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Mga Advanced nga Sample sa Code

Kini mga example para ipakita ang advanced nga mga pattern sa pag-integrate uban sa Ultimate Multisite.

Dynamic Pricing Engine​

Isang rules-based pricing engine nga nagapaggamit og volume (daghan), loyalty (pagka-loyal), ug seasonal discounts:

class Dynamic_Pricing_Engine {

    public function __construct() {
        add_filter('wu_cart_total', [$this, 'apply_dynamic_pricing'], 20, 2);
    }

    public function apply_dynamic_pricing($total, $cart) {
        $customer = $cart->get_customer();
        $rules = $this->get_pricing_rules();

        foreach ($rules as $rule) {
            if ($this->rule_applies($rule, $cart, $customer)) {
                $total = $this->apply_rule($rule, $total, $cart);
            }
        }

        return $total;
    }

    private function get_pricing_rules() {
        return [
            [
                'type' => 'volume_discount',
                'condition' => ['total_greater_than' => 100],
                'discount' => 0.1
            ],
            [
                'type' => 'loyalty_discount',
                'condition' => ['customer_tenure_months' => 12],
                'discount' => 0.15
            ],
            [
                'type' => 'seasonal_promo',
                'condition' => ['date_range' => ['2024-11-01', '2024-12-31']],
                'discount' => 0.2
            ]
        ];
    }

    private function rule_applies($rule, $cart, $customer) {
        foreach ($rule['condition'] as $condition => $value) {
            switch ($condition) {
                case 'total_greater_than':
                    if ($cart->get_total() <= $value) return false;
                    break;
                case 'customer_tenure_months':
                    if (!$customer || $customer->get_months_active() < $value) return false;
                    break;
                case 'date_range':
                    $now = current_time('Y-m-d');
                    if ($now < $value[0] || $now > $value[1]) return false;
                    break;
            }
        }
        return true;
    }

    private function apply_rule($rule, $total, $cart) {
        $discount_amount = $total * $rule['discount'];

        wu_log_add('pricing', sprintf(
            'Applied %s rule: %.2f discount on total %.2f',
            $rule['type'],
            $discount_amount,
            $total
        ));

        return $total - $discount_amount;
    }
}

new Dynamic_Pricing_Engine();

Advanced Site Provisioning​

Automomatikong i-configure ang bag-ong mga site uban sa mga plugin, SSL, CDN, backups, ug monitoring base sa mga feature sa inyong plano:

class Advanced_Site_Provisioner {

public function __construct() {
    add_action('wu_site_published', [$this, 'provision_site'], 10, 2);
}

public function provision_site($site, $membership) {
    $plan = $membership->get_plan();

    switch_to_blog($site->get_id());

    // Install plugins based on plan
    $this->install_plan_plugins($plan);

    // Configure SSL
    if ($plan->has_feature('ssl')) {
        $this->setup_ssl($site);
    }

    // Setup CDN
    if ($plan->has_feature('cdn')) {
        $this->configure_cdn($site);
    }

    // Configure backups
    if ($plan->has_feature('backups')) {
        $this->setup_automated_backups($site, $plan->get_backup_frequency());
    }

    // Setup monitoring
    $this->setup_site_monitoring($site, $membership->get_customer());

    restore_current_blog();

    $this->send_provisioning_complete_email($site, $membership);
}

private function install_plan_plugins($plan) {
    $plugins = $plan->get_included_plugins();

    foreach ($plugins as $plugin_slug) {
        if ($this->plugin_exists($plugin_slug)) {
            activate_plugin($plugin_slug);
            $this->configure_plugin($plugin_slug, $plan);
        }
    }
}

private function setup_ssl($site) {
    $ssl_service = new SSL_Provider_API();
    $result = $ssl_service->request_certificate($site->get_domain());

    if ($result->success) {
        $site->add_meta('ssl_certificate_id', $result->certificate_id);
        $site->add_meta('ssl_status', 'active');
    }
}

private function configure_cdn($site) {
    $cdn_service = new CDN_Provider_API();

    $zone = $cdn_service->create_zone([
        'name' => $site->get_domain(),
        'type' => 'full'
    ]);

    if ($zone->success) {
        $site->add_meta('cdn_zone_id', $zone->id);
        $this->update_cdn_dns($site, $zone);
    }
}

private function setup_automated_backups($site, $frequency) {
    $backup_service = new Backup_Provider_API();

    $schedule = $backup_service->create_schedule([
        'site_id' => $site->get_id(),
        'frequency' => $frequency,
        'retention' => 30
    ]);

    $site->add_meta('backup_schedule_id', $schedule->id);
}

private function setup_site_monitoring($site, $customer) {
    $monitoring_service = new Monitoring_API();

    $monitor = $monitoring_service->create_monitor([
        'url' => $site->get_domain(),
        'customer_email' => $customer->get_email(),
        'check_interval' => 300
    ]);

    $site->add_meta('monitoring_id', $monitor->id);
}

}

new Advanced_Site_Provisioner();

Custom Limitations System​

Subayhi ug ipatuman ang mga limitasyon sa resources uban ang mga warning base sa paggamit:

class Advanced_Limitations {

    public function __construct() {
        add_filter('wu_limitation_plugins_allowed', [$this, 'check_plugin_limit'], 10, 3);
        add_filter('wu_limitation_storage_allowed', [$this, 'check_storage_limit'], 10, 3);
    }

    public function check_plugin_limit($allowed, $site_id, $membership) {
        $plan = $membership->get_plan();
        $max_plugins = $plan->get_limit('max_plugins', 10);

        switch_to_blog($site_id);
        $active_plugins = count(get_option('active_plugins', []));
        restore_current_blog();

        if ($active_plugins >= $max_plugins) {
            $this->send_limit_warning($membership->get_customer(), 'plugins', $max_plugins);
            return false;
        }

        return true;
    }

    public function check_storage_limit($allowed, $site_id, $membership) {
        $plan = $membership->get_plan();
        $max_storage = $plan->get_limit('max_storage_mb', 1000);
        $current_usage = $this->get_site_storage_usage($site_id);

        if ($current_usage >= $max_storage) {
            wu_log_add('limitations', sprintf(
                'Site %d naabot sa limit sa storage: %dMB/%dMB',
                $site_id,
                $current_usage,
                $max_storage
            ));
            return false;
        }

        if ($current_usage >= ($max_storage * 0.8)) {
            $this->send_storage_warning(
                $membership->get_customer(),
                $current_usage,
                $max_storage
            );
        }

        return true;
    }

    private function get_site_storage_usage($site_id) {
        $upload_dir = wp_upload_dir();
        $size = 0;
        $files = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($upload_dir['basedir'])
        );

        foreach ($files as $file) {
            if ($file->isFile()) {
                $size += $file->getSize();
            }
        }

        return round($size / 1024 / 1024, 2);
    }

    private function send_limit_warning($customer, $limit_type, $limit_value) {
        wu_mail_customer($customer, 'limit_warning', [
            'limit_type' => $limit_type,
            'limit_value' => $limit_value,
            'upgrade_url' => wu_get_current_url('upgrade')
        ]);
    }
}

new Advanced_Limitations();

BerlinDB Atomic Counter gamit ang increment_item()​

Ang Ultimate Multisite v2.6.1 nagdaghi og usa ka method nga gitawag og increment_item() sa BerlinDB Query class. Gamita kini para maghimo og luwas ug atomic increments sa mga numeric column nga walay problema sa "read-modify-write races" — maayo ni para sa counters, usage quotas, ug rate-limiting checks nga nagpadayon ubos sa concurrent requests.

Method signature​

/**
 * Atomically increment ang usa ka numeric column para sa usa ka specific item.
 *
 * @param int    $item_id   Primary key sa row nga i-update.
 * @param string $column    Ngalan sa column nga i-increment (kinahanglan numero).
 * @param int    $amount    Ang kantidad nga idadagdag. Gamita ang negative value para mag-decrement.
 *                          Default kay 1.
 * @return bool True kung malampuson, false kung kapakyasan o kung dili valid ang column.
 */
public function increment_item( int $item_id, string $column, int $amount = 1 ): bool;

Basic usage​

// Dugang og 1 sa column nga `api_calls` para sa membership ID 42.
$memberships = new WP_Ultimo\Database\Memberships\Memberships_Query();
$memberships->increment_item( 42, 'api_calls' );

// Dugang og 5 sa usa ka usage counter.
$memberships->increment_item( 42, 'api_calls', 5 );

// Bawasan (minus 1).
$memberships->increment_item( 42, 'api_calls', -1 );

Tracking API usage per membership​

Usa ka praktikal nga pama para ipatuman ang per-membership API rate limits:

class Membership_API_Limiter {

/** Maximum API calls allowed per billing cycle. */
const LIMIT = 500;

public function __construct() {
    add_filter( 'wu_is_api_enabled', [ $this, 'check_and_count' ], 10, 2 );
}

/**
 * I-reject ang request kung sobra na ang membership sa limit;
 * kung dili, i-count ang tawag atomically.
 *
 * @param bool   $enabled
 * @param object $context  Object nga adunay get_membership_id() method.
 * @return bool
 */
public function check_and_count( bool $enabled, $context ): bool {
    if ( ! $enabled ) {
        return false;
    }

    $membership_id = $context->get_membership_id();

    $memberships = new WP_Ultimo\Database\Memberships\Memberships_Query();
    $membership  = $memberships->get_item( $membership_id );

    if ( ! $membership ) {
        return false;
    }

    if ( (int) $membership->api_calls >= self::LIMIT ) {
        return false;  // Sobra na ang quota — i-reject.
    }

    // Atomic increment: luwas kini sa concurrent requests.
    $memberships->increment_item( $membership_id, 'api_calls' );

    return true;
}

}

new Membership_API_Limiter();

Ngano increment_item() imbes nga update_item()​

Ang usa ka basta-basta nga approach sa pagbasa-pag-usab-pagsulat (read-modify-write) dili luwas kung adunay daghang requests nga nagtrabaho sa samang higayon:

Dili luwas — race condition tali sa pagbasa ug pagsulat. $membership = $memberships->get_item( $membership_id ); $new_count = (int) $membership->api_calls + 1; $memberships->update_item( $membership_id, [ 'api_calls' => $new_count ] );

Dili gyud maayo kung duha ka requests ang mag-proseso og samang value ug pareho ang mosulat balik sa parehas nga incremented nga resulta, mao nga mawala usa sa mga count. Ang increment_item() naghatag og trabaho sa pag-compute sa database engine pinaagi sa usa lang nga UPDATE ... SET column = column + ? statement, nga naghimo sa operasyon nga natural nga atomic (walay maguba).