WordPress柔性供应链软件开发中的事件驱动架构实现教程

引言：为什么柔性供应链需要事件驱动架构

在当今快速变化的商业环境中，柔性供应链系统需要能够实时响应库存变化、订单波动和物流异常。传统同步架构往往导致系统耦合度高、扩展性差。事件驱动架构(Event-Driven Architecture, EDA)通过解耦系统组件，使供应链各环节能够异步通信，显著提升系统的响应能力和可扩展性。

本教程将指导您在WordPress环境中实现一个基于事件驱动的柔性供应链系统。我们将创建一个库存管理模块，当库存变化时自动触发采购订单生成、供应商通知和物流安排等后续流程。

环境准备与基础配置

1. WordPress插件基础结构

首先创建供应链插件的基本结构：

<?php
/**
 * Plugin Name: 柔性供应链管理系统
 * Description: 基于事件驱动的WordPress柔性供应链解决方案
 * Version: 1.0.0
 * Author: 供应链开发团队
 */

// 防止直接访问
if (!defined('ABSPATH')) {
    exit;
}

// 定义插件常量
define('FSC_SUPPLY_VERSION', '1.0.0');
define('FSC_SUPPLY_PLUGIN_DIR', plugin_dir_path(__FILE__));
define('FSC_SUPPLY_PLUGIN_URL', plugin_dir_url(__FILE__));

// 初始化插件
class FlexibleSupplyChain {
    
    private static $instance = null;
    private $event_dispatcher;
    
    public static function get_instance() {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    private function __construct() {
        $this->init_hooks();
        $this->init_event_system();
    }
    
    private function init_hooks() {
        // 激活/停用钩子
        register_activation_hook(__FILE__, array($this, 'activate'));
        register_deactivation_hook(__FILE__, array($this, 'deactivate'));
        
        // 初始化动作
        add_action('plugins_loaded', array($this, 'init'));
    }
    
    public function activate() {
        // 创建必要的数据库表
        $this->create_database_tables();
        
        // 初始化默认配置
        $this->init_default_settings();
    }
    
    public function deactivate() {
        // 清理临时数据
        $this->cleanup_temporary_data();
    }
    
    public function init() {
        // 加载文本域
        load_plugin_textdomain('flexible-supply-chain', false, dirname(plugin_basename(__FILE__)) . '/languages');
        
        // 初始化各模块
        $this->init_modules();
    }
    
    // 其他方法将在后续实现...
}

// 启动插件
FlexibleSupplyChain::get_instance();
?>

2. 数据库表结构设计

// 数据库表创建方法
private function create_database_tables() {
    global $wpdb;
    
    $charset_collate = $wpdb->get_charset_collate();
    
    // 事件日志表
    $events_table = $wpdb->prefix . 'fsc_events';
    $events_sql = "CREATE TABLE IF NOT EXISTS $events_table (
        id bigint(20) NOT NULL AUTO_INCREMENT,
        event_name varchar(100) NOT NULL,
        event_data longtext NOT NULL,
        event_source varchar(100) DEFAULT '',
        status varchar(20) DEFAULT 'pending',
        created_at datetime DEFAULT CURRENT_TIMESTAMP,
        processed_at datetime NULL,
        PRIMARY KEY (id),
        KEY event_name (event_name),
        KEY status (status),
        KEY created_at (created_at)
    ) $charset_collate;";
    
    // 库存表
    $inventory_table = $wpdb->prefix . 'fsc_inventory';
    $inventory_sql = "CREATE TABLE IF NOT EXISTS $inventory_table (
        id bigint(20) NOT NULL AUTO_INCREMENT,
        product_id bigint(20) NOT NULL,
        sku varchar(100) NOT NULL,
        current_stock int(11) DEFAULT 0,
        reorder_level int(11) DEFAULT 10,
        safety_stock int(11) DEFAULT 5,
        last_updated datetime DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (id),
        UNIQUE KEY sku (sku),
        KEY product_id (product_id)
    ) $charset_collate;";
    
    // 执行SQL
    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($events_sql);
    dbDelta($inventory_sql);
}

事件驱动架构核心实现

3. 事件调度器设计

事件调度器是EDA架构的核心，负责事件的发布、路由和处理：

class EventDispatcher {
    
    private $listeners = [];
    private $event_queue = [];
    private $is_processing = false;
    
    /**
     * 注册事件监听器
     * @param string $event_name 事件名称
     * @param callable $listener 监听器回调函数
     * @param int $priority 优先级
     */
    public function add_listener($event_name, $listener, $priority = 10) {
        if (!isset($this->listeners[$event_name])) {
            $this->listeners[$event_name] = [];
        }
        
        $this->listeners[$event_name][] = [
            'callback' => $listener,
            'priority' => $priority
        ];
        
        // 按优先级排序
        usort($this->listeners[$event_name], function($a, $b) {
            return $a['priority'] - $b['priority'];
        });
        
        return $this;
    }
    
    /**
     * 发布事件
     * @param string $event_name 事件名称
     * @param mixed $event_data 事件数据
     * @param string $source 事件源
     */
    public function dispatch($event_name, $event_data = [], $source = '') {
        global $wpdb;
        
        // 记录事件到数据库
        $event_log = [
            'event_name' => $event_name,
            'event_data' => maybe_serialize($event_data),
            'event_source' => $source,
            'status' => 'pending'
        ];
        
        $wpdb->insert($wpdb->prefix . 'fsc_events', $event_log);
        $event_id = $wpdb->insert_id;
        
        // 添加到处理队列
        $this->event_queue[] = [
            'id' => $event_id,
            'name' => $event_name,
            'data' => $event_data
        ];
        
        // 异步处理事件（通过WordPress调度）
        if (!$this->is_processing) {
            $this->is_processing = true;
            add_action('shutdown', [$this, 'process_queue']);
        }
        
        return $event_id;
    }
    
    /**
     * 处理事件队列
     */
    public function process_queue() {
        while (!empty($this->event_queue)) {
            $event = array_shift($this->event_queue);
            $this->process_event($event);
        }
        $this->is_processing = false;
    }
    
    /**
     * 处理单个事件
     */
    private function process_event($event) {
        global $wpdb;
        
        $event_id = $event['id'];
        $event_name = $event['name'];
        $event_data = $event['data'];
        
        // 更新事件状态为处理中
        $wpdb->update(
            $wpdb->prefix . 'fsc_events',
            ['status' => 'processing', 'processed_at' => current_time('mysql')],
            ['id' => $event_id]
        );
        
        // 执行所有监听器
        if (isset($this->listeners[$event_name])) {
            foreach ($this->listeners[$event_name] as $listener) {
                try {
                    call_user_func($listener['callback'], $event_data, $event_name);
                } catch (Exception $e) {
                    // 记录错误但不中断其他监听器
                    error_log('事件处理错误: ' . $e->getMessage());
                }
            }
        }
        
        // 更新事件状态为已完成
        $wpdb->update(
            $wpdb->prefix . 'fsc_events',
            ['status' => 'completed'],
            ['id' => $event_id]
        );
    }
}

4. 库存事件处理器实现

class InventoryEventHandler {
    
    private $dispatcher;
    
    public function __construct($dispatcher) {
        $this->dispatcher = $dispatcher;
        $this->register_handlers();
    }
    
    private function register_handlers() {
        // 监听库存变化事件
        $this->dispatcher->add_listener(
            'inventory.updated', 
            [$this, 'handle_inventory_update'],
            10
        );
        
        // 监听低库存警告事件
        $this->dispatcher->add_listener(
            'inventory.low_stock',
            [$this, 'handle_low_stock'],
            5  // 较高优先级
        );
        
        // 监听库存耗尽事件
        $this->dispatcher->add_listener(
            'inventory.out_of_stock',
            [$this, 'handle_out_of_stock'],
            1  // 最高优先级
        );
    }
    
    /**
     * 处理库存更新事件
     */
    public function handle_inventory_update($data) {
        global $wpdb;
        
        $product_id = $data['product_id'];
        $new_stock = $data['new_stock'];
        $old_stock = $data['old_stock'];
        
        // 获取库存配置
        $inventory = $wpdb->get_row($wpdb->prepare(
            "SELECT * FROM {$wpdb->prefix}fsc_inventory WHERE product_id = %d",
            $product_id
        ));
        
        if (!$inventory) {
            return;
        }
        
        // 检查是否需要触发低库存事件
        if ($new_stock <= $inventory->reorder_level && $old_stock > $inventory->reorder_level) {
            $this->dispatcher->dispatch('inventory.low_stock', [
                'product_id' => $product_id,
                'current_stock' => $new_stock,
                'reorder_level' => $inventory->reorder_level,
                'sku' => $inventory->sku
            ], 'inventory_system');
        }
        
        // 检查是否需要触发缺货事件
        if ($new_stock <= 0 && $old_stock > 0) {
            $this->dispatcher->dispatch('inventory.out_of_stock', [
                'product_id' => $product_id,
                'sku' => $inventory->sku,
                'product_name' => get_the_title($product_id)
            ], 'inventory_system');
        }
        
        // 记录库存变化日志
        $this->log_inventory_change($product_id, $old_stock, $new_stock);
    }
    
    /**
     * 处理低库存事件
     */
    public function handle_low_stock($data) {
        // 自动生成采购订单
        $this->generate_purchase_order($data);
        
        // 通知采购部门
        $this->notify_purchasing_department($data);
        
        // 更新产品状态
        $this->update_product_status($data['product_id'], 'low_stock');
    }
    
    /**
     * 处理缺货事件
     */
    public function handle_out_of_stock($data) {
        // 紧急采购流程
        $this->initiate_emergency_purchase($data);
        
        // 通知销售团队
        $this->notify_sales_team($data);
        
        // 更新网站产品状态
        $this->update_product_availability($data['product_id'], false);
        
        // 触发供应商评估
        $this->dispatcher->dispatch('supplier.evaluation_required', [
            'product_id' => $data['product_id'],
            'reason' => 'frequent_out_of_stock'
        ], 'inventory_system');
    }
    
    /**
     * 生成采购订单
     */
    private function generate_purchase_order($data) {
        global $wpdb;
        
        // 计算采购数量（基于安全库存和需求预测）
        $order_quantity = $this->calculate_order_quantity($data);
        
        // 选择供应商
        $supplier_id = $this->select_supplier($data['product_id']);
        
        // 创建采购订单记录
        $wpdb->insert("{$wpdb->prefix}fsc_purchase_orders", [
            'product_id' => $data['product_id'],
            'supplier_id' => $supplier_id,
            'quantity' => $order_quantity,
            'status' => 'pending',
            'created_at' => current_time('mysql')
        ]);
        
        // 触发采购订单创建事件
        $this->dispatcher->dispatch('purchase_order.created', [
            'product_id' => $data['product_id'],
            'supplier_id' => $supplier_id,
            'quantity' => $order_quantity
        ], 'inventory_system');
    }
    
    // 其他辅助方法...
}

供应链业务流程集成

5. WooCommerce集成示例

class WooCommerceIntegration {
    
    private $dispatcher;
    
    public function __construct($dispatcher) {
        $this->dispatcher = $dispatcher;
        $this->init_hooks();
    }
    
    private function init_hooks() {
        // 监听WooCommerce订单状态变化
        add_action('woocommerce_order_status_changed', 
            [$this, 'handle_order_status_change'], 10, 4);
        
        // 监听库存变化
        add_action('woocommerce_product_set_stock', 
            [$this, 'handle_stock_change'], 10, 1);
        
        // 监听新订单
        add_action('woocommerce_new_order', 
            [$this, 'handle_new_order'], 10, 1);
    }
    
    /**
     * 处理订单状态变化
     */
    public function handle_order_status_change($order_id, $old_status, $new_status, $order) {
        // 当订单完成时，触发库存更新事件
        if ($new_status === 'completed') {
            foreach ($order->get_items() as $item) {
                $product_id = $item->get_product_id();
                $quantity = $item->get_quantity();
                
                // 获取当前库存
                $product = wc_get_product($product_id);
                $old_stock = $product->get_stock_quantity();
                $new_stock = $old_stock - $quantity;
                
                // 发布库存更新事件
                $this->dispatcher->dispatch('inventory.updated', [
                    'product_id' => $product_id,
                    'order_id' => $order_id,
                    'old_stock' => $old_stock,
                    'new_stock' => $new_stock,
                    'change_reason' => 'order_completed',
                    'change_quantity' => -$quantity
                ], 'woocommerce');
            }
            
            // 触发订单完成事件
            $this->dispatcher->dispatch('order.completed', [
                'order_id' => $order_id,
                'customer_id' => $order->get_customer_id(),
                'total' => $order->get_total()
            ], 'woocommerce');
        }
    }
    
    /**
     * 处理库存变化
     */
    public function handle_stock_change($product) {
        $product_id = $product->get_id();
        
        // 这里可以添加额外的库存处理逻辑
        // 例如：同步到ERP系统、更新预测模型等
        
        $this->dispatcher->dispatch('inventory.sync_required', [
            'product_id' => $product_id,
            'stock_quantity' => $product->get_stock_quantity()
        ], 'woocommerce');
    }
}

监控与错误处理

6. 事件监控面板

class EventMonitor {
    
    public static function render_dashboard() {
        global $wpdb;
        
        // 获取最近事件
        $recent_events = $wpdb->get_results("
            SELECT * FROM {$wpdb->prefix}fsc_events 
            ORDER BY created_at DESC 
            LIMIT 50
        ");
        
        // 获取事件统计
        $event_stats = $wpdb->get_results("
            SELECT 
                event_name,
                status,
                COUNT(*) as count,
                DATE(created_at) as date
            FROM {$wpdb->prefix}fsc_events 
            WHERE created_at >= DATE_SUB(NOW(), INTERVAL 7 DAY)
            GROUP BY event_name, status, DATE(created_at)
            ORDER BY date DESC
        ");
        
        ?>
        <div class="wrap">
            <h1>供应链事件监控面板</h1>
            
            <div class="event-stats">
                <h2>事件统计 (最近7天)</h2>
                <table class="wp-list-table widefat fixed striped">
                    <thead>
                        <tr>
                            <th>事件名称</th>
                            <th>状态</th>
                            <th>日期</th>
                            <th>数量</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php foreach ($event_stats as $stat): ?>
                        <tr>
                            <td><?php echo esc_html($stat->event_name); ?></td>
                            <td>
                                <span class="event-status status-<?php echo esc_attr($stat->status); ?>">
                                    <?php echo esc_html($stat->status); ?>
                                </span>
                            </td>
                            <td><?php echo esc_html($stat->date); ?></td>
                            <td><?php echo esc_html($stat->count); ?></td>
                        </tr>
                        <?php endforeach; ?>
                    </tbody>
                </table>
            </div>
            
            <div class="recent-events">
                <h2>最近事件</h2>
                <table class="wp-list-table widefat fixed striped">
                    <thead>
                        <tr>
                            <th>ID</th>
                            <th>事件名称</th>
                            <th>事件源</th>
                            <th>状态</th>
                            <th>创建时间</th>
                            <th>处理时间</th>
                        </tr>

                </thead>
                <tbody>
                    <?php foreach ($recent_events as $event): 
                        $event_data = maybe_unserialize($event->event_data);
                    ?>
                    <tr>
                        <td><?php echo esc_html($event->id); ?></td>
                        <td>
                            <strong><?php echo esc_html($event->event_name); ?></strong>
                            <?php if (is_array($event_data) && !empty($event_data)): ?>
                            <button class="button button-small view-details" 
                                    data-event-id="<?php echo esc_attr($event->id); ?>">
                                查看详情
                            </button>
                            <?php endif; ?>
                        </td>
                        <td><?php echo esc_html($event->event_source); ?></td>
                        <td>
                            <span class="event-status status-<?php echo esc_attr($event->status); ?>">
                                <?php echo esc_html($event->status); ?>
                            </span>
                        </td>
                        <td><?php echo esc_html($event->created_at); ?></td>
                        <td><?php echo esc_html($event->processed_at ?: '未处理'); ?></td>
                    </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    </div>
    
    <script>
    jQuery(document).ready(function($) {
        $('.view-details').on('click', function() {
            var eventId = $(this).data('event-id');
            
            $.ajax({
                url: ajaxurl,
                type: 'POST',
                data: {
                    action: 'fsc_get_event_details',
                    event_id: eventId,
                    nonce: '<?php echo wp_create_nonce('fsc_event_nonce'); ?>'
                },
                success: function(response) {
                    if (response.success) {
                        // 显示事件详情模态框
                        $('#event-details-modal').remove();
                        $('body').append(response.data.html);
                        $('#event-details-modal').show();
                    }
                }
            });
        });
    });
    </script>
    <?php
}

public static function get_event_details_ajax() {
    check_ajax_referer('fsc_event_nonce', 'nonce');
    
    global $wpdb;
    $event_id = intval($_POST['event_id']);
    
    $event = $wpdb->get_row($wpdb->prepare(
        "SELECT * FROM {$wpdb->prefix}fsc_events WHERE id = %d",
        $event_id
    ));
    
    if (!$event) {
        wp_die();
    }
    
    $event_data = maybe_unserialize($event->event_data);
    
    ob_start();
    ?>
    <div id="event-details-modal" class="fsc-modal" style="display: none;">
        <div class="fsc-modal-content">
            <div class="fsc-modal-header">
                <h3>事件详情 #<?php echo esc_html($event->id); ?></h3>
                <span class="fsc-modal-close">&times;</span>
            </div>
            <div class="fsc-modal-body">
                <table class="widefat">
                    <tr>
                        <th width="150">事件名称</th>
                        <td><?php echo esc_html($event->event_name); ?></td>
                    </tr>
                    <tr>
                        <th>事件源</th>
                        <td><?php echo esc_html($event->event_source); ?></td>
                    </tr>
                    <tr>
                        <th>状态</th>
                        <td>
                            <span class="event-status status-<?php echo esc_attr($event->status); ?>">
                                <?php echo esc_html($event->status); ?>
                            </span>
                        </td>
                    </tr>
                    <tr>
                        <th>创建时间</th>
                        <td><?php echo esc_html($event->created_at); ?></td>
                    </tr>
                    <tr>
                        <th>处理时间</th>
                        <td><?php echo esc_html($event->processed_at ?: '未处理'); ?></td>
                    </tr>
                    <tr>
                        <th>事件数据</th>
                        <td>
                            <pre style="background: #f5f5f5; padding: 10px; overflow: auto;">

<?php echo esc_html(print_r($event_data, true)); ?>

                            </pre>
                        </td>
                    </tr>
                </table>
            </div>
        </div>
    </div>
    
    <style>
    .fsc-modal {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 9999;
    }
    .fsc-modal-content {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        background: white;
        width: 80%;
        max-width: 800px;
        max-height: 80vh;
        overflow-y: auto;
    }
    .fsc-modal-header {
        padding: 15px;
        background: #0073aa;
        color: white;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .fsc-modal-close {
        cursor: pointer;
        font-size: 24px;
    }
    .fsc-modal-body {
        padding: 20px;
    }
    .event-status {
        padding: 3px 8px;
        border-radius: 3px;
        font-size: 12px;
        font-weight: bold;
    }
    .status-pending { background: #ffb900; color: #000; }
    .status-processing { background: #00a0d2; color: #fff; }
    .status-completed { background: #46b450; color: #fff; }
    .status-failed { background: #dc3232; color: #fff; }
    </style>
    
    <script>
    jQuery(document).ready(function($) {
        $(document).on('click', '.fsc-modal-close', function() {
            $('#event-details-modal').remove();
        });
        
        $(document).on('click', function(e) {
            if ($(e.target).is('#event-details-modal')) {
                $('#event-details-modal').remove();
            }
        });
    });
    </script>
    <?php
    
    $html = ob_get_clean();
    
    wp_send_json_success(array('html' => $html));
}

}

### 7. 错误处理与重试机制

class ErrorHandler {

private $dispatcher;
private $max_retries = 3;
private $retry_delay = 300; // 5分钟

public function __construct($dispatcher) {
    $this->dispatcher = $dispatcher;
    $this->init_error_handling();
}

private function init_error_handling() {
    // 监听所有事件处理错误
    $this->dispatcher->add_listener('event.processing_error', 
        [$this, 'handle_processing_error'], 100);
    
    // 设置异常处理器
    set_exception_handler([$this, 'global_exception_handler']);
    
    // 设置错误处理器
    set_error_handler([$this, 'global_error_handler']);
}

/**
 * 处理事件处理错误
 */
public function handle_processing_error($error_data) {
    global $wpdb;
    
    $event_id = $error_data['event_id'];
    $error_message = $error_data['error_message'];
    $retry_count = $error_data['retry_count'] ?? 0;
    
    // 记录错误日志
    $this->log_error($event_id, $error_message, $retry_count);
    
    // 检查是否达到最大重试次数
    if ($retry_count < $this->max_retries) {
        // 安排重试
        $this->schedule_retry($event_id, $retry_count + 1);
    } else {
        // 标记事件为失败
        $this->mark_event_failed($event_id, $error_message);
        
        // 触发失败通知
        $this->notify_administrators($event_id, $error_message);
    }
}

/**
 * 安排事件重试
 */
private function schedule_retry($event_id, $retry_count) {
    $retry_time = time() + ($this->retry_delay * $retry_count);
    
    // 使用WordPress定时任务
    wp_schedule_single_event($retry_time, 'fsc_retry_event', array(
        'event_id' => $event_id,
        'retry_count' => $retry_count
    ));
    
    // 记录重试计划
    $this->log_retry_schedule($event_id, $retry_count, $retry_time);
}

/**
 * 重试事件处理
 */
public function retry_event($event_id, $retry_count) {
    global $wpdb;
    
    // 获取事件数据
    $event = $wpdb->get_row($wpdb->prepare(
        "SELECT * FROM {$wpdb->prefix}fsc_events WHERE id = %d",
        $event_id
    ));
    
    if (!$event || $event->status !== 'processing') {
        return;
    }
    
    try {
        // 重新处理事件
        $event_data = maybe_unserialize($event->event_data);
        
        // 这里可以添加特定的重试逻辑
        // 例如：重新连接数据库、清理临时文件等
        
        // 触发事件重试
        $this->dispatcher->dispatch($event->event_name, $event_data, 'retry_system');
        
    } catch (Exception $e) {
        // 如果重试失败，记录错误
        $this->dispatcher->dispatch('event.processing_error', [
            'event_id' => $event_id,
            'error_message' => $e->getMessage(),
            'retry_count' => $retry_count
        ], 'error_handler');
    }
}

/**
 * 全局异常处理器
 */
public function global_exception_handler($exception) {
    error_log('供应链系统异常: ' . $exception->getMessage());
    
    // 发送错误报告
    $this->send_error_report($exception);
    
    // 如果是在事件处理中，记录事件ID
    if (isset($GLOBALS['current_processing_event'])) {
        $this->dispatcher->dispatch('event.processing_error', [
            'event_id' => $GLOBALS['current_processing_event'],
            'error_message' => $exception->getMessage(),
            'retry_count' => 0
        ], 'global_handler');
    }
}

/**
 * 全局错误处理器
 */
public function global_error_handler($errno, $errstr, $errfile, $errline) {
    // 只处理严重错误
    if (!(error_reporting() & $errno)) {
        return false;
    }
    
    $error_types = array(
        E_ERROR => '致命错误',
        E_WARNING => '警告',
        E_PARSE => '解析错误',
        E_NOTICE => '通知',
        E_CORE_ERROR => '核心错误',
        E_CORE_WARNING => '核心警告',
        E_COMPILE_ERROR => '编译错误',
        E_COMPILE_WARNING => '编译警告',
        E_USER_ERROR => '用户错误',
        E_USER_WARNING => '用户警告',
        E_USER_NOTICE => '用户通知',
        E_STRICT => '严格标准',
        E_RECOVERABLE_ERROR => '可恢复错误',
        E_DEPRECATED => '弃用警告',
        E_USER_DEPRECATED => '用户弃用警告'
    );
    
    $error_type = isset($error_types[$errno]) ? $error_types[$errno] : '未知错误';
    
    $error_message = sprintf(
        '[%s] %s in %s on line %d',
        $error_type,
        $errstr,
        $errfile,
        $errline
    );
    
    error_log('供应链系统错误: ' . $error_message);
    
    // 对于严重错误，发送通知
    if (in_array($errno, [E_ERROR, E_PARSE, E_CORE_ERROR, E_COMPILE_ERROR])) {
        $this->send_error_report(new ErrorException($error_message, 0, $errno, $errfile, $errline));
    }
    
    return true;
}

/**
 * 发送错误报告
 */
private function send_error_report($exception) {
    $admin_email = get_option('admin_email');
    $site_name = get_bloginfo('name');
    
    $subject = sprintf('[%s] 供应链系统错误报告', $site_name);
    
    $message = sprintf(
        "网站: %sn" .
        "时间: %sn" .
        "错误类型: %sn" .
        "错误信息: %sn" .
        "文件: %sn" .
        "行号: %dn" .
        "堆栈跟踪:n%sn",
        $site_name,
        current_time('mysql'),
        get_class($exception),
        $exception->getMessage(),
        $exception->getFile(),
        $exception->getLine(),
        $exception->getTraceAsString()
    );
    
    wp_mail($admin_email, $subject, $message);
}

}

## 性能优化与扩展

### 8. 事件批处理与队列优化

class EventBatchProcessor {

private $batch_size = 50;
private $processing_interval = 60; // 秒

public function __construct() {
    // 初始化批处理定时任务
    add_action('init', [$this, 'init_batch_processing']);
}

public function init_batch_processing() {
    if (!wp_next_scheduled('fsc_process_event_batch')) {
        wp_schedule_event(time(), 'five_minutes', 'fsc_process_event_batch');
    }
    
    add_action('fsc_process_event_batch', [$this, 'process_batch']);
}

/**
 * 批量处理事件
 */
public function process_batch() {
    global $wpdb;
    
    // 获取待处理的事件批次
    $pending_events = $wpdb->get_results($wpdb->prepare(
        "SELECT * FROM {$wpdb->prefix}fsc_events 
         WHERE status = 'pending' 
         ORDER BY created_at ASC 
         LIMIT %d",
        $this->batch_size
    ));
    
    if (empty($pending_events)) {
        return;
    }
    
    // 批量更新状态为处理中
    $event_ids = array_column($pending_events, 'id');
    $placeholders = implode(',', array_fill(0, count($event_ids), '%d'));
    
    $wpdb->query($wpdb->prepare(
        "UPDATE {$wpdb->prefix}fsc_events 
         SET status = 'processing', processed_at = %s 
         WHERE id IN ($placeholders)",
        array_merge([current_time('mysql')], $event_ids)
    ));
    
    // 批量处理事件
    foreach ($pending_events as $event) {
        try {
            $this->process_single_event($event);
        } catch (Exception $e) {
            // 记录单个事件失败，但不影响批次中的其他事件
            error_log('批处理事件失败: ' . $e->getMessage());
        }
    }
}

/**
 * 处理单个事件
 */
private function process_single_event($event) {
    global $wpdb;
    
    $event_data = maybe_unserialize($event->event_data);
    
    // 根据事件类型调用相应的处理器
    switch ($event->event_name) {
        case 'inventory.updated':
            $this->handle_batch_inventory_update($event_data);
            break;
            
        case 'order.completed':
            $this->handle_batch_order_completed($event_data);
            break;
            
        case 'purchase_order.created':
            $this->handle_batch_purchase_order($event_data);
            break;
            
        default:
            // 默认处理器
            do_action('fsc_batch_process_' . $event->event_name, $event_data);
    }
    
    // 更新事件状态为已完成
    $wpdb->update(
        $wpdb->prefix . 'fsc_events',
        ['status' => 'completed'],
        ['id' => $event->id]
    );
}

/**
 * 批量处理库存更新
 */
private function handle_batch_inventory_update($data) {
    // 批量更新库存统计
    $this->update_inventory_statistics($data);
    
    // 批量更新预测模型
    $this->update_forecast_model($data);
    
    // 触发相关事件
    if (isset($data['product_id']) && isset($data['new_stock'])) {
        // 检查是否需要触发低库存事件
        $this->check_low_stock_batch($data['product_id'], $data['new_stock']);
    }
}

/**
 * 批量检查低库存
 */
private function check_low_stock_batch($product_ids, $stock_levels) {
    global $wpdb;
    
    // 批量查询库存配置
    $placeholders = implode(',', array_fill(0, count($product_ids), '%d'));
    $inventory_configs = $wpdb->get_results($wpdb->prepare(
        "SELECT product_id, reorder_level FROM {$wpdb->prefix}fsc_inventory 
         WHERE product_id IN ($placeholders)",
        $product_ids
    ));
    
    // 批量检查低库存
    $low_stock_products = [];
    foreach ($inventory_configs as $config) {
        if ($stock_levels[$config->product_id] <= $config->reorder_level) {
            $low_stock_products[] = $config->product_id;
        }
    }
    
    // 批量触发低库存事件
    if (!empty($low_stock_products)) {
        do_action('fsc_batch_low_stock', $low_stock_products);
    }
}

}

## 部署与维护建议

### 9. 系统部署配置

class DeploymentConfig {

public static function get_re