SOA2

ServiceOrchestrator.java

@@ -0,0 +1,101 @@
+package com.soa.orchestration;
+
+import com.soa.bus.ServiceBus;
+import com.soa.monitoring.ServiceMonitor;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 服务编排器 - 负责组合多个服务来完成复杂的业务流程
+ */
+public class ServiceOrchestrator {
+    private static final Logger logger = LogManager.getLogger(ServiceOrchestrator.class);
+    private final ServiceBus serviceBus;
+    private final ServiceMonitor monitor;
+    
+    public ServiceOrchestrator() {
+        this.serviceBus = ServiceBus.getInstance();
+        this.monitor = ServiceMonitor.getInstance();
+    }
+    
+    /**
+     * 执行订单处理流程
+     * 1. 检查用户
+     * 2. 创建订单
+     * 3. 处理支付
+     */
+    public String processOrder(String userId, String orderInfo, String paymentDetails) {
+        logger.info("Starting order processing flow for user: {}", userId);
+        
+        List<ProcessStep> steps = new ArrayList<>();
+        steps.add(new ProcessStep("userService", "checkUser:" + userId));
+        steps.add(new ProcessStep("orderService", "createOrder:" + orderInfo));
+        steps.add(new ProcessStep("paymentService", "processPayment:" + paymentDetails));
+        
+        StringBuilder result = new StringBuilder();
+        boolean allSuccessful = true;
+        
+        for (ProcessStep step : steps) {
+            try {
+                long startTime = monitor.startMonitoring(step.serviceName);
+                String stepResult = serviceBus.callService(step.serviceName, step.request);
+                
+                // 检查执行结果是否成功
+                boolean success = !stepResult.contains("Error");
+                monitor.endMonitoring(step.serviceName, startTime, success);
+                
+                result.append(step.serviceName).append(": ").append(stepResult).append("\n");
+                
+                if (!success) {
+                    allSuccessful = false;
+                    logger.error("Step failed: {}", step.serviceName);
+                    break; // 失败时中断流程
+                }
+                
+            } catch (Exception e) {
+                monitor.endMonitoring(step.serviceName, System.currentTimeMillis(), false);
+                result.append(step.serviceName).append(": Error - ").append(e.getMessage()).append("\n");
+                allSuccessful = false;
+                logger.error("Exception in step {}: {}", step.serviceName, e.getMessage());
+                break;
+            }
+        }
+        
+        if (allSuccessful) {
+            result.append("Order processing completed successfully");
+        } else {
+            result.append("Order processing failed");
+        }
+        
+        return result.toString();
+    }
+    
+    /**
+     * 创建自定义流程
+     */
+    public String executeCustomFlow(List<ProcessStep> steps) {
+        StringBuilder result = new StringBuilder();
+        
+        for (ProcessStep step : steps) {
+            String stepResult = serviceBus.callService(step.serviceName, step.request);
+            result.append(step.serviceName).append(": ").append(stepResult).append("\n");
+        }
+        
+        return result.toString();
+    }
+    
+    /**
+     * 流程步骤内部类
+     */
+    public static class ProcessStep {
+        public final String serviceName;
+        public final String request;
+        
+        public ProcessStep(String serviceName, String request) {
+            this.serviceName = serviceName;
+            this.request = request;
+        }
+    }
+}