@evpower/ocpp-ts
Version:
OCPP 1.6: Open Charge Point Protocol
204 lines • 9.6 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 (g && (g = 0, op[0] && (_ = 0)), _) 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 };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Protocol = void 0;
var uuid_1 = require("uuid");
var schemas_1 = __importDefault(require("./schemas"));
var OcppError_1 = require("./OcppError");
var SchemaValidator_1 = require("./SchemaValidator");
var CALL_MESSAGE = 2; // Client-to-Server
var CALLRESULT_MESSAGE = 3; // Server-to-Client
var CALLERROR_MESSAGE = 4; // Server-to-Client
var Protocol = /** @class */ (function () {
function Protocol(eventEmitter, socket) {
var _this = this;
this.pendingCalls = {};
this.eventEmitter = eventEmitter;
this.socket = socket;
this.socket.on('message', function (message) {
_this.onMessage(message.toString());
});
}
Protocol.prototype.onMessage = function (message) {
try {
var _a = JSON.parse(message), messageType = _a[0], rest = _a.slice(1);
if (!Array.isArray(rest)) {
throw new Error('ProtocolError');
}
if (messageType === CALL_MESSAGE && rest.length === 3) {
var messageId = rest[0], action = rest[1], payload = rest[2];
this.onCall(messageId, action, payload);
}
else if (messageType === CALLRESULT_MESSAGE && rest.length === 2) {
var messageId = rest[0], payload = rest[1];
this.onCallResult(messageId, payload);
}
else if (messageType === CALLERROR_MESSAGE && rest.length === 4) {
var messageId = rest[0], errorCode = rest[1], errorDescription = rest[2], errorDetails = rest[3];
this.onCallError(messageId, errorCode, errorDescription, errorDetails);
}
else {
throw new Error('ProtocolError');
}
}
catch (err) {
if (err instanceof SyntaxError || err instanceof Error) {
console.error(err.message);
}
}
};
Protocol.prototype.callRequest = function (request, payload) {
var _this = this;
return new Promise(function (resolve, reject) {
try {
var messageId_1 = (0, uuid_1.v4)();
var result = JSON.stringify([CALL_MESSAGE,
messageId_1,
request,
payload]);
_this.socket.send(result);
_this.pendingCalls[messageId_1] = {
resolve: resolve,
reject: reject,
};
setTimeout(function () {
// timeout error
_this.onCallError(messageId_1, OcppError_1.ERROR_INTERNALERROR, 'No response from the client', {});
}, 10000);
}
catch (e) {
console.error(e);
reject(e);
}
});
};
Protocol.prototype.callError = function (messageId, error) {
try {
var result = JSON.stringify([CALLERROR_MESSAGE,
messageId,
error.code,
error.message,
error.details || {}]);
this.socket.send(result);
}
catch (e) {
console.error(e);
}
};
Protocol.prototype.onCallError = function (messageId, errorCode, errorDescription, errorDetails) {
if (this.pendingCalls[messageId]) {
var reject = this.pendingCalls[messageId].reject;
if (reject) {
reject(new OcppError_1.OcppError(errorCode, errorDescription, errorDetails));
}
delete this.pendingCalls[messageId];
}
};
Protocol.prototype.onCallResult = function (messageId, payload) {
if (this.pendingCalls[messageId]) {
var resolve = this.pendingCalls[messageId].resolve;
if (resolve) {
resolve(payload);
}
delete this.pendingCalls[messageId];
}
};
Protocol.prototype.onCall = function (messageId, request, payload) {
return __awaiter(this, void 0, void 0, function () {
var schema, validator, response, e_1;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
schema = schemas_1.default[request];
validator = new SchemaValidator_1.SchemaValidator(schema);
validator.validate(payload);
return [4 /*yield*/, new Promise(function (resolve, reject) {
setTimeout(function () {
// timeout error
reject(new OcppError_1.OcppError(OcppError_1.ERROR_INTERNALERROR, 'No response from the handler'));
}, 10000);
var hasListener = _this.eventEmitter.emit(request, payload, function (result) {
resolve(result);
});
if (!hasListener) {
reject(new OcppError_1.OcppError(OcppError_1.ERROR_NOTIMPLEMENTED, "Listener for action \"".concat(request, "\" not set")));
}
})];
case 1:
response = _a.sent();
this.callResult(messageId, request, response);
return [3 /*break*/, 3];
case 2:
e_1 = _a.sent();
if (e_1 instanceof OcppError_1.OcppError) {
this.callError(messageId, e_1);
}
else {
this.callError(messageId, new OcppError_1.OcppError(OcppError_1.ERROR_INTERNALERROR, 'An internal error occurred and the receiver was not able to process the requested Action'));
}
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
});
};
Protocol.prototype.callResult = function (messageId, action, responsePayload) {
try {
var result = JSON.stringify([
CALLRESULT_MESSAGE,
messageId,
responsePayload
]);
this.socket.send(result);
}
catch (e) {
if (e instanceof SyntaxError) {
this.callError(messageId, new OcppError_1.OcppError(OcppError_1.ERROR_INTERNALERROR, 'Response payload is invalid'));
console.error(e.message);
}
}
};
return Protocol;
}());
exports.Protocol = Protocol;
//# sourceMappingURL=Protocol.js.map