username validator
  change border color to variable
  Add todo for deprecated user routes and more information about deprecation to changelog
  Provide better error message to the user
  Apply better hierarchy to markdown headers and issue/mr titles
  Swapped button text manipulation outcomes for the toggle query
  Fixed find file keyboard navigation
  Update CHANGELOG for 8.12.7
  Added download-button class and applied button margin
  Enable activerecord_sane_schema_dumper for test
  Updated logo from @luke
  Fix broken specs on MySQL after https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6896
  Fix Test Env (proper error handling when gitlab-shell is not clonned)
  Fix randomly crashing spinach test for merge request
  [Great spinach fix] Replace gsub with delete
  Remove carriage returns from commit description as summary is on a newline and will always include carriage returns
  Convert due_date_select.js filetype to es6.
  Stop directly parsing due_date with Date.parse, prefer parsing implicitly.
  Improve spec for pipeline metrics worker
  Add Pipeline metrics worker
  ...

2 files changed, 7 insertions, 5 deletions

diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index a78b33988be..e75fe6c222b 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -49,6 +49,10 @@ module Ci
         transition any => :canceled
       end
 
+      # IMPORTANT
+      # Do not add any operations to this state_machine
+      # Create a separate worker for each new operation
+
       before_transition [:created, :pending] => :running do |pipeline|
         pipeline.started_at = Time.now
       end
@@ -62,13 +66,11 @@ module Ci
       end
 
       after_transition [:created, :pending] => :running do |pipeline|
-        MergeRequest::Metrics.where(merge_request_id: pipeline.merge_requests.map(&:id)).
-          update_all(latest_build_started_at: pipeline.started_at, latest_build_finished_at: nil)
+        pipeline.run_after_commit { PipelineMetricsWorker.perform_async(id) }
       end
 
       after_transition any => [:success] do |pipeline|
-        MergeRequest::Metrics.where(merge_request_id: pipeline.merge_requests.map(&:id)).
-          update_all(latest_build_finished_at: pipeline.finished_at)
+        pipeline.run_after_commit { PipelineMetricsWorker.perform_async(id) }
       end
 
       after_transition [:created, :pending, :running] => :success do |pipeline|
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 5ccfe11a2a2..8c6905a442d 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -871,7 +871,7 @@ class MergeRequest < ActiveRecord::Base
       # files.
       conflicts.files.each(&:lines)
       @conflicts_can_be_resolved_in_ui = conflicts.files.length > 0
-    rescue Rugged::OdbError, Gitlab::Conflict::Parser::ParserError, Gitlab::Conflict::FileCollection::ConflictSideMissing
+    rescue Rugged::OdbError, Gitlab::Conflict::Parser::UnresolvableError, Gitlab::Conflict::FileCollection::ConflictSideMissing
       @conflicts_can_be_resolved_in_ui = false
     end
   end