installed plugin W3 Total Cache version 2.3.2

2023-06-05 11:23:16 +00:00
parent d9b3c97e40
commit 51ea2ff21c
2730 changed files with 334913 additions and 0 deletions
--- a/wp-content/plugins/w3-total-cache/UsageStatistics_Source_PageCacheLog.php
+++ b/wp-content/plugins/w3-total-cache/UsageStatistics_Source_PageCacheLog.php
@ -0,0 +1,154 @@
+<?php
+namespace W3TC;
+
+
+
+/**
+ * PageCache debug log reader - provides data from this logfile
+ */
+class UsageStatistics_Source_PageCacheLog {
+	// running values
+	private $timestamp_start;
+	private $process_status;
+	private $sort_column;
+
+	private $by_uri = array();
+
+	/* if need to read more access log chunks */
+	private $more_log_needed = true;
+
+
+
+	function __construct( $timestamp_start, $process_status, $sort_column ) {
+		$this->timestamp_start = $timestamp_start;
+		$this->process_status = $process_status;
+		$this->sort_column = $sort_column;
+	}
+
+	/**
+	 * Lists entries from log with specified cache reject reason code
+	 **/
+	public function list_entries() {
+		$log_filename = Util_Debug::log_filename( 'pagecache' );
+		$h = @fopen( $log_filename, 'rb' );
+		if ( !$h ) {
+			throw new \Exception( 'Failed to open pagecache log file' . $log_filename );
+		}
+
+		fseek( $h, 0, SEEK_END );
+		$pos = ftell( $h );
+		$unparsed_head = '';
+
+		while ( $pos >= 0 && $this->more_log_needed ) {
+			$pos -= 8192;
+			if ( $pos <= 0 ) {
+				$pos = 0;
+			}
+			fseek( $h, $pos );
+
+			$s = fread( $h, 8192 );
+
+			$unparsed_head = $this->parse_string( $s . $unparsed_head, $pos > 0 );
+			if ( $pos <= 0 ) {
+				$this->more_log_needed = false;
+			}
+		}
+
+		$output = array();
+		foreach ( $this->by_uri as $uri => $data ) {
+			$output[] = array(
+				'uri' => $uri,
+				'count' => $data['count'],
+				'avg_size' => (int)( $data['sum_size'] / $data['count'] ),
+				'avg_time_ms' => (int)( $data['sum_time_ms'] / $data['count'] ),
+				'sum_time_ms' => $data['sum_time_ms'],
+				'reasons' => $data['reasons']
+			);
+		}
+
+		usort( $output, function($a, $b) {
+			return (int)($b[$this->sort_column]) - (int)($a[$this->sort_column]);
+		});
+
+		return $output;
+	}
+
+
+
+	private function parse_string( $s, $skip_first_line ) {
+		$s_length = strlen( $s );
+		$unparsed_head = '';
+
+		$n = 0;
+		if ( $skip_first_line ) {
+			for ( ; $n < $s_length; $n++ ) {
+				$c = substr( $s, $n, 1 );
+				if ( $c == "\r" || $c == "\n" ) {
+					$unparsed_head = substr( $s, 0, $n + 1 );
+					break;
+				}
+			}
+		}
+
+		$line_start = $n;
+		for ( ; $n < $s_length; $n++ ) {
+			$c = substr( $s, $n, 1 );
+			if ( $c == "\r" || $c == "\n" ) {
+				if ( $n > $line_start ) {
+					$this->push_line( substr( $s, $line_start, $n - $line_start ) );
+				}
+
+				$line_start = $n + 1;
+			}
+		}
+
+		return $unparsed_head;
+	}
+
+
+
+	private function push_line( $line ) {
+		$matches = null;
+		preg_match(
+			'/\[([^>\]]+)\] \[([^>\]]+)\] \[([^>\]]+)\] finished in (\d+) size (\d+) with process status ([^ ]+) reason (.*)/',
+			$line, $matches);
+
+		if ( !$matches ) {
+			return;
+		}
+
+		$date_string = $matches[1];
+		$uri = $matches[2];
+		$time_taken_ms = $matches[4];
+		$size = $matches[5];
+		$status = $matches[6];
+		$reason = $matches[7];
+		$time = strtotime($date_string);
+
+		// dont read more if we touched entries before timeperiod of collection
+		if ( $time < $this->timestamp_start ) {
+			$this->more_log_needed = false;
+		}
+
+		if ( $status != $this->process_status ) {
+			return;
+		}
+
+		if ( !isset( $this->by_uri[$uri] ) ) {
+			$this->by_uri[$uri] = array(
+				'count' => 0,
+				'sum_size' => 0,
+				'sum_time_ms' => 0,
+				'reasons' => array()
+			);
+		}
+
+		$this->by_uri[$uri]['count']++;
+		$this->by_uri[$uri]['sum_size'] += $size;
+		$this->by_uri[$uri]['sum_time_ms'] += $time_taken_ms;
+
+		if ( !in_array( $reason, $this->by_uri[$uri]['reasons']) ) {
+			$this->by_uri[$uri]['reasons'][] = $reason;
+		}
+	}
+}