Always enable profiling for DB queries.

yii/db/Command.php

@@ -283,22 +283,16 @@ class Command extends \yii\base\Component
 
 		try {
 			$token = "SQL: $sql";
-			if ($this->db->enableProfiling) {
-				Yii::beginProfile($token, __METHOD__);
-			}
+			Yii::beginProfile($token, __METHOD__);
 
 			$this->prepare();
 			$this->pdoStatement->execute();
 			$n = $this->pdoStatement->rowCount();
 
-			if ($this->db->enableProfiling) {
-				Yii::endProfile($token, __METHOD__);
-			}
+			Yii::endProfile($token, __METHOD__);
 			return $n;
 		} catch (\Exception $e) {
-			if ($this->db->enableProfiling) {
-				Yii::endProfile($token, __METHOD__);
-			}
+			Yii::endProfile($token, __METHOD__);
 			$message = $e->getMessage();
 
 			Yii::error("$message\nFailed to execute SQL: $rawSql", __METHOD__);
@@ -411,9 +405,7 @@ class Command extends \yii\base\Component
 
 		try {
 			$token = "SQL: $sql";
-			if ($db->enableProfiling) {
-				Yii::beginProfile($token, __METHOD__);
-			}
+			Yii::beginProfile($token, __METHOD__);
 
 			$this->prepare();
 			$this->pdoStatement->execute();
@@ -428,9 +420,7 @@ class Command extends \yii\base\Component
 				$this->pdoStatement->closeCursor();
 			}
 
-			if ($db->enableProfiling) {
-				Yii::endProfile($token, __METHOD__);
-			}
+			Yii::endProfile($token, __METHOD__);
 
 			if (isset($cache, $cacheKey) && $cache instanceof Cache) {
 				$cache->set($cacheKey, $result, $db->queryCacheDuration, $db->queryCacheDependency);
@@ -439,9 +429,7 @@ class Command extends \yii\base\Component
 
 			return $result;
 		} catch (\Exception $e) {
-			if ($db->enableProfiling) {
-				Yii::endProfile($token, __METHOD__);
-			}
+			Yii::endProfile($token, __METHOD__);
 			$message = $e->getMessage();
 			Yii::error("$message\nCommand::$method() failed: $rawSql", __METHOD__);
 			$errorInfo = $e instanceof \PDOException ? $e->errorInfo : null;

yii/db/Connection.php

@@ -215,13 +215,6 @@ class Connection extends Component
 	 */
 	public $emulatePrepare;
 	/**
-	 * @var boolean whether to enable profiling for the SQL statements being executed.
-	 * Defaults to false. This should be mainly enabled and used during development
-	 * to find out the bottleneck of SQL executions.
-	 * @see getStats
-	 */
-	public $enableProfiling = false;
-	/**
 	 * @var string the common prefix or suffix for table names. If a table name is given
 	 * as `{{%TableName}}`, then the percentage character `%` will be replaced with this
 	 * property value. For example, `{{%post}}` becomes `{{tbl_post}}` if this property is
@@ -314,12 +307,16 @@ class Connection extends Component
 			if (empty($this->dsn)) {
 				throw new InvalidConfigException('Connection::dsn cannot be empty.');
 			}
+			$token = 'Opening DB connection: ' . $this->dsn;
 			try {
-				Yii::trace('Opening DB connection: ' . $this->dsn, __METHOD__);
+				Yii::trace($token, __METHOD__);
+				Yii::beginProfile($token, __METHOD__);
 				$this->pdo = $this->createPdoInstance();
 				$this->initConnection();
+				Yii::endProfile($token, __METHOD__);
 			}
 			catch (\PDOException $e) {
+				Yii::endProfile($token, __METHOD__);
 				Yii::error("Failed to open DB connection ({$this->dsn}): " . $e->getMessage(), __METHOD__);
 				$message = YII_DEBUG ? 'Failed to open DB connection: ' . $e->getMessage() : 'Failed to open DB connection.';
 				throw new Exception($message, $e->errorInfo, (int)$e->getCode());
@@ -541,25 +538,4 @@ class Connection extends Component
 			return strtolower($this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME));
 		}
 	}
-
-	/**
-	 * Returns the statistical results of SQL queries.
-	 * The results returned include the number of SQL statements executed and
-	 * the total time spent.
-	 * In order to use this method, [[enableProfiling]] has to be set true.
-	 * @return array the first element indicates the number of SQL statements executed,
-	 * and the second element the total time spent in SQL execution.
-	 * @see \yii\logging\Logger::getProfiling()
-	 */
-	public function getQuerySummary()
-	{
-		$logger = Yii::getLogger();
-		$timings = $logger->getProfiling(array('yii\db\Command::query', 'yii\db\Command::execute'));
-		$count = count($timings);
-		$time = 0;
-		foreach ($timings as $timing) {
-			$time += $timing[1];
-		}
-		return array($count, $time);
-	}
 }

yii/logging/Logger.php

@@ -225,6 +225,24 @@ class Logger extends Component
 		return array_values($timings);
 	}
 
+	/**
+	 * Returns the statistical results of DB queries.
+	 * The results returned include the number of SQL statements executed and
+	 * the total time spent.
+	 * @return array the first element indicates the number of SQL statements executed,
+	 * and the second element the total time spent in SQL execution.
+	 */
+	public function getDbProfiling()
+	{
+		$timings = $this->getProfiling(array('yii\db\Command::query', 'yii\db\Command::execute'));
+		$count = count($timings);
+		$time = 0;
+		foreach ($timings as $timing) {
+			$time += $timing[1];
+		}
+		return array($count, $time);
+	}
+
 	private function calculateTimings()
 	{
 		$timings = array();