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<?php namespace Aws; use Aws\Api\ApiProvider; use Aws\Api\DocModel; use Aws\Api\Service; use Aws\ClientSideMonitoring\ApiCallAttemptMonitoringMiddleware; use Aws\ClientSideMonitoring\ApiCallMonitoringMiddleware; use Aws\ClientSideMonitoring\ConfigurationProvider; use Aws\EndpointDiscovery\EndpointDiscoveryMiddleware; use Aws\Signature\SignatureProvider; use GuzzleHttp\Psr7\Uri; /** * Default AWS client implementation */ class AwsClient implements AwsClientInterface { use AwsClientTrait; /** @var array */ private $config; /** @var string */ private $region; /** @var string */ private $endpoint; /** @var Service */ private $api; /** @var callable */ private $signatureProvider; /** @var callable */ private $credentialProvider; /** @var HandlerList */ private $handlerList; /** @var array*/ private $defaultRequestOptions; /** * Get an array of client constructor arguments used by the client. * * @return array */ public static function getArguments() { return ClientResolver::getDefaultArguments(); } /** * The client constructor accepts the following options: * * - api_provider: (callable) An optional PHP callable that accepts a * type, service, and version argument, and returns an array of * corresponding configuration data. The type value can be one of api, * waiter, or paginator. * - credentials: * (Aws\Credentials\CredentialsInterface|array|bool|callable) Specifies * the credentials used to sign requests. Provide an * Aws\Credentials\CredentialsInterface object, an associative array of * "key", "secret", and an optional "token" key, `false` to use null * credentials, or a callable credentials provider used to create * credentials or return null. See Aws\Credentials\CredentialProvider for * a list of built-in credentials providers. If no credentials are * provided, the SDK will attempt to load them from the environment. * - debug: (bool|array) Set to true to display debug information when * sending requests. Alternatively, you can provide an associative array * with the following keys: logfn: (callable) Function that is invoked * with log messages; stream_size: (int) When the size of a stream is * greater than this number, the stream data will not be logged (set to * "0" to not log any stream data); scrub_auth: (bool) Set to false to * disable the scrubbing of auth data from the logged messages; http: * (bool) Set to false to disable the "debug" feature of lower level HTTP * adapters (e.g., verbose curl output). * - stats: (bool|array) Set to true to gather transfer statistics on * requests sent. Alternatively, you can provide an associative array with * the following keys: retries: (bool) Set to false to disable reporting * on retries attempted; http: (bool) Set to true to enable collecting * statistics from lower level HTTP adapters (e.g., values returned in * GuzzleHttp\TransferStats). HTTP handlers must support an * `http_stats_receiver` option for this to have an effect; timer: (bool) * Set to true to enable a command timer that reports the total wall clock * time spent on an operation in seconds. * - disable_host_prefix_injection: (bool) Set to true to disable host prefix * injection logic for services that use it. This disables the entire * prefix injection, including the portions supplied by user-defined * parameters. Setting this flag will have no effect on services that do * not use host prefix injection. * - endpoint: (string) The full URI of the webservice. This is only * required when connecting to a custom endpoint (e.g., a local version * of S3). * - endpoint_discovery: (Aws\EndpointDiscovery\ConfigurationInterface, * Aws\CacheInterface, array, callable) Settings for endpoint discovery. * Provide an instance of Aws\EndpointDiscovery\ConfigurationInterface, * an instance Aws\CacheInterface, a callable that provides a promise for * a Configuration object, or an associative array with the following * keys: enabled: (bool) Set to true to enable endpoint discovery, * defaults to false; cache_limit: (int) The maximum number of keys in the * endpoints cache, defaults to 1000. * - endpoint_provider: (callable) An optional PHP callable that * accepts a hash of options including a "service" and "region" key and * returns NULL or a hash of endpoint data, of which the "endpoint" key * is required. See Aws\Endpoint\EndpointProvider for a list of built-in * providers. * - handler: (callable) A handler that accepts a command object, * request object and returns a promise that is fulfilled with an * Aws\ResultInterface object or rejected with an * Aws\Exception\AwsException. A handler does not accept a next handler * as it is terminal and expected to fulfill a command. If no handler is * provided, a default Guzzle handler will be utilized. * - http: (array, default=array(0)) Set to an array of SDK request * options to apply to each request (e.g., proxy, verify, etc.). * - http_handler: (callable) An HTTP handler is a function that * accepts a PSR-7 request object and returns a promise that is fulfilled * with a PSR-7 response object or rejected with an array of exception * data. NOTE: This option supersedes any provided "handler" option. * - idempotency_auto_fill: (bool|callable) Set to false to disable SDK to * populate parameters that enabled 'idempotencyToken' trait with a random * UUID v4 value on your behalf. Using default value 'true' still allows * parameter value to be overwritten when provided. Note: auto-fill only * works when cryptographically secure random bytes generator functions * (random_bytes, openssl_random_pseudo_bytes or mcrypt_create_iv) can be * found. You may also provide a callable source of random bytes. * - profile: (string) Allows you to specify which profile to use when * credentials are created from the AWS credentials file in your HOME * directory. This setting overrides the AWS_PROFILE environment * variable. Note: Specifying "profile" will cause the "credentials" key * to be ignored. * - region: (string, required) Region to connect to. See * http://docs.aws.amazon.com/general/latest/gr/rande.html for a list of * available regions. * - retries: (int, default=int(3)) Configures the maximum number of * allowed retries for a client (pass 0 to disable retries). * - scheme: (string, default=string(5) "https") URI scheme to use when * connecting connect. The SDK will utilize "https" endpoints (i.e., * utilize SSL/TLS connections) by default. You can attempt to connect to * a service over an unencrypted "http" endpoint by setting ``scheme`` to * "http". * - signature_provider: (callable) A callable that accepts a signature * version name (e.g., "v4"), a service name, and region, and * returns a SignatureInterface object or null. This provider is used to * create signers utilized by the client. See * Aws\Signature\SignatureProvider for a list of built-in providers * - signature_version: (string) A string representing a custom * signature version to use with a service (e.g., v4). Note that * per/operation signature version MAY override this requested signature * version. * - validate: (bool, default=bool(true)) Set to false to disable * client-side parameter validation. * - version: (string, required) The version of the webservice to * utilize (e.g., 2006-03-01). * * @param array $args Client configuration arguments. * * @throws \InvalidArgumentException if any required options are missing or * the service is not supported. */ public function __construct(array $args) { list($service, $exceptionClass) = $this->parseClass(); if (!isset($args['service'])) { $args['service'] = manifest($service)['endpoint']; } if (!isset($args['exception_class'])) { $args['exception_class'] = $exceptionClass; } $this->handlerList = new HandlerList(); $resolver = new ClientResolver(static::getArguments()); $config = $resolver->resolve($args, $this->handlerList); $this->api = $config['api']; $this->signatureProvider = $config['signature_provider']; $this->endpoint = new Uri($config['endpoint']); $this->credentialProvider = $config['credentials']; $this->region = isset($config['region']) ? $config['region'] : null; $this->config = $config['config']; $this->defaultRequestOptions = $config['http']; $this->addSignatureMiddleware(); $this->addInvocationId(); $this->addClientSideMonitoring($args); $this->addEndpointParameterMiddleware($args); $this->addEndpointDiscoveryMiddleware($config, $args); if (isset($args['with_resolved'])) { $args['with_resolved']($config); } } public function getHandlerList() { return $this->handlerList; } public function getConfig($option = null) { return $option === null ? $this->config : (isset($this->config[$option]) ? $this->config[$option] : null); } public function getCredentials() { $fn = $this->credentialProvider; return $fn(); } public function getEndpoint() { return $this->endpoint; } public function getRegion() { return $this->region; } public function getApi() { return $this->api; } public function getCommand($name, array $args = []) { // Fail fast if the command cannot be found in the description. if (!isset($this->getApi()['operations'][$name])) { $name = ucfirst($name); if (!isset($this->getApi()['operations'][$name])) { throw new \InvalidArgumentException("Operation not found: $name"); } } if (!isset($args['@http'])) { $args['@http'] = $this->defaultRequestOptions; } else { $args['@http'] += $this->defaultRequestOptions; } return new Command($name, $args, clone $this->getHandlerList()); } public function __sleep() { throw new \RuntimeException('Instances of ' . static::class . ' cannot be serialized'); } /** * Get the signature_provider function of the client. * * @return callable */ final protected function getSignatureProvider() { return $this->signatureProvider; } /** * Parse the class name and setup the custom exception class of the client * and return the "service" name of the client and "exception_class". * * @return array */ private function parseClass() { $klass = get_class($this); if ($klass === __CLASS__) { return ['', 'Aws\Exception\AwsException']; } $service = substr($klass, strrpos($klass, '\\') + 1, -6); return [ strtolower($service), "Aws\\{$service}\\Exception\\{$service}Exception" ]; } private function addEndpointParameterMiddleware($args) { if (empty($args['disable_host_prefix_injection'])) { $list = $this->getHandlerList(); $list->appendBuild( EndpointParameterMiddleware::wrap( $this->api ), 'endpoint_parameter' ); } } private function addEndpointDiscoveryMiddleware($config, $args) { $list = $this->getHandlerList(); if (!isset($args['endpoint'])) { $list->appendBuild( EndpointDiscoveryMiddleware::wrap( $this, $args, $config['endpoint_discovery'] ), 'EndpointDiscoveryMiddleware' ); } } private function addSignatureMiddleware() { $api = $this->getApi(); $provider = $this->signatureProvider; $version = $this->config['signature_version']; $name = $this->config['signing_name']; $region = $this->config['signing_region']; $resolver = static function ( CommandInterface $c ) use ($api, $provider, $name, $region, $version) { $authType = $api->getOperation($c->getName())['authtype']; switch ($authType){ case 'none': $version = 'anonymous'; break; case 'v4-unsigned-body': $version = 'v4-unsigned-body'; break; } return SignatureProvider::resolve($provider, $version, $name, $region); }; $this->handlerList->appendSign( Middleware::signer($this->credentialProvider, $resolver), 'signer' ); } private function addInvocationId() { // Add invocation id to each request $this->handlerList->prependSign(Middleware::invocationId(), 'invocation-id'); } private function addClientSideMonitoring($args) { $options = ConfigurationProvider::defaultProvider($args); $this->handlerList->appendBuild( ApiCallMonitoringMiddleware::wrap( $this->credentialProvider, $options, $this->region, $this->getApi()->getServiceId() ), 'ApiCallMonitoringMiddleware' ); $callAttemptMiddleware = ApiCallAttemptMonitoringMiddleware::wrap( $this->credentialProvider, $options, $this->region, $this->getApi()->getServiceId() ); $this->handlerList->appendAttempt ( $callAttemptMiddleware, 'ApiCallAttemptMonitoringMiddleware' ); } /** * Returns a service model and doc model with any necessary changes * applied. * * @param array $api Array of service data being documented. * @param array $docs Array of doc model data. * * @return array Tuple containing a [Service, DocModel] * * @internal This should only used to document the service API. * @codeCoverageIgnore */ public static function applyDocFilters(array $api, array $docs) { return [ new Service($api, ApiProvider::defaultProvider()), new DocModel($docs) ]; } /** * @deprecated * @return static */ public static function factory(array $config = []) { return new static($config); } }