Add checksum to ci_job_artifacts

app/models/ci/job_artifact.rb

@@ -6,6 +6,7 @@ module Ci
     belongs_to :job, class_name: "Ci::Build", foreign_key: :job_id
     before_save :set_size, if: :file_changed?
+    before_save :set_checksum, if: :file_changed?
     mount_uploader :file, JobArtifactUploader
@@ -25,6 +26,10 @@ module Ci
       self.size = file.size
     end
+    def set_checksum
+      self.checksum = file.checksum
+    end
+
     def expire_in
       expire_at - Time.now if expire_at
     end

app/uploaders/job_artifact_uploader.rb

@@ -9,6 +9,12 @@ class JobArtifactUploader < GitlabUploader
     model.size
   end
+  def checksum
+    return calc_checksum if model.checksum.nil?
+
+    model.checksum
+  end
+
   def store_dir
     dynamic_segment
   end
@@ -21,6 +27,10 @@ class JobArtifactUploader < GitlabUploader
   private
+  def calc_checksum
+    Digest::SHA256.file(file.path).hexdigest
+  end
+
   def dynamic_segment
     creation_date = model.created_at.utc.strftime('%Y_%m_%d')

db/migrate/20180226050030_add_checksum_to_ci_job_artifacts.rb

+class AddChecksumToCiJobArtifacts < ActiveRecord::Migration
+  DOWNTIME = false
+
+  def change
+    add_column :ci_job_artifacts, :checksum, :string, limit: 64
+  end
+end
+

db/schema.rb

@@ -346,6 +346,7 @@ ActiveRecord::Schema.define(version: 20180304204842) do
     t.datetime_with_timezone "updated_at", null: false
     t.datetime_with_timezone "expire_at"
     t.string "file"
+    t.string "checksum", limit: 64
   end
   add_index "ci_job_artifacts", ["expire_at", "job_id"], name: "index_ci_job_artifacts_on_expire_at_and_job_id", using: :btree