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<?php
/**
* WP_Sync_Storage interface
*
* @package WordPress
*/
interface WP_Sync_Storage {
/**
* Adds a sync update to a given room.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @param mixed $update Serializable sync update, opaque to the storage implementation.
* @return bool True on success, false on failure.
*/
public function add_update( string $room, $update ): bool;
/**
* Gets awareness state for a given room.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @return array<int, mixed> Awareness state.
*/
public function get_awareness_state( string $room ): array;
/**
* Gets the current cursor for a given room. This should return a monotonically
* increasing integer that represents the last update that was returned for the
* room during the current request. This allows clients to retrieve updates
* after a specific cursor on subsequent requests.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @return int Current cursor for the room.
*/
public function get_cursor( string $room ): int;
/**
* Gets the total number of stored updates for a given room.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @return int Total number of updates.
*/
public function get_update_count( string $room ): int;
/**
* Retrieves sync updates from a room for a given client and cursor. Updates
* from the specified client should be excluded.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @param int $cursor Return updates after this cursor.
* @return array<int, mixed> Sync updates.
*/
public function get_updates_after_cursor( string $room, int $cursor ): array;
/**
* Removes updates from a room that are older than the provided cursor.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @param int $cursor Remove updates with markers < this cursor.
* @return bool True on success, false on failure.
*/
public function remove_updates_before_cursor( string $room, int $cursor ): bool;
/**
* Sets awareness state for a given room.
*
* @since 7.0.0
*
* @param string $room Room identifier.
* @param array<int, mixed> $awareness Serializable awareness state.
* @return bool True on success, false on failure.
*/
public function set_awareness_state( string $room, array $awareness ): bool;
}