Request handler implementing a linked data interface for Wikibase entities. More...

Public Member Functions
	__construct (EntityDataUriManager $uriManager, HtmlCacheUpdater $htmlCacheUpdater, EntityIdParser $entityIdParser, EntityRevisionLookup $entityRevisionLookup, EntityRedirectLookup $entityRedirectLookup, EntityDataSerializationService $serializationService, EntityDataFormatProvider $entityDataFormatProvider, LoggerInterface $logger, array $entityTypesWithoutRdfOutput, $defaultFormat, $maxAge, $useCdn, $frameOptionsHeader, SubEntityTypesMapper $subEntityTypesMap)

	canHandleRequest ( $doc, WebRequest $request)
	Checks whether the request is complete, i.e.

	handleRequest ( $doc, WebRequest $request, OutputPage $output)
	Main method for handling requests.

	getCanonicalFormat ( $format)
	Returns the canonical format name for the given format.

	purgeWebCache (EntityId $id, int $revision)
	Purges the entity data identified by the doc parameter from any HTTP caches.

	httpContentNegotiation (WebRequest $request, OutputPage $output, EntityId $id, $revision=0)
	Applies HTTP content negotiation.

	outputData (WebRequest $request, EntityId $requestId, int $requestRevision, WebResponse $response, string $data, string $contentType, string $lastModified)
	Output the entity data and set the appropriate HTTP response headers.

Private Member Functions
	getEntityRevision (EntityId $id, $revision, $allowRedirects=false)
	Loads the requested Entity.

	validateRedirectability (EntityId $id, EntityId $redirectTargetId)

	getIncomingRedirects (EntityId $id)
	Loads incoming redirects referring to the given entity ID.

Private Attributes
const	MINIMUM_MAX_AGE = 0
	Allowed smallest and biggest number of seconds for the "max-age=..." and "s-maxage=..." cache control parameters.

const	MAXIMUM_MAX_AGE = 2678400

	$serializationService

	$uriManager

	$entityIdParser

	$entityRevisionLookup

	$entityRedirectLookup

	$entityDataFormatProvider

	$htmlCacheUpdater

	$logger

	$defaultFormat

	$maxAge

	$useCdn

	$frameOptionsHeader

	$entityTypesWithoutRdfOutput

	$subEntityTypesMap

Detailed Description

Request handler implementing a linked data interface for Wikibase entities.

Copyright: GPL-2.0-or-later

Author: Daniel Kinzler; Thomas Pellissier Tanon; Anja Jentzsch < anja..nosp@m.jent.nosp@m.zsch@.nosp@m.wiki.nosp@m.media.nosp@m..de >

Constructor & Destructor Documentation

◆ __construct()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::__construct	(	EntityDataUriManager	$uriManager,
		HtmlCacheUpdater	$htmlCacheUpdater,
		EntityIdParser	$entityIdParser,
		EntityRevisionLookup	$entityRevisionLookup,
		EntityRedirectLookup	$entityRedirectLookup,
		EntityDataSerializationService	$serializationService,
		EntityDataFormatProvider	$entityDataFormatProvider,
		LoggerInterface	$logger,
		array	$entityTypesWithoutRdfOutput,
			$defaultFormat,
			$maxAge,
			$useCdn,
			$frameOptionsHeader,
		SubEntityTypesMapper	$subEntityTypesMap )

Parameters

EntityDataUriManager	$uriManager
HtmlCacheUpdater	$htmlCacheUpdater
EntityIdParser	$entityIdParser
EntityRevisionLookup	$entityRevisionLookup
EntityRedirectLookup	$entityRedirectLookup
EntityDataSerializationService	$serializationService
EntityDataFormatProvider	$entityDataFormatProvider
LoggerInterface	$logger
string[]	$entityTypesWithoutRdfOutput
string	$defaultFormat	The format as a file extension or MIME type.
int	$maxAge	number of seconds to cache entity data
bool	$useCdn	do we have web caches configured?
string \| null	$frameOptionsHeader	for X-Frame-Options
SubEntityTypesMapper	$subEntityTypesMap

Member Function Documentation

◆ canHandleRequest()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::canHandleRequest	(		$doc,
		WebRequest	$request )

Checks whether the request is complete, i.e.

whether it contains all information needed to reply with entity data.

This does not check whether the request is valid and will actually produce a successful response.

Parameters

string \| null	$doc	Document name, e.g. Q5 or Q5.json or Q5:33.xml
WebRequest	$request

Returns: bool

◆ getCanonicalFormat()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::getCanonicalFormat ( $format )

Returns the canonical format name for the given format.

Parameters

string $format

Returns: string

Exceptions

HttpError code 415 if the format is not supported.

◆ getEntityRevision()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::getEntityRevision	(	EntityId	$id,
			$revision,
			$allowRedirects = false )

private

Loads the requested Entity.

Redirects are resolved if no specific revision is requested or they are explicitly allowed by $allowRedirects.

Parameters

EntityId	$id
int	$revision	The revision ID (use 0 for the current revision).
bool	$allowRedirects	Can we fetch redirects when revision is set?

Returns: array list( EntityRevision, RedirectRevision|null )

Exceptions

HttpError

◆ getIncomingRedirects()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::getIncomingRedirects ( EntityId $id )

private

Loads incoming redirects referring to the given entity ID.

Parameters

EntityId $id

Returns: EntityId[]

Exceptions

HttpError

◆ handleRequest()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::handleRequest	(		$doc,
		WebRequest	$request,
		OutputPage	$output )

Main method for handling requests.

Parameters

string	$doc	Document name, e.g. Q5 or Q5.json or Q5:33.xml
WebRequest	$request	The request parameters. Known parameters are: id: the entity ID format: the format oldid\|revision: the revision ID action=purge: to purge cached data from (web) caches
OutputPage	$output

Note: Instead of an output page, a WebResponse could be sufficient, but redirect logic is currently implemented in OutputPage.

Exceptions

HttpError

◆ httpContentNegotiation()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::httpContentNegotiation	(	WebRequest	$request,
		OutputPage	$output,
		EntityId	$id,
			$revision = 0 )

Applies HTTP content negotiation.

If the negotiation is successful, this method will set the appropriate redirect in the OutputPage object and return. Otherwise, an HttpError is thrown.

Parameters

WebRequest	$request
OutputPage	$output
EntityId	$id	The ID of the entity to show
int	$revision	The desired revision

Exceptions

HttpError

◆ outputData()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::outputData	(	WebRequest	$request,
		EntityId	$requestId,
		int	$requestRevision,
		WebResponse	$response,
		string	$data,
		string	$contentType,
		string	$lastModified )

Output the entity data and set the appropriate HTTP response headers.

Parameters

WebRequest	$request
EntityId	$requestId	The original entity ID of the request
int	$requestRevision	The original revision ID of the request (0 for latest)
WebResponse	$response
string	$data	The data to output
string	$contentType	The data's mime type
string	$lastModified

◆ purgeWebCache()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::purgeWebCache	(	EntityId	$id,
		int	$revision )

Purges the entity data identified by the doc parameter from any HTTP caches.

Does nothing if $wgUseCdn is not set.

Parameters

EntityId	$id	The entity ID for which to purge all data.
int	$revision	The revision ID (0 for current/unspecified)

◆ validateRedirectability()

Wikibase\Repo\LinkedData\EntityDataRequestHandler::validateRedirectability	(	EntityId	$id,
		EntityId	$redirectTargetId )

private

Member Data Documentation

◆ $defaultFormat

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$defaultFormat

private

◆ $entityDataFormatProvider

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$entityDataFormatProvider

private

◆ $entityIdParser

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$entityIdParser

private

◆ $entityRedirectLookup

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$entityRedirectLookup

private

◆ $entityRevisionLookup

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$entityRevisionLookup

private

◆ $entityTypesWithoutRdfOutput

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$entityTypesWithoutRdfOutput

private

◆ $frameOptionsHeader

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$frameOptionsHeader

private

◆ $htmlCacheUpdater

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$htmlCacheUpdater

private

◆ $logger

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$logger

private

◆ $maxAge

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$maxAge

private

◆ $serializationService

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$serializationService

private

◆ $subEntityTypesMap

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$subEntityTypesMap

private

◆ $uriManager

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$uriManager

private

◆ $useCdn

Wikibase\Repo\LinkedData\EntityDataRequestHandler::$useCdn

private

◆ MAXIMUM_MAX_AGE

const Wikibase\Repo\LinkedData\EntityDataRequestHandler::MAXIMUM_MAX_AGE = 2678400

private

◆ MINIMUM_MAX_AGE

const Wikibase\Repo\LinkedData\EntityDataRequestHandler::MINIMUM_MAX_AGE = 0

private

Allowed smallest and biggest number of seconds for the "max-age=..." and "s-maxage=..." cache control parameters.

Todo: Hard maximum could be configurable somehow.

The documentation for this class was generated from the following file:

repo/includes/LinkedData/EntityDataRequestHandler.php

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ canHandleRequest()

◆ getCanonicalFormat()

◆ getEntityRevision()

◆ getIncomingRedirects()

◆ handleRequest()

◆ httpContentNegotiation()

◆ outputData()

◆ purgeWebCache()

◆ validateRedirectability()

Member Data Documentation

◆ $defaultFormat

◆ $entityDataFormatProvider

◆ $entityIdParser

◆ $entityRedirectLookup

◆ $entityRevisionLookup

◆ $entityTypesWithoutRdfOutput

◆ $frameOptionsHeader

◆ $htmlCacheUpdater

◆ $logger

◆ $maxAge

◆ $serializationService

◆ $subEntityTypesMap

◆ $uriManager

◆ $useCdn

◆ MAXIMUM_MAX_AGE

◆ MINIMUM_MAX_AGE