feat: implement persistedDocuments.hashAlgorithm

.changeset/orange-tables-cry.md

@@ -0,0 +1,5 @@
+---
+'@graphql-codegen/client-preset': minor
+---
+
+Implement the ability the specify the hash algorithm used for persisted documents via `persistedDocuments.hashAlgorithm`

packages/presets/client/src/index.ts

@@ -83,6 +83,15 @@ export type ClientPresetConfig = {
          * @description Name of the property that will be added to the `DocumentNode` with the hash of the operation.
          */
         hashPropertyName?: string;
+        /**
+         * @description Algorithm used to generate the hash, could be useful if your server expects something specific (e.g., Apollo Server expects `sha256`).
+         *
+         * The algorithm parameter is typed with known algorithms and as a string rather than a union because it solely depends on Crypto's algorithms supported
+         * by the version of OpenSSL on the platform.
+         *
+         * @default `sha1`
+         */
+        hashAlgorithm?: 'sha1' | 'sha256' | (string & {});
       };
 };
 
@@ -143,6 +152,10 @@ export const preset: Types.OutputPreset<ClientPresetConfig> = {
           omitDefinitions:
             (typeof options.presetConfig.persistedDocuments === 'object' &&
               options.presetConfig.persistedDocuments.mode) === 'replaceDocumentWithHash' || false,
+          hashAlgorithm:
+            (typeof options.presetConfig.persistedDocuments === 'object' &&
+              options.presetConfig.persistedDocuments.hashAlgorithm) ||
+            'sha1',
         }
       : null;
 
@@ -180,7 +193,7 @@ export const preset: Types.OutputPreset<ClientPresetConfig> = {
 
       if (persistedDocuments) {
         const documentString = normalizeAndPrintDocumentNode(documentNode);
-        const hash = generateDocumentHash(documentString);
+        const hash = generateDocumentHash(documentString, persistedDocuments.hashAlgorithm);
         persistedDocumentsMap.set(hash, documentString);
         return { ...meta, [persistedDocuments.hashPropertyName]: hash };
       }

packages/presets/client/src/persisted-documents.ts

@@ -5,8 +5,8 @@ import { type DocumentNode, Kind, visit } from 'graphql';
 /**
  * This function generates a hash from a document node.
  */
-export function generateDocumentHash(operation: string): string {
-  const shasum = crypto.createHash('sha1');
+export function generateDocumentHash(operation: string, algorithm: 'sha1' | 'sha256' | (string & {})): string {
+  const shasum = crypto.createHash(algorithm);
   shasum.update(operation);
   return shasum.digest('hex');
 }

packages/presets/client/tests/client-preset.spec.ts

@@ -1573,6 +1573,85 @@ export * from "./gql.js";`);
         export const BbbDocument = {"__meta__":{"cacheKeys":["bbb"],"hash":"2a8e0849914b13ebc13b112ba5a502678d757511"},"kind":"Document","definitions":[{"kind":"OperationDefinition","operation":"query","name":{"kind":"Name","value":"bbb"},"selectionSet":{"kind":"SelectionSet","selections":[{"kind":"Field","name":{"kind":"Name","value":"b"}}]}}]} as unknown as DocumentNode<BbbQuery, BbbQueryVariables>;"
       `);
     });
+
+    it('hashAlgorithm="sha256"', async () => {
+      const result = await executeCodegen({
+        schema: [
+          /* GraphQL */ `
+            type Query {
+              a: String
+              b: String
+              c: String
+            }
+          `,
+        ],
+        documents: path.join(__dirname, 'fixtures/simple-uppercase-operation-name.ts'),
+        generates: {
+          'out1/': {
+            preset,
+            presetConfig: {
+              persistedDocuments: {
+                hashAlgorithm: 'sha256',
+              },
+            },
+          },
+        },
+        emitLegacyCommonJSImports: false,
+      });
+
+      expect(result).toHaveLength(5);
+
+      const persistedDocuments = result.find(file => file.filename === 'out1/persisted-documents.json');
+
+      expect(persistedDocuments.content).toMatchInlineSnapshot(`
+        "{
+          "7d0eedabb966107835cf307a0ebaf93b5d2cb8c30228611ffe3d27a53c211a0c": "query A { a }",
+          "a62a11aa72041e38d8c12ef77e1e7c208d9605db60bb5abb1717e8af98e4b410": "query B { b }"
+        }"
+      `);
+
+      const graphqlFile = result.find(file => file.filename === 'out1/graphql.ts');
+      expect(graphqlFile.content).toMatchInlineSnapshot(`
+        "/* eslint-disable */
+        import { TypedDocumentNode as DocumentNode } from '@graphql-typed-document-node/core';
+        export type Maybe<T> = T | null;
+        export type InputMaybe<T> = Maybe<T>;
+        export type Exact<T extends { [key: string]: unknown }> = { [K in keyof T]: T[K] };
+        export type MakeOptional<T, K extends keyof T> = Omit<T, K> & { [SubKey in K]?: Maybe<T[SubKey]> };
+        export type MakeMaybe<T, K extends keyof T> = Omit<T, K> & { [SubKey in K]: Maybe<T[SubKey]> };
+        /** All built-in and custom scalars, mapped to their actual values */
+        export type Scalars = {
+          ID: string;
+          String: string;
+          Boolean: boolean;
+          Int: number;
+          Float: number;
+        };
+
+        export type Query = {
+          __typename?: 'Query';
+          a?: Maybe<Scalars['String']>;
+          b?: Maybe<Scalars['String']>;
+          c?: Maybe<Scalars['String']>;
+        };
+
+        export type AQueryVariables = Exact<{ [key: string]: never; }>;
+
+
+        export type AQuery = { __typename?: 'Query', a?: string | null };
+
+        export type BQueryVariables = Exact<{ [key: string]: never; }>;
+
+
+        export type BQuery = { __typename?: 'Query', b?: string | null };
+
+        export type CFragment = { __typename?: 'Query', c?: string | null } & { ' $fragmentName'?: 'CFragment' };
+
+        export const CFragmentDoc = {"kind":"Document","definitions":[{"kind":"FragmentDefinition","name":{"kind":"Name","value":"C"},"typeCondition":{"kind":"NamedType","name":{"kind":"Name","value":"Query"}},"selectionSet":{"kind":"SelectionSet","selections":[{"kind":"Field","name":{"kind":"Name","value":"c"}}]}}]} as unknown as DocumentNode<CFragment, unknown>;
+        export const ADocument = {"__meta__":{"hash":"7d0eedabb966107835cf307a0ebaf93b5d2cb8c30228611ffe3d27a53c211a0c"},"kind":"Document","definitions":[{"kind":"OperationDefinition","operation":"query","name":{"kind":"Name","value":"A"},"selectionSet":{"kind":"SelectionSet","selections":[{"kind":"Field","name":{"kind":"Name","value":"a"}}]}}]} as unknown as DocumentNode<AQuery, AQueryVariables>;
+        export const BDocument = {"__meta__":{"hash":"a62a11aa72041e38d8c12ef77e1e7c208d9605db60bb5abb1717e8af98e4b410"},"kind":"Document","definitions":[{"kind":"OperationDefinition","operation":"query","name":{"kind":"Name","value":"B"},"selectionSet":{"kind":"SelectionSet","selections":[{"kind":"Field","name":{"kind":"Name","value":"b"}}]}}]} as unknown as DocumentNode<BQuery, BQueryVariables>;"
+      `);
+    });
   });
 
   it('correctly handle fragment references', async () => {