@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
156 lines (154 loc) • 6.15 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.composeServices = composeServices;
exports.assertCompositionSuccess = assertCompositionSuccess;
exports.assertCompositionFailure = assertCompositionFailure;
exports.compositionHasErrors = compositionHasErrors;
const graphql_1 = require("graphql");
const printer_js_1 = require("./graphql/printer.js");
const transform_supergraph_to_public_schema_js_1 = require("./graphql/transform-supergraph-to-public-schema.js");
const authenticated_js_1 = require("./specifications/authenticated.js");
const cost_js_1 = require("./specifications/cost.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 policy_js_1 = require("./specifications/policy.js");
const requires_scopes_js_1 = require("./specifications/requires-scopes.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 usedCostSpec = validationResult.specs.cost;
const usedInaccessibleSpec = validationResult.specs.inaccessible;
const usedPolicySpec = validationResult.specs.policy;
const usedRequiresScopesSpec = validationResult.specs.requiresScopes;
const usedAuthenticatedSpec = validationResult.specs.authenticated;
let _publicSdl;
let costLinkImports = '';
if (usedCostSpec.used) {
const imports = [];
if (usedCostSpec.names.cost && usedCostSpec.names.cost !== 'cost') {
imports.push(createLinkImportValue('@cost', `@${usedCostSpec.names.cost}`));
}
if (usedCostSpec.names.listSize) {
imports.push(createLinkImportValue('@listSize', usedCostSpec.names.listSize !== 'listSize' ? `@${usedCostSpec.names.listSize}` : null));
}
if (imports.length) {
costLinkImports = `, import: [${imports.join(', ')}]`;
}
}
const federationVersionToJoinVersion = {
'v1.0': 'v0.3',
'v2.0': 'v0.3',
'v2.1': 'v0.3',
'v2.2': 'v0.3',
'v2.3': 'v0.3',
'v2.4': 'v0.3',
'v2.5': 'v0.3',
'v2.6': 'v0.3',
'v2.7': 'v0.4',
'v2.8': 'v0.5',
'v2.9': 'v0.5',
};
const core = `
schema
@link(url: "https://specs.apollo.dev/link/v1.0")
@link(url: "https://specs.apollo.dev/join/${federationVersionToJoinVersion[validationResult.federationVersion]}", for: EXECUTION)
${usedTagSpec ? '@link(url: "https://specs.apollo.dev/tag/v0.3")' : ''}
${usedCostSpec.used ? `@link(url: "https://specs.apollo.dev/cost/v0.1"${costLinkImports})` : ''}
${usedInaccessibleSpec
? '@link(url: "https://specs.apollo.dev/inaccessible/v0.2", for: SECURITY)'
: ''}
${usedPolicySpec ? '@link(url: "https://specs.apollo.dev/policy/v0.1", for: SECURITY)' : ''}
${usedRequiresScopesSpec
? '@link(url: "https://specs.apollo.dev/requiresScopes/v0.1", for: SECURITY)'
: ''}
${usedAuthenticatedSpec
? '@link(url: "https://specs.apollo.dev/authenticated/v0.1", for: SECURITY)'
: ''}
${validationResult.links.map(link_js_1.printLink).join('\n ')}
{
${rootTypes.query ? 'query: Query' : ''}
${rootTypes.mutation ? 'mutation: Mutation' : ''}
${rootTypes.subscription ? 'subscription: Subscription' : ''}
}
${(0, join_js_1.sdl)(validationResult.federationVersion)}
${link_js_1.sdl}
${usedTagSpec ? tag_js_1.sdl : ''}
${usedCostSpec.used
? (0, cost_js_1.sdl)({
cost: usedCostSpec.names.cost ?? 'cost',
listSize: usedCostSpec.names.listSize ?? 'listSize',
})
: ''}
${usedInaccessibleSpec ? inaccessible_js_1.sdl : ''}
${usedPolicySpec ? policy_js_1.sdl : ''}
${usedRequiresScopesSpec ? requires_scopes_js_1.sdl : ''}
${usedAuthenticatedSpec ? authenticated_js_1.sdl : ''}
`;
return {
supergraphSdl: `
${core}
${(0, printer_js_1.print)({
kind: graphql_1.Kind.DOCUMENT,
definitions: validationResult.supergraph,
})}
`,
get publicSdl() {
if (_publicSdl) {
return _publicSdl;
}
_publicSdl = (0, printer_js_1.print)((0, transform_supergraph_to_public_schema_js_1.transformSupergraphToPublicSchema)({
kind: graphql_1.Kind.DOCUMENT,
definitions: (0, graphql_1.parse)(core).definitions.concat(validationResult.supergraph),
}));
return _publicSdl;
},
};
}
function createLinkImportValue(name, alias) {
if (alias) {
return `{ name: "${name}", as: "${alias}" }`;
}
return `"${name}"`;
}
function assertCompositionSuccess(compositionResult, message) {
if (compositionHasErrors(compositionResult)) {
throw new Error(message || 'Unexpected test failure');
}
}
function assertCompositionFailure(compositionResult, message) {
if (!compositionHasErrors(compositionResult)) {
throw new Error(message || 'Unexpected test failure');
}
}
function compositionHasErrors(compositionResult) {
return 'errors' in compositionResult && !!compositionResult.errors;
}