From 7a6292c5e99ce5bed133687c9f21235836025783 Mon Sep 17 00:00:00 2001
From: Junjie <fallin.jie@qq.com>
Date: 星期五, 20 三月 2026 19:12:56 +0800
Subject: [PATCH] #

---
 src/main/java/com/zy/common/utils/NavigateUtils.java |  209 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 209 insertions(+), 0 deletions(-)

diff --git a/src/main/java/com/zy/common/utils/NavigateUtils.java b/src/main/java/com/zy/common/utils/NavigateUtils.java
index 0a0e7e4..b3b87dc 100644
--- a/src/main/java/com/zy/common/utils/NavigateUtils.java
+++ b/src/main/java/com/zy/common/utils/NavigateUtils.java
@@ -4,6 +4,7 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -328,11 +329,17 @@
         Map<Integer, StationProtocol> statusMap = loadStationStatusMap();
         Map<Integer, Double> stationLoopLoadMap = loadStationLoopLoadMap();
         StationTrafficSnapshot trafficSnapshot = loadStationTrafficSnapshot(statusMap, currentTaskNo);
+        LoopMergeGuardContext loopMergeGuardContext = loadLoopMergeGuardContext();
         Set<Integer> outStationIdSet = loadAllOutStationIdSet();
         List<PathCandidateMetrics> metricsList = new ArrayList<>();
         int skippedByOtherOutStation = 0;
+        int skippedByLoopMergeGuard = 0;
         for (List<NavigateNode> path : filteredCandidates) {
             if (path == null || path.isEmpty()) {
+                continue;
+            }
+            if (!isLoopMergePathAllowed(path, statusMap, trafficSnapshot, loopMergeGuardContext)) {
+                skippedByLoopMergeGuard++;
                 continue;
             }
             PathCandidateMetrics metrics = buildCandidateMetrics(path, statusMap, stationLoopLoadMap, trafficSnapshot, profileConfig, ruleConfig, globalPolicy, outStationIdSet);
@@ -345,6 +352,10 @@
         if (metricsList.isEmpty()) {
             if (globalPolicy.forceSkipPassOtherOutStation && skippedByOtherOutStation > 0) {
                 News.warn("[WCS Debug] 绔欑偣璺緞鍊欓�夊叏閮ㄨ杩囨护锛屽洜缁忚繃鍏朵粬鍑哄簱绔欑偣,startStationId={},endStationId={}",
+                        resolvedPolicy.getRuleEntity() == null ? null : resolvedPolicy.getRuleEntity().getStartStationId(),
+                        resolvedPolicy.getRuleEntity() == null ? null : resolvedPolicy.getRuleEntity().getEndStationId());
+            } else if (skippedByLoopMergeGuard > 0) {
+                News.warn("[WCS Debug] 绔欑偣璺緞鍊欓�夊叏閮ㄨ杩囨护锛屽洜鍒嗗弶鍙f彃鍏ョ幆绾夸富骞蹭細褰卞搷涓诲共閬�,startStationId={},endStationId={}",
                         resolvedPolicy.getRuleEntity() == null ? null : resolvedPolicy.getRuleEntity().getStartStationId(),
                         resolvedPolicy.getRuleEntity() == null ? null : resolvedPolicy.getRuleEntity().getEndStationId());
             }
@@ -936,6 +947,113 @@
         return stationLoopLoadMap;
     }
 
+    private LoopMergeGuardContext loadLoopMergeGuardContext() {
+        LoopMergeGuardContext context = new LoopMergeGuardContext();
+        try {
+            if (stationCycleCapacityService == null) {
+                return context;
+            }
+            StationCycleCapacityVo capacityVo = stationCycleCapacityService.getLatestSnapshot();
+            if (capacityVo == null || capacityVo.getLoopList() == null || capacityVo.getLoopList().isEmpty()) {
+                return context;
+            }
+
+            Map<Integer, Set<Integer>> stationGraph = loadUndirectedStationGraph();
+            if (stationGraph.isEmpty()) {
+                return context;
+            }
+
+            for (StationCycleLoopVo loopVo : capacityVo.getLoopList()) {
+                List<Integer> rawStationIdList = loopVo == null ? Collections.emptyList() : loopVo.getStationIdList();
+                List<Integer> loopStationIdList = distinctPositiveStationIds(rawStationIdList);
+                if (loopStationIdList.size() < 3) {
+                    continue;
+                }
+                Set<Integer> loopStationSet = new HashSet<>(loopStationIdList);
+                for (Integer stationId : loopStationSet) {
+                    context.loopStationIdSet.add(stationId);
+                    Set<Integer> graphNeighborSet = stationGraph.getOrDefault(stationId, Collections.emptySet());
+                    Set<Integer> loopNeighborSet = new LinkedHashSet<>();
+                    for (Integer neighborStationId : graphNeighborSet) {
+                        if (neighborStationId != null && loopStationSet.contains(neighborStationId)) {
+                            loopNeighborSet.add(neighborStationId);
+                        }
+                    }
+                    if (!loopNeighborSet.isEmpty()) {
+                        context.loopNeighborMap.computeIfAbsent(stationId, key -> new LinkedHashSet<>()).addAll(loopNeighborSet);
+                    }
+                }
+            }
+        } catch (Exception ignore) {
+        }
+        return context;
+    }
+
+    private Map<Integer, Set<Integer>> loadUndirectedStationGraph() {
+        Map<Integer, Set<Integer>> graph = new HashMap<>();
+        List<Integer> levList = loadStationLevList();
+        if (levList.isEmpty()) {
+            return graph;
+        }
+
+        NavigateSolution navigateSolution = new NavigateSolution();
+        for (Integer lev : levList) {
+            if (lev == null) {
+                continue;
+            }
+            List<List<NavigateNode>> stationMap;
+            try {
+                stationMap = navigateSolution.getStationMap(lev);
+            } catch (Exception ignore) {
+                continue;
+            }
+            if (stationMap == null || stationMap.isEmpty()) {
+                continue;
+            }
+
+            for (List<NavigateNode> row : stationMap) {
+                for (NavigateNode node : safeList(row)) {
+                    Integer stationId = extractStationId(node);
+                    if (stationId == null) {
+                        continue;
+                    }
+                    graph.computeIfAbsent(stationId, key -> new LinkedHashSet<>());
+                    List<NavigateNode> nextNodeList = navigateSolution.extend_current_node(stationMap, node);
+                    for (NavigateNode nextNode : safeList(nextNodeList)) {
+                        Integer nextStationId = extractStationId(nextNode);
+                        if (nextStationId == null || stationId.equals(nextStationId)) {
+                            continue;
+                        }
+                        graph.computeIfAbsent(nextStationId, key -> new LinkedHashSet<>());
+                        graph.get(stationId).add(nextStationId);
+                        graph.get(nextStationId).add(stationId);
+                    }
+                }
+            }
+        }
+        return graph;
+    }
+
+    private List<Integer> loadStationLevList() {
+        List<Integer> levList = new ArrayList<>();
+        if (basStationService == null) {
+            return levList;
+        }
+        try {
+            List<BasStation> stationList = basStationService.list(new QueryWrapper<BasStation>().select("station_lev"));
+            Set<Integer> seen = new HashSet<>();
+            for (BasStation station : safeList(stationList)) {
+                Integer lev = station == null ? null : station.getStationLev();
+                if (lev != null && seen.add(lev)) {
+                    levList.add(lev);
+                }
+            }
+            Collections.sort(levList);
+        } catch (Exception ignore) {
+        }
+        return levList;
+    }
+
     private StationTrafficSnapshot loadStationTrafficSnapshot(Map<Integer, StationProtocol> statusMap, Integer currentTaskNo) {
         StationTrafficSnapshot snapshot = new StationTrafficSnapshot();
         Map<Integer, Integer> busyMap = new HashMap<>();
@@ -1025,6 +1143,92 @@
             }
         }
         return snapshot;
+    }
+
+    private boolean isLoopMergePathAllowed(List<NavigateNode> path,
+                                           Map<Integer, StationProtocol> statusMap,
+                                           StationTrafficSnapshot trafficSnapshot,
+                                           LoopMergeGuardContext loopMergeGuardContext) {
+        if (path == null || path.size() < 2 || loopMergeGuardContext == null || loopMergeGuardContext.loopStationIdSet.isEmpty()) {
+            return true;
+        }
+
+        List<Integer> stationIdList = extractStationIdList(path);
+        if (stationIdList.size() < 2) {
+            return true;
+        }
+
+        for (int i = 1; i < stationIdList.size(); i++) {
+            Integer prevStationId = stationIdList.get(i - 1);
+            Integer currentStationId = stationIdList.get(i);
+            if (prevStationId == null || currentStationId == null) {
+                continue;
+            }
+            if (loopMergeGuardContext.loopStationIdSet.contains(prevStationId)
+                    || !loopMergeGuardContext.loopStationIdSet.contains(currentStationId)) {
+                continue;
+            }
+
+            Set<Integer> trunkNeighborSet = loopMergeGuardContext.loopNeighborMap.getOrDefault(currentStationId, Collections.emptySet());
+            if (trunkNeighborSet.size() < 2) {
+                continue;
+            }
+
+            for (Integer trunkNeighborStationId : trunkNeighborSet) {
+                if (isStationOccupiedForLoopMerge(trunkNeighborStationId, statusMap, trafficSnapshot)) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    private boolean isStationOccupiedForLoopMerge(Integer stationId,
+                                                  Map<Integer, StationProtocol> statusMap,
+                                                  StationTrafficSnapshot trafficSnapshot) {
+        if (stationId == null) {
+            return false;
+        }
+
+        StationProtocol protocol = statusMap == null ? null : statusMap.get(stationId);
+        if (protocol != null) {
+            if ((protocol.getTaskNo() != null && protocol.getTaskNo() > 0) || protocol.isRunBlock()) {
+                return true;
+            }
+        }
+
+        if (trafficSnapshot == null) {
+            return false;
+        }
+        if (trafficSnapshot.queueDepthMap.getOrDefault(stationId, 0) > 0) {
+            return true;
+        }
+
+        for (TraceRouteSnapshot routeSnapshot : trafficSnapshot.traceRouteList) {
+            if (routeSnapshot == null) {
+                continue;
+            }
+            if (stationId.equals(routeSnapshot.currentStationId)) {
+                return true;
+            }
+            if (containsStation(routeSnapshot.issuedStationIds, stationId)
+                    || containsStation(routeSnapshot.pendingStationIds, stationId)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean containsStation(List<Integer> stationIdList, Integer stationId) {
+        if (stationId == null || stationIdList == null || stationIdList.isEmpty()) {
+            return false;
+        }
+        for (Integer currentStationId : stationIdList) {
+            if (stationId.equals(currentStationId)) {
+                return true;
+            }
+        }
+        return false;
     }
 
     private List<StationTaskTraceVo> loadActiveTraceList(Integer currentTaskNo, Map<Integer, StationProtocol> statusMap) {
@@ -1506,6 +1710,11 @@
         private Date sendTime;
     }
 
+    private static class LoopMergeGuardContext {
+        private final Set<Integer> loopStationIdSet = new HashSet<>();
+        private final Map<Integer, Set<Integer>> loopNeighborMap = new HashMap<>();
+    }
+
     private static class PathGlobalPolicy {
         private double lenWeightFactor = 1.0d;
         private double congWeightFactor = 1.0d;

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