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 metrics
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import (
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"sort"
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"strings"
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"sync"
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)
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type Type string
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const (
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TypeCounter Type = "counter"
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TypeGauge Type = "gauge"
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TypeHistogram Type = "histogram"
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)
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// Sample 是 registry / observer 输出的最小单元。Value 用 int64 适合 counter / gauge
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// 以及 histogram 的 bucket / count；当样本表示浮点值（如 histogram 的 sum）时，
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// 设置 Float=true 并把数值写到 FloatValue。这种双字段写法兼容已有所有 counter/gauge
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// 调用方，新增字段对存量 Sample 字面量保持零值，不影响 reflect.DeepEqual 比较。
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type Sample struct {
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Name string `json:"name"`
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Type Type `json:"type"`
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Labels map[string]string `json:"labels,omitempty"`
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Value int64 `json:"value"`
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Float bool `json:"float,omitempty"`
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FloatValue float64 `json:"float_value,omitempty"`
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}
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type Observer func(*Registry)
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type observerEntry struct {
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name string
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fn Observer
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}
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type Registry struct {
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mu sync.RWMutex
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samples map[string]Sample
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observers []observerEntry
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}
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func New() *Registry {
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return &Registry{samples: make(map[string]Sample)}
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}
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// RegisterObserver 注册 scrape 时执行的回调。
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// Snapshot 向 Prometheus 客户端返回样本前会调用 observer；observer 应保持低成本
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// （例如 O(1) Redis SCARD 或本地 atomics），并且必须能承受并发调用。
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// 使用同名重新注册会替换旧回调；fn 为 nil 表示注销。
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func (r *Registry) RegisterObserver(name string, fn Observer) {
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if r == nil || strings.TrimSpace(name) == "" {
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return
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}
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r.mu.Lock()
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defer r.mu.Unlock()
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for idx := range r.observers {
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if r.observers[idx].name == name {
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if fn == nil {
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r.observers = append(r.observers[:idx], r.observers[idx+1:]...)
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return
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}
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r.observers[idx].fn = fn
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return
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}
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}
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if fn == nil {
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return
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}
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r.observers = append(r.observers, observerEntry{name: name, fn: fn})
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}
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// RunObservers 调用所有已注册 observer。
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// Prometheus handler 和 /debug/metrics 会在序列化前调用它，让观测样本反映当前状态。
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// observer 会顺序执行，不能长时间阻塞。
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func (r *Registry) RunObservers() {
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if r == nil {
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return
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}
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r.mu.RLock()
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entries := make([]observerEntry, len(r.observers))
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copy(entries, r.observers)
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r.mu.RUnlock()
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for _, entry := range entries {
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if entry.fn == nil {
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continue
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}
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entry.fn(r)
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}
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}
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func (r *Registry) Inc(name string, labels map[string]string) {
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r.Add(name, labels, 1)
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}
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func (r *Registry) Add(name string, labels map[string]string, delta int64) {
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if r == nil || name == "" {
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return
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}
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r.mu.Lock()
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defer r.mu.Unlock()
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r.ensureSamplesLocked()
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key := sampleKey(TypeCounter, name, labels)
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sample := r.samples[key]
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if sample.Name == "" {
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sample = Sample{Name: name, Type: TypeCounter, Labels: cloneLabels(labels)}
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}
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sample.Value += delta
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r.samples[key] = sample
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}
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func (r *Registry) SetCounter(name string, labels map[string]string, value int64) {
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if r == nil || name == "" {
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return
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}
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r.mu.Lock()
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defer r.mu.Unlock()
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r.ensureSamplesLocked()
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key := sampleKey(TypeCounter, name, labels)
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r.samples[key] = Sample{Name: name, Type: TypeCounter, Labels: cloneLabels(labels), Value: value}
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}
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func (r *Registry) SetGauge(name string, labels map[string]string, value int64) {
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if r == nil || name == "" {
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return
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}
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r.mu.Lock()
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defer r.mu.Unlock()
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r.ensureSamplesLocked()
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key := sampleKey(TypeGauge, name, labels)
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r.samples[key] = Sample{Name: name, Type: TypeGauge, Labels: cloneLabels(labels), Value: value}
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}
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// SetHistogramSample 写入或替换 histogram family 中的一项样本。
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// Histogram family 会拆成多条共享 base 名的样本：
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// - <base>_bucket{le="..."} 累计计数，int
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// - <base>_count 总观察次数，int
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// - <base>_sum 观察值总和（float 秒，set float=true）
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//
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// observer 会在 RunObservers 中调用它发布 histogram 的当前绝对状态；
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// 和 SetGauge 一样，这里是替换语义，不做累加。Histogram.Observe 是公开 API，
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// 调用方通常不直接使用 SetHistogramSample。
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func (r *Registry) SetHistogramSample(name string, labels map[string]string, value int64, float bool, floatValue float64) {
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if r == nil || name == "" {
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return
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}
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r.mu.Lock()
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defer r.mu.Unlock()
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r.ensureSamplesLocked()
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key := sampleKey(TypeHistogram, name, labels)
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r.samples[key] = Sample{
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Name: name,
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Type: TypeHistogram,
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Labels: cloneLabels(labels),
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Value: value,
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Float: float,
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FloatValue: floatValue,
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}
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}
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func (r *Registry) AddGauge(name string, labels map[string]string, delta int64) {
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if r == nil || name == "" {
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return
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}
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r.mu.Lock()
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defer r.mu.Unlock()
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r.ensureSamplesLocked()
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key := sampleKey(TypeGauge, name, labels)
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sample := r.samples[key]
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if sample.Name == "" {
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sample = Sample{Name: name, Type: TypeGauge, Labels: cloneLabels(labels)}
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}
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sample.Value += delta
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r.samples[key] = sample
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}
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func (r *Registry) Snapshot() []Sample {
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if r == nil {
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return nil
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}
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r.mu.RLock()
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out := make([]Sample, 0, len(r.samples))
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for _, sample := range r.samples {
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sample.Labels = cloneLabels(sample.Labels)
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out = append(out, sample)
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}
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r.mu.RUnlock()
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sort.Slice(out, func(i, j int) bool {
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if out[i].Name != out[j].Name {
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return out[i].Name < out[j].Name
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}
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if out[i].Type != out[j].Type {
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return out[i].Type < out[j].Type
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}
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return labelsKey(out[i].Labels) < labelsKey(out[j].Labels)
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})
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return out
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}
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func (r *Registry) ensureSamplesLocked() {
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if r.samples == nil {
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r.samples = make(map[string]Sample)
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}
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}
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func sampleKey(sampleType Type, name string, labels map[string]string) string {
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return string(sampleType) + "\x00" + name + "\x00" + labelsKey(labels)
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}
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func labelsKey(labels map[string]string) string {
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if len(labels) == 0 {
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return ""
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}
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keys := make([]string, 0, len(labels))
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for key := range labels {
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keys = append(keys, key)
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}
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sort.Strings(keys)
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var b strings.Builder
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for _, key := range keys {
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b.WriteString(key)
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b.WriteByte('=')
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b.WriteString(labels[key])
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b.WriteByte('\x00')
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}
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return b.String()
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}
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func cloneLabels(labels map[string]string) map[string]string {
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if len(labels) == 0 {
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return nil
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}
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out := make(map[string]string, len(labels))
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for key, value := range labels {
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out[key] = value
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}
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return out
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}
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