@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
81 lines (80 loc) • 3.93 kB
JavaScript
import { Kind } from 'graphql';
import { print } from '../../../../graphql/printer.js';
import { validateDirectiveAgainstOriginal } from '../../../helpers.js';
export function RequiresScopesRule(context) {
return {
DirectiveDefinition(node) {
validateDirectiveAgainstOriginal(node, 'requiresScopes', context);
},
Directive(node, _key, _parent, paths, ancestors) {
if (!context.isAvailableFederationDirective('requiresScopes', node)) {
return;
}
const scopesArg = node.arguments?.find(arg => arg.name.value === 'scopes');
if (!scopesArg) {
throw new Error('Expected @requiresScopes to have a "scopes" argument');
}
if (scopesArg.value.kind !== Kind.LIST) {
throw new Error('Expected "@requiresScopes(scopes:)" to be a list');
}
const scopes = [];
for (const scopesValues of scopesArg.value.values) {
if (scopesValues.kind !== Kind.LIST) {
throw new Error('Expected "@requiresScopes(scopes:)" to be in [[requiresScopes__Scope!]!]! format');
}
const scopesOR = [];
for (const scope of scopesValues.values) {
if (scope.kind !== Kind.STRING) {
throw new Error(`Expected "@requiresScopes(scopes:)" to be in [[requiresScopes__Scope!]!]! format, received [[${print(scopesArg.value)}]!]!`);
}
scopesOR.push(scope.value);
}
scopes.push(scopesOR);
}
context.stateBuilder.markSpecAsUsed('requiresScopes');
const directivesKeyAt = paths.findIndex(path => path === 'directives');
if (directivesKeyAt === -1) {
throw new Error('Could not find "directives" key in ancestors');
}
const parent = ancestors[directivesKeyAt];
if (!parent) {
throw new Error('Could not find the node annotated with @requiresScopes');
}
if (Array.isArray(parent)) {
throw new Error('Expected parent to be a single node');
}
if (!('kind' in parent)) {
throw new Error('Expected parent to be a node');
}
switch (parent.kind) {
case Kind.FIELD_DEFINITION: {
const typeDef = context.typeNodeInfo.getTypeDef();
if (!typeDef) {
throw new Error('Could not find the parent type of the field annotated with @requiresScopes');
}
if (typeDef.kind === Kind.OBJECT_TYPE_DEFINITION ||
typeDef.kind === Kind.OBJECT_TYPE_EXTENSION) {
context.stateBuilder.objectType.field.setScopes(typeDef.name.value, parent.name.value, scopes);
}
break;
}
case Kind.OBJECT_TYPE_DEFINITION:
case Kind.OBJECT_TYPE_EXTENSION:
context.stateBuilder.objectType.setScopes(parent.name.value, scopes);
break;
case Kind.INTERFACE_TYPE_DEFINITION:
case Kind.INTERFACE_TYPE_DEFINITION:
context.stateBuilder.interfaceType.setScopes(parent.name.value, scopes);
break;
case Kind.SCALAR_TYPE_DEFINITION:
case Kind.SCALAR_TYPE_EXTENSION:
context.stateBuilder.scalarType.setScopes(parent.name.value, scopes);
break;
case Kind.ENUM_TYPE_DEFINITION:
case Kind.ENUM_TYPE_EXTENSION:
context.stateBuilder.enumType.setScopes(parent.name.value, scopes);
break;
}
},
};
}