Rename vulnerability fingerprints indexes

Renaming the indexes will make renaming the fingeprint_sha256 column
easier

changelogs/unreleased/rename-vuln-fingerprint-indexes.yml

+---
+title: Rename vulnerability fingerprints indexes
+merge_request: 55552
+author:
+type: other

db/migrate/20210302212623_rename_vuln_fingerprints_indexes.rb

+# frozen_string_literal: true
+
+class RenameVulnFingerprintsIndexes < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  FINGERPRINT_IDX = :idx_vuln_fingerprints_on_occurrences_id_and_fingerprint
+  FINGERPRINT_IDX_RENAMED = :idx_vuln_fingerprints_on_occurrences_id_and_fingerprint_sha256
+  UNIQ_IDX = :idx_vuln_fingerprints_uniqueness
+  UNIQ_IDX_RENAMED = :idx_vuln_fingerprints_uniqueness_fingerprint_sha256
+
+  disable_ddl_transaction!
+
+  def up
+    # These `unless` checks are necessary for re-running the migrations multiple times
+    unless index_exists_by_name?(:vulnerability_finding_fingerprints, FINGERPRINT_IDX_RENAMED)
+      rename_index :vulnerability_finding_fingerprints, FINGERPRINT_IDX, FINGERPRINT_IDX_RENAMED
+    end
+
+    unless index_exists_by_name?(:vulnerability_finding_fingerprints, UNIQ_IDX_RENAMED)
+      rename_index :vulnerability_finding_fingerprints, UNIQ_IDX, UNIQ_IDX_RENAMED
+    end
+  end
+
+  def down
+    unless index_exists_by_name?(:vulnerability_finding_fingerprints, FINGERPRINT_IDX)
+      rename_index :vulnerability_finding_fingerprints, FINGERPRINT_IDX_RENAMED, FINGERPRINT_IDX
+    end
+
+    unless index_exists_by_name?(:vulnerability_finding_fingerprints, UNIQ_IDX)
+      rename_index :vulnerability_finding_fingerprints, UNIQ_IDX_RENAMED, UNIQ_IDX
+    end
+  end
+end

db/schema_migrations/20210302212623

+283645d1791a8d72fa7e327799ede933d89bd69d8db2a87b7ff437a2f5d74da3
\ No newline at end of file

db/structure.sql

@@ -21483,9 +21483,9 @@ CREATE INDEX idx_security_scans_on_scan_type ON security_scans USING btree (scan
 
 CREATE UNIQUE INDEX idx_serverless_domain_cluster_on_clusters_applications_knative ON serverless_domain_cluster USING btree (clusters_applications_knative_id);
 
-CREATE UNIQUE INDEX idx_vuln_fingerprints_on_occurrences_id_and_fingerprint ON vulnerability_finding_fingerprints USING btree (finding_id, fingerprint_sha256);
+CREATE UNIQUE INDEX idx_vuln_fingerprints_on_occurrences_id_and_fingerprint_sha256 ON vulnerability_finding_fingerprints USING btree (finding_id, fingerprint_sha256);
 
-CREATE UNIQUE INDEX idx_vuln_fingerprints_uniqueness ON vulnerability_finding_fingerprints USING btree (finding_id, algorithm_type, fingerprint_sha256);
+CREATE UNIQUE INDEX idx_vuln_fingerprints_uniqueness_fingerprint_sha256 ON vulnerability_finding_fingerprints USING btree (finding_id, algorithm_type, fingerprint_sha256);
 
 CREATE UNIQUE INDEX idx_vulnerability_ext_issue_links_on_vulne_id_and_ext_issue ON vulnerability_external_issue_links USING btree (vulnerability_id, external_type, external_project_key, external_issue_key);