zookeeper-commands/dist/index.js

A node.js client to run ZooKeeper Commands the four letter words.

"use strict";
function __export(m) {
    for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
}
Object.defineProperty(exports, "__esModule", { value: true });
var os = require("os");
var stat_1 = require("./stat");
var qsutil = require("./qsutil");
var nodeify_ts_1 = require("nodeify-ts");
var Netcat = require('node-netcat');
__export(require("./client"));
var extractResult = function (result) {
    var extracterArray = [
        {
            re: /ruok/,
            run: function (resultp) {
                resultp.ok = resultp.raw === 'imok';
                return resultp;
            },
        },
        {
            re: /stat/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                stat_1.default(resultp.lines, resultp.json);
                return resultp;
            },
        },
        {
            re: /conf/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                qsutil.array2json(resultp.lines, resultp.json);
                return resultp;
            },
        },
        {
            re: /cons/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                stat_1.default(resultp.lines, resultp.json);
                return resultp;
            },
        },
        {
            re: /dump/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                return resultp;
            },
        },
        {
            re: /envi/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                qsutil.array2json(resultp.lines, resultp.json);
                return resultp;
            },
        },
        {
            re: /srvr/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                qsutil.array2json2(resultp.lines, resultp.json);
                return resultp;
            },
        },
        {
            re: /wchs/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                qsutil.array2json2(resultp.lines, resultp.json);
                return resultp;
            },
        },
        {
            re: /mntr/,
            run: function (resultp) {
                resultp.lines = resultp.raw.split(os.EOL);
                resultp.json = {};
                qsutil.array2json3(resultp.lines, resultp.json);
                return resultp;
            },
        },
    ];
    extracterArray.forEach(function (extracter) {
        var re = extracter.re;
        var str = result.command;
        var m;
        if ((m = re.exec(str)) !== null) {
            if (m.index === re.lastIndex) {
                re.lastIndex++;
            }
            return extracter.run(result);
        }
    });
    return result;
};
var Zookeeper = (function () {
    function Zookeeper(options) {
        if (options === void 0) { options = new Options(); }
        this.options = options;
    }
    Zookeeper.prototype.command = function (command, callback) {
        var zookeeper = this;
        var promise = Promise.resolve().then(function () {
            if (!command || command.length !== 4) {
                throw new Error("Each command must be\n          composed of four letters https://zookeeper.apache.org/doc/r3.4.6/zookeeperAdmin.html#sc_zkCommands");
            }
            var options = {
                read_encoding: 'utf8',
                timeout: zookeeper.options.timeout_ms ? zookeeper.options.timeout_ms : 60000,
            };
            return new Promise(function (resolve, reject) {
                var client = Netcat.client(zookeeper.options.port, zookeeper.options.host, options);
                client.on('open', function () {
                    client.send(command);
                });
                client.on('data', function (data) {
                    var response = data.toString('utf8');
                    resolve(response);
                });
                client.on('error', function (err) {
                    console.log(err);
                    reject(err);
                });
                client.on('close', function () {
                });
                client.start();
            });
        }).then(function (data) {
            var result = {
                command: command,
                raw: data,
            };
            return extractResult(result);
        });
        return nodeify_ts_1.default(promise, callback);
    };
    return Zookeeper;
}());
exports.Zookeeper = Zookeeper;
var Options = (function () {
    function Options(host, port, timeout_ms) {
        if (host === void 0) { host = 'localhost'; }
        if (port === void 0) { port = 2181; }
        if (timeout_ms === void 0) { timeout_ms = 1000; }
        this.host = host;
        this.port = port;
        this.timeout_ms = timeout_ms;
    }
    return Options;
}());
exports.Options = Options;
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