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69 lines
2.1 KiB
69 lines
2.1 KiB
'use strict';
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const utils = require('./utils');
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const clientCommandMessageReg = /ERR unknown command ['`]\s*client\s*['`]/;
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module.exports = function(Queue) {
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// IDEA, How to store metadata associated to a worker.
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// create a key from the worker ID associated to the given name.
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// We keep a hash table bull:myqueue:workers where every worker is a hash key workername:workerId with json holding
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// metadata of the worker. The worker key gets expired every 30 seconds or so, we renew the worker metadata.
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//
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Queue.prototype.setWorkerName = function() {
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return utils
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.isRedisReady(this.client)
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.then(() => {
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const connectionName = this.clientName();
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this.bclient.options.connectionName = connectionName;
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return this.bclient.client('setname', connectionName);
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})
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.catch(err => {
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if (!clientCommandMessageReg.test(err.message)) throw err;
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});
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};
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Queue.prototype.getWorkers = function() {
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return utils
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.isRedisReady(this.client)
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.then(() => {
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return this.client.client('list');
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})
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.then(clients => {
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return this.parseClientList(clients);
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})
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.catch(err => {
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if (!clientCommandMessageReg.test(err.message)) throw err;
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});
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};
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Queue.prototype.base64Name = function() {
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return Buffer.from(this.name).toString('base64');
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};
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Queue.prototype.clientName = function() {
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return this.keyPrefix + ':' + this.base64Name();
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};
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Queue.prototype.parseClientList = function(list) {
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const lines = list.split('\n');
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const clients = [];
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lines.forEach(line => {
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const client = {};
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const keyValues = line.split(' ');
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keyValues.forEach(keyValue => {
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const index = keyValue.indexOf('=');
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const key = keyValue.substring(0, index);
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const value = keyValue.substring(index + 1);
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client[key] = value;
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});
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const name = client['name'];
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if (name && name.startsWith(this.clientName())) {
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client['name'] = this.name;
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clients.push(client);
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}
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});
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return clients;
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};
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};
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