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84 lines
3.3 KiB
84 lines
3.3 KiB
'use strict';
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var utils = require('./utils');
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var URL = require('url');
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module.exports = function createClient (port_arg, host_arg, options) {
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if (typeof port_arg === 'number' || typeof port_arg === 'string' && /^\d+$/.test(port_arg)) {
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var host;
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if (typeof host_arg === 'string') {
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host = host_arg;
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} else {
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if (options && host_arg) {
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throw new TypeError('Unknown type of connection in createClient()');
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}
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options = options || host_arg;
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}
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options = utils.clone(options);
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options.host = host || options.host;
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options.port = port_arg;
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} else if (typeof port_arg === 'string' || port_arg && port_arg.url) {
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options = utils.clone(port_arg.url ? port_arg : host_arg || options);
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var url = port_arg.url || port_arg;
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var parsed = URL.parse(url, true, true);
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// [redis:]//[[user][:password]@][host][:port][/db-number][?db=db-number[&password=bar[&option=value]]]
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if (parsed.slashes) { // We require slashes
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if (parsed.auth) {
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options.password = parsed.auth.slice(parsed.auth.indexOf(':') + 1);
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}
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if (parsed.protocol) {
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if (parsed.protocol === 'rediss:') {
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options.tls = options.tls || {};
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} else if (parsed.protocol !== 'redis:') {
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console.warn('node_redis: WARNING: You passed "' + parsed.protocol.substring(0, parsed.protocol.length - 1) + '" as protocol instead of the "redis" protocol!');
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}
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}
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if (parsed.pathname && parsed.pathname !== '/') {
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options.db = parsed.pathname.substr(1);
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}
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if (parsed.hostname) {
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options.host = parsed.hostname;
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}
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if (parsed.port) {
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options.port = parsed.port;
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}
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if (parsed.search !== '') {
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var elem;
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for (elem in parsed.query) {
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// If options are passed twice, only the parsed options will be used
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if (elem in options) {
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if (options[elem] === parsed.query[elem]) {
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console.warn('node_redis: WARNING: You passed the ' + elem + ' option twice!');
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} else {
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throw new RangeError('The ' + elem + ' option is added twice and does not match');
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}
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}
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options[elem] = parsed.query[elem];
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}
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}
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} else if (parsed.hostname) {
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throw new RangeError('The redis url must begin with slashes "//" or contain slashes after the redis protocol');
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} else {
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options.path = url;
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}
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} else if (typeof port_arg === 'object' || port_arg === undefined) {
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options = utils.clone(port_arg || options);
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options.host = options.host || host_arg;
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if (port_arg && arguments.length !== 1) {
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throw new TypeError('Too many arguments passed to createClient. Please only pass the options object');
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}
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}
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if (!options) {
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throw new TypeError('Unknown type of connection in createClient()');
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}
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return options;
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};
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