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monolog.module in Monolog 7

Same filename and directory in other branches
  1. 8 monolog.module
  2. 6 monolog.module
  3. 2.x monolog.module

A Framework and UI for integrating with the Monolog library.

File

monolog.module
View source 
<?php

/**
 * @file
 * A Framework and UI for integrating with the Monolog library.
 */
use Drupal\Monolog\Logger;
use Psr\Log\NullLogger;
require_once __DIR__ . '/monolog.crud.inc';

/**
 * Implements hook_hook_info().
 */
function monolog_hook_info() {
  return array(
    'monolog_channel_info' => array(
      'group' => 'monolog',
    ),
    'monolog_handler_info' => array(
      'group' => 'monolog',
    ),
    'monolog_handler_path' => array(
      'group' => 'monolog',
    ),
  );
}

/**
 * Implements hook_menu().
 */
function monolog_menu() {
  $items = array();
  $base_path = 'admin/config/development/monolog';
  $base_item = array(
    'access arguments' => array(
      'administer site configuration',
    ),
    'file' => 'monolog.admin.inc',
  );
  $items[$base_path] = array(
    'title' => 'Monolog',
    'description' => 'Configure Monolog channels and profiles.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_channel_form',
    ),
  ) + $base_item;
  $items[$base_path . '/channel'] = array(
    'title' => 'Channels',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -10,
  );
  $items[$base_path . '/profile'] = array(
    'title' => 'Logging Profiles',
    'description' => 'Configure logging channels.',
    'page callback' => 'monolog_profile_page',
    'type' => MENU_LOCAL_TASK,
    'weight' => -5,
  ) + $base_item;
  $items[$base_path . '/profile/add'] = array(
    'title' => 'Add profile',
    'description' => 'Add a logging profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_profile_form',
    ),
    'type' => MENU_LOCAL_ACTION,
  ) + $base_item;
  $items[$base_path . '/profile/import'] = array(
    'title' => 'Import profile',
    'description' => 'Import a logging profile configuration',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_profile_import_form',
    ),
    'type' => MENU_LOCAL_ACTION,
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile'] = array(
    'title' => 'Edit',
    'description' => 'Edit a logging profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_profile_form',
      5,
    ),
    'weight' => -10,
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile/edit'] = array(
    'title' => 'Edit',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -10,
  );
  $items[$base_path . '/profile/%monolog_profile/export'] = array(
    'title' => 'Export',
    'description' => 'Export a logging profile configuration',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_profile_export_form',
      5,
    ),
    'type' => MENU_LOCAL_TASK,
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile/delete'] = array(
    'title' => 'Delete',
    'description' => 'Delete a logging profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_profile_delete_form',
      5,
    ),
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile/handler/add'] = array(
    'title' => 'Add handler',
    'description' => 'Add a logging handler to the profile.',
    'page callback' => 'monolog_handler_page',
    'page arguments' => array(
      5,
    ),
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile/handler/add/%monolog_handler_info'] = array(
    'title' => 'Configure handler',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_handler_form',
      5,
    ),
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile/handler/%monolog_handler/edit'] = array(
    'title' => 'Configure handler',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_handler_form',
      5,
      7,
    ),
    'load arguments' => array(
      5,
    ),
  ) + $base_item;
  $items[$base_path . '/profile/%monolog_profile/handler/%monolog_handler/delete'] = array(
    'title' => 'Delete',
    'description' => 'Remove a handler from the profile',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'monolog_handler_delete_form',
      5,
      7,
    ),
    'load arguments' => array(
      5,
    ),
  ) + $base_item;
  return $items;
}

/**
 * Implements hook_theme().
 */
function monolog_theme() {
  return array(
    'monolog_channel_table' => array(
      'render element' => 'element',
      'file' => 'monolog.admin.inc',
    ),
    'monolog_handler_table' => array(
      'render element' => 'element',
      'file' => 'monolog.admin.inc',
    ),
  );
}

/**
 * Implements hook_ctools_plugin_api().
 */
function monolog_ctools_plugin_api($owner, $api) {
  if ('monolog' == $owner && 'monolog' == $api) {
    return array(
      'version' => 1,
    );
  }
}

/**
 * Factory function for Monolog loggers.
 *
 * @param string $channel_name
 *   The machine name the logging channel.
 *
 * @return Logger
 *
 * @throws \RuntimeException
 */
function monolog($channel_name) {

  // We do not use drupal_static() since this is a high frequency function.
  static $loggers = array();
  if (!isset($loggers[$channel_name])) {
    try {
      if (function_exists('composer_manager_register_autoloader')) {
        composer_manager_register_autoloader();
      }
      if (!class_exists('Drupal\\Monolog\\Logger')) {
        $message = t('The Drupal\\Monolog\\Logger class was not found. Make sure the Monolog package is installed via Composer.');
        throw new \RuntimeException($message);
      }
      $channel_profiles = variable_get('monolog_channel_profiles', array());
      if (!isset($channel_profiles[$channel_name])) {
        $channel_info = monolog_channel_info_load($channel_name);
        $channel_profiles[$channel_name] = $channel_info['default profile'];
      }
      if (!($profile = monolog_profile_load($channel_profiles[$channel_name]))) {
        $message = t('Logging profile not valid: @profile', array(
          '@profile' => $profile,
        ));
        throw new \InvalidArgumentException($message);
      }
      $logger = new Logger($channel_name);
      monolog_push_handlers($logger, $profile);
      $loggers[$channel_name] = $logger;
    } catch (\InvalidArgumentException $e) {
      $loggers[$channel_name] = new NullLogger();

      // The user module might not be loaded if watchdog() is called too early.
      // @see http://drupal.org/node/1997462
      if (function_exists('user_access') && user_access('administer site configuration')) {
        drupal_set_message($e
          ->getMessage(), 'error');
      }
    }
  }
  return $loggers[$channel_name];
}

/**
 * Pushes handlers onto the stack.
 *
 * @param Logger $logger
 *   The logger that handlers are being pushed onto.
 * @param stdClass $profile
 *   The logging profile configuration.
 *
 * @throws \InvalidArgumentException
 */
function monolog_push_handlers(Logger $logger, stdClass $profile) {

  // Reverse the handlers since they are pushed onto the stack. This allows
  // handlers at the top of the table to be processed first.
  $handlers = array_reverse($profile->options['handlers']);
  foreach ($handlers as $handler_name => $handler_config) {
    $handler_info = monolog_handler_info_load($handler_config['handler']);
    if (!$handler_info) {
      $message = t('Monolog handler not valid: @handler', array(
        '@handler' => $handler_config['handler'],
      ));
      throw new \InvalidArgumentException($message);
    }
    monolog_load_handler_include($handler_info);
    if (!function_exists($handler_info['loader callback'])) {
      $message = t('Function not defined: @function', array(
        '@function' => $handler_info['loader callback'],
      ));
      throw new \InvalidArgumentException($message);
    }
    $handler_config['bubble'] = (bool) $handler_config['bubble'];
    $handler = $handler_info['loader callback']($handler_config);
    $logger
      ->pushHandler($handler);
  }
}

/**
 * Helper function that prepares a directory for logging.
 *
 * @param string $directory
 *   The URI to the directory containing the log files.
 *
 * @throws \InvalidArgumentException
 */
function monolog_prepare_log_dir($directory) {
  if (!file_prepare_directory($directory, FILE_CREATE_DIRECTORY)) {
    throw new \InvalidArgumentException(t('Error creating directory: @dir', array(
      '@dir' => $directory,
    )));
  }
  if (0 === strpos($directory, 'public://')) {
    file_create_htaccess($directory, TRUE);
  }
}

/**
 * Loads a "handler include" given the handler definition.
 *
 * @param array $handler_info
 *   The handler's definition whose include file is being loaded.
 */
function monolog_load_handler_include(array $handler_info) {
  static $loaded = array();
  if ($handler_info['handler file'] && empty($loaded[$handler_info['handler file']])) {
    $loaded[$handler_info['handler file']] = TRUE;
    if ($handler_info['handler file'] && file_exists($handler_info['handler file'])) {
      require $handler_info['handler file'];
    }
  }
}

/**
 * Returns a unique identifier for the page request or PHP process.
 *
 * @return string
 */
function monolog_request_id() {
  static $request_id = FALSE;
  if (!$request_id) {
    $request_id = uniqid();
  }
  return $request_id;
}

Functions

Namesort descending Description
monolog Factory function for Monolog loggers.
monolog_ctools_plugin_api Implements hook_ctools_plugin_api().
monolog_hook_info Implements hook_hook_info().
monolog_load_handler_include Loads a "handler include" given the handler definition.
monolog_menu Implements hook_menu().
monolog_prepare_log_dir Helper function that prepares a directory for logging.
monolog_push_handlers Pushes handlers onto the stack.
monolog_request_id Returns a unique identifier for the page request or PHP process.
monolog_theme Implements hook_theme().