Remove unused projects.ci_id column

And remove Gitlab::Ci::Trace#deprecated_path as it relies on ci_id
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/models/project.rb

@@ -56,6 +56,7 @@ class Project < ApplicationRecord
   VALID_MIRROR_PROTOCOLS = %w(http https ssh git).freeze
 
   ignore_column :import_status, :import_jid, :import_error
+  ignore_column :ci_id
 
   cache_markdown_field :description, pipeline: :description
 

db/post_migrate/20190424134256_drop_projects_ci_id.rb

+# frozen_string_literal: true
+
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class DropProjectsCiId < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    if index_exists?(:projects, :ci_id)
+      remove_concurrent_index :projects, :ci_id
+    end
+
+    if column_exists?(:projects, :ci_id)
+      remove_column :projects, :ci_id
+    end
+  end
+
+  def down
+    add_column :projects, :ci_id, :integer
+    add_concurrent_index :projects, :ci_id
+  end
+end

db/schema.rb

@@ -1737,7 +1737,6 @@ ActiveRecord::Schema.define(version: 20190426180107) do
     t.string "import_type"
     t.string "import_source"
     t.text "import_error"
-    t.integer "ci_id"
     t.boolean "shared_runners_enabled", default: true, null: false
     t.string "runners_token"
     t.string "build_coverage_regex"
@@ -1776,7 +1775,6 @@ ActiveRecord::Schema.define(version: 20190426180107) do
     t.string "bfg_object_map"
     t.boolean "detected_repository_languages"
     t.string "external_authorization_classification_label"
-    t.index ["ci_id"], name: "index_projects_on_ci_id", using: :btree
     t.index ["created_at"], name: "index_projects_on_created_at", using: :btree
     t.index ["creator_id"], name: "index_projects_on_creator_id", using: :btree
     t.index ["description"], name: "index_projects_on_description_trigram", using: :gin, opclasses: {"description"=>"gin_trgm_ops"}

lib/gitlab/ci/trace.rb

@@ -209,10 +209,7 @@ module Gitlab
       end
 
       def paths
-        [
-          default_path,
-          deprecated_path
-        ].compact
+        [default_path]
       end
 
       def default_directory
@@ -227,15 +224,6 @@ module Gitlab
         File.join(default_directory, "#{job.id}.log")
       end
 
-      def deprecated_path
-        File.join(
-          Settings.gitlab_ci.builds_path,
-          job.created_at.utc.strftime("%Y_%m"),
-          job.project.ci_id.to_s,
-          "#{job.id}.log"
-        ) if job.project&.ci_id
-      end
-
       def trace_artifact
         job.job_artifacts_trace
       end

spec/support/shared_examples/ci_trace_shared_examples.rb

@@ -329,14 +329,6 @@ shared_examples_for 'trace with disabled live trace feature' do
       it_behaves_like 'read successfully with IO'
     end
 
-    context 'when current_path (with project_ci_id) exists' do
-      before do
-        expect(trace).to receive(:deprecated_path) { expand_fixture_path('trace/sample_trace') }
-      end
-
-      it_behaves_like 'read successfully with IO'
-    end
-
     context 'when db trace exists' do
       before do
         build.send(:write_attribute, :trace, "data")
@@ -396,37 +388,6 @@ shared_examples_for 'trace with disabled live trace feature' do
       end
     end
 
-    context 'deprecated path' do
-      let(:path) { trace.send(:deprecated_path) }
-
-      context 'with valid ci_id' do
-        before do
-          build.project.update(ci_id: 1000)
-
-          FileUtils.mkdir_p(File.dirname(path))
-
-          File.open(path, "w") do |file|
-            file.write("data")
-          end
-        end
-
-        it "trace exist" do
-          expect(trace.exist?).to be(true)
-        end
-
-        it "can be erased" do
-          trace.erase!
-          expect(trace.exist?).to be(false)
-        end
-      end
-
-      context 'without valid ci_id' do
-        it "does not return deprecated path" do
-          expect(path).to be_nil
-        end
-      end
-    end
-
     context 'stored in database' do
       before do
         build.send(:write_attribute, :trace, "data")