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fix: concurrent map writes #707
This commit is contained in:
Larvan2
riolu.rs
parent
54fee7bd3a
commit
44d1d2e0c2
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@ -10,6 +10,7 @@ import (
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"net/netip"
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"net/url"
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"strconv"
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"sync"
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"time"
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"github.com/Dreamacro/clash/common/atomic"
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@ -36,7 +37,7 @@ type Proxy struct {
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history *queue.Queue[C.DelayHistory]
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alive *atomic.Bool
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url string
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extra map[string]*extraProxyState
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extra sync.Map
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}
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// Alive implements C.Proxy
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@ -46,10 +47,8 @@ func (p *Proxy) Alive() bool {
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// AliveForTestUrl implements C.Proxy
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func (p *Proxy) AliveForTestUrl(url string) bool {
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if p.extra != nil {
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if state, ok := p.extra[url]; ok {
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return state.alive.Load()
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}
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if state, ok := p.extra.Load(url); ok {
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return state.(*extraProxyState).alive.Load()
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}
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return p.alive.Load()
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@ -88,16 +87,16 @@ func (p *Proxy) DelayHistory() []C.DelayHistory {
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for _, item := range queueM {
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histories = append(histories, item)
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}
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return histories
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}
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// DelayHistoryForTestUrl implements C.Proxy
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func (p *Proxy) DelayHistoryForTestUrl(url string) []C.DelayHistory {
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var queueM []C.DelayHistory
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if p.extra != nil {
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if state, ok := p.extra[url]; ok {
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queueM = state.history.Copy()
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}
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if state, ok := p.extra.Load(url); ok {
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queueM = state.(*extraProxyState).history.Copy()
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}
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if queueM == nil {
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@ -112,19 +111,25 @@ func (p *Proxy) DelayHistoryForTestUrl(url string) []C.DelayHistory {
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}
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func (p *Proxy) ExtraDelayHistory() map[string][]C.DelayHistory {
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extra := map[string][]C.DelayHistory{}
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if p.extra != nil && len(p.extra) != 0 {
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for testUrl, option := range p.extra {
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histories := []C.DelayHistory{}
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queueM := option.history.Copy()
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for _, item := range queueM {
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histories = append(histories, item)
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}
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extraHistory := map[string][]C.DelayHistory{}
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extra[testUrl] = histories
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p.extra.Range(func(k, v interface{}) bool {
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testUrl := k.(string)
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state := v.(*extraProxyState)
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histories := []C.DelayHistory{}
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queueM := state.history.Copy()
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for _, item := range queueM {
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histories = append(histories, item)
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}
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}
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return extra
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extraHistory[testUrl] = histories
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return true
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})
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return extraHistory
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}
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// LastDelay return last history record. if proxy is not alive, return the max value of uint16.
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@ -149,11 +154,9 @@ func (p *Proxy) LastDelayForTestUrl(url string) (delay uint16) {
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alive := p.alive.Load()
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history := p.history.Last()
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if p.extra != nil {
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if state, ok := p.extra[url]; ok {
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alive = state.alive.Load()
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history = state.history.Last()
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}
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if state, ok := p.extra.Load(url); ok {
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alive = state.(*extraProxyState).alive.Load()
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history = state.(*extraProxyState).history.Last()
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}
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if !alive {
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@ -214,23 +217,19 @@ func (p *Proxy) URLTest(ctx context.Context, url string, expectedStatus utils.In
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record.Delay = t
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}
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if p.extra == nil {
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p.extra = map[string]*extraProxyState{}
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}
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state, ok := p.extra[url]
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state, ok := p.extra.Load(url)
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if !ok {
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state = &extraProxyState{
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history: queue.New[C.DelayHistory](defaultHistoriesNum),
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alive: atomic.NewBool(true),
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}
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p.extra[url] = state
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p.extra.Store(url, state)
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}
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state.alive.Store(alive)
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state.history.Put(record)
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if state.history.Len() > defaultHistoriesNum {
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state.history.Pop()
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state.(*extraProxyState).alive.Store(alive)
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state.(*extraProxyState).history.Put(record)
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if state.(*extraProxyState).history.Len() > defaultHistoriesNum {
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state.(*extraProxyState).history.Pop()
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}
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default:
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log.Debugln("health check result will be discarded, url: %s alive: %t, delay: %d", url, alive, t)
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@ -307,7 +306,12 @@ func (p *Proxy) URLTest(ctx context.Context, url string, expectedStatus utils.In
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}
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func NewProxy(adapter C.ProxyAdapter) *Proxy {
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return &Proxy{adapter, queue.New[C.DelayHistory](defaultHistoriesNum), atomic.NewBool(true), "", map[string]*extraProxyState{}}
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return &Proxy{
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ProxyAdapter: adapter,
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history: queue.New[C.DelayHistory](defaultHistoriesNum),
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alive: atomic.NewBool(true),
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url: "",
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extra: sync.Map{}}
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}
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func urlToMetadata(rawURL string) (addr C.Metadata, err error) {
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@ -350,14 +354,24 @@ func (p *Proxy) determineFinalStoreType(store C.DelayHistoryStoreType, url strin
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return C.OriginalHistory
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}
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if p.extra == nil {
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store = C.ExtraHistory
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} else {
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if _, ok := p.extra[url]; ok {
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store = C.ExtraHistory
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} else if len(p.extra) < 2*C.DefaultMaxHealthCheckUrlNum {
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store = C.ExtraHistory
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}
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length := 0
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p.extra.Range(func(_, _ interface{}) bool {
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length++
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return length < 2*C.DefaultMaxHealthCheckUrlNum
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})
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if length == 0 {
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return C.ExtraHistory
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}
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_, ok := p.extra.Load(url)
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if ok {
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return C.ExtraHistory
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}
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if length < 2*C.DefaultMaxHealthCheckUrlNum {
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return C.ExtraHistory
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}
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return store
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}
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