woocommerce/includes/wc-webhook-functions.php

<?php
/**
 * WooCommerce Webhook functions
 *
 * @author   Automattic
 * @category Core
 * @package  WooCommerce/Functions
 * @version  3.2.0
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * Check if the given topic is a valid webhook topic, a topic is valid if:
 *
 * + starts with `action.woocommerce_` or `action.wc_`.
 * + it has a valid resource & event.
 *
 * @since  2.2.0
 * @param  string $topic Webhook topic.
 * @return bool
 */
function wc_is_webhook_valid_topic( $topic ) {

	// Custom topics are prefixed with woocommerce_ or wc_ are valid.
	if ( 0 === strpos( $topic, 'action.woocommerce_' ) || 0 === strpos( $topic, 'action.wc_' ) ) {
		return true;
	}

	$data = explode( '.', $topic );

	if ( ! isset( $data[0] ) || ! isset( $data[1] ) ) {
		return false;
	}

	$valid_resources = apply_filters( 'woocommerce_valid_webhook_resources', array( 'coupon', 'customer', 'order', 'product' ) );
	$valid_events    = apply_filters( 'woocommerce_valid_webhook_events', array( 'created', 'updated', 'deleted', 'restored' ) );

	if ( in_array( $data[0], $valid_resources, true ) && in_array( $data[1], $valid_events, true ) ) {
		return true;
	}

	return false;
}

/**
 * Get Webhook statuses.
 *
 * @since  2.3.0
 * @return array
 */
function wc_get_webhook_statuses() {
	return apply_filters( 'woocommerce_webhook_statuses', array(
		'active'   => __( 'Active', 'woocommerce' ),
		'paused'   => __( 'Paused', 'woocommerce' ),
		'disabled' => __( 'Disabled', 'woocommerce' ),
	) );
}

/**
 * Load webhooks.
 *
 * @since  3.2.0
 * @return bool
 */
function wc_load_webhooks() {
	$data_store = WC_Data_Store::load( 'webhook' );
	$webhooks   = $data_store->get_webhooks_ids();
	$loaded     = false;

	foreach ( $webhooks as $webhook_id ) {
		$webhook = new WC_Webhook( $webhook_id );
		$webhook->enqueue();
		$loaded = true;
	}

	return $loaded;
}