Debugger: database panel WIP

framework/yii/debug/panels/DbPanel.php

@@ -6,7 +6,10 @@
  */
 
 namespace yii\debug\panels;
+
 use yii\debug\Panel;
+use yii\log\Logger;
+use yii\helpers\Html;
 
 /**
  * @author Qiang Xue <qiang.xue@gmail.com>
@@ -18,4 +21,75 @@ class DbPanel extends Panel
 	{
 		return 'Database';
 	}
+
+	public function getSummary()
+	{
+		$queryCount = count($this->data['messages']) / 2;
+		$output = <<<EOD
+<div class="yii-debug-toolbar-block">
+	DB queries: <span class="label">$queryCount</span>
+</div>
+EOD;
+		return $queryCount > 0 ? $output : '';
+	}
+
+	public function getDetail()
+	{
+		$messages = $this->data['messages'];
+		$timings = array();
+		$stack = array();
+		foreach ($messages as $i => $log) {
+			list($token, $level, $category, $timestamp) = $log;
+			$log[4] = $i;
+			if ($level == Logger::LEVEL_PROFILE_BEGIN) {
+				$stack[] = $log;
+			} elseif ($level == Logger::LEVEL_PROFILE_END) {
+				if (($last = array_pop($stack)) !== null && $last[0] === $token) {
+					$timings[$last[4]] = array(count($stack), $token, $last[3], $timestamp - $last[3]);
+				}
+			}
+		}
+
+		$now = microtime(true);
+		while (($last = array_pop($stack)) !== null) {
+			$delta = $now - $last[3];
+			$timings[$last[4]] = array(count($stack), $last[0], $last[2], $delta);
+		}
+		ksort($timings);
+
+		$rows = array();
+		foreach ($timings as $timing) {
+			$time = date('Y.m.d, H:i:s.', $timing[2]) . round(($timing[2] - floor($timing[2])) * 10000);
+			$duration = sprintf('%.1f ms', $timing[3] * 1000);
+			$procedure = str_repeat('<span class="indent">→</span>', $timing[0]) . Html::encode($timing[1]);
+			$rows[] = "<tr><td style=\"width: 80px;\">$time</td><td style=\"width: 80px;\">$duration</td><td>$procedure</td>";
+		}
+		$rows = implode("\n", $rows);
+
+		return <<<EOD
+<h1>Database Queries</h1>
+
+<table class="table table-condensed table-bordered table-striped table-hover" style="table-layout: fixed;">
+<thead>
+<tr>
+	<th style="width: 180px;">Time</th>
+	<th style="width: 80px;">Duration</th>
+	<th>Query</th>
+</tr>
+</thead>
+<tbody>
+$rows
+</tbody>
+</table>
+EOD;
+	}
+
+	public function save()
+	{
+		$target = $this->module->logTarget;
+		$messages = $target->filterMessages($target->messages, Logger::LEVEL_PROFILE, array('yii\db\Command::queryInternal'));
+		return array(
+			'messages' => $messages,
+		);
+	}
 }