Initial commit，修正

vendor/huawei/obsclient/Monolog/Handler/SamplingHandler.php

@@ -0,0 +1,82 @@
+<?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;
+
+/**
+ * Sampling handler
+ *
+ * A sampled event stream can be useful for logging high frequency events in
+ * a production environment where you only need an idea of what is happening
+ * and are not concerned with capturing every occurrence. Since the decision to
+ * handle or not handle a particular event is determined randomly, the
+ * resulting sampled log is not guaranteed to contain 1/N of the events that
+ * occurred in the application, but based on the Law of large numbers, it will
+ * tend to be close to this ratio with a large number of attempts.
+ *
+ * @author Bryan Davis <bd808@wikimedia.org>
+ * @author Kunal Mehta <legoktm@gmail.com>
+ */
+class SamplingHandler extends AbstractHandler
+{
+    /**
+     * @var callable|HandlerInterface $handler
+     */
+    protected $handler;
+
+    /**
+     * @var int $factor
+     */
+    protected $factor;
+
+    /**
+     * @param callable|HandlerInterface $handler Handler or factory callable($record, $fingersCrossedHandler).
+     * @param int                       $factor  Sample factor
+     */
+    public function __construct($handler, $factor)
+    {
+        parent::__construct();
+        $this->handler = $handler;
+        $this->factor = $factor;
+
+        if (!$this->handler instanceof HandlerInterface && !is_callable($this->handler)) {
+            throw new \RuntimeException("The given handler (".json_encode($this->handler).") is not a callable nor a Monolog\Handler\HandlerInterface object");
+        }
+    }
+
+    public function isHandling(array $record)
+    {
+        return $this->handler->isHandling($record);
+    }
+
+    public function handle(array $record)
+    {
+        if ($this->isHandling($record) && mt_rand(1, $this->factor) === 1) {
+            // The same logic as in FingersCrossedHandler
+            if (!$this->handler instanceof HandlerInterface) {
+                $this->handler = call_user_func($this->handler, $record, $this);
+                if (!$this->handler instanceof HandlerInterface) {
+                    throw new \RuntimeException("The factory callable should return a HandlerInterface");
+                }
+            }
+
+            if ($this->processors) {
+                foreach ($this->processors as $processor) {
+                    $record = call_user_func($processor, $record);
+                }
+            }
+
+            $this->handler->handle($record);
+        }
+
+        return false === $this->bubble;
+    }
+}