[Cache and Log Guzzle Requests] #guzzle #cache #log

index.php

<?php

use GuzzleHttp\Client;

use GuzzleHttp\HandlerStack;
use GuzzleHttp\MessageFormatter;
use GuzzleHttp\Middleware;
use GuzzleHttp\Promise;

/**
        "kevinrob/guzzle-cache-middleware": "^3.2",
        "symfony/cache": "^3.4",
        "monolog/monolog": "^1.24.0"
*/

use Kevinrob\GuzzleCache\CacheMiddleware;
use Kevinrob\GuzzleCache\Storage\Psr6CacheStorage;
use Symfony\Component\Cache\Adapter\FilesystemAdapter;

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\RequestInterface;

use Monolog\Logger;
use Monolog\Handler\RotatingFileHandler;



// Create default HandlerStack
$stack = HandlerStack::create();

/**
 * @link https://stackoverflow.com/questions/32681165/how-do-you-log-all-api-calls-using-guzzle-6
 * @link https://github.com/guzzle/guzzle/blob/master/src/MessageFormatter.php#L12
 * @var Logger
 */
$logger = new Logger('guzzle');
$handler = new RotatingFileHandler(ROOT_PATH . '/cache/log.log', 0, Logger::DEBUG, true, 0664);
$handler->setFilenameFormat('{filename}-{date}', 'Ymd');
$logger->pushHandler($handler);

$stack->push(
	Middleware::log(
		$logger,
		// https://github.com/guzzle/guzzle/blob/master/src/MessageFormatter.php#L12
		new MessageFormatter('{method} {target} - {res_headers}')
	),
  	'logger'
);


/**
 * set caching
 *
 * The `PrivateCacheStrategy` will cache private and public responses
 * The `PublicCacheStrategy` will only cache responses suitable for a public-cache
 * The `GreedyCacheStrategy` will cache everything - even if the header does not allow any caching at all.
 *
 * @link   https://github.com/Kevinrob/guzzle-cache-middleware
 * @link   https://web.archive.org/web/20180907070705/https://a.kabachnik.info/caching-http-requests-with-guzzle-6-and-psr-6.html
 */
$stack->push(
	new CacheMiddleware(
		#new \Kevinrob\GuzzleCache\Strategy\PrivateCacheStrategy(
		new \Kevinrob\GuzzleCache\Strategy\GreedyCacheStrategy(
			new Psr6CacheStorage(
				new FilesystemAdapter('guzzle', 0, ROOT_PATH.'/cache/')
			),
			60*15
		)
	),
	'cache'
);

// $stack->remove('logger');
// @link http://docs.guzzlephp.org/en/stable/handlers-and-middleware.html#handlerstack

// Initialize the client with the handler option
$client = new Client(['handler' => $stack]);

// remove 'logger' from the handler stack after initialization
$client->getConfig('handler')->remove('logger');

// do $client->get('https://what.ever/api/hi.json');