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<?php
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/**
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* @file
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* Install, update and uninstall functions for the dblog module.
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*/
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/**
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* Implements hook_schema().
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*/
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function dblog_schema() {
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$schema['watchdog'] = array(
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'description' => 'Table that contains logs of all system events.',
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'fields' => array(
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'wid' => array(
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'type' => 'serial',
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'not null' => TRUE,
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'description' => 'Primary Key: Unique watchdog event ID.',
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),
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'uid' => array(
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'type' => 'int',
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'not null' => TRUE,
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'default' => 0,
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'description' => 'The {users}.uid of the user who triggered the event.',
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),
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'type' => array(
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'type' => 'varchar',
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'length' => 64,
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'not null' => TRUE,
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'default' => '',
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'description' => 'Type of log message, for example "user" or "page not found."',
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),
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'message' => array(
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'type' => 'text',
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'not null' => TRUE,
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'size' => 'big',
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'description' => 'Text of log message to be passed into the t() function.',
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),
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'variables' => array(
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'type' => 'blob',
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'not null' => TRUE,
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'size' => 'big',
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'description' => 'Serialized array of variables that match the message string and that is passed into the t() function.',
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),
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'severity' => array(
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => TRUE,
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'default' => 0,
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'size' => 'tiny',
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'description' => 'The severity level of the event; ranges from 0 (Emergency) to 7 (Debug)',
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),
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'link' => array(
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'type' => 'varchar',
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'length' => 255,
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'not null' => FALSE,
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'default' => '',
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'description' => 'Link to view the result of the event.',
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),
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'location' => array(
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'type' => 'text',
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'not null' => TRUE,
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'description' => 'URL of the origin of the event.',
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),
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'referer' => array(
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'type' => 'text',
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'not null' => FALSE,
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'description' => 'URL of referring page.',
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),
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'hostname' => array(
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'type' => 'varchar',
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'length' => 128,
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'not null' => TRUE,
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'default' => '',
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'description' => 'Hostname of the user who triggered the event.',
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),
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'timestamp' => array(
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'type' => 'int',
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'not null' => TRUE,
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'default' => 0,
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'description' => 'Unix timestamp of when event occurred.',
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),
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),
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'primary key' => array('wid'),
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'indexes' => array(
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'type' => array('type'),
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'uid' => array('uid'),
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'severity' => array('severity'),
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),
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);
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return $schema;
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}
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/**
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* Implements hook_uninstall().
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*/
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function dblog_uninstall() {
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variable_del('dblog_row_limit');
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}
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/**
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* @addtogroup updates-6.x-to-7.x
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* @{
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*/
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/**
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* Update the {watchdog} table.
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*/
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function dblog_update_7001() {
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// Allow NULL values for links.
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db_change_field('watchdog', 'link', 'link', array(
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'type' => 'varchar',
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'length' => 255,
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'not null' => FALSE,
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'default' => '',
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'description' => 'Link to view the result of the event.',
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));
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// Add an index on uid.
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db_add_index('watchdog', 'uid', array('uid'));
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// Allow longer type values.
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db_change_field('watchdog', 'type', 'type', array(
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'type' => 'varchar',
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'length' => 64,
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'not null' => TRUE,
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'default' => '',
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'description' => 'Type of log message, for example "user" or "page not found."',
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));
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// Convert the variables field (that stores serialized variables) from text to blob.
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db_change_field('watchdog', 'variables', 'variables', array(
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'type' => 'blob',
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'not null' => TRUE,
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'size' => 'big',
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'description' => 'Serialized array of variables that match the message string and that is passed into the t() function.',
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));
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}
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/**
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* @} End of "addtogroup updates-6.x-to-7.x".
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*/
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/**
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* @addtogroup updates-7.x-extra
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* @{
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*/
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/**
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* Add an index to the severity column in the watchdog database table.
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*/
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function dblog_update_7002() {
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db_add_index('watchdog', 'severity', array('severity'));
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}
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/**
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* Account for possible legacy systems where dblog was not installed.
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*/
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function dblog_update_7003() {
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if (!db_table_exists('watchdog')) {
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db_create_table('watchdog', drupal_get_schema_unprocessed('dblog', 'watchdog'));
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}
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}
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/**
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* @} End of "addtogroup updates-7.x-extra".
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*/
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