function test_caching_expired()
{
$url = 'http://example.org/';
$args = array('method' => 'GET');
// ensure a previous cache file doesn't exists.
$hash_0 = wl_caching_hash($url, $args);
wl_caching_delete($hash_0);
// Cache for 5 seconds.
$response_0 = wl_caching_remote_request($url, $args, false, 5);
#$this->assertFalse( wl_caching_response_is_cached( $response_0 ) );
// Check that the first request is still cached.
$response_1 = wl_caching_remote_request($url, $args);
$this->assertTrue(wl_caching_response_is_cached($response_1));
// Wait 5 seconds and check that another request is not cached.
sleep(5);
$response_2 = wl_caching_remote_request($url, $args);
$this->assertFalse(wl_caching_response_is_cached($response_2));
}
/**
* Perform a remote request and return the local copy if any.
*
* @since 3.0.0
*
* @uses wl_caching_hash() to get the hash for a request.
* @uses wl_caching_get_filename() to check whether a request is cached.
* @uses wl_caching_get() to get a cached response.
* @uses wl_caching_put() to store a response in the cache.
*
* @param string $url The remote URL.
* @param array $args The request parameters.
* @param bool $refresh If true, a remote request will be made and the cache will be refreshed.
* @param int $expires_in_seconds How many seconds the cache is valid.
* @return array The remote response.
*/
function wl_caching_remote_request($url, $args, $refresh = false, $expires_in_seconds = 3600)
{
// Merge the default settings for remote queries.
$args = array_merge_recursive(unserialize(WL_REDLINK_API_HTTP_OPTIONS), $args);
// echo $url . "\n";
// print_r( $args );
// Create an hash of the request.
$hash = wl_caching_hash($url, $args);
// If the document is cached, return the cached copy.
if (!$refresh && false !== ($response = wl_caching_get($hash))) {
return $response;
}
// Make the request, put the response in the cache and return it to the client.
$response = wp_remote_request($url, $args);
// Cache only valid responses.
if (!is_wp_error($response) && 200 === (int) $response['response']['code']) {
wl_caching_put($hash, $response, $expires_in_seconds);
}
return $response;
}
