Export the generateRuleHashAcronym helper

Change-type: minor

src/AbstractSQLCompiler.ts

@@ -13,7 +13,7 @@ import {
 export { Binding, SqlResult } from './AbstractSQLRules2SQL';
 import sbvrTypes from '@balena/sbvr-types';
 import * as _ from 'lodash';
-import { optimizeSchema } from './AbstractSQLSchemaOptimiser';
+import { optimizeSchema, generateRuleSlug } from './AbstractSQLSchemaOptimiser';
 import {
 	getReferencedFields,
 	getRuleReferencedFields,
@@ -1082,6 +1082,7 @@ CREATE TABLE ${ifNotExistsStr}"${table.name}" (
 const generateExport = (engine: Engines, ifNotExists: boolean) => {
 	return {
 		optimizeSchema,
+		generateRuleSlug,
 		compileSchema: (abstractSqlModel: AbstractSqlModel) =>
 			compileSchema(abstractSqlModel, engine, ifNotExists),
 		compileRule: (abstractSQL: AbstractSqlQuery) =>

src/AbstractSQLSchemaOptimiser.ts

@@ -32,6 +32,17 @@ const countFroms = (n: AbstractSqlType[]) => {
 	return count;
 };
 
+export const generateRuleSlug = (
+	tableName: string,
+	ruleBody: AbstractSqlType,
+) => {
+	const sha = sbvrTypes.SHA.validateSync(
+		`${tableName}$${JSON.stringify(ruleBody)}`,
+	).replace(/^\$sha256\$/, '');
+	// Trim the trigger to a max of 63 characters, reserving at least 32 characters for the hash
+	return `${tableName.slice(0, 30)}$${sha}`.slice(0, 63);
+};
+
 export const optimizeSchema = (
 	abstractSqlModel: AbstractSqlModel,
 	createCheckConstraints: boolean = true,
@@ -110,10 +121,6 @@ export const optimizeSchema = (
 						convertReferencedFieldsToFields(whereNode);
 
 						const tableName = fromNode[1];
-						const sha = sbvrTypes.SHA.validateSync(
-							`${tableName}$${JSON.stringify(ruleBody)}`,
-						).replace(/^\$sha256\$/, '');
-
 						const table = _.find(
 							abstractSqlModel.tables,
 							(t) => t.name === tableName,
@@ -122,8 +129,7 @@ export const optimizeSchema = (
 							table.checks ??= [];
 							table.checks!.push({
 								description: ruleSE,
-								// Trim the trigger to a max of 63 characters, reserving at least 32 characters for the hash
-								name: `${tableName.slice(0, 30)}$${sha}`.slice(0, 63),
+								name: generateRuleSlug(tableName, ruleBody),
 								abstractSql: whereNode,
 							});
 							return;