Add uuid column to the security_findings table

changelogs/unreleased/issue-277325.yml

+---
+title: Add uuid column into security_findings table
+merge_request: 48968
+author: Harrison Brock @harrisonbrock
+type: added

db/migrate/20201202025644_add_column_to_security_findings.rb

+# frozen_string_literal: true
+#
+class AddColumnToSecurityFindings < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :security_findings, :uuid, :uuid
+  end
+end

db/migrate/20201202025937_add_index_to_security_findings_uuid.rb

+# frozen_string_literal: true
+
+class AddIndexToSecurityFindingsUuid < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+  INDEX_NAME = 'index_security_findings_on_uuid'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :security_findings, :uuid, name: INDEX_NAME, unique: true
+  end
+
+  def down
+    remove_concurrent_index_by_name :security_findings, INDEX_NAME
+  end
+end

db/schema_migrations/20201202025644

+3b0e685327e2199e0a6721e00d1fa3c9fee3a173ce1cf5ddd99df3349a28fea9
\ No newline at end of file

db/schema_migrations/20201202025937

+d0706f4a60ae6f26be206aee80fdeb4a7e5c4c0b99e518140ae3cb8c47ed7a82
\ No newline at end of file

db/structure.sql

@@ -16178,6 +16178,7 @@ CREATE TABLE security_findings (
     project_fingerprint text NOT NULL,
     deduplicated boolean DEFAULT false NOT NULL,
     "position" integer,
+    uuid uuid,
     CONSTRAINT check_b9508c6df8 CHECK ((char_length(project_fingerprint) <= 40))
 );
 
@@ -22180,6 +22181,8 @@ CREATE INDEX index_security_findings_on_scanner_id ON security_findings USING bt
 
 CREATE INDEX index_security_findings_on_severity ON security_findings USING btree (severity);
 
+CREATE UNIQUE INDEX index_security_findings_on_uuid ON security_findings USING btree (uuid);
+
 CREATE INDEX index_self_managed_prometheus_alert_events_on_environment_id ON self_managed_prometheus_alert_events USING btree (environment_id);
 
 CREATE INDEX index_sent_notifications_on_noteable_type_noteable_id ON sent_notifications USING btree (noteable_id) WHERE ((noteable_type)::text = 'Issue'::text);