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Edit File : logger.php \| Size : 6.23 KB
<?php /** * Class Optml_Logger * Handles the logging operations. / class Optml_Logger { const LOG_TYPE_OFFLOAD = 'offload'; const LOG_TYPE_ROLLBACK = 'rollback'; const LOG_SEPARATOR = '=========='; /* * Upload directory. * * @var string / private $upload_dir; /* * Log filenames. * * @var array / private $log_filenames = [ self::LOG_TYPE_OFFLOAD => 'offload.log', self::LOG_TYPE_ROLLBACK => 'rollback.log', ]; /* * The single instance of the class. * * @var Optml_Logger / private static $instance = null; /* * Ensures only one instance of the class is loaded. * * @return Optml_Logger An instance of the class. / public static function instance() { if ( null === self::$instance ) { self::$instance = new self(); } return self::$instance; } /* * Optml_Logger constructor. * Initializes the upload directory. * * @return void / private function __construct() { $upload_dir = wp_upload_dir(); $this->upload_dir = trailingslashit( $upload_dir['basedir'] ) . 'optimole-logs/'; if ( ! file_exists( $this->upload_dir ) ) { if ( false === wp_mkdir_p( $this->upload_dir ) ) { return; } } add_action( 'wp_ajax_optml_fetch_logs', [ $this, 'fetch_logs_ajax_handler' ] ); } /* * Adds a log entry. * * @param string $type Type of log (offload/rollback). * @param string $message Log message. * @return bool Returns true on success, false on failure. / public function add_log( $type, $message ) { if ( ! array_key_exists( $type, $this->log_filenames ) ) { return false; } $this->send_log( $type, $message ); if ( ! $this->has_permission() ) { return false; } $file_path = $this->upload_dir . $this->log_filenames[ $type ]; $handle = @fopen( $file_path, 'a' ); if ( $handle === false ) { return false; } fwrite( $handle, '[' . gmdate( 'M d H:i:s' ) . '] ' . $message . "\n" ); fclose( $handle ); return true; } /* * Retrieves the log. * * @param string $type Type of log (offload/rollback). * @param int $lines Number of lines to return from the end of the log file. * @param string $separator Separator line to start retrieving log entries from. * * @return false\|string Returns log data or false on failure. / public function get_log( $type, $lines = 500, $separator = '' ) { if ( ! array_key_exists( $type, $this->log_filenames ) ) { return false; } $file_path = $this->upload_dir . $this->log_filenames[ $type ]; if ( $this->has_logs( $type ) ) { $data = $this->tailCustom( $file_path, $lines, true, $separator ); return nl2br( esc_textarea( $data ) ); } return false; } /* * Checks if the log file exists. * * @param string $type Type of log (offload/rollback). * @return bool Returns true if log file exists, false otherwise. / public function has_logs( $type ) { if ( ! array_key_exists( $type, $this->log_filenames ) ) { return false; } $file_path = $this->upload_dir . $this->log_filenames[ $type ]; return file_exists( $file_path ); } /* * Checks for permission to write to log file. * * @return bool Returns true if permission is granted, false otherwise. / public function has_permission() { return is_writable( $this->upload_dir ); } /* * Reads the last n lines from a file, or from a specific point defined by a separator. * * @param string $filepath Path to the file. * @param int $lines Number of lines to read from the end of the file. * @param bool $adaptive Use adaptive buffers. * @param string $separator Separator line to start retrieving log entries from. * @return false\|string Returns last n lines from the file or false on failure. / private function tailCustom( $filepath, $lines = 1, $adaptive = true, $separator = '' ) { $f = @fopen( $filepath, 'rb' ); if ( $f === false ) { return false; } if ( ! $adaptive ) { $buffer = 4096; } else { $buffer = min( 64, filesize( $filepath ) ); } fseek( $f, -1, SEEK_END ); $output = ''; $read = ''; $separator_found = false; while ( $buffer > 0 && ftell( $f ) > 0 ) { $seek = min( ftell( $f ), $buffer ); fseek( $f, -$seek, SEEK_CUR ); $output = ( $read = fread( $f, $seek ) ) . $output; fseek( $f, -mb_strlen( $read, '8bit' ), SEEK_CUR ); if ( ! empty( $separator ) && strpos( $output, $separator ) !== false ) { $separator_found = true; break; } $buffer = min( $buffer 2, 4096 ); } $pos = -1; if ( ! empty( $separator ) && $separator_found ) { $pos = strrpos( $output, $separator ); if ( $pos !== false ) { $output = substr( $output, $pos + strlen( $separator ) ); $pos = -1; // we reset the position to start from the beginning of the chunk when slicing. } } // Extract the desired number of lines $output_lines = explode( "\n", $output ); if ( empty( $separator ) \|\| ! $separator_found ) { $output = implode( "\n", array_slice( $output_lines, -$lines ) ); // fetch last n lines } else { // Calculate the start position for slicing $start_pos = max( $pos + 1, count( $output_lines ) - $lines ); $output = implode( "\n", array_slice( $output_lines, $start_pos, $lines ) ); // fetch from separator } fclose( $f ); return trim( $output ); } /** * Fetches the logs via AJAX. * * @return void / public function fetch_logs_ajax_handler() { // Check for nonce security $nonce = $_REQUEST['nonce']; if ( ! wp_verify_nonce( $nonce, 'wp_rest' ) ) { wp_die( __( 'Security check failed', 'optimole-wp' ) ); } // Check for necessary parameters if ( ! isset( $_REQUEST['type'] ) \|\| ! in_array( $_REQUEST['type'], array_keys( $this->log_filenames ), true ) ) { wp_die( __( 'Invalid log type', 'optimole-wp' ) ); } $lines = 10000; if ( isset( $_REQUEST['lines'] ) ) { $lines = intval( $_REQUEST['lines'] ); } // Get log type $type = $_REQUEST['type']; // Fetch the logs $logs = $this->get_log( $type, $lines, self::LOG_SEPARATOR ); // Return the logs echo $logs; wp_die(); } /* * Send logs to Axiom. * * @param string $type Type of log (offload/rollback). * @param string $message Log message. * @return void */ public function send_log( $type, $message ) { $request = new Optml_Api(); $request->send_log( $type, $message ); } } Back

Edit File : logger.php | Size : 6.23 KB

<?php
/**
 * Class Optml_Logger
 * Handles the logging operations.
 */
class Optml_Logger {

const LOG_TYPE_OFFLOAD = 'offload';
	const LOG_TYPE_ROLLBACK = 'rollback';

const LOG_SEPARATOR = '==========';

/**
	 * Upload directory.
	 *
	 * @var string
	 */
	private $upload_dir;

/**
	 * Log filenames.
	 *
	 * @var array
	 */
	private $log_filenames = [
		self::LOG_TYPE_OFFLOAD  => 'offload.log',
		self::LOG_TYPE_ROLLBACK => 'rollback.log',
	];

/**
	 * The single instance of the class.
	 *
	 * @var Optml_Logger
	 */
	private static $instance = null;

/**
	 * Ensures only one instance of the class is loaded.
	 *
	 * @return Optml_Logger An instance of the class.
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

return self::$instance;
	}

/**
	 * Optml_Logger constructor.
	 * Initializes the upload directory.
	 *
	 * @return void
	 */
	private function __construct() {
		$upload_dir       = wp_upload_dir();
		$this->upload_dir = trailingslashit( $upload_dir['basedir'] ) . 'optimole-logs/';

if ( ! file_exists( $this->upload_dir ) ) {
			if ( false === wp_mkdir_p( $this->upload_dir ) ) {
				return;
			}
		}

add_action( 'wp_ajax_optml_fetch_logs', [ $this, 'fetch_logs_ajax_handler' ] );
	}

/**
	 * Adds a log entry.
	 *
	 * @param string $type Type of log (offload/rollback).
	 * @param string $message Log message.
	 * @return bool Returns true on success, false on failure.
	 */
	public function add_log( $type, $message ) {
		if ( ! array_key_exists( $type, $this->log_filenames ) ) {
			return false;
		}

$this->send_log( $type, $message );

if ( ! $this->has_permission() ) {
			return false;
		}

$file_path = $this->upload_dir . $this->log_filenames[ $type ];
		$handle    = @fopen( $file_path, 'a' );

if ( $handle === false ) {
			return false;
		}

fwrite( $handle, '[' . gmdate( 'M d H:i:s' ) . '] ' . $message . "\n" );
		fclose( $handle );
		return true;
	}

/**
	 * Retrieves the log.
	 *
	 * @param string $type Type of log (offload/rollback).
	 * @param int    $lines Number of lines to return from the end of the log file.
	 * @param string $separator Separator line to start retrieving log entries from.
	 *
	 * @return false|string Returns log data or false on failure.
	 */
	public function get_log( $type, $lines = 500, $separator = '' ) {
		if ( ! array_key_exists( $type, $this->log_filenames ) ) {
			return false;
		}

$file_path = $this->upload_dir . $this->log_filenames[ $type ];

if ( $this->has_logs( $type ) ) {
			$data = $this->tailCustom( $file_path, $lines, true, $separator );
			return nl2br( esc_textarea( $data ) );
		}

return false;
	}

/**
	 * Checks if the log file exists.
	 *
	 * @param string $type Type of log (offload/rollback).
	 * @return bool Returns true if log file exists, false otherwise.
	 */
	public function has_logs( $type ) {
		if ( ! array_key_exists( $type, $this->log_filenames ) ) {
			return false;
		}

$file_path = $this->upload_dir . $this->log_filenames[ $type ];
		return file_exists( $file_path );
	}

/**
	 * Checks for permission to write to log file.
	 *
	 * @return bool Returns true if permission is granted, false otherwise.
	 */
	public function has_permission() {
		return is_writable( $this->upload_dir );
	}

/**
	 * Reads the last n lines from a file, or from a specific point defined by a separator.
	 *
	 * @param string $filepath Path to the file.
	 * @param int    $lines Number of lines to read from the end of the file.
	 * @param bool   $adaptive Use adaptive buffers.
	 * @param string $separator Separator line to start retrieving log entries from.
	 * @return false|string Returns last n lines from the file or false on failure.
	 */
	private function tailCustom( $filepath, $lines = 1, $adaptive = true, $separator = '' ) {
		$f = @fopen( $filepath, 'rb' );

if ( $f === false ) {
			return false;
		}

if ( ! $adaptive ) {
			$buffer = 4096;
		} else {
			$buffer = min( 64, filesize( $filepath ) );
		}

fseek( $f, -1, SEEK_END );
		$output = '';
		$read = '';
		$separator_found = false;

while ( $buffer > 0 && ftell( $f ) > 0 ) {
			$seek = min( ftell( $f ), $buffer );
			fseek( $f, -$seek, SEEK_CUR );
			$output = ( $read = fread( $f, $seek ) ) . $output;
			fseek( $f, -mb_strlen( $read, '8bit' ), SEEK_CUR );

if ( ! empty( $separator ) && strpos( $output, $separator ) !== false ) {
				$separator_found = true;
				break;
			}

$buffer = min( $buffer * 2, 4096 );
		}
		$pos = -1;
		if ( ! empty( $separator ) && $separator_found ) {
			$pos = strrpos( $output, $separator );
			if ( $pos !== false ) {
				$output = substr( $output, $pos + strlen( $separator ) );
				$pos = -1; // we reset the position to start from the beginning of the chunk when slicing.
			}
		}

// Extract the desired number of lines
		$output_lines = explode( "\n", $output );
		if ( empty( $separator ) || ! $separator_found ) {
			$output = implode( "\n", array_slice( $output_lines, -$lines ) );  // fetch last n lines
		} else {
			// Calculate the start position for slicing
			$start_pos = max( $pos + 1, count( $output_lines ) - $lines );

$output = implode( "\n", array_slice( $output_lines, $start_pos, $lines ) );  // fetch from separator
		}

fclose( $f );
		return trim( $output );
	}

/**
	 * Fetches the logs via AJAX.
	 *
	 * @return void
	 */
	public function fetch_logs_ajax_handler() {
		// Check for nonce security
		$nonce = $_REQUEST['nonce'];
		if ( ! wp_verify_nonce( $nonce, 'wp_rest' ) ) {
			wp_die( __( 'Security check failed', 'optimole-wp' ) );
		}

// Check for necessary parameters
		if ( ! isset( $_REQUEST['type'] ) || ! in_array( $_REQUEST['type'], array_keys( $this->log_filenames ), true ) ) {
			wp_die( __( 'Invalid log type', 'optimole-wp' ) );
		}

$lines = 10000;

if ( isset( $_REQUEST['lines'] ) ) {
			$lines = intval( $_REQUEST['lines'] );
		}

// Get log type
		$type = $_REQUEST['type'];

// Fetch the logs
		$logs = $this->get_log( $type, $lines, self::LOG_SEPARATOR );

// Return the logs
		echo $logs;

wp_die();
	}

/**
	 * Send logs to Axiom.
	 *
	 * @param string $type Type of log (offload/rollback).
	 * @param string $message Log message.

* @return void
	 */
	public function send_log( $type, $message ) {
		$request = new Optml_Api();
		$request->send_log( $type, $message );
	}
}

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