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<?php
/**
* A message logger for the Jetpack Sitemap module.
*
* @package Jetpack
* @since 4.8.0
*/
/**
* Handles logging errors and debug messages for sitemap generator.
*
* A Jetpack_Sitemap_Logger object keeps track of its birth time as well
* as a "unique" ID string. Calling the report() method writes a message
* to the PHP error log as well as the ID string for easier grepping.
*
* @since 4.8.0
*/
class Jetpack_Sitemap_Logger {
/**
* A unique-ish string for each logger, enabling us to grep
* for the messages written by an individual generation phase.
*
* @access private
* @since 4.8.0
* @var string $key The key string.
*/
private $key;
/**
* The birth time of this object in microseconds.
*
* @access private
* @since 4.8.0
* @var int $starttime The birth time.
*/
private $starttime;
/**
* Initializes a new logger object.
*
* @access public
* @since 4.8.0
*
* @param string $message An optional message string to be written to the debug log on initialization.
*/
public function __construct( $message = null ) {
$this->key = wp_generate_password( 5, false );
$this->starttime = microtime( true );
if ( ! is_null( $message ) ) {
$this->report( $message );
}
return;
}
/**
* Writes a string to the debug log, including the logger's ID string.
*
* @access public
* @since 4.8.0
*
* @param string $message The string to be written to the log.
*/
public function report( $message ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) {
error_log( 'jp-sitemap-' . $this->key . ': ' . $message );
}
return;
}
/**
* Writes the elapsed lifetime of the logger to the debug log, with an optional message.
*
* @access public
* @since 4.8.0
*
* @param string $message The optional message string. Default is the empty string.
*/
public function time( $message = '' ) {
$time = round( microtime( true ) - $this->starttime, 3 );
$this->report( $message . ' ' . $time . ' seconds elapsed.' );
return;
}
}
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