#

Junjie

昨天 058d7bbb714634e42bff1dd71fdfca3a378421d3

 src/main/java/com/zy/core/thread/impl/station/StationSegmentExecutor.java

@@ -35,6 +35,12 @@
    private final Function<StationCommand, CommandResponse> commandSender;
    private final StationSegmentPlanner segmentPlanner = new StationSegmentPlanner();

    private enum SegmentSendResult {
        DISPATCHED,
        CANCELLED,
        RETRY
    }

    public StationSegmentExecutor(DeviceConfig deviceConfig,
                                  RedisUtil redisUtil,
                                  Function<StationCommand, CommandResponse> commandSender) {
@@ -83,10 +89,11 @@
        long lastSeenAt = System.currentTimeMillis();
        int segCursor = 0;
        Integer lastCurrentStationId = null;
        int lastMatchedPathIndex = -1;
        boolean firstRun = true;
        while (true) {
            try {
                if (!isRouteActive(original.getTaskNo(), original.getRouteVersion())) {
                if (!isRouteDispatchable(original.getTaskNo(), original.getRouteVersion())) {
                    if (traceRegistry != null) {
                        traceRegistry.markCancelled(original.getTaskNo(), traceVersion, lastCurrentStationId,
                                buildDetails("reason", "route_version_replaced", "routeVersion", original.getRouteVersion()));
@@ -138,12 +145,17 @@
                    break;
                }

                int currentIndex = effectiveFullPath.indexOf(currentStation.getStationId());
                int currentIndex = resolveCurrentPathIndex(
                        effectiveFullPath,
                        currentStation.getStationId(),
                        lastMatchedPathIndex
                );
                if (currentIndex < 0) {
                    Thread.sleep(500L);
                    firstRun = false;
                    continue;
                }
                lastMatchedPathIndex = currentIndex;

                int remaining = effectiveFullPath.size() - currentIndex - 1;
                if (remaining <= 0) {
@@ -186,44 +198,115 @@
        }
    }

    private int resolveCurrentPathIndex(List<Integer> fullPathStationIds,
                                        Integer currentStationId,
                                        int lastMatchedPathIndex) {
        if (fullPathStationIds == null || fullPathStationIds.isEmpty() || currentStationId == null) {
            return -1;
        }
        if (lastMatchedPathIndex >= 0
                && lastMatchedPathIndex < fullPathStationIds.size()
                && equalsInteger(currentStationId, fullPathStationIds.get(lastMatchedPathIndex))) {
            return lastMatchedPathIndex;
        }

        int nextIndex = findNextStationIndex(fullPathStationIds, currentStationId, Math.max(lastMatchedPathIndex + 1, 0));
        if (nextIndex >= 0) {
            return nextIndex;
        }
        return findNextStationIndex(fullPathStationIds, currentStationId, 0);
    }

    private int findNextStationIndex(List<Integer> path, Integer stationId, int fromIndex) {
        if (path == null || path.isEmpty() || stationId == null) {
            return -1;
        }
        int startIdx = Math.max(fromIndex, 0);
        for (int i = startIdx; i < path.size(); i++) {
            if (equalsInteger(stationId, path.get(i))) {
                return i;
            }
        }
        return -1;
    }

    private boolean sendSegmentWithRetry(StationCommand command,
                                         StationTaskTraceRegistry traceRegistry,
                                         Integer traceVersion,
                                         Integer currentStationId) {
        // 在下发新分段前检查路由版本是否仍然有效，避免在路由版本已更新的情况下下发旧版本命令
        if (!isRouteDispatchable(command == null ? null : command.getTaskNo(), command == null ? null : command.getRouteVersion())) {
            if (traceRegistry != null && command != null) {
                traceRegistry.markCancelled(command.getTaskNo(), traceVersion, currentStationId,
                        buildDetails("reason", "route_version_replaced_before_segment_send", "routeVersion", command.getRouteVersion()));
            }
            markCancelled(command == null ? null : command.getTaskNo(),
                    command == null ? null : command.getRouteVersion(),
                    currentStationId,
                    "route_version_replaced_before_segment_send");
            return false;
        }
        
        while (true) {
            if (!isRouteActive(command == null ? null : command.getTaskNo(), command == null ? null : command.getRouteVersion())) {
                if (traceRegistry != null && command != null) {
                    traceRegistry.markCancelled(command.getTaskNo(), traceVersion, currentStationId,
                            buildDetails("reason", "route_version_replaced", "routeVersion", command.getRouteVersion()));
                }
                markCancelled(command == null ? null : command.getTaskNo(),
                        command == null ? null : command.getRouteVersion(),
                        currentStationId,
                        "route_version_replaced");
            SegmentSendResult sendResult = executeLockedSegmentSend(command, traceRegistry, traceVersion, currentStationId);
            if (sendResult == SegmentSendResult.CANCELLED) {
                return false;
            }
            if (isTaskMoveReset(command == null ? null : command.getTaskNo())) {
                if (traceRegistry != null && command != null) {
                    traceRegistry.markCancelled(command.getTaskNo(), traceVersion, currentStationId,
                            buildDetails("reason", "redis_cancel_signal", "routeVersion", command.getRouteVersion()));
                }
                markCancelled(command == null ? null : command.getTaskNo(),
                        command == null ? null : command.getRouteVersion(),
                        currentStationId,
                        "redis_cancel_signal");
                return false;
            }
            CommandResponse commandResponse = commandSender.apply(command);
            if (commandResponse == null) {
            if (sendResult == SegmentSendResult.RETRY) {
                sleepQuietly(200L);
                continue;
            }
            if (commandResponse.getResult()) {
                markSegmentIssued(command == null ? null : command.getTaskNo(), command == null ? null : command.getRouteVersion());
                return true;
            }
            sleepQuietly(200L);
            return true;
        }
    }

    private SegmentSendResult executeLockedSegmentSend(StationCommand command,
                                                       StationTaskTraceRegistry traceRegistry,
                                                       Integer traceVersion,
                                                       Integer currentStationId) {
        Integer taskNo = command == null ? null : command.getTaskNo();
        StationMoveCoordinator moveCoordinator = loadMoveCoordinator();
        if (moveCoordinator != null) {
            // 分段发送的最终检查和实际下发需要与 reroute 共用任务锁。
            // 这样切路线程一旦进入 CANCEL_PENDING/RESET，旧路线就不能再穿过最后这一步发到设备侧。
            return moveCoordinator.withTaskDispatchLock(taskNo,
                    () -> doSendSegment(command, traceRegistry, traceVersion, currentStationId));
        }
        return doSendSegment(command, traceRegistry, traceVersion, currentStationId);
    }

    private SegmentSendResult doSendSegment(StationCommand command,
                                            StationTaskTraceRegistry traceRegistry,
                                            Integer traceVersion,
                                            Integer currentStationId) {
        if (!isRouteDispatchable(command == null ? null : command.getTaskNo(), command == null ? null : command.getRouteVersion())) {
            if (traceRegistry != null && command != null) {
                traceRegistry.markCancelled(command.getTaskNo(), traceVersion, currentStationId,
                        buildDetails("reason", "route_version_replaced", "routeVersion", command.getRouteVersion()));
            }
            markCancelled(command == null ? null : command.getTaskNo(),
                    command == null ? null : command.getRouteVersion(),
                    currentStationId,
                    "route_version_replaced");
            return SegmentSendResult.CANCELLED;
        }
        if (isTaskMoveReset(command == null ? null : command.getTaskNo())) {
            if (traceRegistry != null && command != null) {
                traceRegistry.markCancelled(command.getTaskNo(), traceVersion, currentStationId,
                        buildDetails("reason", "redis_cancel_signal", "routeVersion", command.getRouteVersion()));
            }
            markCancelled(command == null ? null : command.getTaskNo(),
                    command == null ? null : command.getRouteVersion(),
                    currentStationId,
                    "redis_cancel_signal");
            return SegmentSendResult.CANCELLED;
        }
        CommandResponse commandResponse = commandSender.apply(command);
        if (commandResponse == null || !Boolean.TRUE.equals(commandResponse.getResult())) {
            return SegmentSendResult.RETRY;
        }
        markSegmentIssued(command == null ? null : command.getTaskNo(), command == null ? null : command.getRouteVersion());
        return SegmentSendResult.DISPATCHED;
    }

    private double loadSegmentAdvanceRatio() {
@@ -401,15 +484,19 @@
        }
    }

    private boolean isRouteActive(Integer taskNo, Integer routeVersion) {
    private boolean isRouteDispatchable(Integer taskNo, Integer routeVersion) {
        // Legacy direct-enqueue commands (for example FakeProcess/stationInExecute)
        // do not register a move session and therefore have no routeVersion.
        // They should keep the historical behavior and execute normally.
        if (taskNo == null || routeVersion == null) {
            return true;
        }
        StationMoveCoordinator moveCoordinator = SpringUtils.getBean(StationMoveCoordinator.class);
        return moveCoordinator == null || moveCoordinator.isActiveRoute(taskNo, routeVersion);
        StationMoveCoordinator moveCoordinator = loadMoveCoordinator();
        return moveCoordinator == null || moveCoordinator.canDispatchRoute(taskNo, routeVersion);
    }

    private StationMoveCoordinator loadMoveCoordinator() {
        return SpringUtils.getBean(StationMoveCoordinator.class);
    }

    private void markSegmentIssued(Integer taskNo, Integer routeVersion) {