260 lines
11 KiB
JavaScript
260 lines
11 KiB
JavaScript
"use strict";
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var __assign = (this && this.__assign) || function () {
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__assign = Object.assign || function(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
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t[p] = s[p];
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (g && (g = 0, op[0] && (_ = 0)), _) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
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if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
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if (ar || !(i in from)) {
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if (!ar) ar = Array.prototype.slice.call(from, 0, i);
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ar[i] = from[i];
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}
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}
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return to.concat(ar || Array.prototype.slice.call(from));
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.JSONRPCServer = void 0;
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var models_1 = require("./models");
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var internal_1 = require("./internal");
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var createParseErrorResponse = function () {
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return (0, models_1.createJSONRPCErrorResponse)(null, models_1.JSONRPCErrorCode.ParseError, "Parse error");
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};
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var createInvalidRequestResponse = function (request) {
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return (0, models_1.createJSONRPCErrorResponse)((0, models_1.isJSONRPCID)(request.id) ? request.id : null, models_1.JSONRPCErrorCode.InvalidRequest, "Invalid Request");
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};
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var createMethodNotFoundResponse = function (id) {
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return (0, models_1.createJSONRPCErrorResponse)(id, models_1.JSONRPCErrorCode.MethodNotFound, "Method not found");
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};
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var JSONRPCServer = /** @class */ (function () {
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function JSONRPCServer(options) {
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if (options === void 0) { options = {}; }
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var _a;
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this.mapErrorToJSONRPCErrorResponse = defaultMapErrorToJSONRPCErrorResponse;
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this.nameToMethodDictionary = {};
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this.middleware = null;
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this.errorListener = (_a = options.errorListener) !== null && _a !== void 0 ? _a : console.warn;
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}
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JSONRPCServer.prototype.hasMethod = function (name) {
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return !!this.nameToMethodDictionary[name];
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};
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JSONRPCServer.prototype.addMethod = function (name, method) {
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this.addMethodAdvanced(name, this.toJSONRPCMethod(method));
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};
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JSONRPCServer.prototype.removeMethod = function (name) {
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delete this.nameToMethodDictionary[name];
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};
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JSONRPCServer.prototype.toJSONRPCMethod = function (method) {
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return function (request, serverParams) {
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var response = method(request.params, serverParams);
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return Promise.resolve(response).then(function (result) {
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return mapResultToJSONRPCResponse(request.id, result);
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});
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};
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};
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JSONRPCServer.prototype.addMethodAdvanced = function (name, method) {
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var _a;
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this.nameToMethodDictionary = __assign(__assign({}, this.nameToMethodDictionary), (_a = {}, _a[name] = method, _a));
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};
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JSONRPCServer.prototype.receiveJSON = function (json, serverParams) {
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var request = this.tryParseRequestJSON(json);
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if (request) {
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return this.receive(request, serverParams);
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}
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else {
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return Promise.resolve(createParseErrorResponse());
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}
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};
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JSONRPCServer.prototype.tryParseRequestJSON = function (json) {
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try {
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return JSON.parse(json);
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}
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catch (_a) {
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return null;
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}
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};
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JSONRPCServer.prototype.receive = function (request, serverParams) {
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if (Array.isArray(request)) {
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return this.receiveMultiple(request, serverParams);
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}
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else {
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return this.receiveSingle(request, serverParams);
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}
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};
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JSONRPCServer.prototype.receiveMultiple = function (requests, serverParams) {
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return __awaiter(this, void 0, void 0, function () {
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var responses;
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var _this = this;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0: return [4 /*yield*/, Promise.all(requests.map(function (request) { return _this.receiveSingle(request, serverParams); }))];
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case 1:
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responses = (_a.sent()).filter(isNonNull);
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if (responses.length === 1) {
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return [2 /*return*/, responses[0]];
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}
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else if (responses.length) {
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return [2 /*return*/, responses];
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}
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else {
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return [2 /*return*/, null];
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}
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return [2 /*return*/];
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}
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});
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});
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};
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JSONRPCServer.prototype.receiveSingle = function (request, serverParams) {
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return __awaiter(this, void 0, void 0, function () {
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var method, response;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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method = this.nameToMethodDictionary[request.method];
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if (!!(0, models_1.isJSONRPCRequest)(request)) return [3 /*break*/, 1];
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return [2 /*return*/, createInvalidRequestResponse(request)];
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case 1: return [4 /*yield*/, this.callMethod(method, request, serverParams)];
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case 2:
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response = _a.sent();
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return [2 /*return*/, mapResponse(request, response)];
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}
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});
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});
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};
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JSONRPCServer.prototype.applyMiddleware = function () {
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var middlewares = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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middlewares[_i] = arguments[_i];
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}
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if (this.middleware) {
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this.middleware = this.combineMiddlewares(__spreadArray([
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this.middleware
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], middlewares, true));
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}
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else {
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this.middleware = this.combineMiddlewares(middlewares);
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}
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};
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JSONRPCServer.prototype.combineMiddlewares = function (middlewares) {
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if (!middlewares.length) {
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return null;
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}
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else {
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return middlewares.reduce(this.middlewareReducer);
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}
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};
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JSONRPCServer.prototype.middlewareReducer = function (prevMiddleware, nextMiddleware) {
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return function (next, request, serverParams) {
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return prevMiddleware(function (request, serverParams) { return nextMiddleware(next, request, serverParams); }, request, serverParams);
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};
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};
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JSONRPCServer.prototype.callMethod = function (method, request, serverParams) {
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var _this = this;
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var callMethod = function (request, serverParams) {
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if (method) {
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return method(request, serverParams);
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}
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else if (request.id !== undefined) {
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return Promise.resolve(createMethodNotFoundResponse(request.id));
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}
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else {
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return Promise.resolve(null);
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}
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};
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var onError = function (error) {
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_this.errorListener("An unexpected error occurred while executing \"".concat(request.method, "\" JSON-RPC method:"), error);
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return Promise.resolve(_this.mapErrorToJSONRPCErrorResponseIfNecessary(request.id, error));
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};
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try {
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return (this.middleware || noopMiddleware)(callMethod, request, serverParams).then(undefined, onError);
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}
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catch (error) {
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return onError(error);
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}
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};
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JSONRPCServer.prototype.mapErrorToJSONRPCErrorResponseIfNecessary = function (id, error) {
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if (id !== undefined) {
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return this.mapErrorToJSONRPCErrorResponse(id, error);
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}
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else {
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return null;
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}
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};
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return JSONRPCServer;
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}());
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exports.JSONRPCServer = JSONRPCServer;
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var isNonNull = function (value) { return value !== null; };
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var noopMiddleware = function (next, request, serverParams) { return next(request, serverParams); };
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var mapResultToJSONRPCResponse = function (id, result) {
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if (id !== undefined) {
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return (0, models_1.createJSONRPCSuccessResponse)(id, result);
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}
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else {
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return null;
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}
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};
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var defaultMapErrorToJSONRPCErrorResponse = function (id, error) {
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var _a;
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var message = (_a = error === null || error === void 0 ? void 0 : error.message) !== null && _a !== void 0 ? _a : "An unexpected error occurred";
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var code = internal_1.DefaultErrorCode;
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var data;
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if (error instanceof models_1.JSONRPCErrorException) {
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code = error.code;
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data = error.data;
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}
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return (0, models_1.createJSONRPCErrorResponse)(id, code, message, data);
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};
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var mapResponse = function (request, response) {
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if (response) {
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return response;
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}
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else if (request.id !== undefined) {
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return (0, models_1.createJSONRPCErrorResponse)(request.id, models_1.JSONRPCErrorCode.InternalError, "Internal error");
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}
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else {
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return null;
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}
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};
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