Create packages_helm_file_metadata table

Item 2.1 of https://gitlab.com/gitlab-org/gitlab/-/issues/18997#note_530270349

changelogs/unreleased/packages_helm_file_metadata_table.yml

+---
+title: Create packages_helm_file_metadata table
+merge_request: 57017
+author: Mathieu Parent
+type: added

db/migrate/20210316171009_create_packages_helm_file_metadata.rb

+# frozen_string_literal: true
+
+class CreatePackagesHelmFileMetadata < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    create_table_with_constraints :packages_helm_file_metadata, id: false do |t|
+      t.timestamps_with_timezone
+      t.references :package_file, primary_key: true, index: false, default: nil, null: false, foreign_key: { to_table: :packages_package_files, on_delete: :cascade }, type: :bigint
+      t.text :channel, null: false
+      t.jsonb :metadata
+
+      t.text_limit :channel, 63
+
+      t.index :channel
+    end
+  end
+end

db/schema_migrations/20210316171009

+b17c853b2bc82cfa83cd82b8023eca39d875d898b99e78c81d767a73391a0b75
\ No newline at end of file

db/structure.sql

@@ -15639,6 +15639,15 @@ CREATE SEQUENCE packages_events_id_seq
 
 ALTER SEQUENCE packages_events_id_seq OWNED BY packages_events.id;
 
+CREATE TABLE packages_helm_file_metadata (
+    created_at timestamp with time zone NOT NULL,
+    updated_at timestamp with time zone NOT NULL,
+    package_file_id bigint NOT NULL,
+    channel text NOT NULL,
+    metadata jsonb,
+    CONSTRAINT check_c34067922d CHECK ((char_length(channel) <= 63))
+);
+
 CREATE TABLE packages_maven_metadata (
     id bigint NOT NULL,
     package_id bigint NOT NULL,
@@ -21274,6 +21283,9 @@ ALTER TABLE ONLY packages_dependency_links
 ALTER TABLE ONLY packages_events
     ADD CONSTRAINT packages_events_pkey PRIMARY KEY (id);
 
+ALTER TABLE ONLY packages_helm_file_metadata
+    ADD CONSTRAINT packages_helm_file_metadata_pkey PRIMARY KEY (package_file_id);
+
 ALTER TABLE ONLY packages_maven_metadata
     ADD CONSTRAINT packages_maven_metadata_pkey PRIMARY KEY (id);
 
@@ -23609,6 +23621,8 @@ CREATE INDEX index_packages_dependency_links_on_dependency_id ON packages_depend
 
 CREATE INDEX index_packages_events_on_package_id ON packages_events USING btree (package_id);
 
+CREATE INDEX index_packages_helm_file_metadata_on_channel ON packages_helm_file_metadata USING btree (channel);
+
 CREATE INDEX index_packages_maven_metadata_on_package_id_and_path ON packages_maven_metadata USING btree (package_id, path);
 
 CREATE INDEX index_packages_maven_metadata_on_path ON packages_maven_metadata USING btree (path);
@@ -26647,6 +26661,9 @@ ALTER TABLE ONLY fork_network_members
 ALTER TABLE ONLY operations_feature_flag_scopes
     ADD CONSTRAINT fk_rails_a50a04d0a4 FOREIGN KEY (feature_flag_id) REFERENCES operations_feature_flags(id) ON DELETE CASCADE;
 
+ALTER TABLE ONLY packages_helm_file_metadata
+    ADD CONSTRAINT fk_rails_a559865345 FOREIGN KEY (package_file_id) REFERENCES packages_package_files(id) ON DELETE CASCADE;
+
 ALTER TABLE ONLY cluster_projects
     ADD CONSTRAINT fk_rails_a5a958bca1 FOREIGN KEY (cluster_id) REFERENCES clusters(id) ON DELETE CASCADE;