@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
158 lines (156 loc) • 6.18 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;
}