fix: serialize phase4 inventory and outbound gates

lastleg-service/src/main/java/com/baiyue/lastleg/inboundplan/pda/service/ReceivingContainerService.java

@@ -38,6 +38,7 @@ import org.springframework.dao.DuplicateKeyException;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.transaction.annotation.Isolation;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.server.ResponseStatusException;
 
@@ -325,7 +326,7 @@ public class ReceivingContainerService {
         }
     }
 
-    @Transactional
+    @Transactional(isolation = Isolation.READ_COMMITTED)
     public ReceivingContainerResponses.Session complete(String operatorKey,
                                                          ReceivingContainerRequests.Action request) {
         ReceivingContainerOperation replay = replay(operatorKey, "COMPLETE", request.idempotencyKey(), request);

lastleg-service/src/main/java/com/baiyue/lastleg/service/LoadingCompletedConsumer.java

@@ -17,6 +17,7 @@ import jakarta.annotation.Resource;
 import org.springframework.dao.DuplicateKeyException;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.transaction.annotation.Isolation;
 import com.baomidou.mybatisplus.core.toolkit.IdWorker;
 import java.math.BigDecimal;
 import java.time.LocalDateTime;
@@ -41,7 +42,7 @@ public class LoadingCompletedConsumer {
     @Resource private DropshipOrderService dropshipOrders;
     @Resource private InventoryCommandService inventory;
 
-    @Transactional
+    @Transactional(isolation = Isolation.READ_COMMITTED)
     public int consume(EventEnvelope envelope) {
         envelope.requireValid();
         if (!EventTypes.FIRST_LEG_LOADING_PLAN_COMPLETED.equals(envelope.eventType())

lastleg-service/src/test/java/com/baiyue/lastleg/inboundplan/pda/ReceivingContainerContractTest.java

@@ -2,11 +2,16 @@ package com.baiyue.lastleg.inboundplan.pda;
 
 import com.baomidou.mybatisplus.annotation.FieldStrategy;
 import com.baomidou.mybatisplus.annotation.TableField;
+import com.baiyue.common.event.EventEnvelope;
 import com.baiyue.lastleg.inboundplan.pda.controller.ReceivingContainerController;
 import com.baiyue.lastleg.inboundplan.pda.dto.ReceivingContainerRequests;
 import com.baiyue.lastleg.inboundplan.pda.entity.ReceivingContainerSession;
+import com.baiyue.lastleg.inboundplan.pda.service.ReceivingContainerService;
+import com.baiyue.lastleg.service.LoadingCompletedConsumer;
 import org.junit.jupiter.api.Test;
 import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.transaction.annotation.Isolation;
+import org.springframework.transaction.annotation.Transactional;
 import jakarta.validation.constraints.Size;
 
 import java.io.IOException;
@@ -58,6 +63,17 @@ class ReceivingContainerContractTest {
         }
     }
 
+    @Test
+    void inventoryCreatingEntryTransactionsAvoidMissingDimensionGapLockDeadlocks() throws NoSuchMethodException {
+        Transactional pda = ReceivingContainerService.class
+            .getMethod("complete", String.class, ReceivingContainerRequests.Action.class)
+            .getAnnotation(Transactional.class);
+        Transactional bridge = LoadingCompletedConsumer.class.getMethod("consume", EventEnvelope.class)
+            .getAnnotation(Transactional.class);
+        assertTrue(pda != null && pda.isolation() == Isolation.READ_COMMITTED);
+        assertTrue(bridge != null && bridge.isolation() == Isolation.READ_COMMITTED);
+    }
+
     @Test
     void schemaContainsCustomerScopedPlanChildrenAndGlobalPlatformPickerLocks() throws IOException {
         String schema = resource("db/lastleg.sql").toLowerCase();