From 2261509b0d54ba5a2183bf2a5e38882ffcda4ccb Mon Sep 17 00:00:00 2001
From: MasterS77 <stassr@gmail.com>
Date: Tue, 18 Dec 2018 19:07:00 +0200
Subject: [PATCH] support db select option

---
 src/Prometheus/Storage/Redis.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Prometheus/Storage/Redis.php b/src/Prometheus/Storage/Redis.php
index f38391b..ca2daf5 100644
--- a/src/Prometheus/Storage/Redis.php
+++ b/src/Prometheus/Storage/Redis.php
@@ -41,6 +41,9 @@ public function __construct(array $options = array())
         if (!isset(self::$defaultOptions['password'])) {
             self::$defaultOptions['password'] = null;
         }
+        if (!isset(self::$defaultOptions['db'])) {
+            self::$defaultOptions['db'] = false;
+        }
 
         $this->options = array_merge(self::$defaultOptions, $options);
         $this->redis = new \Redis();
@@ -97,6 +100,9 @@ private function openConnection()
             if ($this->options['password']) {
                 $this->redis->auth($this->options['password']);
             }
+            if($this->options['db']){
+                $this->redis->select($this->options['db']);
+            }
             $this->redis->setOption(\Redis::OPT_READ_TIMEOUT, $this->options['read_timeout']);
         } catch (\RedisException $e) {
             throw new StorageException("Can't connect to Redis server", 0, $e);