fix: avoid early handler post processor dependencies

modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/config/IngestCoreAutoConfiguration.java

@@ -43,8 +43,8 @@ public class IngestCoreAutoConfiguration {
     }
 
     @Bean
-    public AnnotationHandlerBeanPostProcessor annotationHandlerBeanPostProcessor(HandlerRegistry registry) {
+    public static AnnotationHandlerBeanPostProcessor annotationHandlerBeanPostProcessor() {
-        return new AnnotationHandlerBeanPostProcessor(registry);
+        return new AnnotationHandlerBeanPostProcessor();
     }
 
     @Bean

modules/core/ingest-core/src/main/java/com/lingniu/ingest/core/dispatcher/AnnotationHandlerBeanPostProcessor.java

@@ -5,9 +5,11 @@ import com.lingniu.ingest.api.annotation.IdempotentKey;
 import com.lingniu.ingest.api.annotation.MessageMapping;
 import com.lingniu.ingest.api.annotation.ProtocolHandler;
 import com.lingniu.ingest.api.annotation.RateLimited;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.BeanFactoryAware;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.config.BeanPostProcessor;
 import org.springframework.core.annotation.AnnotatedElementUtils;
 
@@ -19,16 +21,25 @@ import java.lang.reflect.Method;
  *
  * <p>替代旧代码里遍布的 {@code if (msgId == 0x0100) ... else if (msgId == 0x0102) ...} 风格。
  */
-public class AnnotationHandlerBeanPostProcessor implements BeanPostProcessor {
+public class AnnotationHandlerBeanPostProcessor implements BeanPostProcessor, BeanFactoryAware {
 
     private static final Logger log = LoggerFactory.getLogger(AnnotationHandlerBeanPostProcessor.class);
 
-    private final HandlerRegistry registry;
+    private HandlerRegistry registry;
+    private BeanFactory beanFactory;
+
+    public AnnotationHandlerBeanPostProcessor() {
+    }
 
     public AnnotationHandlerBeanPostProcessor(HandlerRegistry registry) {
         this.registry = registry;
     }
 
+    @Override
+    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
+        this.beanFactory = beanFactory;
+    }
+
     @Override
     public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
         Class<?> type = bean.getClass();
@@ -53,7 +64,7 @@ public class AnnotationHandlerBeanPostProcessor implements BeanPostProcessor {
                     HandlerDefinition def = new HandlerDefinition(
                             classAnno.protocol(), cmd, info, mapping.desc(),
                             bean, method, paramType, rl, ik, ab);
-                    registry.register(def);
+                    registry().register(def);
                     log.info("registered handler {} protocol={} command=0x{} info=0x{}",
                             type.getSimpleName() + "#" + method.getName(),
                             classAnno.protocol(), Integer.toHexString(cmd), Integer.toHexString(info));
@@ -62,4 +73,14 @@ public class AnnotationHandlerBeanPostProcessor implements BeanPostProcessor {
         }
         return bean;
     }
+
+    private HandlerRegistry registry() {
+        if (registry == null) {
+            if (beanFactory == null) {
+                throw new IllegalStateException("BeanFactory must be set before registering protocol handlers");
+            }
+            registry = beanFactory.getBean(HandlerRegistry.class);
+        }
+        return registry;
+    }
 }

modules/core/ingest-core/src/test/java/com/lingniu/ingest/core/config/IngestCoreAutoConfigurationTest.java

@@ -0,0 +1,20 @@
+package com.lingniu.ingest.core.config;
+
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class IngestCoreAutoConfigurationTest {
+
+    @Test
+    void beanPostProcessorFactoryMethodIsStaticToAvoidEarlyConfigurationInstantiation() throws Exception {
+        Method method = IngestCoreAutoConfiguration.class.getDeclaredMethod(
+                "annotationHandlerBeanPostProcessor");
+
+        assertThat(Modifier.isStatic(method.getModifiers())).isTrue();
+        assertThat(method.getParameterCount()).isZero();
+    }
+}