json-rpc-utils
Version:
JSON-RPC 2.0 client and server utilities
125 lines (124 loc) • 6.72 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
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;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.JSONRPCClient = void 0;
var models_1 = require("./models");
var JSONRPCClient = /** @class */ (function () {
function JSONRPCClient(_send, createID) {
this._send = _send;
this.createID = createID;
this.id = 0;
}
/**
* Invoke a remote procedure using JSON-RPC and return the result. Throws a `JSONRPCRemoteError` if the transport between the client and server was successful but the server failed to execute. Doesn't wrap or rethrow any errors thrown by the request sender function passed to this `JSONRPCClient` object.
*
* @param method The name of the method to invoke
* @param params The parameters (arguments) to send to the remote method
* @param context An optional context object to pass into the send function passed to this JSONRPCClient object
* @returns The result of invoking the remote method, the shape of which is defined by the server
*/
JSONRPCClient.prototype.request = function (method, params, context) {
return __awaiter(this, void 0, void 0, function () {
var request, response;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
request = {
jsonrpc: models_1.JSONRPCProtocol,
method: method,
params: params,
id: this._createID(),
};
return [4 /*yield*/, this.send(request, context)];
case 1:
response = _a.sent();
if (!response) {
throw new Error("JSONRPCClient internal error: No response returned from send function passed to constructor.");
}
if (response.result !== undefined && !response.error) {
return [2 /*return*/, response.result];
}
else if (response.result === undefined && response.error) {
throw new models_1.JSONRPCRemoteError(response.error.message, response.error.code, response, response.error.data);
}
else {
// this should never happen: we shouldn't get back a defined result with an error, or an undefined result and undefined error.
throw new Error("JSONRPCClient internal error: An unexpected error occurred, result/error response didn't make sense");
}
return [2 /*return*/];
}
});
});
};
/**
* Fire and forget a remote procedure invocation using JSON-RPC. Doesn't return a result, and doesn't check to see if the remote execution was successful.
*
* @param method The name of the method to invoke
* @param params The parameters (arguments) to send to the remote method
* @param context An optional context object to pass into the send function passed to this JSONRPCClient object
*/
JSONRPCClient.prototype.notify = function (method, params, context) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.send({
jsonrpc: models_1.JSONRPCProtocol,
method: method,
params: params,
}, context)];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
JSONRPCClient.prototype.send = function (payload, context) {
return this._send(payload, context);
};
JSONRPCClient.prototype._createID = function () {
if (this.createID) {
return this.createID();
}
else {
return ++this.id;
}
};
return JSONRPCClient;
}());
exports.JSONRPCClient = JSONRPCClient;