@apollo/subgraph/dist/buildSubgraphSchema.js

Apollo Subgraph Utilities

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.buildFederatedSchema = exports.buildSubgraphSchema = void 0;
const util_1 = require("util");
const graphql_1 = require("graphql");
const schema_helper_1 = require("./schema-helper");
const federation_internals_1 = require("@apollo/federation-internals");
const types_1 = require("./types");
function buildSubgraphSchema(modulesOrSDL) {
    var _a;
    let shapedModulesOrSDL;
    if ('typeDefs' in modulesOrSDL) {
        const { typeDefs, resolvers } = modulesOrSDL;
        const augmentedTypeDefs = Array.isArray(typeDefs) ? typeDefs : [typeDefs];
        shapedModulesOrSDL = augmentedTypeDefs.map((typeDefs, i) => {
            const module = { typeDefs };
            if (i === 0 && resolvers)
                module.resolvers = resolvers;
            return module;
        });
    }
    else {
        shapedModulesOrSDL = modulesOrSDL;
    }
    const modules = (0, schema_helper_1.modulesFromSDL)(shapedModulesOrSDL);
    const documentAST = (0, graphql_1.concatAST)(modules.map(module => module.typeDefs));
    const subgraph = (0, federation_internals_1.buildSubgraph)(federation_internals_1.FEDERATION_UNNAMED_SUBGRAPH_NAME, '', documentAST, false);
    const sdl = (0, federation_internals_1.printSchema)(subgraph.schema);
    const schema = subgraph.schema.toGraphQLJSSchema();
    const queryRootName = (_a = subgraph.schema.schemaDefinition.rootType('query')) === null || _a === void 0 ? void 0 : _a.name;
    (0, federation_internals_1.assert)(queryRootName, 'A Query root type should have been added by `buildSubgraph`');
    (0, schema_helper_1.addResolversToSchema)(schema, {
        [queryRootName]: {
            _service: () => ({ sdl }),
        }
    });
    if (subgraph.metadata().entityType()) {
        (0, schema_helper_1.addResolversToSchema)(schema, {
            [queryRootName]: {
                _entities: (_source, { representations }, context, info) => (0, types_1.entitiesResolver)({ representations, context, info }),
            },
            _Entity: {
                __resolveType(parent) {
                    return parent.__typename;
                },
            }
        });
    }
    for (const module of modules) {
        if (!module.resolvers)
            continue;
        (0, schema_helper_1.addResolversToSchema)(schema, module.resolvers);
    }
    return schema;
}
exports.buildSubgraphSchema = buildSubgraphSchema;
exports.buildFederatedSchema = (0, util_1.deprecate)(buildSubgraphSchema, `'buildFederatedSchema' is deprecated. Use 'buildSubgraphSchema' instead.`);
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