Trace as artifacts

app/models/ci/build.rb

@@ -21,6 +21,7 @@ module Ci
     has_many :job_artifacts, class_name: 'Ci::JobArtifact', foreign_key: :job_id, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
     has_one :job_artifacts_archive, -> { where(file_type: Ci::JobArtifact.file_types[:archive]) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
     has_one :job_artifacts_metadata, -> { where(file_type: Ci::JobArtifact.file_types[:metadata]) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
+    has_one :job_artifacts_trace, -> { where(file_type: Ci::JobArtifact.file_types[:trace]) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
     # The "environment" field for builds is a String, and is the unexpanded name
     def persisted_environment

app/models/ci/job_artifact.rb

@@ -9,9 +9,12 @@ module Ci
     mount_uploader :file, JobArtifactUploader
+    delegate :open, :exists?, to: :file
+
     enum file_type: {
       archive: 1,
-      metadata: 2
+      metadata: 2,
+      trace: 3
     }
     def self.artifacts_size_for(project)

app/uploaders/job_artifact_uploader.rb

@@ -13,6 +13,10 @@ class JobArtifactUploader < GitlabUploader
     dynamic_segment
   end
+  def open
+    File.open(path, "rb")
+  end
+
   private
   def dynamic_segment

lib/api/runner.rb

@@ -120,7 +120,16 @@ module API
       put '/:id' do
         job = authenticate_job!
-        job.trace.set(params[:trace]) if params[:trace]
+        if params[:trace]
+          # Overwrite live-trace by full-trace
+          job.trace.set(params[:trace])
+
+          # Move full-trace to JobArtifactUploader#default_path
+          job.build_job_artifacts_trace(
+            project: job.project,
+            file_type: :trace,
+            file: UploadedFile.new(job.trace.current_path, 'trace.log'))
+        end
         Gitlab::Metrics.add_event(:update_build,
                                   project: job.project.full_path)

lib/gitlab/ci/trace.rb

@@ -52,12 +52,14 @@ module Gitlab
       end
       def exist?
-        current_path.present? || old_trace.present?
+        trace_artifact&.exists? || current_path.present? || old_trace.present?
       end
       def read
         stream = Gitlab::Ci::Trace::Stream.new do
-          if current_path
+          if trace_artifact
+            trace_artifact.open
+          elsif current_path
             File.open(current_path, "rb")
           elsif old_trace
             StringIO.new(old_trace)
@@ -104,12 +106,6 @@ module Gitlab
         end
       end
-      def current_path
-        @current_path ||= paths.find do |trace_path|
-          File.exist?(trace_path)
-        end
-      end
-
       def paths
         [
           default_path,
@@ -117,6 +113,12 @@ module Gitlab
         ].compact
       end
+      def current_path
+        @current_path ||= paths.find do |trace_path|
+          File.exist?(trace_path)
+        end
+      end
+
       def default_directory
         File.join(
           Settings.gitlab_ci.builds_path,
@@ -137,6 +139,10 @@ module Gitlab
           "#{job.id}.log"
         ) if job.project&.ci_id
       end
+
+      def trace_artifact
+        job.job_artifacts_trace
+      end
     end
   end
 end