Merge branch 'master' into feature/gb/persist-pipeline-stages

* master: (524 commits)
  Improve user experience around slash commands in instant comments
  Fix LFS timeouts when trying to save large files
  retryable? is now available for CommitStatus
  Resolve "Documentation of `.gitlab-ci.yml` states incorrect example for variables"
  Fix test failures
  Add slugify project path to CI enviroment variables
  Fixed typo: craeted -> created
  32118 Make New environment empty state btn lowercase
  Expose import_status in Projects API
  32832 Remove overflow from comment form for confidential issues and vertically aligns confidential issue icon
  Fix test failures
  Allow manual bypass of auto_sign_in_with_provider
  Fix keys seed
  Allow users to be hard-deleted from the API
  fixup some classnames and media queries
  Enable the Style/PreferredHashMethods cop
  Lint our factories creation in addition to their build
  Don’t schedule workers from inside transactions
  Allow scheduling from after_commit hooks
  Forbid Sidekiq scheduling in transactions
  ...

Conflicts:
	app/serializers/pipeline_entity.rb
	db/schema.rb
	spec/factories/ci/stages.rb
	spec/lib/gitlab/import_export/safe_model_attributes.yml
	spec/services/ci/create_pipeline_service_spec.rb
	spec/spec_helper.rb

6 files changed, 33 insertions, 28 deletions

diff --git a/lib/gitlab/ci/status/build/cancelable.rb b/lib/gitlab/ci/status/build/cancelable.rb
index 57b533bad99..439ef0ce015 100644
--- a/lib/gitlab/ci/status/build/cancelable.rb
+++ b/lib/gitlab/ci/status/build/cancelable.rb
@@ -12,7 +12,7 @@ module Gitlab
           end
 
           def action_path
-            cancel_namespace_project_build_path(subject.project.namespace,
+            cancel_namespace_project_job_path(subject.project.namespace,
                                                 subject.project,
                                                 subject)
           end
diff --git a/lib/gitlab/ci/status/build/common.rb b/lib/gitlab/ci/status/build/common.rb
index 3fec2c5d4db..b173c23fba4 100644
--- a/lib/gitlab/ci/status/build/common.rb
+++ b/lib/gitlab/ci/status/build/common.rb
@@ -8,7 +8,7 @@ module Gitlab
           end
 
           def details_path
-            namespace_project_build_path(subject.project.namespace,
+            namespace_project_job_path(subject.project.namespace,
                                          subject.project,
                                          subject)
           end
diff --git a/lib/gitlab/ci/status/build/play.rb b/lib/gitlab/ci/status/build/play.rb
index c6139f1b716..e80f3263794 100644
--- a/lib/gitlab/ci/status/build/play.rb
+++ b/lib/gitlab/ci/status/build/play.rb
@@ -20,7 +20,7 @@ module Gitlab
           end
 
           def action_path
-            play_namespace_project_build_path(subject.project.namespace,
+            play_namespace_project_job_path(subject.project.namespace,
                                               subject.project,
                                               subject)
           end
diff --git a/lib/gitlab/ci/status/build/retryable.rb b/lib/gitlab/ci/status/build/retryable.rb
index 505f80848b2..56303e4cb17 100644
--- a/lib/gitlab/ci/status/build/retryable.rb
+++ b/lib/gitlab/ci/status/build/retryable.rb
@@ -16,7 +16,7 @@ module Gitlab
           end
 
           def action_path
-            retry_namespace_project_build_path(subject.project.namespace,
+            retry_namespace_project_job_path(subject.project.namespace,
                                                subject.project,
                                                subject)
           end
diff --git a/lib/gitlab/ci/status/build/stop.rb b/lib/gitlab/ci/status/build/stop.rb
index 0b5199e5483..2778d6f3b52 100644
--- a/lib/gitlab/ci/status/build/stop.rb
+++ b/lib/gitlab/ci/status/build/stop.rb
@@ -20,7 +20,7 @@ module Gitlab
           end
 
           def action_path
-            play_namespace_project_build_path(subject.project.namespace,
+            play_namespace_project_job_path(subject.project.namespace,
                                               subject.project,
                                               subject)
           end
diff --git a/lib/gitlab/ci/trace/stream.rb b/lib/gitlab/ci/trace/stream.rb
index fa462cbe095..c4c0623df6c 100644
--- a/lib/gitlab/ci/trace/stream.rb
+++ b/lib/gitlab/ci/trace/stream.rb
@@ -73,7 +73,7 @@ module Gitlab
 
           match = ""
 
-          stream.each_line do |line|
+          reverse_line do |line|
             matches = line.scan(regex)
             next unless matches.is_a?(Array)
             next if matches.empty?
@@ -86,34 +86,39 @@ module Gitlab
           nil
         rescue
           # if bad regex or something goes wrong we dont want to interrupt transition
-          # so we just silentrly ignore error for now
+          # so we just silently ignore error for now
         end
 
         private
 
-        def read_last_lines(last_lines)
-          chunks = []
-          pos = lines = 0
-          max = stream.size
-
-          # We want an extra line to make sure fist line has full contents
-          while lines <= last_lines && pos < max
-            pos += BUFFER_SIZE
-
-            buf =
-              if pos <= max
-                stream.seek(-pos, IO::SEEK_END)
-                stream.read(BUFFER_SIZE)
-              else # Reached the head, read only left
-                stream.seek(0)
-                stream.read(BUFFER_SIZE - (pos - max))
-              end
-
-            lines += buf.count("\n")
-            chunks.unshift(buf)
+        def read_last_lines(limit)
+          to_enum(:reverse_line).first(limit).reverse.join
+        end
+
+        def reverse_line
+          stream.seek(0, IO::SEEK_END)
+          debris = ''
+
+          until (buf = read_backward(BUFFER_SIZE)).empty?
+            buf += debris
+            debris, *lines = buf.each_line.to_a
+            lines.reverse_each do |line|
+              yield(line.force_encoding('UTF-8'))
+            end
           end
 
-          chunks.join.lines.last(last_lines).join
+          yield(debris.force_encoding('UTF-8')) unless debris.empty?
+        end
+
+        def read_backward(length)
+          cur_offset = stream.tell
+          start = cur_offset - length
+          start = 0 if start < 0
+
+          stream.seek(start, IO::SEEK_SET)
+          stream.read(cur_offset - start).tap do
+            stream.seek(start, IO::SEEK_SET)
+          end
         end
       end
     end