tedis-mod
Version:
redis client for node.js with typescript and async
143 lines (142 loc) • 6.43 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 });
var tedis_1 = require("./tedis");
var TedisPool = /** @class */ (function () {
function TedisPool(options) {
if (options === void 0) { options = {}; }
this.connection_pool = [];
this.cushion_list = [];
this.min_conn = options.min_conn || 1;
this.max_conn = options.max_conn || 10;
this.act_conn = 0;
this.host = options.host || "127.0.0.1";
this.port = options.port || 6379;
this.password = options.password;
this.timeout = options.timeout;
this.tls = options.tls;
}
TedisPool.prototype.release = function () {
this.connection_pool.forEach(function (conn) {
conn.close();
});
};
TedisPool.prototype.getTedis = function () {
return __awaiter(this, void 0, void 0, function () {
var conn;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
conn = this.connection_pool.shift();
if (!("undefined" !== typeof conn)) return [3 /*break*/, 1];
return [2 /*return*/, conn];
case 1:
if (!(this.act_conn < this.max_conn)) return [3 /*break*/, 3];
return [4 /*yield*/, this.newConnection()];
case 2: return [2 /*return*/, _a.sent()];
case 3: return [2 /*return*/, new Promise(function (resolve, reject) {
var timer = setTimeout(function () {
_this.cushion_list.shift();
reject("timeout, the connection pool is full");
}, 1000 * 20);
_this.cushion_list.push(function (res) {
clearTimeout(timer);
_this.cushion_list.shift();
resolve(res);
});
})];
}
});
});
};
TedisPool.prototype.putTedis = function (conn) {
var callback = this.cushion_list.shift();
if ("undefined" !== typeof callback) {
callback(conn);
}
else {
this.connection_pool.push(conn);
}
};
TedisPool.prototype.newConnection = function () {
var _this = this;
return new Promise(function (resolve, reject) {
_this.act_conn++;
var conn = new tedis_1.Tedis({
host: _this.host,
port: _this.port,
password: _this.password,
timeout: _this.timeout,
tls: _this.tls,
});
conn.on("connect", function () {
conn.on("error", function (err) {
console.log(err);
});
conn.on("close", function (had_error) {
_this.closeConnection(conn);
});
conn.on("timeout", function () {
_this.miniConnection(conn);
});
resolve(conn);
});
conn.on("error", function (err) {
_this.act_conn--;
reject(err);
});
});
};
TedisPool.prototype.closeConnection = function (conn) {
var index = this.connection_pool.findIndex(function (item) {
return item.id === conn.id;
});
if (-1 !== index) {
this.connection_pool.splice(index, 1);
}
this.act_conn--;
};
TedisPool.prototype.miniConnection = function (conn) {
if (this.min_conn < this.act_conn) {
conn.close();
}
};
return TedisPool;
}());
exports.TedisPool = TedisPool;