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[autoinstallsdev/mediawiki.git] / vendor / monolog / monolog / src / Monolog / Handler / RedisHandler.php

diff --git a/vendor/monolog/monolog/src/Monolog/Handler/RedisHandler.php b/vendor/monolog/monolog/src/Monolog/Handler/RedisHandler.php
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+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Handler;
+
+use Monolog\Formatter\LineFormatter;
+use Monolog\Logger;
+
+/**
+ * Logs to a Redis key using rpush
+ *
+ * usage example:
+ *
+ *   $log = new Logger('application');
+ *   $redis = new RedisHandler(new Predis\Client("tcp://localhost:6379"), "logs", "prod");
+ *   $log->pushHandler($redis);
+ *
+ * @author Thomas Tourlourat <thomas@tourlourat.com>
+ */
+class RedisHandler extends AbstractProcessingHandler
+{
+    private $redisClient;
+    private $redisKey;
+    protected $capSize;
+
+    /**
+     * @param \Predis\Client|\Redis $redis   The redis instance
+     * @param string                $key     The key name to push records to
+     * @param int                   $level   The minimum logging level at which this handler will be triggered
+     * @param bool                  $bubble  Whether the messages that are handled can bubble up the stack or not
+     * @param int                   $capSize Number of entries to limit list size to
+     */
+    public function __construct($redis, $key, $level = Logger::DEBUG, $bubble = true, $capSize = false)
+    {
+        if (!(($redis instanceof \Predis\Client) || ($redis instanceof \Redis))) {
+            throw new \InvalidArgumentException('Predis\Client or Redis instance required');
+        }
+
+        $this->redisClient = $redis;
+        $this->redisKey = $key;
+        $this->capSize = $capSize;
+
+        parent::__construct($level, $bubble);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function write(array $record)
+    {
+        if ($this->capSize) {
+            $this->writeCapped($record);
+        } else {
+            $this->redisClient->rpush($this->redisKey, $record["formatted"]);
+        }
+    }
+
+    /**
+     * Write and cap the collection
+     * Writes the record to the redis list and caps its
+     *
+     * @param  array $record associative record array
+     * @return void
+     */
+    protected function writeCapped(array $record)
+    {
+        if ($this->redisClient instanceof \Redis) {
+            $this->redisClient->multi()
+                ->rpush($this->redisKey, $record["formatted"])
+                ->ltrim($this->redisKey, -$this->capSize, -1)
+                ->exec();
+        } else {
+            $redisKey = $this->redisKey;
+            $capSize = $this->capSize;
+            $this->redisClient->transaction(function ($tx) use ($record, $redisKey, $capSize) {
+                $tx->rpush($redisKey, $record["formatted"]);
+                $tx->ltrim($redisKey, -$capSize, -1);
+            });
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    protected function getDefaultFormatter()
+    {
+        return new LineFormatter();
+    }
+}