DNF90 服务端与启动器完整源码（含 GM 工具功能增强）
服务端（Go）： - GM 塞背包/带属性装备发放：在线角色推送 op14 增量物品行，背包实时刷新，无需回角色选择界面 - GM 改金币/改等级：去掉在线拒绝，落库后推送 op14 钱包/op37 等级状态，在线实时刷新 - 等级端点统一切换到新版 GMSetCharacterLevel（自带在线刷新） - 无限/锁死疲劳模式 + 燃烧疲劳：每房间消耗 2 点、打怪与通关经验双倍 - 燃烧疲劳开关时给所有在线角色推送系统提示（op12 mode 0） - 深渊史诗掉率：GM 全局倍率 + 城镇增益药剂窗口倍率，真实接入掉落结算 启动器（Python/JS）： - 标题栏自绘、窗口 1204x717、禁止拖拽改大小、仅最小化/关闭 - GM 工具：疲劳与燃烧、深渊史诗掉率、拍卖行上架（单一定价对齐） - 拍卖行上架前端对齐服务端单一价格语义，修复 400 报错
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package logic
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import (
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"context"
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"errors"
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"fmt"
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"strings"
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"time"
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"longheng.io/server/internal/platform/dispatch"
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"longheng.io/server/internal/platform/idempotency"
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"longheng.io/server/internal/platform/playerloop"
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"longheng.io/server/pkg/contracts"
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"longheng.io/server/pkg/protocol"
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)
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const idemFinalizeTimeout = 5 * time.Second
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func (s *Service) handlePlayerEvent(ctx context.Context, event playerloop.Event) error {
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switch payload := event.Payload.(type) {
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case contracts.SessionConnected:
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return s.handleSessConnected(ctx, payload)
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case contracts.SessionDisconnected:
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return s.handleSessionDisc(ctx, payload)
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case contracts.GatewayClientPacket:
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return s.handleGwPacket(ctx, payload)
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default:
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return nil
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}
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}
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func (s *Service) handleGwPacket(ctx context.Context, packet contracts.GatewayClientPacket) error {
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packet.AccountID = strings.TrimSpace(packet.AccountID)
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packet.SessionID = strings.TrimSpace(packet.SessionID)
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if s.isStaleSession(packet.AccountID, packet.SessionID) {
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return nil
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}
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meta, metaOK := s.dispatcher.Meta(packet.MsgID)
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if metaOK {
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// route policy 先于幂等和 handler 执行，非法路由不应占用防重 key。
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if err := dispatch.EnforceRoutePolicy(meta, dispatch.Request{
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GatewayNodeID: packet.GatewayNodeID,
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SessionID: packet.SessionID,
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AccountID: packet.AccountID,
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PacketID: packet.PacketID,
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MsgID: packet.MsgID,
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Compressed: packet.Compressed,
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Body: append([]byte(nil), packet.Body...),
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Metadata: protocol.CloneFrameMetadata(packet.Metadata),
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ReceivedAt: packet.ReceivedAt,
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}); err != nil {
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "route_policy"})
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return s.publishProtocolError(ctx, packet, err)
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}
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}
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var reservation idempotency.Reservation
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var decision idempotency.Decision
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protected := metaOK && s.shouldProtectPacket(meta)
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if protected {
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var err error
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// Begin 只占位，不执行业务；handler 成功后必须 Commit，失败必须 Abort。
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reservation, decision, err = s.reservePktIdem(ctx, packet)
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if err != nil {
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if errors.Is(err, idempotency.ErrRequestConflict) {
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s.incMetric("logic_idempotency_checks_total", map[string]string{"status": "conflict", "msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency_conflict"})
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return s.publishProtocolError(ctx, packet, protocol.WrapError(protocol.CodeConflict, "idempotency request conflicts with original payload", err))
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}
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if errors.Is(err, idempotency.ErrInvalidRequest) {
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s.incMetric("logic_idempotency_checks_total", map[string]string{"status": "invalid_request", "msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency_invalid"})
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return s.publishProtocolError(ctx, packet, protocol.WrapError(protocol.CodeBadRequest, "invalid idempotency request", err))
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}
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s.incMetric("logic_idempotency_checks_total", map[string]string{"status": "backend_error", "msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency"})
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return s.publishProtocolError(ctx, packet, protocol.WrapError(protocol.CodeUnavailable, "idempotency backend unavailable", err))
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}
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s.incMetric("logic_idempotency_checks_total", map[string]string{"status": string(decision.Status), "msg_id": fmt.Sprint(packet.MsgID)})
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if decision.Status == idempotency.StatusDuplicate || decision.Status == idempotency.StatusReplay {
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// 重复请求优先重放缓存响应，不再进入 handler，避免加钱、领奖、读邮件等动作重复执行。
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cached, ok, err := s.cachedIdemResp(ctx, packet, decision)
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if err != nil {
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s.incMetric("logic_idempotency_response_cache_errors_total", map[string]string{"operation": "get", "msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency_response_cache"})
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return s.publishProtocolError(ctx, packet, protocol.WrapError(protocol.CodeUnavailable, "load idempotent response", err))
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}
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if ok {
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s.incMetric("logic_idempotency_replays_total", map[string]string{"status": string(decision.Status), "msg_id": fmt.Sprint(packet.MsgID)})
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return s.publishPlayerResp(ctx, cached)
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}
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s.incMetric("logic_idempotency_response_cache_misses_total", map[string]string{"status": string(decision.Status), "msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency_response_cache_miss"})
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return s.publishProtocolError(ctx, packet, protocol.Errorf(protocol.CodeConflict, "idempotent response is no longer available"))
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}
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if decision.Status == idempotency.StatusInFlight {
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// 同一个幂等请求仍在处理时返回冲突，客户端应稍后重试而不是并发打 handler。
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s.incMetric("logic_idempotency_inflight_responses_total", map[string]string{"msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency_in_flight"})
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return s.publishProtocolError(ctx, packet, protocol.Errorf(protocol.CodeConflict, "idempotent request is still in flight"))
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}
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}
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s.incMetricLow(MetricLogicPacketsTotal, map[string]string{"msg_id": fmt.Sprint(packet.MsgID)})
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dispatchStarted := time.Now()
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resp, err := s.dispatcher.Dispatch(ctx, dispatch.Request{
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GatewayNodeID: packet.GatewayNodeID,
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SessionID: packet.SessionID,
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AccountID: packet.AccountID,
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PacketID: packet.PacketID,
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MsgID: packet.MsgID,
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Compressed: packet.Compressed,
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Body: append([]byte(nil), packet.Body...),
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Metadata: protocol.CloneFrameMetadata(packet.Metadata),
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ReceivedAt: packet.ReceivedAt,
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})
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s.observeLoopHandler(meta, packet.MsgID, time.Since(dispatchStarted), err)
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if err != nil {
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// handler 失败必须释放 pending 占位，否则客户端重试会被误判为仍在处理。
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_ = abortIdemReservation(ctx, reservation)
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return s.publishProtocolError(ctx, packet, err)
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}
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response := responseFromDispatch(packet, resp)
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if protected {
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// handler 成功后先提交幂等结果，不让后置激活或热缓存耗尽一致性提交的超时预算。
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commitCtx, commitCancel := idemFinalizeContext(ctx)
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payload, err := encodeIdemResp(response)
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if err == nil {
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err = reservation.CommitResult(commitCtx, payload)
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}
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commitCancel()
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// marker 与响应先在幂等权威后端原子提交；独立 response cache 只做可失败的热缓存。
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if err != nil {
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s.incMetric("logic_idempotency_checks_total", map[string]string{"status": "commit_error", "msg_id": fmt.Sprint(packet.MsgID)})
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "idempotency_commit"})
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publishCtx, publishCancel := idemFinalizeContext(ctx)
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defer publishCancel()
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return s.publishProtocolError(publishCtx, packet, idemProtocolErr("commit idempotency request", err))
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}
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}
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if metaOK && meta.PlayerScoped && s.accounts != nil {
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activateCtx, activateCancel := idemFinalizeContext(ctx)
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record, err := s.accounts.Activate(activateCtx, packet.AccountID, packet.SessionID)
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activateCancel()
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if err != nil {
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// handler 和幂等结果均已成功，Activate 只是后置生命周期记录，不能影响原业务重放。
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s.incMetric("logic_packet_errors_total", map[string]string{"stage": "activate_profile"})
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if s.logger != nil {
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s.logger.Error("logic player profile activation failed after handler success", "account_id", packet.AccountID, "session_id", packet.SessionID, "msg_id", packet.MsgID, "error", err)
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}
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} else if s.world != nil {
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s.world.ObservePlayer(record.AccountID, record.State)
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}
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}
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if protected {
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cacheCtx, cacheCancel := idemFinalizeContext(ctx)
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err := s.storeIdemResp(cacheCtx, decision, response)
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cacheCancel()
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if err != nil {
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s.incMetric("logic_idempotency_response_cache_errors_total", map[string]string{"operation": "store", "msg_id": fmt.Sprint(packet.MsgID)})
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if s.logger != nil {
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s.logger.Error("logic idempotent response hot cache store failed", "account_id", packet.AccountID, "msg_id", packet.MsgID, "error", err)
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}
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}
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}
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s.incMetricLow(MetricLogicResponsesTotal, map[string]string{"msg_id": fmt.Sprint(response.MsgID)})
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publishCtx := ctx
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var publishCancel context.CancelFunc
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if protected {
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publishCtx, publishCancel = idemFinalizeContext(ctx)
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defer publishCancel()
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}
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return s.publishPlayerResp(publishCtx, response)
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}
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func idemProtocolErr(operation string, err error) error {
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switch {
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case errors.Is(err, idempotency.ErrInvalidRequest):
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return protocol.WrapError(protocol.CodeBadRequest, operation, err)
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case errors.Is(err, idempotency.ErrRequestConflict):
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return protocol.WrapError(protocol.CodeConflict, operation, err)
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default:
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return protocol.WrapError(protocol.CodeUnavailable, operation, err)
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}
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}
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func abortIdemReservation(ctx context.Context, reservation idempotency.Reservation) error {
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if ctx == nil {
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ctx = context.Background()
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}
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abortCtx, cancel := idemFinalizeContext(ctx)
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defer cancel()
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return reservation.Abort(abortCtx)
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}
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func idemFinalizeContext(ctx context.Context) (context.Context, context.CancelFunc) {
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if ctx == nil {
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ctx = context.Background()
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}
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return context.WithTimeout(context.WithoutCancel(ctx), idemFinalizeTimeout)
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}
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func responseFromDispatch(packet contracts.GatewayClientPacket, resp dispatch.Response) contracts.LogicPlayerResponse {
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metadata := protocol.CloneFrameMetadata(resp.Metadata)
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if len(metadata) == 0 {
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metadata = protocol.CloneFrameMetadata(packet.Metadata)
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}
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return contracts.LogicPlayerResponse{
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TargetGatewayNodeID: packet.GatewayNodeID,
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SessionID: packet.SessionID,
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AccountID: packet.AccountID,
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PacketID: resp.PacketID,
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MsgID: resp.MsgID,
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Sequence: packet.Sequence,
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WireFormat: packet.WireFormat,
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Compressed: resp.Compressed,
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Body: append([]byte(nil), resp.Body...),
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Metadata: metadata,
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Note: resp.Note,
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CreatedAt: time.Now().UTC(),
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}
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}
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func (s *Service) publishPlayerResp(ctx context.Context, response contracts.LogicPlayerResponse) error {
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topic := contracts.GatewayNodeRespTopic(response.TargetGatewayNodeID)
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if topic == "" {
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topic = contracts.TopicLogicPlayerResponse
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}
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if s.responsesOut != nil {
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return s.responsesOut.Publish(ctx, topic, response)
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}
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if s.bus == nil {
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return errRespMissing
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}
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return s.bus.Publish(ctx, topic, response)
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}
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func playerLoopErr(err error) error {
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switch {
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case errors.Is(err, playerloop.ErrMissingAccount):
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return protocol.WrapError(protocol.CodeBadRequest, "account_id is required", err)
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case errors.Is(err, playerloop.ErrStopped):
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return protocol.WrapError(protocol.CodeUnavailable, "player loop unavailable", err)
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case errors.Is(err, playerloop.ErrQueueFull):
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return protocol.WrapError(protocol.CodeUnavailable, "player loop queue full", err)
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default:
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return protocol.WrapError(protocol.CodeInternal, "submit player packet", err)
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}
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}
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func (s *Service) publishProtocolError(ctx context.Context, packet contracts.GatewayClientPacket, err error) error {
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appErr := protocol.ErrorFrom(err)
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s.incMetric("logic_protocol_errors_total", map[string]string{"code": appErr.Code.String(), "msg_id": fmt.Sprint(packet.MsgID)})
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if s.logger != nil {
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s.logger.Error("logic dispatch failed", "account_id", packet.AccountID, "msg_id", packet.MsgID, "code", appErr.Code.String(), "error", err)
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}
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now := time.Now()
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errorResp := protocol.PublicErrorResponse(appErr, now.Unix())
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return s.publishPlayerResp(ctx, contracts.LogicPlayerResponse{
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TargetGatewayNodeID: packet.GatewayNodeID,
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SessionID: packet.SessionID,
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AccountID: packet.AccountID,
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PacketID: protocol.PacketIDReqResp,
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MsgID: packet.MsgID,
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Sequence: packet.Sequence,
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WireFormat: packet.WireFormat,
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Body: protocol.EncodeErrorResponse(errorResp),
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Metadata: protocol.CloneFrameMetadata(packet.Metadata),
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Note: fmt.Sprintf("ProtocolError:%s", appErr.Code.String()),
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CreatedAt: now.UTC(),
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})
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}
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