316 lines
8.8 KiB
PHP
316 lines
8.8 KiB
PHP
<?php
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/**
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* Provides logging capabilities for debugging purposes.
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*
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* @class WC_Logger
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* @version 2.0.0
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* @package WooCommerce\Classes
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*/
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use Automattic\Jetpack\Constants;
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defined( 'ABSPATH' ) || exit;
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/**
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* WC_Logger class.
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*/
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class WC_Logger implements WC_Logger_Interface {
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/**
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* Stores registered log handlers.
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*
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* @var array
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*/
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protected $handlers;
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/**
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* Minimum log level this handler will process.
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*
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* @var int Integer representation of minimum log level to handle.
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*/
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protected $threshold;
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/**
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* Constructor for the logger.
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*
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* @param array $handlers Optional. Array of log handlers. If $handlers is not provided, the filter 'woocommerce_register_log_handlers' will be used to define the handlers. If $handlers is provided, the filter will not be applied and the handlers will be used directly.
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* @param string $threshold Optional. Define an explicit threshold. May be configured via WC_LOG_THRESHOLD. By default, all logs will be processed.
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*/
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public function __construct( $handlers = null, $threshold = null ) {
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if ( null === $handlers ) {
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$handlers = apply_filters( 'woocommerce_register_log_handlers', array() );
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}
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$register_handlers = array();
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if ( ! empty( $handlers ) && is_array( $handlers ) ) {
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foreach ( $handlers as $handler ) {
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$implements = class_implements( $handler );
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if ( is_object( $handler ) && is_array( $implements ) && in_array( 'WC_Log_Handler_Interface', $implements, true ) ) {
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$register_handlers[] = $handler;
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} else {
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wc_doing_it_wrong(
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__METHOD__,
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sprintf(
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/* translators: 1: class name 2: WC_Log_Handler_Interface */
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__( 'The provided handler %1$s does not implement %2$s.', 'woocommerce' ),
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'<code>' . esc_html( is_object( $handler ) ? get_class( $handler ) : $handler ) . '</code>',
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'<code>WC_Log_Handler_Interface</code>'
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),
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'3.0'
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);
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}
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}
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}
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// Support the constant as long as a valid log level has been set for it.
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if ( null === $threshold ) {
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$threshold = Constants::get_constant( 'WC_LOG_THRESHOLD' );
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if ( null !== $threshold && ! WC_Log_Levels::is_valid_level( $threshold ) ) {
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$threshold = null;
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}
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}
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if ( null !== $threshold ) {
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$threshold = WC_Log_Levels::get_level_severity( $threshold );
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}
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$this->handlers = $register_handlers;
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$this->threshold = $threshold;
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}
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/**
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* Determine whether to handle or ignore log.
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*
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* @param string $level emergency|alert|critical|error|warning|notice|info|debug.
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* @return bool True if the log should be handled.
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*/
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protected function should_handle( $level ) {
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if ( null === $this->threshold ) {
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return true;
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}
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return $this->threshold <= WC_Log_Levels::get_level_severity( $level );
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}
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/**
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* Add a log entry.
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*
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* This is not the preferred method for adding log messages. Please use log() or any one of
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* the level methods (debug(), info(), etc.). This method may be deprecated in the future.
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*
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* @param string $handle File handle.
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* @param string $message Message to log.
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* @param string $level Logging level.
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* @return bool
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*/
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public function add( $handle, $message, $level = WC_Log_Levels::NOTICE ) {
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$message = apply_filters( 'woocommerce_logger_add_message', $message, $handle );
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$this->log(
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$level,
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$message,
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array(
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'source' => $handle,
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'_legacy' => true,
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)
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);
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wc_do_deprecated_action( 'woocommerce_log_add', array( $handle, $message ), '3.0', 'This action has been deprecated with no alternative.' );
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return true;
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}
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/**
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* Add a log entry.
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*
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* @param string $level One of the following:
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* 'emergency': System is unusable.
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* 'alert': Action must be taken immediately.
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* 'critical': Critical conditions.
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* 'error': Error conditions.
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* 'warning': Warning conditions.
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* 'notice': Normal but significant condition.
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* 'info': Informational messages.
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* 'debug': Debug-level messages.
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* @param string $message Log message.
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* @param array $context Optional. Additional information for log handlers.
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*/
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public function log( $level, $message, $context = array() ) {
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if ( ! WC_Log_Levels::is_valid_level( $level ) ) {
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/* translators: 1: WC_Logger::log 2: level */
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wc_doing_it_wrong( __METHOD__, sprintf( __( '%1$s was called with an invalid level "%2$s".', 'woocommerce' ), '<code>WC_Logger::log</code>', $level ), '3.0' );
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}
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if ( $this->should_handle( $level ) ) {
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$timestamp = time();
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foreach ( $this->handlers as $handler ) {
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/**
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* Filter the logging message. Returning null will prevent logging from occuring since 5.3.
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*
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* @since 3.1
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* @param string $message Log message.
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* @param string $level One of: emergency, alert, critical, error, warning, notice, info, or debug.
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* @param array $context Additional information for log handlers.
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* @param object $handler The handler object, such as WC_Log_Handler_File. Available since 5.3.
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*/
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$message = apply_filters( 'woocommerce_logger_log_message', $message, $level, $context, $handler );
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if ( null !== $message ) {
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$handler->handle( $timestamp, $level, $message, $context );
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}
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}
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}
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}
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/**
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* Adds an emergency level message.
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*
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* System is unusable.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function emergency( $message, $context = array() ) {
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$this->log( WC_Log_Levels::EMERGENCY, $message, $context );
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}
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/**
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* Adds an alert level message.
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*
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* Action must be taken immediately.
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* Example: Entire website down, database unavailable, etc.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function alert( $message, $context = array() ) {
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$this->log( WC_Log_Levels::ALERT, $message, $context );
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}
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/**
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* Adds a critical level message.
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*
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* Critical conditions.
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* Example: Application component unavailable, unexpected exception.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function critical( $message, $context = array() ) {
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$this->log( WC_Log_Levels::CRITICAL, $message, $context );
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}
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/**
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* Adds an error level message.
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*
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* Runtime errors that do not require immediate action but should typically be logged
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* and monitored.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function error( $message, $context = array() ) {
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$this->log( WC_Log_Levels::ERROR, $message, $context );
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}
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/**
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* Adds a warning level message.
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*
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* Exceptional occurrences that are not errors.
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*
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* Example: Use of deprecated APIs, poor use of an API, undesirable things that are not
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* necessarily wrong.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function warning( $message, $context = array() ) {
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$this->log( WC_Log_Levels::WARNING, $message, $context );
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}
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/**
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* Adds a notice level message.
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*
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* Normal but significant events.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function notice( $message, $context = array() ) {
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$this->log( WC_Log_Levels::NOTICE, $message, $context );
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}
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/**
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* Adds a info level message.
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*
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* Interesting events.
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* Example: User logs in, SQL logs.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function info( $message, $context = array() ) {
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$this->log( WC_Log_Levels::INFO, $message, $context );
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}
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/**
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* Adds a debug level message.
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*
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* Detailed debug information.
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*
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* @see WC_Logger::log
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*
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* @param string $message Message to log.
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* @param array $context Log context.
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*/
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public function debug( $message, $context = array() ) {
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$this->log( WC_Log_Levels::DEBUG, $message, $context );
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}
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/**
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* Clear entries for a chosen file/source.
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*
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* @param string $source Source/handle to clear.
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* @return bool
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*/
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public function clear( $source = '' ) {
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if ( ! $source ) {
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return false;
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}
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foreach ( $this->handlers as $handler ) {
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if ( is_callable( array( $handler, 'clear' ) ) ) {
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$handler->clear( $source );
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}
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}
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return true;
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}
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/**
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* Clear all logs older than a defined number of days. Defaults to 30 days.
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*
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* @since 3.4.0
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*/
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public function clear_expired_logs() {
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$days = absint( apply_filters( 'woocommerce_logger_days_to_retain_logs', 30 ) );
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$timestamp = strtotime( "-{$days} days" );
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foreach ( $this->handlers as $handler ) {
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if ( is_callable( array( $handler, 'delete_logs_before_timestamp' ) ) ) {
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$handler->delete_logs_before_timestamp( $timestamp );
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}
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}
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}
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}
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