Add ci_job_trace_chunks table

app/models/ci/job_trace_chunk.rb

+module Ci
+  class JobTraceChunk < ActiveRecord::Base
+    extend Gitlab::Ci::Model
+
+    belongs_to :job, class_name: "Ci::Build", foreign_key: :job_id
+  end
+end

db/migrate/20180326202229_create_ci_job_trace_chunks.rb

+class CreateCiJobTraceChunks < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    create_table :ci_job_trace_chunks do |t|
+      t.integer :job_id, null: false
+      t.integer :chunk_index, null: false
+      t.text :data
+
+      t.foreign_key :ci_builds, column: :job_id, on_delete: :cascade
+      t.index [:chunk_index, :job_id], unique: true
+    end
+  end
+end

db/schema.rb

@@ -370,6 +370,22 @@ ActiveRecord::Schema.define(version: 20180327101207) do
   add_index "ci_job_artifacts", ["job_id", "file_type"], name: "index_ci_job_artifacts_on_job_id_and_file_type", unique: true, using: :btree
   add_index "ci_job_artifacts", ["project_id"], name: "index_ci_job_artifacts_on_project_id", using: :btree
 
+  create_table "ci_job_trace_chunks", force: :cascade do |t|
+    t.integer "job_id", null: false
+    t.integer "chunk_index", null: false
+    t.text "data"
+  end
+
+  add_index "ci_job_trace_chunks", ["chunk_index", "job_id"], name: "index_ci_job_trace_chunks_on_chunk_index_and_job_id", unique: true, using: :btree
+
+  create_table "ci_pipeline_chat_data", id: :bigserial, force: :cascade do |t|
+    t.integer "pipeline_id", null: false
+    t.integer "chat_name_id", null: false
+    t.text "response_url", null: false
+  end
+
+  add_index "ci_pipeline_chat_data", ["pipeline_id"], name: "index_ci_pipeline_chat_data_on_pipeline_id", unique: true, using: :btree
+
   create_table "ci_pipeline_schedule_variables", force: :cascade do |t|
     t.string "key", null: false
     t.text "value"
@@ -2044,6 +2060,9 @@ ActiveRecord::Schema.define(version: 20180327101207) do
   add_foreign_key "ci_group_variables", "namespaces", column: "group_id", name: "fk_33ae4d58d8", on_delete: :cascade
   add_foreign_key "ci_job_artifacts", "ci_builds", column: "job_id", on_delete: :cascade
   add_foreign_key "ci_job_artifacts", "projects", on_delete: :cascade
+  add_foreign_key "ci_job_trace_chunks", "ci_builds", column: "job_id", on_delete: :cascade
+  add_foreign_key "ci_pipeline_chat_data", "chat_names", on_delete: :cascade
+  add_foreign_key "ci_pipeline_chat_data", "ci_pipelines", column: "pipeline_id", on_delete: :cascade
   add_foreign_key "ci_pipeline_schedule_variables", "ci_pipeline_schedules", column: "pipeline_schedule_id", name: "fk_41c35fda51", on_delete: :cascade
   add_foreign_key "ci_pipeline_schedules", "projects", name: "fk_8ead60fcc4", on_delete: :cascade
   add_foreign_key "ci_pipeline_schedules", "users", column: "owner_id", name: "fk_9ea99f58d2", on_delete: :nullify