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Code Issues Releases Wiki Activity

[ticket/11880] Break up schema changes in the migrator

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PHPBB3-11880
This commit is contained in:
Nathan Guse
2014-02-03 15:06:43 -06:00
parent 2cc6d03cca
commit 2c878ead31
4 changed files with 302 additions and 21 deletions
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107
phpBB/phpbb/db/migrator.php
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@@ -83,6 +83,8 @@ class migrator
$this->tools[$tool->get_name()] = $tool;
}
$this->tools['dbtools'] = $this->db_tools;
$this->load_migration_state();
}
@@ -229,9 +231,12 @@ class migrator
if (!$state['migration_schema_done'])
{
$this->last_run_migration['task'] = 'apply_schema_changes';
$this->apply_schema_changes($migration->update_schema());
$state['migration_schema_done'] = true;
$this->last_run_migration['task'] = 'process_schema_step';
$steps = self::get_schema_steps($migration->update_schema());
$result = $this->process_data_step($steps, $state['migration_data_state']);
$state['migration_data_state'] = ($result === true) ? '' : $result;
$state['migration_schema_done'] = ($result === true);
}
else if (!$state['migration_data_done'])
{
@@ -329,32 +334,27 @@ class migrator
$this->set_migration_state($name, $state);
}
else
else if ($state['migration_schema_done'])
{
$this->apply_schema_changes($migration->revert_schema());
$steps = self::get_schema_steps($migration->revert_schema());
$result = $this->process_data_step($steps, $state['migration_data_state']);
$sql = 'DELETE FROM ' . $this->migrations_table . "
WHERE migration_name = '" . $this->db->sql_escape($name) . "'";
$this->db->sql_query($sql);
$state['migration_data_state'] = ($result === true) ? '' : $result;
$state['migration_schema_done'] = ($result === true) ? false : true;
unset($this->migration_state[$name]);
if (!$state['migration_schema_done'])
{
$sql = 'DELETE FROM ' . $this->migrations_table . "
WHERE migration_name = '" . $this->db->sql_escape($name) . "'";
$this->db->sql_query($sql);
unset($this->migration_state[$name]);
}
}
return true;
}
/**
* Apply schema changes from a migration
*
* Just calls db_tools->perform_schema_changes
*
* @param array $schema_changes from migration
*/
protected function apply_schema_changes($schema_changes)
{
$this->db_tools->perform_schema_changes($schema_changes);
}
/**
* Process the data step of the migration
*
@@ -498,6 +498,7 @@ class migrator
return $this->get_callable_from_step($step);
break;
case 'custom':
if (!is_callable($parameters[0]))
{
@@ -749,4 +750,68 @@ class migrator
return $this->migrations;
}
/**
* Get the schema steps from an array of schema changes
*
* This splits up $schema_changes into individual changes so that the
* changes can be chunked
*
* @param array $schema_changes from migration
* @return array
*/
static public function get_schema_steps($schema_changes)
{
$steps = array();
// Nested level of data (only supports 1/2 currently)
$nested_level = array(
'drop_tables' => 1,
'add_tables' => 1,
'change_columns' => 2,
'add_columns' => 2,
'drop_keys' => 2,
'drop_columns' => 2,
'add_primary_keys' => 2, // perform_schema_changes only uses one level, but second is in the function
'add_unique_index' => 2,
'add_index' => 2,
);
foreach ($nested_level as $change_type => $data_depth)
{
if (!empty($schema_changes[$change_type]))
{
foreach ($schema_changes[$change_type] as $key => $value)
{
if ($data_depth === 1)
{
$steps[] = array(
'dbtools.perform_schema_changes', array(array(
$change_type => array(
$value,
),
)),
);
}
else if ($data_depth === 2)
{
foreach ($value as $key2 => $value2)
{
$steps[] = array(
'dbtools.perform_schema_changes', array(array(
$change_type => array(
$key => array(
$key2 => $value2,
),
),
)),
);
}
}
}
}
}
return $steps;
}
}