Retrieves a value from cache with a specified key.
| public get ( mixed $key ) : mixed | ||
| $key | mixed | a key identifying the cached value. This can be a simple string or a complex data structure consisting of factors representing the key. |
| return | mixed | the value stored in cache, false if the value is not in the cache, expired, or the dependency associated with the cached data has changed. |
/**
* @inheritdoc
*/
public function load()
{
$contents = $this->yiiCache->get($this->key);
if ($contents !== false) {
$this->setFromStorage($contents);
}
}
protected function load()
{
$this->items = $this->cache->get('settings');
if (!$this->items) {
$this->items = [];
$rows = (new Query())->from($this->tableName)->all($this->db);
foreach ($rows as $row) {
$this->items[$row['category']][$row['key']] = @unserialize($row['value']);
}
$this->cache->set('settings', $this->items, $this->cacheTime);
}
}
/**
* @throws InvalidConfigException
*/
public function init()
{
if ($this->cache) {
/** @var Cache $cache */
$this->cache = Instance::ensure($this->cache, Cache::className());
$cacheKey = __CLASS__;
if (($this->_paramsInfo = $this->cache->get($cacheKey)) === false) {
$this->_paramsInfo = $this->fetchParamsInfo();
$this->cache->set($cacheKey, $this->_paramsInfo, $this->cacheDuration, $this->cacheDependency);
}
} else {
$this->_paramsInfo = $this->fetchParamsInfo();
}
}
/**
* @inheritdoc
*/
protected function acquireLock($name, $timeout = 0)
{
if (!$this->cache instanceof Cache) {
return false;
}
$waitTime = 0;
while ($this->cache->get($this->getCacheKey($name)) !== false) {
$waitTime++;
if ($waitTime > $timeout) {
return false;
}
sleep(1);
}
return $this->cache->set($this->getCacheKey($name), true);
}
public function getToken($userId, $name, $portraitUri)
{
$cacheKey = 'token:' . serialize([strval($userId), strval($name), strval($portraitUri)]);
if (!$this->cache instanceof Cache || false == ($results = $this->cache->get($cacheKey)) || !isset($results['token'])) {
$response = $this->request('/user/getToken', ['userId' => $this->getUserAlias($userId), 'name' => $name, 'portraitUri' => $portraitUri]);
$results = Json::decode($response, true);
if (!isset($results['code']) || 200 != $results['code']) {
throw new ResultException($response, '获取token失败');
}
if ($this->cache instanceof Cache) {
$this->cache->set($cacheKey, $results, $this->tokenCacheDuration);
}
}
return $results['token'];
}
/**
* @return array
* @throws \yii\base\InvalidConfigException
*/
protected function getAllAssignments()
{
$result = [];
$useCache = $this->useCache === true;
if ($useCache && $this->cache->exists('assignments-0')) {
echo ' > Assignments cache exists.' . PHP_EOL;
$answer = $this->prompt(' > Use cache? [yes/no]');
if (strpos($answer, 'y') === 0) {
$this->cacheIterator(function ($key) use(&$result) {
$result = ArrayHelper::merge($result, $this->cache->get($key));
});
return $result;
}
}
/** @var \yii\db\ActiveQuery $UsersQuery */
$UsersQuery = call_user_func([$this->user->identityClass, 'find']);
/** @var \yii\web\IdentityInterface[] $Users */
foreach ($UsersQuery->batch($this->batchSize, $this->db) as $k => $Users) {
$chunk = [];
foreach ($Users as $User) {
$pk = $User->getId();
$assignments = array_keys($this->authManager->getAssignments($pk));
$chunk[$pk] = $assignments;
$result[$pk] = $assignments;
}
if ($useCache) {
$this->cache->set(sprintf('assignments-%d', $k), $chunk);
}
}
return $result;
}
private function getFromCache($part)
{
if ($this->enableCaching) {
return $this->cache->get($this->buildKey($part));
}
return false;
}
/**
* @param int|string $userId
* @param string $key
* @return bool|mixed
*/
protected function getFromCache($userId, $key)
{
if ($this->cacheIsActive()) {
return $this->cache->get($this->buildCacheKey($userId, $key));
} else {
return false;
}
}
public function run()
{
if ($this->cache) {
/** @var Cache $cache */
$this->cache = Instance::ensure($this->cache, Cache::className());
$cacheKey = [__CLASS__, $this->items];
if (($this->items = $this->cache->get($cacheKey)) === false) {
$this->items = ModuleEvent::trigger(self::EVENT_FETCH_ITEMS, new MenuItemsEvent(['items' => $this->items]), 'items');
$this->cache->set($cacheKey, $this->items, $this->cacheDuration, $this->cacheDependency);
}
} else {
$this->items = ModuleEvent::trigger(self::EVENT_FETCH_ITEMS, new MenuItemsEvent(['items' => $this->items]), 'items');
}
$this->items += $this->customItems;
parent::run();
// TODO: Change the autogenerated stub
}
/**
* Performs the actual dependency checking.
* @param Cache $cache the cache component that is currently evaluating this dependency
* @return boolean whether the dependency is changed or not.
* @throws InvalidConfigException if [[group]] is not set.
*/
public function getHasChanged($cache)
{
if ($this->group === null) {
throw new InvalidConfigException('GroupDependency::group must be set');
}
$version = $cache->get([__CLASS__, $this->group]);
return $version === false || $version !== $this->data;
}
public function init()
{
if ($this->cache) {
/** @var Cache $cache */
$this->cache = Instance::ensure($this->cache, Cache::className());
$cacheKey = __CLASS__;
if ((list($paths, $routes, $links) = $this->cache->get($cacheKey)) === false) {
$this->createMap();
$this->cache->set($cacheKey, [$this->_paths, $this->_routes, $this->_links], $this->cacheDuration, $this->cacheDependency);
} else {
$this->_paths = $paths;
$this->_routes = $routes;
$this->_links = $links;
}
} else {
$this->createMap();
}
}
public function init()
{
if (!$this->language) {
throw new InvalidConfigException(get_called_class() . '::language must be set.');
}
if ($this->cache) {
/** @var Cache $cache */
$this->cache = Instance::ensure($this->cache, Cache::className());
$cacheKey = [__CLASS__, $this->language];
if ((list($paths, $routes, $links) = $this->cache->get($cacheKey)) === false) {
$this->createMap();
$this->cache->set($cacheKey, [$this->_paths, $this->_routes, $this->_links], $this->cacheDuration, $this->cacheDependency);
} else {
$this->_paths = $paths;
$this->_routes = $routes;
$this->_links = $links;
}
} else {
$this->createMap();
}
}
/**
* 通过API查询IP信息
* @param null $ip
* @return IpData|mixed
*/
public function get($ip = null)
{
$ip = $ip === null ? Yii::$app->request->userIP : $ip;
$ipData = new IpData();
$cacheKey = $this->getCacheKey($ip);
if ($this->cache !== null && ($json = $this->cache->get($cacheKey))) {
$ipData->setAttributes(json_decode($json, true), false);
return $ipData;
}
$context = stream_context_create(['http' => ['timeout' => 1]]);
$url = $this->_url . $ip;
try {
$result = json_decode(file_get_contents($url, 0, $context), true);
} catch (Exception $e) {
$result = null;
}
if ($result && $result['code'] == 0) {
$ipData->setAttributes($result['data'], false);
$this->cache !== null && $this->cache->set($cacheKey, json_encode($ipData), $this->cacheDuration);
}
return $ipData;
}
/**
* Get data
* @return array
*/
public function getData()
{
if ($this->_data === null) {
if ($this->_cache !== null) {
$cache = $this->_cache->get($this->cacheKey);
if ($cache === false) {
$this->_data = $this->_getDataFromDb();
$this->_setCache();
} else {
$this->_data = $cache;
}
} else {
$this->_data = $this->_getDataFromDb();
}
}
return $this->_data;
}
/**
* Get list of application routes
*
* @param string|null $module
*
* @return array
*/
public function getAppRoutes($module = null)
{
if ($module === null) {
$module = Yii::$app;
} elseif (is_string($module)) {
$module = Yii::$app->getModule($module);
}
$key = [__METHOD__, $module->getUniqueId()];
$result = $this->cache !== null ? $this->cache->get($key) : false;
if ($result === false) {
$result = [];
$this->getRouteRecursive($module, $result);
if ($this->cache !== null) {
$this->cache->set($key, $result, $this->cacheDuration, new TagDependency(['tags' => self::CACHE_TAG]));
}
}
return $result;
}
/**
* Производит поиск модулей удовлетворяющих условиям запроса
* @return string[] Modules Ids
*/
public function find()
{
if ($this->cache) {
$cacheKey = $this->getFindCacheKey();
if (($result = $this->cache->get($cacheKey)) === false) {
$modules = $this->findModules($this->_nodeOf ? $this->_nodeOf : Yii::$app);
if ($this->_orderBy) {
usort($modules, [$this, 'compareModules']);
}
$result = $this->extractModuleIds($modules);
$this->cache->set($cacheKey, $result, $this->cacheDuration, $this->cacheDependency);
}
return $result;
}
$modules = $this->findModules($this->_nodeOf ? $this->_nodeOf : Yii::$app);
if ($this->_orderBy) {
usort($modules, [$this, 'compareModules']);
}
return $this->extractModuleIds($modules);
}
/**
* Renders the menu.
*/
public function run()
{
if ($this->route === null && Yii::$app->controller !== null) {
$this->route = Yii::$app->controller->getRoute();
}
if ($this->cache) {
/** @var Cache $cache */
$this->cache = Instance::ensure($this->cache, Cache::className());
$cacheKey = [__CLASS__, $this->items];
if (($this->items = $this->cache->get($cacheKey)) === false) {
$this->items = ModuleEvent::trigger(self::EVENT_FETCH_ITEMS, new DesktopEvent(['items' => $this->items]), 'items');
$this->cache->set($cacheKey, $this->items, $this->cacheDuration, $this->cacheDependency);
}
} else {
$this->items = ModuleEvent::trigger(self::EVENT_FETCH_ITEMS, new DesktopEvent(['items' => $this->items]), 'items');
}
$this->normalizeItems();
$options = $this->options;
$tag = ArrayHelper::remove($options, 'tag', 'div');
echo Html::tag($tag, $this->renderItems($this->columns), $options);
}
/**
* Get OAuth2 token using client credentials granted method.
* @param boolean $isForce Whether force regenerated token.
* @return string
*/
public function getToken($isForce = false)
{
if ($this->_token === null || $isForce) {
$key = __CLASS__ . '#' . $this->clientId . '#token';
if ($this->cache instanceof Cache && !$isForce) {
$token = $this->cache->get($key);
if ($token) {
$this->_token = $token['access_token'];
goto RESULT;
}
}
$client = $this->getClient();
$url = static::buildUrl($this->baseUrl, $this->tokenPath);
$res = $client->post($url, ['json' => ['client_id' => $this->clientId, 'client_secret' => $this->clientSecret, 'grant_type' => 'client_credentials']]);
$tmp = $res->json();
$this->_token = $tmp['access_token'];
if ($this->cache instanceof Cache) {
$this->cache->set($key, $tmp, $tmp['expires_in'] - 300);
}
}
RESULT:
return $this->_token;
}
/**
* Set row value
* @param $name
* @return mixed
*/
public function get($name)
{
return $this->_cache->get($this->prefix . $name);
}
/**
* @param $key
*
* @return mixed
*
* @see yii\caching\Cache::get()
*/
public function get($key)
{
return $this->cache->get($key);
}
/**
* 获取缓存数据
* @param $name 缓存Key
* @return mixed
*/
protected function getCache($name)
{
return $this->cache->get($this->getCacheKey($name));
}
/**
* @param string $key
* @return mixed
*/
protected function getCacheData($key)
{
$value = isset($this->data[$key]) ? $this->data[$key] : null;
return $value ?: $this->cache->get($key);
}
