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ConduitAPIMethod.php
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Mon, Mar 31, 11:16

ConduitAPIMethod.php
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<?php
/**
* @task status Method Status
* @task pager Paging Results
*/
abstract class ConduitAPIMethod
extends Phobject
implements PhabricatorPolicyInterface {
const METHOD_STATUS_STABLE = 'stable';
const METHOD_STATUS_UNSTABLE = 'unstable';
const METHOD_STATUS_DEPRECATED = 'deprecated';
abstract public function getMethodDescription();
abstract public function defineParamTypes();
abstract public function defineReturnType();
abstract public function defineErrorTypes();
abstract protected function execute(ConduitAPIRequest $request);
public function __construct() {
}
/**
* This is mostly for compatibility with
* @{class:PhabricatorCursorPagedPolicyAwareQuery}.
*/
public function getID() {
return $this->getAPIMethodName();
}
/**
* Get the status for this method (e.g., stable, unstable or deprecated).
* Should return a METHOD_STATUS_* constant. By default, methods are
* "stable".
*
* @return const METHOD_STATUS_* constant.
* @task status
*/
public function getMethodStatus() {
return self::METHOD_STATUS_STABLE;
}
/**
* Optional description to supplement the method status. In particular, if
* a method is deprecated, you can return a string here describing the reason
* for deprecation and stable alternatives.
*
* @return string|null Description of the method status, if available.
* @task status
*/
public function getMethodStatusDescription() {
return null;
}
public function getErrorDescription($error_code) {
return idx($this->defineErrorTypes(), $error_code, 'Unknown Error');
}
public function getRequiredScope() {
// by default, conduit methods are not accessible via OAuth
return PhabricatorOAuthServerScope::SCOPE_NOT_ACCESSIBLE;
}
public function executeMethod(ConduitAPIRequest $request) {
return $this->execute($request);
}
public function getAPIMethodName() {
return self::getAPIMethodNameFromClassName(get_class($this));
}
/**
* Return a key which sorts methods by application name, then method status,
* then method name.
*/
public function getSortOrder() {
$name = $this->getAPIMethodName();
$map = array(
ConduitAPIMethod::METHOD_STATUS_STABLE => 0,
ConduitAPIMethod::METHOD_STATUS_UNSTABLE => 1,
ConduitAPIMethod::METHOD_STATUS_DEPRECATED => 2,
);
$ord = idx($map, $this->getMethodStatus(), 0);
list($head, $tail) = explode('.', $name, 2);
return "{$head}.{$ord}.{$tail}";
}
public function getApplicationName() {
return head(explode('.', $this->getAPIMethodName(), 2));
}
public static function getClassNameFromAPIMethodName($method_name) {
$method_fragment = str_replace('.', '_', $method_name);
return 'ConduitAPI_'.$method_fragment.'_Method';
}
public function shouldRequireAuthentication() {
return true;
}
public function shouldAllowPublic() {
return false;
}
public function shouldAllowUnguardedWrites() {
return false;
}
/**
* Optionally, return a @{class:PhabricatorApplication} which this call is
* part of. The call will be disabled when the application is uninstalled.
*
* @return PhabricatorApplication|null Related application.
*/
public function getApplication() {
return null;
}
public static function getAPIMethodNameFromClassName($class_name) {
$match = null;
$is_valid = preg_match(
'/^ConduitAPI_(.*)_Method$/',
$class_name,
$match);
if (!$is_valid) {
throw new Exception(
"Parameter '{$class_name}' is not a valid Conduit API method class.");
}
$method_fragment = $match[1];
return str_replace('_', '.', $method_fragment);
}
protected function validateHost($host) {
if (!$host) {
// If the client doesn't send a host key, don't complain. We should in
// the future, but this change isn't severe enough to bump the protocol
// version.
// TODO: Remove this once the protocol version gets bumped past 2 (i.e.,
// require the host key be present and valid).
return;
}
// NOTE: Compare domains only so we aren't sensitive to port specification
// or omission.
$host = new PhutilURI($host);
$host = $host->getDomain();
$self = new PhutilURI(PhabricatorEnv::getURI('/'));
$self = $self->getDomain();
if ($self !== $host) {
throw new Exception(
"Your client is connecting to this install as '{$host}', but it is ".
"configured as '{$self}'. The client and server must use the exact ".
"same URI to identify the install. Edit your .arcconfig or ".
"phabricator/conf so they agree on the URI for the install.");
}
}
protected function formatStringConstants($constants) {
foreach ($constants as $key => $value) {
$constants[$key] = '"'.$value.'"';
}
$constants = implode(', ', $constants);
return 'string-constant<'.$constants.'>';
}
/* -( Paging Results )----------------------------------------------------- */
/**
* @task pager
*/
protected function getPagerParamTypes() {
return array(
'before' => 'optional string',
'after' => 'optional string',
'limit' => 'optional int (default = 100)',
);
}
/**
* @task pager
*/
protected function newPager(ConduitAPIRequest $request) {
$limit = $request->getValue('limit', 100);
$limit = min(1000, $limit);
$limit = max(1, $limit);
$pager = id(new AphrontCursorPagerView())
->setPageSize($limit);
$before_id = $request->getValue('before');
if ($before_id !== null) {
$pager->setBeforeID($before_id);
}
$after_id = $request->getValue('after');
if ($after_id !== null) {
$pager->setAfterID($after_id);
}
return $pager;
}
/**
* @task pager
*/
protected function addPagerResults(
array $results,
AphrontCursorPagerView $pager) {
$results['cursor'] = array(
'limit' => $pager->getPageSize(),
'after' => $pager->getNextPageID(),
'before' => $pager->getPrevPageID(),
);
return $results;
}
/* -( PhabricatorPolicyInterface )----------------------------------------- */
public function getPHID() {
return null;
}
public function getCapabilities() {
return array(
PhabricatorPolicyCapability::CAN_VIEW,
);
}
public function getPolicy($capability) {
// Application methods get application visibility; other methods get open
// visibility.
$application = $this->getApplication();
if ($application) {
return $application->getPolicy($capability);
}
return PhabricatorPolicies::getMostOpenPolicy();
}
public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
if (!$this->shouldRequireAuthentication()) {
// Make unauthenticated methods univerally visible.
return true;
}
return false;
}
public function describeAutomaticCapability($capability) {
return null;
}
}

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