Файловый менеджер - Редактировать - /home/lexlmvtu/public_html/wp-content/plugins/w3-total-cache/lib/Aws/Aws/ClientSideMonitoring/ConfigurationProvider.php
Назад
<?php namespace Aws\ClientSideMonitoring; use Aws\CacheInterface; use Aws\ClientSideMonitoring\Exception\ConfigurationException; use GuzzleHttp\Promise; use GuzzleHttp\Promise\PromiseInterface; /** * A configuration provider is a function that accepts no arguments and returns * a promise that is fulfilled with a {@see \Aws\ClientSideMonitoring\ConfigurationInterface} * or rejected with an {@see \Aws\ClientSideMonitoring\Exception\ConfigurationException}. * * <code> * use Aws\ClientSideMonitoring\ConfigurationProvider; * $provider = ConfigurationProvider::defaultProvider(); * // Returns a ConfigurationInterface or throws. * $config = $provider()->wait(); * </code> * * Configuration providers can be composed to create configuration using * conditional logic that can create different configurations in different * environments. You can compose multiple providers into a single provider using * {@see Aws\ClientSideMonitoring\ConfigurationProvider::chain}. This function * accepts providers as variadic arguments and returns a new function that will * invoke each provider until a successful configuration is returned. * * <code> * // First try an INI file at this location. * $a = ConfigurationProvider::ini(null, '/path/to/file.ini'); * // Then try an INI file at this location. * $b = ConfigurationProvider::ini(null, '/path/to/other-file.ini'); * // Then try loading from environment variables. * $c = ConfigurationProvider::env(); * // Combine the three providers together. * $composed = ConfigurationProvider::chain($a, $b, $c); * // Returns a promise that is fulfilled with a configuration or throws. * $promise = $composed(); * // Wait on the configuration to resolve. * $config = $promise->wait(); * </code> */ class ConfigurationProvider { const CACHE_KEY = 'aws_cached_csm_config'; const DEFAULT_CLIENT_ID = ''; const DEFAULT_ENABLED = false; const DEFAULT_PORT = 31000; const ENV_CLIENT_ID = 'AWS_CSM_CLIENT_ID'; const ENV_ENABLED = 'AWS_CSM_ENABLED'; const ENV_PORT = 'AWS_CSM_PORT'; const ENV_PROFILE = 'AWS_PROFILE'; /** * Wraps a credential provider and saves provided credentials in an * instance of Aws\CacheInterface. Forwards calls when no credentials found * in cache and updates cache with the results. * * @param callable $provider Credentials provider function to wrap * @param CacheInterface $cache Cache to store credentials * @param string|null $cacheKey (optional) Cache key to use * * @return callable */ public static function cache( callable $provider, CacheInterface $cache, $cacheKey = null ) { $cacheKey = $cacheKey ?: self::CACHE_KEY; return function () use ($provider, $cache, $cacheKey) { $found = $cache->get($cacheKey); if ($found instanceof ConfigurationInterface) { return Promise\promise_for($found); } return $provider() ->then(function (ConfigurationInterface $config) use ( $cache, $cacheKey ) { $cache->set( $cacheKey, $config ); return $config; }); }; } /** * Creates an aggregate credentials provider that invokes the provided * variadic providers one after the other until a provider returns * credentials. * * @return callable */ public static function chain() { $links = func_get_args(); if (empty($links)) { throw new \InvalidArgumentException('No providers in chain'); } return function () use ($links) { /** @var callable $parent */ $parent = array_shift($links); $promise = $parent(); while ($next = array_shift($links)) { $promise = $promise->otherwise($next); } return $promise; }; } /** * Create a default CSM config provider that first checks for environment * variables, then checks for a specified profile in ~/.aws/config, then * checks for the "aws_csm" profile in ~/.aws/config, and failing those uses * a default fallback set of configuration options. * * This provider is automatically wrapped in a memoize function that caches * previously provided config options. * * @param array $config Optional array of ecs/instance profile credentials * provider options. * * @return callable */ public static function defaultProvider(array $config = []) { $configProviders = [ self::env(), self::ini(), self::fallback() ]; $memo = self::memoize( call_user_func_array('self::chain', $configProviders) ); if (isset($config['csm']) && $config['csm'] instanceof CacheInterface) { return self::cache($memo, $config['csm'], self::CACHE_KEY); } return $memo; } /** * Provider that creates CSM config from environment variables. * * @return callable */ public static function env() { return function () { // Use credentials from environment variables, if available $enabled = getenv(self::ENV_ENABLED); if ($enabled !== false) { return Promise\promise_for( new Configuration( $enabled, getenv(self::ENV_PORT) ?: self::DEFAULT_PORT, getenv(self:: ENV_CLIENT_ID) ?: self::DEFAULT_CLIENT_ID ) ); } return self::reject('Could not find environment variable CSM config' . ' in ' . self::ENV_ENABLED. '/' . self::ENV_PORT . '/' . self::ENV_CLIENT_ID); }; } /** * Fallback config options when other sources are not set. * * @return callable */ public static function fallback() { return function() { return Promise\promise_for( new Configuration( self::DEFAULT_ENABLED, self::DEFAULT_PORT, self::DEFAULT_CLIENT_ID ) ); }; } /** * Gets the environment's HOME directory if available. * * @return null|string */ private static function getHomeDir() { // On Linux/Unix-like systems, use the HOME environment variable if ($homeDir = getenv('HOME')) { return $homeDir; } // Get the HOMEDRIVE and HOMEPATH values for Windows hosts $homeDrive = getenv('HOMEDRIVE'); $homePath = getenv('HOMEPATH'); return ($homeDrive && $homePath) ? $homeDrive . $homePath : null; } /** * CSM config provider that creates CSM config using an ini file stored * in the current user's home directory. * * @param string|null $profile Profile to use. If not specified will use * the "aws_csm" profile in "~/.aws/config". * @param string|null $filename If provided, uses a custom filename rather * than looking in the home directory. * * @return callable */ public static function ini($profile = null, $filename = null) { $filename = $filename ?: (self::getHomeDir() . '/.aws/config'); $profile = $profile ?: (getenv(self::ENV_PROFILE) ?: 'aws_csm'); return function () use ($profile, $filename) { if (!is_readable($filename)) { return self::reject("Cannot read CSM config from $filename"); } $data = \Aws\parse_ini_file($filename, true); if ($data === false) { return self::reject("Invalid config file: $filename"); } if (!isset($data[$profile])) { return self::reject("'$profile' not found in config file"); } if (!isset($data[$profile]['csm_enabled'])) { return self::reject("Required CSM config values not present in INI profile '{$profile}' ({$filename})"); } // port is optional if (empty($data[$profile]['csm_port'])) { $data[$profile]['csm_port'] = self::DEFAULT_PORT; } // client_id is optional if (empty($data[$profile]['csm_client_id'])) { $data[$profile]['csm_client_id'] = self::DEFAULT_CLIENT_ID; } return Promise\promise_for( new Configuration( $data[$profile]['csm_enabled'], $data[$profile]['csm_port'], $data[$profile]['csm_client_id'] ) ); }; } /** * Wraps a CSM config provider and caches previously provided configuration. * * Ensures that cached configuration is refreshed when it expires. * * @param callable $provider CSM config provider function to wrap. * * @return callable */ public static function memoize(callable $provider) { return function () use ($provider) { static $result; static $isConstant; // Constant config will be returned constantly. if ($isConstant) { return $result; } // Create the initial promise that will be used as the cached value // until it expires. if (null === $result) { $result = $provider(); } // Return config and set flag that provider is already set return $result ->then(function (ConfigurationInterface $config) use (&$isConstant) { $isConstant = true; return $config; }); }; } /** * Reject promise with standardized exception. * * @param $msg * @return Promise\RejectedPromise */ private static function reject($msg) { return new Promise\RejectedPromise(new ConfigurationException($msg)); } /** * Unwraps a configuration object in whatever valid form it is in, * always returning a ConfigurationInterface object. * * @param mixed $config * @return ConfigurationInterface * @throws \InvalidArgumentException */ public static function unwrap($config) { if (is_callable($config)) { $config = $config(); } if ($config instanceof PromiseInterface) { $config = $config->wait(); } if ($config instanceof ConfigurationInterface) { return $config; } elseif (is_array($config) && isset($config['enabled'])) { $client_id = isset($config['client_id']) ? $config['client_id'] : self::DEFAULT_CLIENT_ID; $port = isset($config['port']) ? $config['port'] : self::DEFAULT_PORT; return new Configuration($config['enabled'], $port, $client_id); } throw new \InvalidArgumentException('Not a valid CSM configuration ' . 'argument.'); } }
| ver. 1.4 |
Github
|
.
| PHP 7.2.34 | Генерация страницы: 0 |
proxy
|
phpinfo
|
Настройка