* use Aws\S3\RegionalEndpoint\ConfigurationProvider; * $provider = ConfigurationProvider::defaultProvider(); * // Returns a ConfigurationInterface or throws. * $config = $provider()->wait(); * * * 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\S3\RegionalEndpoint\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. * * * // 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(); * */ class ConfigurationProvider extends AbstractConfigurationProvider implements ConfigurationProviderInterface { const ENV_ENDPOINTS_TYPE = 'AWS_S3_US_EAST_1_REGIONAL_ENDPOINT'; const INI_ENDPOINTS_TYPE = 's3_us_east_1_regional_endpoint'; const DEFAULT_ENDPOINTS_TYPE = 'legacy'; public static $cacheKey = 'aws_s3_us_east_1_regional_endpoint_config'; protected static $interfaceClass = ConfigurationInterface::class; protected static $exceptionClass = ConfigurationException::class; /** * Create a default config provider that first checks for environment * variables, then checks for a specified profile in the environment-defined * config file location (env variable is 'AWS_CONFIG_FILE', file location * defaults to ~/.aws/config), then checks for the "default" profile in the * environment-defined config file location, 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 * * @return callable */ public static function defaultProvider(array $config = []) { $configProviders = [self::env()]; if (!isset($config['use_aws_shared_config_files']) || $config['use_aws_shared_config_files'] != \false) { $configProviders[] = self::ini(); } $configProviders[] = self::fallback(); $memo = self::memoize(\call_user_func_array([ConfigurationProvider::class, 'chain'], $configProviders)); if (isset($config['s3_us_east_1_regional_endpoint']) && $config['s3_us_east_1_regional_endpoint'] instanceof CacheInterface) { return self::cache($memo, $config['s3_us_east_1_regional_endpoint'], self::$cacheKey); } return $memo; } public static function env() { return function () { // Use config from environment variables, if available $endpointsType = \getenv(self::ENV_ENDPOINTS_TYPE); if (!empty($endpointsType)) { return Promise\Create::promiseFor(new Configuration($endpointsType)); } return self::reject('Could not find environment variable config' . ' in ' . self::ENV_ENDPOINTS_TYPE); }; } /** * Config provider that creates config using a config file whose location * is specified by an environment variable 'AWS_CONFIG_FILE', defaulting to * ~/.aws/config if not specified * * @param string|null $profile Profile to use. If not specified will use * the "default" profile. * @param string|null $filename If provided, uses a custom filename rather * than looking in the default directory. * * @return callable */ public static function ini($profile = null, $filename = null) { $filename = $filename ?: self::getDefaultConfigFilename(); $profile = $profile ?: (\getenv(self::ENV_PROFILE) ?: 'default'); return function () use($profile, $filename) { if (!@\is_readable($filename)) { return self::reject("Cannot read configuration from {$filename}"); } $data = \DeliciousBrains\WP_Offload_Media\Aws3\Aws\parse_ini_file($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[$profile][self::INI_ENDPOINTS_TYPE])) { return self::reject("Required S3 regional endpoint config values\n not present in INI profile '{$profile}' ({$filename})"); } return Promise\Create::promiseFor(new Configuration($data[$profile][self::INI_ENDPOINTS_TYPE])); }; } /** * Fallback config options when other sources are not set. * * @return callable */ public static function fallback() { return function () { return Promise\Create::promiseFor(new Configuration(self::DEFAULT_ENDPOINTS_TYPE, \true)); }; } /** * 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 Promise\PromiseInterface) { $config = $config->wait(); } if ($config instanceof ConfigurationInterface) { return $config; } if (\is_string($config)) { return new Configuration($config); } if (\is_array($config) && isset($config['endpoints_type'])) { return new Configuration($config['endpoints_type']); } throw new \InvalidArgumentException('Not a valid S3 regional endpoint ' . 'configuration argument.'); } }