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<?php
use MediaWiki\MainConfigSchema;
use MediaWiki\Maintenance\Maintenance;
use MediaWiki\Settings\Config\ConfigSchemaAggregator;
use MediaWiki\Settings\Source\ReflectionSchemaSource;
use Symfony\Component\Yaml\Yaml;
use Wikimedia\StaticArrayWriter;
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// Tell Setup.php to load the config schema from MainConfigSchema rather than
// any generated file, so we can use this script to re-generate a broken schema file.
define( 'MW_USE_CONFIG_SCHEMA_CLASS', 1 );
// @codeCoverageIgnoreEnd
/**
* Maintenance script that generates configuration schema files:
* - includes/MainConfigNames.php: name constants for config settings
* - docs/config-vars.php: dummy variable declarations for config settings
* - includes/config-schema.php: an optimized config schema for use by Setup.php
* - docs/config-schema.yaml: a JSON Schema of the config settings
*
* @ingroup Maintenance
*/
class GenerateConfigSchema extends Maintenance {
private const DEFAULT_NAMES_PATH = __DIR__ . '/../includes/MainConfigNames.php';
private const DEFAULT_VARS_PATH = __DIR__ . '/../docs/config-vars.php';
private const DEFAULT_ARRAY_PATH = __DIR__ . '/../includes/config-schema.php';
private const DEFAULT_SCHEMA_PATH = __DIR__ . '/../docs/config-schema.yaml';
private const STDOUT = 'php://stdout';
/** @var array */
private $settingsArray;
public function __construct() {
parent::__construct();
$this->addDescription( 'Generates various config schema files.' );
$this->addOption(
'vars',
'Path to output variable stubs to. ' .
'Default if none of the options is given: ' .
self::DEFAULT_VARS_PATH,
false,
true
);
$this->addOption(
'schema',
'Path to output the schema array to. ' .
'Default if none of the options is given: ' .
self::DEFAULT_ARRAY_PATH,
false,
true
);
$this->addOption(
'names',
'Path to output the name constants to. ' .
'Default if none of the options is given: ' .
self::DEFAULT_NAMES_PATH,
false,
true
);
$this->addOption(
'yaml',
'Path to output the schema YAML to. ' .
'Default if none of the options is given: ' .
self::DEFAULT_SCHEMA_PATH,
false,
true
);
}
public function canExecuteWithoutLocalSettings(): bool {
return true;
}
/** @inheritDoc */
public function getDbType() {
return self::DB_NONE;
}
/**
* Loads the config schema from the MainConfigSchema class.
*
* @return array An associative array with a single key, 'config-schema',
* containing the config schema definition.
*/
private function getSettings(): array {
if ( !$this->settingsArray ) {
$source = new ReflectionSchemaSource( MainConfigSchema::class, true );
$this->settingsArray = $source->load();
}
return $this->settingsArray;
}
/**
* @param string $path
* @param string $content
*/
private function writeOutput( $path, $content ) {
// ensure a single line break at the end of the file
$content = trim( $content ) . "\n";
file_put_contents( $path, $content );
}
/**
* @param string $name The name of the option
*
* @return ?string
*/
private function getOutputPath( string $name ): ?string {
$outputPath = $this->getOption( $name );
if ( $outputPath === '-' ) {
$outputPath = self::STDOUT;
}
return $outputPath;
}
public function execute() {
$settings = $this->getSettings();
$allSchemas = $settings['config-schema'];
$obsolete = $settings['obsolete-config'] ?? [];
$schemaPath = $this->getOutputPath( 'schema' );
$varsPath = $this->getOutputPath( 'vars' );
$yamlPath = $this->getOutputPath( 'yaml' );
$namesPath = $this->getOutputPath( 'names' );
if ( $schemaPath === null && $varsPath === null &&
$yamlPath === null && $namesPath === null
) {
// If no output path is specified explicitly, use the default path for all.
$schemaPath = self::DEFAULT_ARRAY_PATH;
$varsPath = self::DEFAULT_VARS_PATH;
$yamlPath = self::DEFAULT_SCHEMA_PATH;
$namesPath = self::DEFAULT_NAMES_PATH;
}
if ( $schemaPath === self::STDOUT || $varsPath === self::STDOUT ||
$yamlPath === self::STDOUT || $namesPath === self::STDOUT
) {
// If any of the output is stdout, switch to quiet mode.
$this->mQuiet = true;
}
if ( $schemaPath !== null ) {
$this->output( "Writing schema array to $schemaPath\n" );
$this->writeOutput( $schemaPath, $this->generateSchemaArray( $allSchemas, $obsolete ) );
}
if ( $varsPath !== null ) {
$this->output( "Writing variable stubs to $varsPath\n" );
$this->writeOutput( $varsPath, $this->generateVariableStubs( $allSchemas ) );
}
if ( $yamlPath !== null ) {
$this->output( "Writing schema YAML to $yamlPath\n" );
$this->writeOutput( $yamlPath, $this->generateSchemaYaml( $allSchemas ) );
}
if ( $namesPath !== null ) {
$this->output( "Writing name constants to $namesPath\n" );
$this->writeOutput( $namesPath, $this->generateNames( $allSchemas ) );
}
}
public function generateSchemaArray( array $allSchemas, array $obsolete ): string {
$aggregator = new ConfigSchemaAggregator();
foreach ( $allSchemas as $key => $schema ) {
$aggregator->addSchema( $key, $schema );
}
$schemaInverse = [
'default' => $aggregator->getDefaults(),
'type' => $aggregator->getTypes(),
'mergeStrategy' => $aggregator->getMergeStrategyNames(),
'dynamicDefault' => $aggregator->getDynamicDefaults(),
];
$keyMask = array_flip( [
'default',
'type',
'mergeStrategy',
'dynamicDefault',
'description',
'properties'
] );
$schemaExtra = [];
foreach ( $aggregator->getDefinedKeys() as $key ) {
$sch = $aggregator->getSchemaFor( $key );
$sch = array_diff_key( $sch, $keyMask );
if ( $sch ) {
$schemaExtra[ $key ] = $sch;
}
}
$content = ( new StaticArrayWriter() )->write(
[
'config-schema-inverse' => $schemaInverse,
'config-schema' => $schemaExtra,
'obsolete-config' => $obsolete
],
"This file is automatically generated using maintenance/generateConfigSchema.php.\n" .
"Do not modify this file manually, edit includes/MainConfigSchema.php instead.\n" .
"phpcs:disable Generic.Files.LineLength"
);
return $content;
}
public function generateNames( array $allSchemas ): string {
$code = "<?php\n";
$code .= "/**\n" .
" * This file is automatically generated using maintenance/generateConfigSchema.php.\n" .
" * Do not modify this file manually, edit includes/MainConfigSchema.php instead.\n" .
" * @file\n" .
" * @ingroup Config\n" .
" */\n\n";
$code .= "// phpcs:disable Generic.NamingConventions.UpperCaseConstantName.ClassConstantNotUpperCase\n";
$code .= "// phpcs:disable Generic.Files.LineLength.TooLong\n";
$code .= "namespace MediaWiki;\n\n";
$code .= "/**\n" .
" * A class containing constants representing the names of configuration variables.\n" .
" * These constants can be used in calls to Config::get() or with ServiceOptions,\n" .
" * to protect against typos and to make it easier to discover documentation about\n" .
" * the respective config setting.\n" .
" *\n" .
" * @note this class is generated automatically by maintenance/generateConfigSchema.php\n" .
" * @since 1.39\n" .
" */\n";
$code .= "class MainConfigNames {\n";
// Details about each config variable
foreach ( $allSchemas as $configKey => $configSchema ) {
$code .= "\n";
$code .= $this->getConstantDeclaration( $configKey, $configSchema );
}
$code .= "\n}\n";
return $code;
}
/**
* @param string $name
* @param array $schema
*
* @return string
*/
private function getConstantDeclaration( string $name, array $schema ): string {
$chunks = [];
$chunks[] = "Name constant for the $name setting, for use with Config::get()";
$chunks[] = "@see MainConfigSchema::$name";
if ( isset( $schema['since'] ) ) {
$chunks[] = "@since {$schema['since']}";
}
if ( isset( $schema['deprecated'] ) ) {
$deprecated = str_replace( "\n", "\n\t * ", wordwrap( $schema['deprecated'] ) );
$chunks[] = "@deprecated {$deprecated}";
}
$code = "\t/**\n\t * ";
$code .= implode( "\n\t * ", $chunks );
$code .= "\n\t */\n";
$code .= "\tpublic const $name = '$name';\n";
return $code;
}
public function generateSchemaYaml( array $allSchemas ): string {
foreach ( $allSchemas as &$sch ) {
// Cast empty arrays to objects if they are declared to be of type object.
// This ensures they get represented in yaml as {} rather than [].
if ( isset( $sch['default'] ) && isset( $sch['type'] ) ) {
$types = (array)$sch['type'];
if ( $sch['default'] === [] && in_array( 'object', $types ) ) {
$sch['default'] = new stdClass();
}
}
// Wrap long deprecation messages
if ( isset( $sch['deprecated'] ) ) {
$sch['deprecated'] = wordwrap( $sch['deprecated'] );
}
}
// Dynamic defaults are not relevant to yaml consumers
unset( $sch['dynamicDefault'] );
$yamlFlags = Yaml::DUMP_OBJECT_AS_MAP
| Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK
| Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE;
$array = [ 'config-schema' => $allSchemas ];
$yaml = Yaml::dump( $array, 4, 4, $yamlFlags );
$header = "# This file is automatically generated using maintenance/generateConfigSchema.php.\n";
$header .= "# Do not modify this file manually, edit includes/MainConfigSchema.php instead.\n";
return $header . $yaml;
}
public function generateVariableStubs( array $allSchemas ): string {
$content = "<?php\n";
$content .= "/**\n" .
" * This file is automatically generated using maintenance/generateConfigSchema.php.\n" .
" * Do not modify this file manually, edit includes/MainConfigSchema.php instead.\n" .
" */\n";
$content .= "// phpcs:disable\n";
$content .= "throw new LogicException( 'Do not load config-vars.php, " .
"it exists as a documentation stub only' );\n";
foreach ( $allSchemas as $name => $schema ) {
$content .= "\n";
$content .= $this->getVariableDeclaration( $name, $schema );
}
return $content;
}
/**
* @param string $name
* @param array $schema
*
* @return string
*/
private function getVariableDeclaration( string $name, array $schema ): string {
$chunks = [];
$chunks[] = "Config variable stub for the $name setting, for use by phpdoc and IDEs.";
$chunks[] = "@see MediaWiki\\MainConfigSchema::$name";
if ( isset( $schema['since'] ) ) {
$chunks[] = "@since {$schema['since']}";
}
if ( isset( $schema['deprecated'] ) ) {
$deprecated = str_replace( "\n", "\n * ", wordwrap( $schema['deprecated'] ) );
$chunks[] = "@deprecated {$deprecated}";
}
$code = "/**\n * ";
$code .= implode( "\n * ", $chunks );
$code .= "\n */\n";
$code .= "\$wg{$name} = null;\n";
return $code;
}
}
// @codeCoverageIgnoreStart
$maintClass = GenerateConfigSchema::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd