DiffusionCacheEngineExtension.php
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DiffusionCacheEngineExtension.php
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	<?php

	final class DiffusionCacheEngineExtension
	extends PhabricatorCacheEngineExtension {

	const EXTENSIONKEY = 'diffusion';

	public function getExtensionName() {
	return pht('Diffusion Repositories');
	}

	public function discoverLinkedObjects(
	PhabricatorCacheEngine $engine,
	array $objects) {
	$viewer = $engine->getViewer();
	$results = array();

	// When an Almanac Service changes, update linked repositories.

	$services = $this->selectObjects($objects, 'AlmanacService');
	if ($services) {
	$repositories = id(new PhabricatorRepositoryQuery())
	->setViewer($viewer)
	->withAlmanacServicePHIDs(mpull($services, 'getPHID'))
	->execute();
	foreach ($repositories as $repository) {
	$results[] = $repository;
	}
	}

	return $results;
	}

	public function deleteCaches(
	PhabricatorCacheEngine $engine,
	array $objects) {

	$keys = array();
	$repositories = $this->selectObjects($objects, 'PhabricatorRepository');
	foreach ($repositories as $repository) {
	$keys[] = $repository->getAlmanacServiceCacheKey();
	}

	$keys = array_filter($keys);

	if ($keys) {
	$cache = PhabricatorCaches::getMutableStructureCache();
	$cache->deleteKeys($keys);
	}
	}

	}