@paulxuca/graphql-yoga
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Fully-featured GraphQL Server with focus on easy setup, performance & great developer experience
421 lines • 20 kB
JavaScript
"use strict";
var __assign = (this && this.__assign) || function () {
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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}
return t;
};
return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
});
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var __generator = (this && this.__generator) || function (thisArg, body) {
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function verb(n) { return function (v) { return step([n, v]); }; }
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}
};
Object.defineProperty(exports, "__esModule", { value: true });
var expressApollo_1 = require("apollo-server-express/dist/expressApollo");
var graphql_upload_1 = require("graphql-upload");
var bodyParser = require("body-parser-graphql");
var cors = require("cors");
var express = require("express");
var fs = require("fs");
var graphql_1 = require("graphql");
var graphql_import_1 = require("graphql-import");
var graphql_deduplicator_1 = require("graphql-deduplicator");
var graphql_playground_middleware_express_1 = require("graphql-playground-middleware-express");
var graphql_tools_1 = require("graphql-tools");
var graphql_middleware_1 = require("graphql-middleware");
var http_1 = require("http");
var https_1 = require("https");
var path = require("path");
var subscriptions_transport_ws_1 = require("subscriptions-transport-ws");
var defaultErrorFormatter_1 = require("./defaultErrorFormatter");
var executor_1 = require("./executor");
var graphql_tools_2 = require("graphql-tools");
exports.MockList = graphql_tools_2.MockList;
var graphql_subscriptions_1 = require("graphql-subscriptions");
exports.PubSub = graphql_subscriptions_1.PubSub;
exports.withFilter = graphql_subscriptions_1.withFilter;
var GraphQLServer = /** @class */ (function () {
function GraphQLServer(props) {
this.subscriptionServerOptions = null;
this.options = {
tracing: { mode: 'http-header' },
port: process.env.PORT || 4000,
deduplicator: true,
endpoint: '/',
subscriptions: '/',
playground: '/',
};
this.middlewareFragmentReplacements = [];
this.middlewares = { use: [], get: [], post: [] };
this.express = express();
this.subscriptionServer = null;
this.context = props.context;
if (props.schema) {
this.executableSchema = props.schema;
if (props.graphqlJitExecutor) {
this.executor = executor_1.executor(this.executableSchema);
}
}
else if (props.typeDefs && props.resolvers) {
var directiveResolvers = props.directiveResolvers, schemaDirectives = props.schemaDirectives, resolvers = props.resolvers, resolverValidationOptions = props.resolverValidationOptions, typeDefs = props.typeDefs, mocks = props.mocks;
var typeDefsString = mergeTypeDefs(typeDefs);
var uploadMixin = typeDefsString.includes('scalar Upload')
? { Upload: graphql_upload_1.GraphQLUpload }
: {};
this.executableSchema = graphql_tools_1.makeExecutableSchema({
directiveResolvers: directiveResolvers,
schemaDirectives: schemaDirectives,
typeDefs: typeDefsString,
resolvers: Array.isArray(resolvers)
? [uploadMixin].concat(resolvers) : [uploadMixin, resolvers],
resolverValidationOptions: resolverValidationOptions,
});
if (props.graphqlJitExecutor) {
this.executor = executor_1.executor(this.executableSchema);
}
if (mocks) {
graphql_tools_1.addMockFunctionsToSchema({
schema: this.executableSchema,
mocks: typeof mocks === 'object' ? mocks : undefined,
preserveResolvers: false,
});
}
}
if (props.middlewares) {
var _a = graphql_middleware_1.applyMiddleware.apply(void 0, [this.executableSchema].concat(props.middlewares)), schema = _a.schema, fragmentReplacements = _a.fragmentReplacements;
this.executableSchema = schema;
this.middlewareFragmentReplacements = fragmentReplacements;
}
}
GraphQLServer.prototype.use = function (path) {
var handlers = [];
for (var _i = 1; _i < arguments.length; _i++) {
handlers[_i - 1] = arguments[_i];
}
this.middlewares.use.push({ path: path, handlers: handlers });
return this;
};
GraphQLServer.prototype.get = function (path) {
var handlers = [];
for (var _i = 1; _i < arguments.length; _i++) {
handlers[_i - 1] = arguments[_i];
}
this.middlewares.get.push({ path: path, handlers: handlers });
return this;
};
GraphQLServer.prototype.post = function (path) {
var handlers = [];
for (var _i = 1; _i < arguments.length; _i++) {
handlers[_i - 1] = arguments[_i];
}
this.middlewares.post.push({ path: path, handlers: handlers });
return this;
};
GraphQLServer.prototype.createHttpServer = function (options) {
var _this = this;
var app = this.express;
this.options = __assign({}, this.options, options);
if (this.options.subscriptions) {
this.subscriptionServerOptions =
typeof this.options.subscriptions === 'string'
? { path: this.options.subscriptions }
: __assign({ path: '/' }, this.options.subscriptions);
}
var tracing = function (req) {
var t = _this.options.tracing;
if (typeof t === 'boolean') {
return t;
}
else if (t.mode === 'http-header') {
// @ts-ignore
return !!req.headers['x-apollo-tracing'];
}
else {
return t.mode === 'enabled';
}
};
// @ts-ignore
var formatResponse = function (req) {
if (!_this.options.deduplicator) {
return _this.options.formatResponse;
}
return function (response) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
var _a;
if (
// @ts-ignore
!!req.headers['x-graphql-deduplicate'] &&
response.data &&
!response.data.__schema) {
response.data = graphql_deduplicator_1.deflate(response.data);
}
return _this.options.formatResponse
? (_a = _this.options).formatResponse.apply(_a, [response].concat(args)) : response;
};
};
// CORS support
if (this.options.cors) {
app.use(cors(this.options.cors));
}
else if (this.options.cors !== false) {
app.use(cors());
}
app.post(this.options.endpoint,
// @ts-ignore
bodyParser.graphql(this.options.bodyParserOptions));
if (this.options.uploads) {
app.post(this.options.endpoint, graphql_upload_1.graphqlUploadExpress(this.options.uploads));
}
else if (this.options.uploads !== false) {
app.post(this.options.endpoint, graphql_upload_1.graphqlUploadExpress());
}
// All middlewares added before start() was called are applied to
// the express application here, in the order they were provided
// (following Queue pattern)
while (this.middlewares.use.length > 0) {
var middleware = this.middlewares.use.shift();
if (middleware.path) {
// @ts-ignore
app.use.apply(app, [middleware.path].concat(middleware.handlers));
}
else {
// @ts-ignore
app.use.apply(app, middleware.handlers);
}
}
while (this.middlewares.get.length > 0) {
var middleware = this.middlewares.get.shift();
if (middleware.path) {
// @ts-ignore
app.get.apply(app, [middleware.path].concat(middleware.handlers));
}
}
while (this.middlewares.post.length > 0) {
var middleware = this.middlewares.post.shift();
if (middleware.path) {
// @ts-ignore
app.post.apply(app, [middleware.path].concat(middleware.handlers));
}
}
app.post(this.options.endpoint, expressApollo_1.graphqlExpress(function (request, response) {
return new Promise(function (resolve, reject) { return __awaiter(_this, void 0, void 0, function () {
var context, _a, e_1, formatErrorHandler, formatError;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
_b.trys.push([0, 4, , 5]);
if (!(typeof this.context === 'function')) return [3 /*break*/, 2];
return [4 /*yield*/, this.context({
request: request,
response: response,
fragmentReplacements: this.middlewareFragmentReplacements,
})];
case 1:
_a = _b.sent();
return [3 /*break*/, 3];
case 2:
_a = this.context;
_b.label = 3;
case 3:
context = _a;
return [3 /*break*/, 5];
case 4:
e_1 = _b.sent();
console.error(e_1);
throw e_1;
case 5:
formatErrorHandler = this.options.formatError || defaultErrorFormatter_1.defaultErrorFormatter;
formatError = function (error) {
return formatErrorHandler(error, context);
};
return [2 /*return*/, resolve({
schema: this.executableSchema,
tracing: tracing(request),
cacheControl: this.options.cacheControl,
formatError: formatError,
// @ts-ignore
logFunction: this.options.logFunction,
rootValue: this.options.rootValue,
validationRules: typeof this.options.validationRules === 'function'
? this.options.validationRules(request, response)
: this.options.validationRules,
fieldResolver: this.options.fieldResolver || graphql_tools_1.defaultMergedResolver,
// @ts-ignore
formatParams: this.options.formatParams,
formatResponse: formatResponse(request),
debug: this.options.debug,
context: context,
executor: this.executor,
})];
}
});
}); });
}));
if (this.options.playground) {
var playgroundOptions = {
endpoint: this.options.endpoint,
subscriptionsEndpoint: this.subscriptionServerOptions
? this.subscriptionServerOptions.path
: undefined,
tabs: this.options.defaultPlaygroundQuery
? [
{
endpoint: this.options.endpoint,
query: this.options.defaultPlaygroundQuery,
},
]
: undefined,
};
app.get(this.options.playground, graphql_playground_middleware_express_1.default(playgroundOptions));
}
if (!this.executableSchema) {
throw new Error('No schema defined');
}
var server = this.options.https
? https_1.createServer(this.options.https, app)
: http_1.createServer(app);
if (this.subscriptionServerOptions) {
this.createSubscriptionServer(server);
}
return server;
};
GraphQLServer.prototype.start = function (optionsOrCallback, callback) {
var _this = this;
var options = optionsOrCallback && typeof optionsOrCallback === 'function'
? {}
: optionsOrCallback;
var callbackFunc = callback
? callback
: optionsOrCallback && typeof optionsOrCallback === 'function'
? optionsOrCallback
: function () { return null; };
var server = this.createHttpServer(options);
return new Promise(function (resolve, reject) {
var combinedServer = server;
combinedServer.listen(_this.options.port, function () {
callbackFunc(__assign({}, _this.options, { port: combinedServer.address().port }));
resolve(combinedServer);
});
});
};
GraphQLServer.prototype.createSubscriptionServer = function (combinedServer) {
var _this = this;
this.subscriptionServer = subscriptions_transport_ws_1.SubscriptionServer.create({
schema: this.executableSchema,
// TODO remove once `@types/graphql` is fixed for `execute`
execute: graphql_1.execute,
subscribe: graphql_1.subscribe,
onConnect: this.subscriptionServerOptions.onConnect
? this.subscriptionServerOptions.onConnect
: function (connectionParams, webSocket) { return __awaiter(_this, void 0, void 0, function () { return __generator(this, function (_a) {
return [2 /*return*/, (__assign({}, connectionParams))];
}); }); },
onDisconnect: this.subscriptionServerOptions.onDisconnect,
onOperation: function (message, connection, webSocket) { return __awaiter(_this, void 0, void 0, function () {
var context, _a, e_2;
var _this = this;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
// The following should be replaced when SubscriptionServer accepts a formatError
// parameter for custom error formatting.
// See https://github.com/apollographql/subscriptions-transport-ws/issues/182
connection.formatResponse = function (value) { return (__assign({}, value, { errors: value.errors &&
value.errors.map(_this.options.formatError || defaultErrorFormatter_1.defaultErrorFormatter) })); };
_b.label = 1;
case 1:
_b.trys.push([1, 5, , 6]);
if (!(typeof this.context === 'function')) return [3 /*break*/, 3];
return [4 /*yield*/, this.context({ connection: connection })];
case 2:
_a = _b.sent();
return [3 /*break*/, 4];
case 3:
_a = this.context;
_b.label = 4;
case 4:
context = _a;
return [3 /*break*/, 6];
case 5:
e_2 = _b.sent();
console.error(e_2);
throw e_2;
case 6: return [2 /*return*/, __assign({}, connection, { context: context })];
}
});
}); },
keepAlive: this.subscriptionServerOptions.keepAlive,
}, {
server: combinedServer,
path: this.subscriptionServerOptions.path,
});
};
return GraphQLServer;
}());
exports.GraphQLServer = GraphQLServer;
function mergeTypeDefs(typeDefs) {
if (typeof typeDefs === 'string') {
if (typeDefs.endsWith('graphql')) {
var schemaPath = path.resolve(typeDefs);
if (!fs.existsSync(schemaPath)) {
throw new Error("No schema found for path: " + schemaPath);
}
return graphql_import_1.importSchema(schemaPath);
}
else {
return typeDefs;
}
}
if (typeof typeDefs === 'function') {
typeDefs = typeDefs();
}
if (isDocumentNode(typeDefs)) {
return graphql_1.print(typeDefs);
}
if (Array.isArray(typeDefs)) {
return typeDefs.reduce(function (acc, t) { return acc + '\n' + mergeTypeDefs(t); }, '');
}
throw new Error('Typedef is not string, function, DocumentNode or array of previous');
}
function isDocumentNode(node) {
return node.kind === 'Document';
}
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