@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
60 lines (59 loc) • 2.69 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ExternalRules = ExternalRules;
const graphql_1 = require("graphql");
const printer_js_1 = require("../../../../graphql/printer.js");
const helpers_js_1 = require("../../../helpers.js");
function ExternalRules(context) {
return {
DirectiveDefinition(node) {
(0, helpers_js_1.validateDirectiveAgainstOriginal)(node, "external", context);
},
Directive(node) {
if (!context.isAvailableFederationDirective("external", node)) {
return;
}
const typeDef = context.typeNodeInfo.getTypeDef();
const fieldDef = context.typeNodeInfo.getFieldDef();
if (!typeDef ||
!(typeDef.kind === graphql_1.Kind.OBJECT_TYPE_DEFINITION ||
typeDef.kind === graphql_1.Kind.OBJECT_TYPE_EXTENSION)) {
return;
}
const fieldDefinitions = [];
if (fieldDef) {
if (fieldDef.kind !== graphql_1.Kind.FIELD_DEFINITION) {
return;
}
fieldDefinitions.push(fieldDef);
}
else {
const fields = typeDef.fields;
if (fields) {
if (context.satisfiesVersionRange(">= v2.0")) {
fieldDefinitions.push(...fields);
}
}
}
for (const field of fieldDefinitions) {
context.markAsExternal(`${typeDef.name.value}.${field.name.value}`);
const conflictingDirectives = field.directives?.filter((directive) => context.isAvailableFederationDirective("tag", directive) ||
context.isAvailableFederationDirective("inaccessible", directive));
if (conflictingDirectives?.length &&
context.satisfiesVersionRange(">= v2.0")) {
for (const directive of conflictingDirectives) {
context.reportError(new graphql_1.GraphQLError(`Cannot apply merged directive ${(0, printer_js_1.print)(directive).trim()} to external field "${typeDef.name.value}.${field.name.value}"`, {
nodes: node,
extensions: {
code: "MERGED_DIRECTIVE_APPLICATION_ON_EXTERNAL",
},
}));
}
}
else {
context.stateBuilder.objectType.field.setExternal(typeDef.name.value, field.name.value);
}
}
},
};
}