liveness-check-provider.js•5.2 kB
"use strict";
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 };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
/**
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [https://neo4j.com]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var LivenessCheckProvider = /** @class */ (function () {
function LivenessCheckProvider(_a) {
var connectionLivenessCheckTimeout = _a.connectionLivenessCheckTimeout;
this._connectionLivenessCheckTimeout = connectionLivenessCheckTimeout;
}
/**
* Checks connection liveness with configured params.
*
* @param {Connection} connection
* @returns {Promise<true>} If liveness checks succeed, throws otherwise
*/
LivenessCheckProvider.prototype.check = function (connection) {
return __awaiter(this, void 0, void 0, function () {
var idleFor;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this._isCheckDisabled || this._isNewlyCreatedConnection(connection)) {
return [2 /*return*/, true];
}
idleFor = Date.now() - connection.idleTimestamp;
if (!(this._connectionLivenessCheckTimeout === 0 ||
idleFor > this._connectionLivenessCheckTimeout)) return [3 /*break*/, 2];
return [4 /*yield*/, connection.resetAndFlush()
.then(function () { return true; })];
case 1: return [2 /*return*/, _a.sent()];
case 2: return [2 /*return*/, true];
}
});
});
};
Object.defineProperty(LivenessCheckProvider.prototype, "_isCheckDisabled", {
get: function () {
return this._connectionLivenessCheckTimeout == null || this._connectionLivenessCheckTimeout < 0;
},
enumerable: false,
configurable: true
});
LivenessCheckProvider.prototype._isNewlyCreatedConnection = function (connection) {
return connection.authToken == null;
};
return LivenessCheckProvider;
}());
exports.default = LivenessCheckProvider;