MediaWiki\Rest\Handler Class Reference

Base class for REST route handlers. More...

Inheritance diagram for MediaWiki\Rest\Handler:

Collaboration diagram for MediaWiki\Rest\Handler:

Public Member Functions
	applyConditionalResponseHeaders (ResponseInterface $response)
	Modify the response, adding Last-Modified and ETag headers as indicated the values previously returned by ETag and getLastModified().
	checkPreconditions ()
	Check the conditional request headers and generate a response if appropriate.
	execute ()
	Execute the handler.
	getAuthority ()
	Get the current acting authority.
	getBodyValidator ( $contentType)
	Fetch the BodyValidator.
	getConfig ()
	Get the configuration array for the current route.
	getParamSettings ()
	Fetch ParamValidator settings for parameters.
	getRequest ()
	Get the current request.
	getResponseFactory ()
	Get the ResponseFactory which can be used to generate Response objects.
	getValidatedBody ()
	Fetch the validated body.
	getValidatedParams ()
	Fetch the validated parameters.
	init (Router $router, RequestInterface $request, array $config, Authority $authority, ResponseFactory $responseFactory, HookContainer $hookContainer)
	Initialise with dependencies from the Router.
	needsReadAccess ()
	Indicates whether this route requires read rights.
	needsWriteAccess ()
	Indicates whether this route requires write access.
	validate (Validator $restValidator)
	Validate the request parameters/attributes and body.

Public Attributes
const	PARAM_SOURCE = 'rest-param-source'
	(string) ParamValidator constant to specify the source of the parameter.

Protected Member Functions
	getConditionalHeaderUtil ()
	Get a ConditionalHeaderUtil object.
	getETag ()
	The subclass should override this to provide an ETag for the current request.
	getHookContainer ()
	Get a HookContainer, for running extension hooks or for hook metadata.
	getHookRunner ()
	Get a HookRunner for running core hooks.
	getLastModified ()
	The subclass should override this to provide the maximum last modified timestamp for the current request.
	getRouter ()
	Get the Router.
	getRouteUrl ( $pathParams=[], $queryParams=[])
	Get the URL of this handler's endpoint.
	hasRepresentation ()
	The subclass should override this to indicate whether the resource exists.
	postInitSetup ()
	The handler can override this to do any necessary setup after init() is called to inject the dependencies.
	postValidationSetup ()
	The handler can override this to do any necessary setup after validate() has been called.
	urlEncodeTitle ( $title)
	URL-encode titles in a "pretty" way.

Private Attributes
Authority	$authority
ConditionalHeaderUtil	$conditionalHeaderUtil
array	$config
HookContainer	$hookContainer
HookRunner	$hookRunner
RequestInterface	$request
ResponseFactory	$responseFactory
Router	$router
mixed	$validatedBody
array null	$validatedParams

Detailed Description

Base class for REST route handlers.

Stability: stable

to extend.

Definition at line 17 of file Handler.php.

Member Function Documentation

applyConditionalResponseHeaders()

MediaWiki\Rest\Handler::applyConditionalResponseHeaders

(

ResponseInterface

$response

)

Modify the response, adding Last-Modified and ETag headers as indicated the values previously returned by ETag and getLastModified().

This is called after execute() returns, and may be overridden.

Stability: stable

to override

Parameters

ResponseInterface

$response

Definition at line 240 of file Handler.php.

checkPreconditions()

MediaWiki\Rest\Handler::checkPreconditions

(

)

Check the conditional request headers and generate a response if appropriate.

This is called by the Router before execute() and may be overridden.

Stability: stable

to override

Returns

ResponseInterface|null

Definition at line 220 of file Handler.php.

execute()

MediaWiki\Rest\Handler::execute ( )

abstract

Execute the handler.

This is called after parameter validation. The return value can either be a Response or any type accepted by ResponseFactory::createFromReturnValue().

To automatically construct an error response, execute() should throw a \MediaWiki\Rest\HttpException. Such exceptions will not be logged like a normal exception.

If execute() throws any other kind of exception, the exception will be logged and a generic 500 error page will be shown.

Stability: stable

to override

Returns

mixed

Reimplemented in MediaWiki\Rest\Handler\ActionModuleBasedHandler, MediaWiki\Rest\Handler\CompareHandler, MediaWiki\Rest\Handler\ContributionsCountHandler, MediaWiki\Rest\Handler\SearchHandler, MediaWiki\Rest\Handler\UserContributionsHandler, and MediaWiki\Rest\SimpleHandler.

getAuthority()

MediaWiki\Rest\Handler::getAuthority

(

)

Get the current acting authority.

The return type declaration causes it to raise a fatal error if init() has not yet been called.

Since

1.36

Returns

Authority

Definition at line 148 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\SearchHandler\buildPageInfosFromSuggestions(), MediaWiki\Rest\Handler\CompareHandler\execute(), MediaWiki\Rest\Handler\ContributionsCountHandler\execute(), MediaWiki\Rest\Handler\UserContributionsHandler\execute(), MediaWiki\Rest\Handler\UpdateHandler\getConflictData(), MediaWiki\Rest\Handler\CompareHandler\getRevisionText(), MediaWiki\Rest\Handler\AbstractContributionHandler\getTargetUser(), MediaWiki\Rest\Handler\CompareHandler\isAccessible(), MediaWiki\Rest\Handler\PageHTMLHandler\postValidationSetup(), MediaWiki\Rest\Handler\PageSourceHandler\postValidationSetup(), MediaWiki\Rest\Handler\RevisionHTMLHandler\postValidationSetup(), MediaWiki\Rest\Handler\RevisionSourceHandler\postValidationSetup(), and MediaWiki\Rest\Handler\PageHistoryCountHandler\run().

getBodyValidator()

MediaWiki\Rest\Handler::getBodyValidator

(

$contentType

)

Fetch the BodyValidator.

Stability: stable

to override

Parameters

string

$contentType

Content type of the request.

Returns

BodyValidator

Reimplemented in MediaWiki\Rest\Handler\CreationHandler, and MediaWiki\Rest\Handler\UpdateHandler.

Definition at line 271 of file Handler.php.

Referenced by MediaWiki\Rest\Validator\Validator\validateBody().

getConditionalHeaderUtil()

MediaWiki\Rest\Handler::getConditionalHeaderUtil ( )

protected

Get a ConditionalHeaderUtil object.

On the first call to this method, the object will be initialized with validator values by calling getETag(), getLastModified() and hasRepresentation().

Returns

ConditionalHeaderUtil

Definition at line 200 of file Handler.php.

References MediaWiki\Rest\ConditionalHeaderUtil\setValidators().

getConfig()

MediaWiki\Rest\Handler::getConfig

(

)

Get the configuration array for the current route.

The return type declaration causes it to raise a fatal error if init() has not been called.

Returns

array

Definition at line 159 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\AbstractContributionHandler\postInitSetup(), and MediaWiki\Rest\Handler\SearchHandler\postInitSetup().

getETag()

MediaWiki\Rest\Handler::getETag ( )

protected

The subclass should override this to provide an ETag for the current request.

This is called before execute() in order to decide whether to send a 304.

This must be a complete ETag, including double quotes.

See RFC 7232 § 2.3 for semantics.

Stability: stable

to override

Returns

string|null

Reimplemented in MediaWiki\Rest\Handler\LanguageLinksHandler, MediaWiki\Rest\Handler\MediaFileHandler, MediaWiki\Rest\Handler\MediaLinksHandler, MediaWiki\Rest\Handler\PageHistoryHandler, MediaWiki\Rest\Handler\PageHTMLHandler, MediaWiki\Rest\Handler\PageSourceHandler, MediaWiki\Rest\Handler\RevisionHTMLHandler, and MediaWiki\Rest\Handler\RevisionSourceHandler.

Definition at line 349 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\RevisionSourceHandler\getETag().

getHookContainer()

MediaWiki\Rest\Handler::getHookContainer ( )

protected

Get a HookContainer, for running extension hooks or for hook metadata.

Since

1.35

Returns

HookContainer

Definition at line 304 of file Handler.php.

getHookRunner()

MediaWiki\Rest\Handler::getHookRunner ( )

protected

Get a HookRunner for running core hooks.

Access: internal

This is for use by core only. Hook interfaces may be removed without notice.

Since

1.35

Returns

HookRunner

Definition at line 316 of file Handler.php.

getLastModified()

MediaWiki\Rest\Handler::getLastModified ( )

protected

The subclass should override this to provide the maximum last modified timestamp for the current request.

This is called before execute() in order to decide whether to send a 304.

The timestamp can be in any format accepted by ConvertibleTimestamp, or null to indicate that the timestamp is unknown.

Stability: stable

to override

Returns

bool|string|int|float|\DateTime|null

Reimplemented in MediaWiki\Rest\Handler\LanguageLinksHandler, MediaWiki\Rest\Handler\MediaFileHandler, MediaWiki\Rest\Handler\MediaLinksHandler, MediaWiki\Rest\Handler\PageHistoryCountHandler, MediaWiki\Rest\Handler\PageHistoryHandler, MediaWiki\Rest\Handler\PageHTMLHandler, MediaWiki\Rest\Handler\PageSourceHandler, MediaWiki\Rest\Handler\RevisionHTMLHandler, and MediaWiki\Rest\Handler\RevisionSourceHandler.

Definition at line 332 of file Handler.php.

getParamSettings()

MediaWiki\Rest\Handler::getParamSettings

(

)

Fetch ParamValidator settings for parameters.

Every setting must include self::PARAM_SOURCE to specify which part of the request is to contain the parameter.

Can be used for validating parameters inside an application/x-www-form-urlencoded or multipart/form-data POST body (i.e. parameters which would be present in PHP's $_POST array). For validating other kinds of request bodies, override getBodyValidator().

Stability: stable

to override

Returns

array[] Associative array mapping parameter names to ParamValidator settings arrays

Reimplemented in MediaWiki\Rest\Handler\CompareHandler, MediaWiki\Rest\Handler\ContributionsCountHandler, MediaWiki\Rest\Handler\LanguageLinksHandler, MediaWiki\Rest\Handler\MediaFileHandler, MediaWiki\Rest\Handler\MediaLinksHandler, MediaWiki\Rest\Handler\PageHistoryCountHandler, MediaWiki\Rest\Handler\PageHistoryHandler, MediaWiki\Rest\Handler\PageHTMLHandler, MediaWiki\Rest\Handler\PageSourceHandler, MediaWiki\Rest\Handler\RevisionHTMLHandler, MediaWiki\Rest\Handler\RevisionSourceHandler, MediaWiki\Rest\Handler\SearchHandler, MediaWiki\Rest\Handler\UpdateHandler, and MediaWiki\Rest\Handler\UserContributionsHandler.

Definition at line 259 of file Handler.php.

Referenced by MediaWiki\Rest\SimpleHandler\execute().

getRequest()

MediaWiki\Rest\Handler::getRequest

(

)

Get the current request.

The return type declaration causes it to raise a fatal error if init() has not yet been called.

Returns

RequestInterface

Definition at line 137 of file Handler.php.

Referenced by MediaWiki\Rest\SimpleHandler\execute().

getResponseFactory()

MediaWiki\Rest\Handler::getResponseFactory

(

)

Get the ResponseFactory which can be used to generate Response objects.

This will raise a fatal error if init() has not been called.

Returns

ResponseFactory

Definition at line 170 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\ActionModuleBasedHandler\execute(), MediaWiki\Rest\Handler\CompareHandler\execute(), MediaWiki\Rest\Handler\LanguageLinksHandler\run(), MediaWiki\Rest\Handler\MediaLinksHandler\run(), MediaWiki\Rest\Handler\PageHistoryHandler\run(), MediaWiki\Rest\Handler\PageHistoryCountHandler\run(), and MediaWiki\Rest\Handler\RevisionSourceHandler\run().

getRouter()

MediaWiki\Rest\Handler::getRouter ( )

protected

Get the Router.

The return type declaration causes it to raise a fatal error if init() has not yet been called.

Returns

Router

Definition at line 86 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\CreationHandler\mapActionModuleResponse().

getRouteUrl()

MediaWiki\Rest\Handler::getRouteUrl (   $pathParams = [],   $queryParams = []  )

protected

Get the URL of this handler's endpoint.

Supports the substitution of path parameters, and additions of query parameters.

See also

Router::getRouteUrl()

Parameters

string[]	$pathParams	Path parameters to be injected into the path
string[]	$queryParams	Query parameters to be attached to the URL

Returns

string

Definition at line 101 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\PageHistoryHandler\processDbResults().

getValidatedBody()

MediaWiki\Rest\Handler::getValidatedBody

(

)

Fetch the validated body.

Returns

mixed Value returned by the body validator, or null if validate() was not called yet, validation failed, there was no body, or the body was form data.

Definition at line 294 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\CreationHandler\getActionModuleParameters(), MediaWiki\Rest\Handler\UpdateHandler\getActionModuleParameters(), MediaWiki\Rest\Handler\EditHandler\getActionModuleToken(), MediaWiki\Rest\Handler\UpdateHandler\getConflictData(), and MediaWiki\Rest\Handler\CreationHandler\getTitleParameter().

getValidatedParams()

MediaWiki\Rest\Handler::getValidatedParams

(

)

Fetch the validated parameters.

This must be called after validate() is called. During execute() is fine.

Returns

array Array mapping parameter names to validated values

Exceptions

\RuntimeException If validate() has not been called

Definition at line 282 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\UserContributionsHandler\constructURLs(), MediaWiki\Rest\Handler\SearchHandler\createSearchEngine(), MediaWiki\Rest\Handler\SearchHandler\doSearch(), MediaWiki\Rest\Handler\ContributionsCountHandler\execute(), MediaWiki\Rest\Handler\UserContributionsHandler\execute(), MediaWiki\Rest\SimpleHandler\execute(), MediaWiki\Rest\Handler\UpdateHandler\getConflictData(), MediaWiki\Rest\Handler\PageHistoryCountHandler\getCount(), MediaWiki\Rest\Handler\LanguageLinksHandler\getPage(), MediaWiki\Rest\Handler\MediaFileHandler\getPage(), MediaWiki\Rest\Handler\MediaLinksHandler\getPage(), MediaWiki\Rest\Handler\PageHistoryCountHandler\getPage(), MediaWiki\Rest\Handler\PageHistoryHandler\getPage(), MediaWiki\Rest\Handler\CompareHandler\getRevision(), MediaWiki\Rest\Handler\AbstractContributionHandler\getTargetUser(), MediaWiki\Rest\Handler\UpdateHandler\getTitleParameter(), MediaWiki\Rest\Handler\UpdateHandler\mapActionModuleResult(), MediaWiki\Rest\Handler\PageHTMLHandler\postValidationSetup(), MediaWiki\Rest\Handler\PageSourceHandler\postValidationSetup(), MediaWiki\Rest\Handler\RevisionHTMLHandler\postValidationSetup(), MediaWiki\Rest\Handler\RevisionSourceHandler\postValidationSetup(), MediaWiki\Rest\Handler\PageHistoryHandler\run(), and MediaWiki\Rest\Handler\PageHistoryCountHandler\validateParameterCombination().

hasRepresentation()

MediaWiki\Rest\Handler::hasRepresentation ( )

protected

The subclass should override this to indicate whether the resource exists.

This is used for wildcard validators, for example "If-Match: *" fails if the resource does not exist.

Stability: stable

to override

Returns

bool|null

Reimplemented in MediaWiki\Rest\Handler\LanguageLinksHandler, MediaWiki\Rest\Handler\MediaFileHandler, MediaWiki\Rest\Handler\MediaLinksHandler, MediaWiki\Rest\Handler\PageHistoryHandler, MediaWiki\Rest\Handler\PageSourceHandler, MediaWiki\Rest\Handler\RevisionHTMLHandler, and MediaWiki\Rest\Handler\RevisionSourceHandler.

Definition at line 362 of file Handler.php.

init()

MediaWiki\Rest\Handler::init ( Router  $router, RequestInterface  $request, array  $config, Authority  $authority, ResponseFactory  $responseFactory, HookContainer  $hookContainer  )

final

Initialise with dependencies from the Router.

This is called after construction.

Parameters

Router	$router
RequestInterface	$request
array	$config
Authority	$authority
ResponseFactory	$responseFactory
HookContainer	$hookContainer

Access: internal

Definition at line 68 of file Handler.php.

References MediaWiki\Rest\Handler\postInitSetup().

needsReadAccess()

MediaWiki\Rest\Handler::needsReadAccess

(

)

Indicates whether this route requires read rights.

The handler should override this if it does not need to read from the wiki. This is uncommon, but may be useful for login and other account management APIs.

Stability: stable

to override

Returns

bool

Definition at line 377 of file Handler.php.

needsWriteAccess()

MediaWiki\Rest\Handler::needsWriteAccess

(

)

Indicates whether this route requires write access.

The handler should override this if the route does not need to write to the database.

This should return true for routes that may require synchronous database writes. Modules that do not need such writes should also not rely on primary database access, since only read queries are needed and each primary DB is a single point of failure.

Stability: stable

to override

Returns

bool

Reimplemented in MediaWiki\Rest\Handler\EditHandler, MediaWiki\Rest\Handler\LanguageLinksHandler, MediaWiki\Rest\Handler\MediaFileHandler, MediaWiki\Rest\Handler\MediaLinksHandler, MediaWiki\Rest\Handler\PageHistoryCountHandler, MediaWiki\Rest\Handler\PageHistoryHandler, MediaWiki\Rest\Handler\PageHTMLHandler, MediaWiki\Rest\Handler\PageSourceHandler, MediaWiki\Rest\Handler\RevisionHTMLHandler, MediaWiki\Rest\Handler\RevisionSourceHandler, and MediaWiki\Rest\Handler\SearchHandler.

Definition at line 395 of file Handler.php.

Referenced by MediaWiki\Rest\CorsUtils\authorize().

postInitSetup()

MediaWiki\Rest\Handler::postInitSetup ( )

protected

The handler can override this to do any necessary setup after init() is called to inject the dependencies.

Stability: stable

to override

Reimplemented in MediaWiki\Rest\Handler\AbstractContributionHandler, and MediaWiki\Rest\Handler\SearchHandler.

Definition at line 405 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\init().

postValidationSetup()

MediaWiki\Rest\Handler::postValidationSetup ( )

protected

The handler can override this to do any necessary setup after validate() has been called.

This gives the handler an opportunity to do initialization based on parameters before pre-execution calls like getLastModified() or getETag().

Stability: stable

to override

Since

1.36

Reimplemented in MediaWiki\Rest\Handler\PageHTMLHandler, MediaWiki\Rest\Handler\PageSourceHandler, MediaWiki\Rest\Handler\RevisionHTMLHandler, and MediaWiki\Rest\Handler\RevisionSourceHandler.

Definition at line 416 of file Handler.php.

urlEncodeTitle()

MediaWiki\Rest\Handler::urlEncodeTitle (   $title )

protected

URL-encode titles in a "pretty" way.

Keeps intact ;$!*(),~: (urlencode does not, but wfUrlencode does). Encodes spaces as underscores (wfUrlencode does not). Encodes slashes (wfUrlencode does not, but keeping them messes with REST pathes). Encodes pluses (this is not necessary, and may change).

See also

wfUrlencode

Parameters

string

$title

Returns

string

Definition at line 120 of file Handler.php.

References $title.

Referenced by MediaWiki\Rest\Handler\CreationHandler\mapActionModuleResponse().

validate()

MediaWiki\Rest\Handler::validate

(

Validator

$restValidator

)

Validate the request parameters/attributes and body.

If there is a validation failure, a response with an error message should be returned or an HttpException should be thrown.

Stability: stable

to override

Parameters

Validator

$restValidator

Exceptions

HttpException

On validation failure.

Definition at line 183 of file Handler.php.

References MediaWiki\Rest\Validator\Validator\validateBody(), and MediaWiki\Rest\Validator\Validator\validateParams().

Member Data Documentation

$authority

Authority MediaWiki\Rest\Handler::$authority

private

Definition at line 35 of file Handler.php.

$conditionalHeaderUtil

ConditionalHeaderUtil MediaWiki\Rest\Handler::$conditionalHeaderUtil

private

Definition at line 50 of file Handler.php.

$config

array MediaWiki\Rest\Handler::$config

private

Definition at line 38 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\PageSourceHandler\__construct(), MediaWiki\Rest\Handler\RevisionSourceHandler\__construct(), MediaWiki\Rest\Handler\PageHTMLHandler\__construct(), MediaWiki\Rest\Handler\RevisionHTMLHandler\__construct(), and MediaWiki\Rest\Handler\SearchHandler\__construct().

$hookContainer

HookContainer MediaWiki\Rest\Handler::$hookContainer

private

Definition at line 53 of file Handler.php.

$hookRunner

HookRunner MediaWiki\Rest\Handler::$hookRunner

private

Definition at line 56 of file Handler.php.

$request

RequestInterface MediaWiki\Rest\Handler::$request

private

Definition at line 32 of file Handler.php.

Referenced by MediaWiki\Rest\Handler\ActionModuleBasedHandler\execute().

$responseFactory

ResponseFactory MediaWiki\Rest\Handler::$responseFactory

private

Definition at line 41 of file Handler.php.

$router

Router MediaWiki\Rest\Handler::$router

private

Definition at line 29 of file Handler.php.

$validatedBody

mixed MediaWiki\Rest\Handler::$validatedBody

private

Definition at line 47 of file Handler.php.

$validatedParams

array null MediaWiki\Rest\Handler::$validatedParams

private

Definition at line 44 of file Handler.php.

Referenced by MediaWiki\Rest\SimpleHandler\execute().

PARAM_SOURCE

const MediaWiki\Rest\Handler::PARAM_SOURCE = 'rest-param-source'

(string) ParamValidator constant to specify the source of the parameter.

Value must be 'path', 'query', or 'post'. 'post' refers to application/x-www-form-urlencoded or multipart/form-data encoded parameters in the body of a POST request (in other words, parameters in PHP's $_POST). For other kinds of POST parameters, such as JSON fields, use BodyValidator instead of ParamValidator.

Definition at line 26 of file Handler.php.

Referenced by MediaWiki\Rest\SimpleHandler\execute(), MediaWiki\Rest\Handler\CompareHandler\getParamSettings(), and MediaWiki\Rest\Validator\Validator\validateParams().

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

• includes/Rest/Handler.php