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REST API: Reuse previously-generated embedded objects when building collection response. 

Store each generated embedded object in a temporary cache when querying for linked resources so that repeated links to the same resource do not trigger repeated queries or processing.

Props TimothyBlynJacobs.
Fixes #48838.



git-svn-id: https://develop.svn.wordpress.org/trunk@47138 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
K. Adam White 2020-01-30 20:20:30 +00:00
parent 10a5077524
commit 547a08ee03
2 changed files with 132 additions and 16 deletions
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46
src/wp-includes/rest-api/class-wp-rest-server.php
View File

@ -78,6 +78,14 @@ class WP_REST_Server {
*/
protected $route_options = array();
/**
* Caches embedded requests.
*
* @since 5.4.0
* @var array
*/
protected $embed_cache = array();
/**
* Instantiates the REST server.
*
@ -462,12 +470,14 @@ class WP_REST_Server {
}
if ( $embed ) {
$this->embed_cache = array();
// Determine if this is a numeric array.
if ( wp_is_numeric_array( $data ) ) {
$data = array_map( array( $this, 'embed_links' ), $data );
} else {
$data = $this->embed_links( $data );
}
$this->embed_cache = array();
}
return $data;
@ -588,24 +598,28 @@ class WP_REST_Server {
continue;
}
// Run through our internal routing and serve.
$request = WP_REST_Request::from_url( $item['href'] );
if ( ! $request ) {
$embeds[] = array();
continue;
if ( ! array_key_exists( $item['href'], $this->embed_cache ) ) {
// Run through our internal routing and serve.
$request = WP_REST_Request::from_url( $item['href'] );
if ( ! $request ) {
$embeds[] = array();
continue;
}
// Embedded resources get passed context=embed.
if ( empty( $request['context'] ) ) {
$request['context'] = 'embed';
}
$response = $this->dispatch( $request );
/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
$response = apply_filters( 'rest_post_dispatch', rest_ensure_response( $response ), $this, $request );
$this->embed_cache[ $item['href'] ] = $this->response_to_data( $response, false );
}
// Embedded resources get passed context=embed.
if ( empty( $request['context'] ) ) {
$request['context'] = 'embed';
}
$response = $this->dispatch( $request );
/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
$response = apply_filters( 'rest_post_dispatch', rest_ensure_response( $response ), $this, $request );
$embeds[] = $this->response_to_data( $response, false );
$embeds[] = $this->embed_cache[ $item['href'] ];
}
// Determine if any real links were found.

102
tests/phpunit/tests/rest-api/rest-server.php
View File

@ -677,6 +677,108 @@ class Tests_REST_Server extends WP_Test_REST_TestCase {
$this->assertEquals( 403, $up_data['data']['status'] );
}
/**
* @ticket 48838
*/
public function test_link_embedding_clears_cache() {
$post_id = self::factory()->post->create();
$response = new WP_REST_Response();
$response->add_link( 'post', rest_url( 'wp/v2/posts/' . $post_id ), array( 'embeddable' => true ) );
$data = rest_get_server()->response_to_data( $response, true );
$this->assertArrayHasKey( 'post', $data['_embedded'] );
$this->assertCount( 1, $data['_embedded']['post'] );
wp_update_post(
array(
'ID' => $post_id,
'post_title' => 'My Awesome Title',
)
);
$data = rest_get_server()->response_to_data( $response, true );
$this->assertArrayHasKey( 'post', $data['_embedded'] );
$this->assertCount( 1, $data['_embedded']['post'] );
$this->assertEquals( 'My Awesome Title', $data['_embedded']['post'][0]['title']['rendered'] );
}
/**
* @ticket 48838
*/
public function test_link_embedding_cache() {
$response = new WP_REST_Response(
array(
'id' => 1,
)
);
$response->add_link(
'author',
rest_url( 'wp/v2/users/1' ),
array( 'embeddable' => true )
);
$response->add_link(
'author',
rest_url( 'wp/v2/users/1' ),
array( 'embeddable' => true )
);
$mock = new MockAction();
add_filter( 'rest_post_dispatch', array( $mock, 'filter' ) );
$data = rest_get_server()->response_to_data( $response, true );
$this->assertArrayHasKey( '_embedded', $data );
$this->assertArrayHasKey( 'author', $data['_embedded'] );
$this->assertCount( 2, $data['_embedded']['author'] );
$this->assertCount( 1, $mock->get_events() );
}
/**
* @ticket 48838
*/
public function test_link_embedding_cache_collection() {
$response = new WP_REST_Response(
array(
array(
'id' => 1,
'_links' => array(
'author' => array(
array(
'href' => rest_url( 'wp/v2/users/1' ),
'embeddable' => true,
),
),
),
),
array(
'id' => 2,
'_links' => array(
'author' => array(
array(
'href' => rest_url( 'wp/v2/users/1' ),
'embeddable' => true,
),
),
),
),
)
);
$mock = new MockAction();
add_filter( 'rest_post_dispatch', array( $mock, 'filter' ) );
$data = rest_get_server()->response_to_data( $response, true );
$embeds = wp_list_pluck( $data, '_embedded' );
$this->assertCount( 2, $embeds );
$this->assertArrayHasKey( 'author', $embeds[0] );
$this->assertArrayHasKey( 'author', $embeds[1] );
$this->assertCount( 1, $mock->get_events() );
}
/**
* Ensure embedding is a no-op without links in the data.
*/