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| 1 | <?php |
| 2 | /** |
| 3 | * Hooks for EventLogging extension. |
| 4 | * |
| 5 | * @file |
| 6 | * |
| 7 | * @ingroup Extensions |
| 8 | * @ingroup EventLogging |
| 9 | * |
| 10 | * @author Ori Livneh <ori@wikimedia.org> |
| 11 | */ |
| 12 | |
| 13 | namespace MediaWiki\Extension\EventLogging; |
| 14 | |
| 15 | use ExtensionRegistry; |
| 16 | use MediaWiki\Config\Config; |
| 17 | use MediaWiki\Hook\BeforePageDisplayHook; |
| 18 | use MediaWiki\Hook\CanonicalNamespacesHook; |
| 19 | use MediaWiki\MediaWikiServices; |
| 20 | use MediaWiki\Output\OutputPage; |
| 21 | use MediaWiki\Preferences\Hook\GetPreferencesHook; |
| 22 | use MediaWiki\ResourceLoader as RL; |
| 23 | use MediaWiki\User\User; |
| 24 | use Skin; |
| 25 | |
| 26 | class Hooks implements |
| 27 | CanonicalNamespacesHook, |
| 28 | BeforePageDisplayHook, |
| 29 | GetPreferencesHook |
| 30 | { |
| 31 | |
| 32 | /** |
| 33 | * The list of stream config settings that should be sent to the client as part of the |
| 34 | * ext.eventLogging RL module. |
| 35 | * |
| 36 | * @var string[] |
| 37 | */ |
| 38 | private const STREAM_CONFIG_SETTINGS_ALLOWLIST = [ |
| 39 | 'sample', |
| 40 | 'producers', |
| 41 | ]; |
| 42 | |
| 43 | /** |
| 44 | * Emit a debug log message for each invalid or unset |
| 45 | * configuration variable (if any). |
| 46 | */ |
| 47 | public static function onSetup(): void { |
| 48 | global $wgEventLoggingBaseUri, $wgEventLoggingStreamNames; |
| 49 | |
| 50 | if ( $wgEventLoggingBaseUri === false ) { |
| 51 | EventLogging::getLogger()->debug( 'wgEventLoggingBaseUri has not been configured.' ); |
| 52 | } |
| 53 | |
| 54 | if ( $wgEventLoggingStreamNames !== false && !is_array( $wgEventLoggingStreamNames ) ) { |
| 55 | EventLogging::getLogger()->debug( |
| 56 | 'wgEventLoggingStreamNames is configured but is not a list of stream names' |
| 57 | ); |
| 58 | |
| 59 | $wgEventLoggingStreamNames = []; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @param OutputPage $out |
| 65 | * @param Skin $skin |
| 66 | */ |
| 67 | public function onBeforePageDisplay( $out, $skin ): void { |
| 68 | $out->addModules( [ 'ext.eventLogging' ] ); |
| 69 | |
| 70 | $services = MediaWikiServices::getInstance(); |
| 71 | $lookup = $services->getUserOptionsLookup(); |
| 72 | if ( $lookup->getIntOption( $out->getUser(), 'eventlogging-display-web' ) |
| 73 | || $lookup->getIntOption( $out->getUser(), 'eventlogging-display-console' ) |
| 74 | ) { |
| 75 | $out->addModules( 'ext.eventLogging.debug' ); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Return all schemas registered in extension.json EventLoggingSchemas and |
| 81 | * PHP $wgEventLoggingSchemas. The returned array will map from schema name |
| 82 | * to either MediaWiki (metawiki) revision id, or to a relative schema URI |
| 83 | * for forward compatibility with Event Platform. |
| 84 | * TODO: what happens when two extensions register the same schema with a different revision? |
| 85 | * |
| 86 | * @return array |
| 87 | */ |
| 88 | private static function getSchemas() { |
| 89 | global $wgEventLoggingSchemas; |
| 90 | |
| 91 | $extRegistry = ExtensionRegistry::getInstance(); |
| 92 | $schemas = $wgEventLoggingSchemas + $extRegistry->getAttribute( 'EventLoggingSchemas' ); |
| 93 | |
| 94 | return $schemas; |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Returns an object with EventLogging specific configuration extracted from |
| 99 | * MW Config and from extension attributes. |
| 100 | * |
| 101 | * @param Config $config |
| 102 | * @return array |
| 103 | */ |
| 104 | public static function getEventLoggingConfig( Config $config ) { |
| 105 | return [ |
| 106 | 'baseUrl' => $config->get( 'EventLoggingBaseUri' ), |
| 107 | 'schemasInfo' => self::getSchemas(), |
| 108 | 'serviceUri' => $config->get( 'EventLoggingServiceUri' ), |
| 109 | 'queueLingerSeconds' => $config->get( 'EventLoggingQueueLingerSeconds' ), |
| 110 | // If this is false, EventLogging will not use stream config. |
| 111 | 'streamConfigs' => self::loadEventStreamConfigs() |
| 112 | ]; |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Wraps getEventLoggingConfig for use with ResourceLoader. |
| 117 | * |
| 118 | * @param RL\Context $context |
| 119 | * @param Config $config |
| 120 | * @return array |
| 121 | */ |
| 122 | public static function getModuleData( RL\Context $context, Config $config ) { |
| 123 | return self::getEventLoggingConfig( $config ); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * @param User $user |
| 128 | * @param array &$preferences |
| 129 | */ |
| 130 | public function onGetPreferences( $user, &$preferences ): void { |
| 131 | // See 'ext.eventLogging.debug' module. |
| 132 | $preferences['eventlogging-display-web'] = [ |
| 133 | 'type' => 'api', |
| 134 | ]; |
| 135 | $preferences['eventlogging-display-console'] = [ |
| 136 | 'type' => 'api', |
| 137 | ]; |
| 138 | } |
| 139 | |
| 140 | public function onCanonicalNamespaces( &$namespaces ): void { |
| 141 | if ( JsonSchemaHooks::isSchemaNamespaceEnabled() ) { |
| 142 | $namespaces[ NS_SCHEMA ] = 'Schema'; |
| 143 | $namespaces[ NS_SCHEMA_TALK ] = 'Schema_talk'; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Uses the EventStreamConfig extension to return a stream configs map |
| 149 | * (stream name -> config). The target stream configs to export are |
| 150 | * selected using the $wgEventLoggingStreamNames MW config variable. |
| 151 | * This is expected to be a list of stream names that are defined |
| 152 | * in $wgEventStreams. |
| 153 | * |
| 154 | * EventLogging uses this within the ./data.json data file |
| 155 | * from which it loads and configures all of the streams and stream |
| 156 | * configs to which it is allowed to submit events. |
| 157 | * |
| 158 | * This function returns an array mapping explicit stream names |
| 159 | * to their configurations. |
| 160 | * |
| 161 | * NOTE: We need a list of target streams to get configs for. |
| 162 | * $wgEventStreams may not explicitly define all stream names; |
| 163 | * it supports matching stream names by regexes. We need to |
| 164 | * give the EventStreamConfig StreamConfigs->get function |
| 165 | * a list of streams to search for in $wgEventStreams. |
| 166 | * $wgEventLoggingStreamNames is that list. |
| 167 | * |
| 168 | * @return array|bool Selected stream name -> stream configs |
| 169 | */ |
| 170 | private static function loadEventStreamConfigs() { |
| 171 | // FIXME: Does the following need to be logged? |
| 172 | if ( !ExtensionRegistry::getInstance()->isLoaded( 'EventStreamConfig' ) ) { |
| 173 | EventLogging::getLogger()->debug( 'EventStreamConfig is not installed' ); |
| 174 | return false; |
| 175 | } |
| 176 | |
| 177 | $streamConfigs = MediaWikiServices::getInstance()->getService( 'EventLogging.StreamConfigs' ); |
| 178 | |
| 179 | if ( $streamConfigs === false ) { |
| 180 | return false; |
| 181 | } |
| 182 | |
| 183 | // Only send stream config settings that should be sent to the client as part of the |
| 184 | // ext.eventLogging RL module. |
| 185 | $settingsAllowList = array_flip( self::STREAM_CONFIG_SETTINGS_ALLOWLIST ); |
| 186 | |
| 187 | return array_map( |
| 188 | static function ( $streamConfig ) use ( $settingsAllowList ) { |
| 189 | return array_intersect_key( $streamConfig, $settingsAllowList ); |
| 190 | }, |
| 191 | $streamConfigs |
| 192 | ); |
| 193 | } |
| 194 | } |