Add checksum column into vulnerability_remediations

db/migrate/20201119164605_add_checksum_into_vulnerability_remediations.rb

+# frozen_string_literal: true
+
+class AddChecksumIntoVulnerabilityRemediations < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :vulnerability_remediations, :checksum, :binary, null: false, comment: 'Stores the SHA256 checksum of the attached diff file' # rubocop:disable Rails/NotNullColumn
+
+    add_index :vulnerability_remediations, :checksum, unique: true # rubocop:disable Migration/AddIndex (Table is empty)
+  end
+end

db/schema_migrations/20201119164605

+5abd2cfdf96b493f8d3ecc857f850acb95e3ea30307a72c2e6f20c5feff8f5e7
\ No newline at end of file

db/structure.sql

@@ -17341,10 +17341,13 @@ CREATE TABLE vulnerability_remediations (
     file_store smallint,
     summary text NOT NULL,
     file text NOT NULL,
+    checksum bytea NOT NULL,
     CONSTRAINT check_ac0ccabff3 CHECK ((char_length(summary) <= 200)),
     CONSTRAINT check_fe3325e3ba CHECK ((char_length(file) <= 255))
 );
 
+COMMENT ON COLUMN vulnerability_remediations.checksum IS 'Stores the SHA256 checksum of the attached diff file';
+
 CREATE SEQUENCE vulnerability_remediations_id_seq
     START WITH 1
     INCREMENT BY 1
@@ -22309,6 +22312,8 @@ CREATE UNIQUE INDEX index_vulnerability_occurrences_on_uuid ON vulnerability_occ
 
 CREATE INDEX index_vulnerability_occurrences_on_vulnerability_id ON vulnerability_occurrences USING btree (vulnerability_id);
 
+CREATE UNIQUE INDEX index_vulnerability_remediations_on_checksum ON vulnerability_remediations USING btree (checksum);
+
 CREATE UNIQUE INDEX index_vulnerability_scanners_on_project_id_and_external_id ON vulnerability_scanners USING btree (project_id, external_id);
 
 CREATE INDEX index_vulnerability_statistics_on_letter_grade ON vulnerability_statistics USING btree (letter_grade);