From 619c4507408b01a7c867cf310d6bf886059f4a80 Mon Sep 17 00:00:00 2001 From: Lee Byron Date: Mon, 10 May 2021 11:44:12 -0700 Subject: [PATCH] Preserve defaultValue literals Fixes #3051 This change solves the problem of default values defined via SDL not always resolving correctly through introspection by preserving the original GraphQL literal in the schema definition. This changes argument and input field definitions `defaultValue` field from just the "value" to a new `GraphQLDefaultValueUsage` type which contains either or both "value" and "literal" fields. Since either of these fields may be set, new functions for resolving a value or literal from either have been added - `getLiteralDefaultValue` and `getCoercedDefaultValue` - these replace uses that either assumed a set value or were manually converting a value back to a literal. Here is the flow for how a default value defined in an SDL would be converted into a functional schema and back to an SDL: **Before this change:** ``` (SDL) --parse-> (AST) --coerceInputLiteral--> (defaultValue config) --valueToAST--> (AST) --print --> (SDL) ``` `coerceInputLiteral` performs coercion which is a one-way function, and `valueToAST` is unsafe and set to be deprecated in #3049. **After this change:** ``` (SDL) --parse-> (defaultValue literal config) --print --> (SDL) ``` --- src/execution/values.ts | 15 +++-- src/index.ts | 1 + src/type/__tests__/definition-test.ts | 60 +++++++++++++++++++ src/type/definition.ts | 37 ++++++++++-- src/type/index.ts | 1 + src/type/introspection.ts | 9 ++- src/utilities/TypeInfo.ts | 5 +- .../__tests__/buildClientSchema-test.ts | 23 +++++++ .../__tests__/coerceInputValue-test.ts | 36 ++++++++++- src/utilities/buildClientSchema.ts | 13 ++-- src/utilities/coerceInputValue.ts | 39 ++++++++++-- src/utilities/extendSchema.ts | 10 +--- src/utilities/findBreakingChanges.ts | 8 ++- src/utilities/printSchema.ts | 9 ++- src/validation/ValidationContext.ts | 3 +- .../rules/VariablesInAllowedPositionRule.ts | 7 ++- 16 files changed, 230 insertions(+), 46 deletions(-) diff --git a/src/execution/values.ts b/src/execution/values.ts index 2435cf3bee..edba1d0ca9 100644 --- a/src/execution/values.ts +++ b/src/execution/values.ts @@ -19,6 +19,7 @@ import type { GraphQLDirective } from '../type/directives.js'; import type { GraphQLSchema } from '../type/schema.js'; import { + coerceDefaultValue, coerceInputLiteral, coerceInputValue, } from '../utilities/coerceInputValue.js'; @@ -169,8 +170,11 @@ export function getArgumentValues( const argumentNode = argNodeMap.get(name); if (argumentNode == null) { - if (argDef.defaultValue !== undefined) { - coercedValues[name] = argDef.defaultValue; + if (argDef.defaultValue) { + coercedValues[name] = coerceDefaultValue( + argDef.defaultValue, + argDef.type, + ); } else if (isNonNullType(argType)) { throw new GraphQLError( `Argument ${argDef} of required type ${argType} was not provided.`, @@ -189,8 +193,11 @@ export function getArgumentValues( variableValues == null || !Object.hasOwn(variableValues, variableName) ) { - if (argDef.defaultValue !== undefined) { - coercedValues[name] = argDef.defaultValue; + if (argDef.defaultValue) { + coercedValues[name] = coerceDefaultValue( + argDef.defaultValue, + argDef.type, + ); } else if (isNonNullType(argType)) { throw new GraphQLError( `Argument ${argDef} of required type ${argType} ` + diff --git a/src/index.ts b/src/index.ts index 985c336b06..0d3678ff81 100644 --- a/src/index.ts +++ b/src/index.ts @@ -200,6 +200,7 @@ export type { GraphQLScalarSerializer, GraphQLScalarValueParser, GraphQLScalarLiteralParser, + GraphQLDefaultValueUsage, } from './type/index.js'; // Parse and operate on GraphQL language source files. diff --git a/src/type/__tests__/definition-test.ts b/src/type/__tests__/definition-test.ts index e738a08818..ec6de3c259 100644 --- a/src/type/__tests__/definition-test.ts +++ b/src/type/__tests__/definition-test.ts @@ -4,6 +4,7 @@ import { describe, it } from 'mocha'; import { identityFunc } from '../../jsutils/identityFunc.js'; import { inspect } from '../../jsutils/inspect.js'; +import { Kind } from '../../language/kinds.js'; import { parseValue } from '../../language/parser.js'; import type { GraphQLNullableType, GraphQLType } from '../definition.js'; @@ -589,6 +590,65 @@ describe('Type System: Input Objects', () => { 'not used anymore', ); }); + + describe('Input Object fields may have default values', () => { + it('accepts an Input Object type with a default value', () => { + const inputObjType = new GraphQLInputObjectType({ + name: 'SomeInputObject', + fields: { + f: { type: ScalarType, defaultValue: 3 }, + }, + }); + expect(inputObjType.getFields().f).to.deep.include({ + coordinate: 'SomeInputObject.f', + name: 'f', + description: undefined, + type: ScalarType, + defaultValue: { value: 3 }, + deprecationReason: undefined, + extensions: {}, + astNode: undefined, + }); + }); + + it('accepts an Input Object type with a default value literal', () => { + const inputObjType = new GraphQLInputObjectType({ + name: 'SomeInputObject', + fields: { + f: { + type: ScalarType, + defaultValueLiteral: { kind: Kind.INT, value: '3' }, + }, + }, + }); + expect(inputObjType.getFields().f).to.deep.include({ + coordinate: 'SomeInputObject.f', + name: 'f', + description: undefined, + type: ScalarType, + defaultValue: { literal: { kind: 'IntValue', value: '3' } }, + deprecationReason: undefined, + extensions: {}, + astNode: undefined, + }); + }); + + it('rejects an Input Object type with potentially conflicting default values', () => { + const inputObjType = new GraphQLInputObjectType({ + name: 'SomeInputObject', + fields: { + f: { + type: ScalarType, + defaultValue: 3, + defaultValueLiteral: { kind: Kind.INT, value: '3' }, + }, + }, + }); + expect(() => inputObjType.getFields()).to.throw( + 'f has both a defaultValue and a defaultValueLiteral property, but only one must be provided.', + ); + }); + }); }); describe('Type System: List', () => { diff --git a/src/type/definition.ts b/src/type/definition.ts index 913df14e7c..aaa1073b25 100644 --- a/src/type/definition.ts +++ b/src/type/definition.ts @@ -16,6 +16,7 @@ import { toObjMap } from '../jsutils/toObjMap.js'; import { GraphQLError } from '../error/GraphQLError.js'; import type { + ConstValueNode, EnumTypeDefinitionNode, EnumTypeExtensionNode, EnumValueDefinitionNode, @@ -906,6 +907,7 @@ export interface GraphQLArgumentConfig { description?: Maybe; type: GraphQLInputType; defaultValue?: unknown; + defaultValueLiteral?: ConstValueNode | undefined; deprecationReason?: Maybe; extensions?: Maybe>; astNode?: Maybe; @@ -982,7 +984,7 @@ export class GraphQLArgument extends GraphQLSchemaElement { name: string; description: Maybe; type: GraphQLInputType; - defaultValue: unknown; + defaultValue: GraphQLDefaultValueUsage | undefined; deprecationReason: Maybe; extensions: Readonly; astNode: Maybe; @@ -997,7 +999,7 @@ export class GraphQLArgument extends GraphQLSchemaElement { this.name = assertName(name); this.description = config.description; this.type = config.type; - this.defaultValue = config.defaultValue; + this.defaultValue = defineDefaultValue(coordinate, config); this.deprecationReason = config.deprecationReason; this.extensions = toObjMap(config.extensions); this.astNode = config.astNode; @@ -1011,7 +1013,8 @@ export class GraphQLArgument extends GraphQLSchemaElement { return { description: this.description, type: this.type, - defaultValue: this.defaultValue, + defaultValue: this.defaultValue?.value, + defaultValueLiteral: this.defaultValue?.literal, deprecationReason: this.deprecationReason, extensions: this.extensions, astNode: this.astNode, @@ -1027,6 +1030,26 @@ export type GraphQLFieldMap = ObjMap< GraphQLField >; +export type GraphQLDefaultValueUsage = + | { value: unknown; literal?: never } + | { literal: ConstValueNode; value?: never }; + +function defineDefaultValue( + coordinate: string, + config: GraphQLArgumentConfig | GraphQLInputFieldConfig, +): GraphQLDefaultValueUsage | undefined { + if (config.defaultValue === undefined && !config.defaultValueLiteral) { + return; + } + devAssert( + !(config.defaultValue !== undefined && config.defaultValueLiteral), + `${coordinate} has both a defaultValue and a defaultValueLiteral property, but only one must be provided.`, + ); + return config.defaultValueLiteral + ? { literal: config.defaultValueLiteral } + : { value: config.defaultValue }; +} + /** * Custom extensions * @@ -1620,6 +1643,7 @@ export interface GraphQLInputFieldConfig { description?: Maybe; type: GraphQLInputType; defaultValue?: unknown; + defaultValueLiteral?: ConstValueNode | undefined; deprecationReason?: Maybe; extensions?: Maybe>; astNode?: Maybe; @@ -1631,7 +1655,7 @@ export class GraphQLInputField extends GraphQLSchemaElement { name: string; description: Maybe; type: GraphQLInputType; - defaultValue: unknown; + defaultValue: GraphQLDefaultValueUsage | undefined; deprecationReason: Maybe; extensions: Readonly; astNode: Maybe; @@ -1652,7 +1676,7 @@ export class GraphQLInputField extends GraphQLSchemaElement { this.name = assertName(name); this.description = config.description; this.type = config.type; - this.defaultValue = config.defaultValue; + this.defaultValue = defineDefaultValue(coordinate, config); this.deprecationReason = config.deprecationReason; this.extensions = toObjMap(config.extensions); this.astNode = config.astNode; @@ -1666,7 +1690,8 @@ export class GraphQLInputField extends GraphQLSchemaElement { return { description: this.description, type: this.type, - defaultValue: this.defaultValue, + defaultValue: this.defaultValue?.value, + defaultValueLiteral: this.defaultValue?.literal, deprecationReason: this.deprecationReason, extensions: this.extensions, astNode: this.astNode, diff --git a/src/type/index.ts b/src/type/index.ts index d2255995f2..681de56490 100644 --- a/src/type/index.ts +++ b/src/type/index.ts @@ -120,6 +120,7 @@ export type { GraphQLScalarSerializer, GraphQLScalarValueParser, GraphQLScalarLiteralParser, + GraphQLDefaultValueUsage, } from './definition.js'; export { diff --git a/src/type/introspection.ts b/src/type/introspection.ts index 8419025ed9..e498f72671 100644 --- a/src/type/introspection.ts +++ b/src/type/introspection.ts @@ -403,8 +403,13 @@ export const __InputValue: GraphQLObjectType = new GraphQLObjectType({ 'A GraphQL-formatted string representing the default value for this input value.', resolve(inputValue) { const { type, defaultValue } = inputValue; - const valueAST = astFromValue(defaultValue, type); - return valueAST ? print(valueAST) : null; + if (!defaultValue) { + return null; + } + const literal = + defaultValue.literal ?? astFromValue(defaultValue.value, type); + invariant(literal != null, 'Invalid default value'); + return print(literal); }, }, isDeprecated: { diff --git a/src/utilities/TypeInfo.ts b/src/utilities/TypeInfo.ts index ffcc964b4a..4742f67e66 100644 --- a/src/utilities/TypeInfo.ts +++ b/src/utilities/TypeInfo.ts @@ -9,6 +9,7 @@ import { getEnterLeaveForKind } from '../language/visitor.js'; import type { GraphQLArgument, GraphQLCompositeType, + GraphQLDefaultValueUsage, GraphQLEnumValue, GraphQLField, GraphQLInputField, @@ -43,7 +44,7 @@ export class TypeInfo { private _parentTypeStack: Array>; private _inputTypeStack: Array>; private _fieldDefStack: Array>>; - private _defaultValueStack: Array>; + private _defaultValueStack: Array; private _directive: Maybe; private _argument: Maybe; private _enumValue: Maybe; @@ -107,7 +108,7 @@ export class TypeInfo { return this._fieldDefStack.at(-1); } - getDefaultValue(): Maybe { + getDefaultValue(): GraphQLDefaultValueUsage | undefined { return this._defaultValueStack.at(-1); } diff --git a/src/utilities/__tests__/buildClientSchema-test.ts b/src/utilities/__tests__/buildClientSchema-test.ts index b65b8cfcde..8c4c1df6ce 100644 --- a/src/utilities/__tests__/buildClientSchema-test.ts +++ b/src/utilities/__tests__/buildClientSchema-test.ts @@ -445,6 +445,7 @@ describe('Type System: build schema from introspection', () => { } type Query { + defaultID(intArg: ID = "123"): String defaultInt(intArg: Int = 30): String defaultList(listArg: [Int] = [1, 2, 3]): String defaultObject(objArg: Geo = { lat: 37.485, lon: -122.148 }): String @@ -600,6 +601,28 @@ describe('Type System: build schema from introspection', () => { expect(result.data).to.deep.equal({ foo: 'bar' }); }); + it('can use client schema for execution if resolvers are added', () => { + const schema = buildSchema(` + type Query { + foo(bar: String = "abc"): String + } + `); + + const introspection = introspectionFromSchema(schema); + const clientSchema = buildClientSchema(introspection); + + const QueryType: GraphQLObjectType = clientSchema.getType('Query') as any; + QueryType.getFields().foo.resolve = (_value, args) => args.bar; + + const result = graphqlSync({ + schema: clientSchema, + source: '{ foo }', + }); + + expect(result.data).to.deep.equal({ foo: 'abc' }); + expect(result.data).to.deep.equal({ foo: 'abc' }); + }); + it('can build invalid schema', () => { const schema = buildSchema('type Query', { assumeValid: true }); diff --git a/src/utilities/__tests__/coerceInputValue-test.ts b/src/utilities/__tests__/coerceInputValue-test.ts index 11ed82cf23..bce0368689 100644 --- a/src/utilities/__tests__/coerceInputValue-test.ts +++ b/src/utilities/__tests__/coerceInputValue-test.ts @@ -5,6 +5,7 @@ import { identityFunc } from '../../jsutils/identityFunc.js'; import { invariant } from '../../jsutils/invariant.js'; import type { ObjMap } from '../../jsutils/ObjMap.js'; +import { Kind } from '../../language/kinds.js'; import { parseValue } from '../../language/parser.js'; import { print } from '../../language/printer.js'; @@ -24,7 +25,11 @@ import { GraphQLString, } from '../../type/scalars.js'; -import { coerceInputLiteral, coerceInputValue } from '../coerceInputValue.js'; +import { + coerceDefaultValue, + coerceInputLiteral, + coerceInputValue, +} from '../coerceInputValue.js'; interface CoerceResult { value: unknown; @@ -715,10 +720,14 @@ describe('coerceInputLiteral', () => { name: 'TestInput', fields: { int: { type: GraphQLInt, defaultValue: 42 }, + float: { + type: GraphQLFloat, + defaultValueLiteral: { kind: Kind.FLOAT, value: '3.14' }, + }, }, }); - test('{}', type, { int: 42 }); + test('{}', type, { int: 42, float: 3.14 }); }); const testInputObj = new GraphQLInputObjectType({ @@ -806,3 +815,26 @@ describe('coerceInputLiteral', () => { }); }); }); + +describe('coerceDefaultValue', () => { + it('memoizes coercion', () => { + const parseValueCalls: any = []; + + const spyScalar = new GraphQLScalarType({ + name: 'SpyScalar', + parseValue(value) { + parseValueCalls.push(value); + return value; + }, + }); + + const defaultValueUsage = { + literal: { kind: Kind.STRING, value: 'hello' }, + } as const; + expect(coerceDefaultValue(defaultValueUsage, spyScalar)).to.equal('hello'); + + // Call a second time + expect(coerceDefaultValue(defaultValueUsage, spyScalar)).to.equal('hello'); + expect(parseValueCalls).to.deep.equal(['hello']); + }); +}); diff --git a/src/utilities/buildClientSchema.ts b/src/utilities/buildClientSchema.ts index 5c6e55d67b..ca363b5cc1 100644 --- a/src/utilities/buildClientSchema.ts +++ b/src/utilities/buildClientSchema.ts @@ -32,7 +32,6 @@ import { specifiedScalarTypes } from '../type/scalars.js'; import type { GraphQLSchemaValidationOptions } from '../type/schema.js'; import { GraphQLSchema } from '../type/schema.js'; -import { coerceInputLiteral } from './coerceInputValue.js'; import type { IntrospectionDirective, IntrospectionEnumType, @@ -375,17 +374,13 @@ export function buildClientSchema( ); } - const defaultValue = - inputValueIntrospection.defaultValue != null - ? coerceInputLiteral( - parseConstValue(inputValueIntrospection.defaultValue), - type, - ) - : undefined; return { description: inputValueIntrospection.description, type, - defaultValue, + defaultValueLiteral: + inputValueIntrospection.defaultValue != null + ? parseConstValue(inputValueIntrospection.defaultValue) + : undefined, deprecationReason: inputValueIntrospection.deprecationReason, }; } diff --git a/src/utilities/coerceInputValue.ts b/src/utilities/coerceInputValue.ts index a5f32c942b..a484a2ed9a 100644 --- a/src/utilities/coerceInputValue.ts +++ b/src/utilities/coerceInputValue.ts @@ -15,7 +15,10 @@ import { GraphQLError } from '../error/GraphQLError.js'; import type { ValueNode } from '../language/ast.js'; import { Kind } from '../language/kinds.js'; -import type { GraphQLInputType } from '../type/definition.js'; +import type { + GraphQLDefaultValueUsage, + GraphQLInputType, +} from '../type/definition.js'; import { assertLeafType, isInputObjectType, @@ -109,8 +112,11 @@ function coerceInputValueImpl( const fieldValue = inputValue[field.name]; if (fieldValue === undefined) { - if (field.defaultValue !== undefined) { - coercedValue[field.name] = field.defaultValue; + if (field.defaultValue) { + coercedValue[field.name] = coerceDefaultValue( + field.defaultValue, + field.type, + ); } else if (isNonNullType(field.type)) { const typeStr = inspect(field.type); onError( @@ -297,8 +303,11 @@ export function coerceInputLiteral( if (isRequiredInputField(field)) { return; // Invalid: intentionally return no value. } - if (field.defaultValue !== undefined) { - coercedValue[field.name] = field.defaultValue; + if (field.defaultValue) { + coercedValue[field.name] = coerceDefaultValue( + field.defaultValue, + field.type, + ); } } else { const fieldValue = coerceInputLiteral( @@ -347,3 +356,23 @@ function isMissingVariable( (variables == null || !Object.hasOwn(variables, valueNode.name.value)) ); } + +/** + * @internal + */ +export function coerceDefaultValue( + defaultValue: GraphQLDefaultValueUsage, + type: GraphQLInputType, +): unknown { + // Memoize the result of coercing the default value in a hidden field. + let coercedValue = (defaultValue as any)._memoizedCoercedValue; + // istanbul ignore else (memoized case) + if (coercedValue === undefined) { + coercedValue = defaultValue.literal + ? coerceInputLiteral(defaultValue.literal, type) + : defaultValue.value; + invariant(coercedValue !== undefined); + (defaultValue as any)._memoizedCoercedValue = coercedValue; + } + return coercedValue; +} diff --git a/src/utilities/extendSchema.ts b/src/utilities/extendSchema.ts index d18b53d028..f43c15330d 100644 --- a/src/utilities/extendSchema.ts +++ b/src/utilities/extendSchema.ts @@ -83,8 +83,6 @@ import { assertValidSDLExtension } from '../validation/validate.js'; import { getDirectiveValues } from '../execution/values.js'; -import { coerceInputLiteral } from './coerceInputValue.js'; - interface Options extends GraphQLSchemaValidationOptions { /** * Set to true to assume the SDL is valid. @@ -535,9 +533,7 @@ export function extendSchemaImpl( argConfigMap[arg.name.value] = { type, description: arg.description?.value, - defaultValue: arg.defaultValue - ? coerceInputLiteral(arg.defaultValue, type) - : undefined, + defaultValueLiteral: arg.defaultValue, deprecationReason: getDeprecationReason(arg), astNode: arg, }; @@ -564,9 +560,7 @@ export function extendSchemaImpl( inputFieldMap[field.name.value] = { type, description: field.description?.value, - defaultValue: field.defaultValue - ? coerceInputLiteral(field.defaultValue, type) - : undefined, + defaultValueLiteral: field.defaultValue, deprecationReason: getDeprecationReason(field), astNode: field, }; diff --git a/src/utilities/findBreakingChanges.ts b/src/utilities/findBreakingChanges.ts index 6b69304629..c636cd85b4 100644 --- a/src/utilities/findBreakingChanges.ts +++ b/src/utilities/findBreakingChanges.ts @@ -5,6 +5,7 @@ import { keyMap } from '../jsutils/keyMap.js'; import { print } from '../language/printer.js'; import type { + GraphQLDefaultValueUsage, GraphQLEnumType, GraphQLField, GraphQLInputObjectType, @@ -525,8 +526,11 @@ function typeKindName(type: GraphQLNamedType): string { invariant(false, 'Unexpected type: ' + inspect(type)); } -function stringifyValue(value: unknown, type: GraphQLInputType): string { - const ast = astFromValue(value, type); +function stringifyValue( + defaultValue: GraphQLDefaultValueUsage, + type: GraphQLInputType, +): string { + const ast = defaultValue.literal ?? astFromValue(defaultValue.value, type); invariant(ast != null); return print(sortValueNode(ast)); } diff --git a/src/utilities/printSchema.ts b/src/utilities/printSchema.ts index c4caffc616..6294fdbe5e 100644 --- a/src/utilities/printSchema.ts +++ b/src/utilities/printSchema.ts @@ -261,10 +261,13 @@ function printArgs( } function printInputValue(arg: GraphQLInputField): string { - const defaultAST = astFromValue(arg.defaultValue, arg.type); let argDecl = arg.name + ': ' + String(arg.type); - if (defaultAST) { - argDecl += ` = ${print(defaultAST)}`; + if (arg.defaultValue) { + const literal = + arg.defaultValue.literal ?? + astFromValue(arg.defaultValue.value, arg.type); + invariant(literal != null, 'Invalid default value'); + argDecl += ` = ${print(literal)}`; } return argDecl + printDeprecated(arg.deprecationReason); } diff --git a/src/validation/ValidationContext.ts b/src/validation/ValidationContext.ts index b0c5524fa7..9550d1f187 100644 --- a/src/validation/ValidationContext.ts +++ b/src/validation/ValidationContext.ts @@ -18,6 +18,7 @@ import { visit } from '../language/visitor.js'; import type { GraphQLArgument, GraphQLCompositeType, + GraphQLDefaultValueUsage, GraphQLEnumValue, GraphQLField, GraphQLInputType, @@ -32,7 +33,7 @@ type NodeWithSelectionSet = OperationDefinitionNode | FragmentDefinitionNode; interface VariableUsage { readonly node: VariableNode; readonly type: Maybe; - readonly defaultValue: Maybe; + readonly defaultValue: GraphQLDefaultValueUsage | undefined; } /** diff --git a/src/validation/rules/VariablesInAllowedPositionRule.ts b/src/validation/rules/VariablesInAllowedPositionRule.ts index f324a3daa4..e865127a03 100644 --- a/src/validation/rules/VariablesInAllowedPositionRule.ts +++ b/src/validation/rules/VariablesInAllowedPositionRule.ts @@ -6,7 +6,10 @@ import type { ValueNode, VariableDefinitionNode } from '../../language/ast.js'; import { Kind } from '../../language/kinds.js'; import type { ASTVisitor } from '../../language/visitor.js'; -import type { GraphQLType } from '../../type/definition.js'; +import type { + GraphQLDefaultValueUsage, + GraphQLType, +} from '../../type/definition.js'; import { isNonNullType } from '../../type/definition.js'; import type { GraphQLSchema } from '../../type/schema.js'; @@ -83,7 +86,7 @@ function allowedVariableUsage( varType: GraphQLType, varDefaultValue: Maybe, locationType: GraphQLType, - locationDefaultValue: Maybe, + locationDefaultValue: GraphQLDefaultValueUsage | undefined, ): boolean { if (isNonNullType(locationType) && !isNonNullType(varType)) { const hasNonNullVariableDefaultValue =