@theguild/federation-composition/cjs/compose.js

Open Source Composition library for Apollo Federation

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.compositionHasErrors = exports.assertCompositionFailure = exports.assertCompositionSuccess = exports.composeServices = void 0;
const graphql_1 = require("graphql");
const printer_js_1 = require("./graphql/printer.js");
const inaccessible_js_1 = require("./specifications/inaccessible.js");
const join_js_1 = require("./specifications/join.js");
const link_js_1 = require("./specifications/link.js");
const tag_js_1 = require("./specifications/tag.js");
const validate_js_1 = require("./validate.js");
function composeServices(services, __internal) {
    const validationResult = (0, validate_js_1.validate)(services, __internal);
    if (!validationResult.success) {
        return {
            errors: validationResult.errors,
        };
    }
    const rootTypes = {
        query: false,
        mutation: false,
        subscription: false,
    };
    for (const def of validationResult.supergraph) {
        if (def.name.value === 'Query') {
            rootTypes.query = true;
        }
        else if (def.name.value === 'Mutation') {
            rootTypes.mutation = true;
        }
        else if (def.name.value === 'Subscription') {
            rootTypes.subscription = true;
        }
        if (rootTypes.query === true &&
            rootTypes.mutation === true &&
            rootTypes.subscription === true) {
            break;
        }
    }
    const usedTagSpec = validationResult.specs.tag;
    const usedInaccessibleSpec = validationResult.specs.inaccessible;
    return {
        supergraphSdl: `
schema
  @link(url: "https://specs.apollo.dev/link/v1.0")
  @link(url: "https://specs.apollo.dev/join/v0.3", for: EXECUTION)
  ${usedTagSpec ? '@link(url: "https://specs.apollo.dev/tag/v0.3")' : ''}
  ${usedInaccessibleSpec
            ? '@link(url: "https://specs.apollo.dev/inaccessible/v0.2", for: SECURITY)'
            : ''}
  ${validationResult.links.map(link_js_1.printLink).join('\n  ')}
{
  ${rootTypes.query ? 'query: Query' : ''}
  ${rootTypes.mutation ? 'mutation: Mutation' : ''}
  ${rootTypes.subscription ? 'subscription: Subscription' : ''}
}

${join_js_1.sdl}
${link_js_1.sdl}
${usedTagSpec ? tag_js_1.sdl : ''}
${usedInaccessibleSpec ? inaccessible_js_1.sdl : ''}

${(0, printer_js_1.print)({
            kind: graphql_1.Kind.DOCUMENT,
            definitions: validationResult.supergraph,
        })}
    `,
    };
}
exports.composeServices = composeServices;
function assertCompositionSuccess(compositionResult, message) {
    if (compositionHasErrors(compositionResult)) {
        throw new Error(message || 'Unexpected test failure');
    }
}
exports.assertCompositionSuccess = assertCompositionSuccess;
function assertCompositionFailure(compositionResult, message) {
    if (!compositionHasErrors(compositionResult)) {
        throw new Error(message || 'Unexpected test failure');
    }
}
exports.assertCompositionFailure = assertCompositionFailure;
function compositionHasErrors(compositionResult) {
    return 'errors' in compositionResult && !!compositionResult.errors;
}
exports.compositionHasErrors = compositionHasErrors;