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vendor/yiisoft/yii2-mongodb/src/log/MongoDbTarget.php

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+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\mongodb\log;
+
+use yii\base\InvalidConfigException;
+use yii\di\Instance;
+use yii\helpers\VarDumper;
+use yii\log\Target;
+use yii\mongodb\Connection;
+
+/**
+ * MongoDbTarget stores log messages in a MongoDB collection.
+ *
+ * By default, MongoDbTarget stores the log messages in a MongoDB collection named 'log'.
+ * The collection can be changed by setting the [[logCollection]] property.
+ *
+ * @author Paul Klimov <klimov.paul@gmail.com>
+ * @since 2.0
+ */
+class MongoDbTarget extends Target
+{
+    /**
+     * @var Connection|string the MongoDB connection object or the application component ID of the MongoDB connection.
+     * After the MongoDbTarget object is created, if you want to change this property, you should only assign it
+     * with a MongoDB connection object.
+     */
+    public $db = 'mongodb';
+    /**
+     * @var string|array the name of the MongoDB collection that stores the session data.
+     * Please refer to [[Connection::getCollection()]] on how to specify this parameter.
+     * This collection is better to be pre-created with fields 'id' and 'expire' indexed.
+     */
+    public $logCollection = 'log';
+
+
+    /**
+     * Initializes the MongoDbTarget component.
+     * This method will initialize the [[db]] property to make sure it refers to a valid MongoDB connection.
+     * @throws InvalidConfigException if [[db]] is invalid.
+     */
+    public function init()
+    {
+        parent::init();
+        $this->db = Instance::ensure($this->db, Connection::className());
+    }
+
+    /**
+     * Stores log messages to MongoDB collection.
+     */
+    public function export()
+    {
+        $rows = [];
+        foreach ($this->messages as $message) {
+            list($text, $level, $category, $timestamp) = $message;
+            if (!is_string($text)) {
+                // exceptions may not be serializable if in the call stack somewhere is a Closure
+                if ($text instanceof \Throwable || $text instanceof \Exception) {
+                    $text = (string) $text;
+                } else {
+                    $text = VarDumper::export($text);
+                }
+            }
+            $rows[] = [
+                'level' => $level,
+                'category' => $category,
+                'log_time' => $timestamp,
+                'prefix' => $this->getMessagePrefix($message),
+                'message' => $text,
+            ];
+        }
+
+        $this->db->getCollection($this->logCollection)->batchInsert($rows);
+    }
+}