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<?php
// $Id$
/**
* @file
* System monitoring and logging for administrators.
*
* The dblog module monitors your site and keeps a list of
* recorded events containing usage and performance data, errors,
* warnings, and similar operational information.
*
* @see watchdog()
*/
/**
* Implements hook_help().
*/
function dblog_help($path, $arg) {
switch ($path) {
case 'admin/help#dblog':
$output = '';
$output .= '<h3>' . t('About') . '</h3>';
$output .= '<p>' . t('The Database logging module logs system events in the Drupal database. For more information, see the online handbook entry for the <a href="@dblog">Database logging module</a>.', array('@dblog' => 'http://drupal.org/handbook/modules/dblog')) . '</p>';
$output .= '<h3>' . t('Uses') . '</h3>';
$output .= '<dl>';
$output .= '<dt>' . t('Monitoring your site') . '</dt>';
$output .= '<dd>' . t('The Database logging module allows you to view an event log on the <a href="@dblog">Recent log entries</a> page. The log is a chronological list of recorded events containing usage data, performance data, errors, warnings and operational information. Administrators should check the log on a regular basis to ensure their site is working properly.', array('@dblog' => url('admin/reports/dblog'))) . '</dd>';
$output .= '<dt>' . t('Debugging site problems') . '</dt>';
$output .= '<dd>' . t('In case of errors or problems with the site, the <a href="@dblog">Recent log entries</a> page can be useful for debugging, since it shows the sequence of events. The log entries include usage information, warnings, and errors.', array('@dblog' => url('admin/reports/dblog'))) . '</dd>';
$output .= '</dl>';
return $output;
case 'admin/reports/dblog':
return '<p>' . t('The Database logging module monitors your website, capturing system events in a log (shown here) to be reviewed by an authorized individual at a later time. This log is a list of recorded events containing usage data, performance data, errors, warnings and operational information. It is vital to check the Recent log entries report on a regular basis, as it is often the only way to tell what is going on.') . '</p>';
}
}
/**
* Implements hook_menu().
*/
function dblog_menu() {
$items['admin/reports/dblog'] = array(
'title' => 'Recent log entries',
'description' => 'View events that have recently been logged.',
'page callback' => 'dblog_overview',
'access arguments' => array('access site reports'),
'weight' => -1,
'file' => 'dblog.admin.inc',
);
$items['admin/reports/page-not-found'] = array(
'title' => "Top 'page not found' errors",
'description' => "View 'page not found' errors (404s).",
'page callback' => 'dblog_top',
'page arguments' => array('page not found'),
'access arguments' => array('access site reports'),
'file' => 'dblog.admin.inc',
);
$items['admin/reports/access-denied'] = array(
'title' => "Top 'access denied' errors",
'description' => "View 'access denied' errors (403s).",
'page callback' => 'dblog_top',
'page arguments' => array('access denied'),
'access arguments' => array('access site reports'),
'file' => 'dblog.admin.inc',
);
$items['admin/reports/event/%'] = array(
'title' => 'Details',
'page callback' => 'dblog_event',
'page arguments' => array(3),
'access arguments' => array('access site reports'),
'type' => MENU_CALLBACK,
'file' => 'dblog.admin.inc',
);
return $items;
}
/**
* Implements hook_init().
*/
function dblog_init() {
if (arg(0) == 'admin' && arg(1) == 'reports') {
// Add the CSS for this module
drupal_add_css(drupal_get_path('module', 'dblog') . '/dblog.css', array('preprocess' => FALSE));
}
}
/**
* Implements hook_cron().
*
* Remove expired log messages and flood control events.
*/
function dblog_cron() {
// Cleanup the watchdog table
if (variable_get('dblog_row_limit', 1000) > 0) {
$max = db_query('SELECT MAX(wid) FROM {watchdog}')->fetchField();
db_delete('watchdog')
->condition('wid', $max - variable_get('dblog_row_limit', 1000), '<=')
->execute();
}
}
/**
* Implements hook_user_cancel().
*/
function dblog_user_cancel($edit, $account, $method) {
switch ($method) {
case 'user_cancel_reassign':
db_update('watchdog')
->fields(array('uid' => 0))
->condition('uid', $account->uid)
->execute();
break;
case 'user_cancel_delete':
db_delete('watchdog')
->condition('uid', $account->uid)
->execute();
break;
}
}
function _dblog_get_message_types() {
$types = array();
$result = db_query('SELECT DISTINCT(type) FROM {watchdog} ORDER BY type');
foreach ($result as $object) {
$types[] = $object->type;
}
return $types;
}
/**
* Implements hook_watchdog().
*
* Note some values may be truncated for database column size restrictions.
*/
function dblog_watchdog(array $log_entry) {
Database::getConnection('default', 'default')->insert('watchdog')
->fields(array(
'uid' => $log_entry['user']->uid,
'type' => substr($log_entry['type'], 0, 64),
'message' => $log_entry['message'],
'variables' => serialize($log_entry['variables']),
'severity' => $log_entry['severity'],
'link' => substr($log_entry['link'], 0, 255),
'location' => $log_entry['request_uri'],
'referer' => $log_entry['referer'],
'hostname' => substr($log_entry['ip'], 0, 128),
'timestamp' => $log_entry['timestamp'],
))
->execute();
}
/**
* Implements hook_form_FORM_ID_alter().
*/
function dblog_form_system_logging_settings_alter(&$form, $form_state) {
$form['dblog_row_limit'] = array(
'#type' => 'select',
'#title' => t('Database log entries to keep'),
'#default_value' => variable_get('dblog_row_limit', 1000),
'#options' => array(0 => t('All')) + drupal_map_assoc(array(100, 1000, 10000, 100000, 1000000)),
'#description' => t('The maximum number of entries to keep in the database log. Requires a <a href="@cron">cron maintenance task</a>.', array('@cron' => url('admin/reports/status')))
);
$form['actions']['#weight'] = 1;
}
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