chore: cleanup patch code

adapter/provider/healthcheck.go

@@ -27,6 +27,8 @@ type extraOption struct {
 }
 
 type HealthCheck struct {
+	ctx            context.Context
+	ctxCancel      context.CancelFunc
 	url            string
 	extra          map[string]*extraOption
 	mu             sync.Mutex
@@ -36,7 +38,6 @@ type HealthCheck struct {
 	lazy           bool
 	expectedStatus utils.IntRanges[uint16]
 	lastTouch      atomic.TypedValue[time.Time]
-	done           chan struct{}
 	singleDo       *singledo.Single[struct{}]
 	timeout        time.Duration
 }
@@ -59,7 +60,7 @@ func (hc *HealthCheck) process() {
 			} else {
 				log.Debugln("Skip once health check because we are lazy")
 			}
-		case <-hc.done:
+		case <-hc.ctx.Done():
 			ticker.Stop()
 			hc.stop()
 			return
@@ -146,7 +147,7 @@ func (hc *HealthCheck) check() {
 	_, _, _ = hc.singleDo.Do(func() (struct{}, error) {
 		id := utils.NewUUIDV4().String()
 		log.Debugln("Start New Health Checking {%s}", id)
-		b, _ := batch.New[bool](context.Background(), batch.WithConcurrencyNum[bool](10))
+		b, _ := batch.New[bool](hc.ctx, batch.WithConcurrencyNum[bool](10))
 
 		// execute default health check
 		option := &extraOption{filters: nil, expectedStatus: hc.expectedStatus}
@@ -195,7 +196,7 @@ func (hc *HealthCheck) execute(b *batch.Batch[bool], url, uid string, option *ex
 
 		p := proxy
 		b.Go(p.Name(), func() (bool, error) {
-			ctx, cancel := context.WithTimeout(context.Background(), hc.timeout)
+			ctx, cancel := context.WithTimeout(hc.ctx, hc.timeout)
 			defer cancel()
 			log.Debugln("Health Checking, proxy: %s, url: %s, id: {%s}", p.Name(), url, uid)
 			_, _ = p.URLTest(ctx, url, expectedStatus)
@@ -206,7 +207,7 @@ func (hc *HealthCheck) execute(b *batch.Batch[bool], url, uid string, option *ex
 }
 
 func (hc *HealthCheck) close() {
-	hc.done <- struct{}{}
+	hc.ctxCancel()
 }
 
 func NewHealthCheck(proxies []C.Proxy, url string, timeout uint, interval uint, lazy bool, expectedStatus utils.IntRanges[uint16]) *HealthCheck {
@@ -217,8 +218,11 @@ func NewHealthCheck(proxies []C.Proxy, url string, timeout uint, interval uint,
 	if timeout == 0 {
 		timeout = 5000
 	}
+	ctx, cancel := context.WithCancel(context.Background())
 
 	return &HealthCheck{
+		ctx:            ctx,
+		ctxCancel:      cancel,
 		proxies:        proxies,
 		url:            url,
 		timeout:        time.Duration(timeout) * time.Millisecond,
@@ -226,7 +230,6 @@ func NewHealthCheck(proxies []C.Proxy, url string, timeout uint, interval uint,
 		interval:       time.Duration(interval) * time.Second,
 		lazy:           lazy,
 		expectedStatus: expectedStatus,
-		done:           make(chan struct{}, 1),
 		singleDo:       singledo.NewSingle[struct{}](time.Second),
 	}
 }

adapter/provider/patch_android.go

@@ -14,23 +14,6 @@ type UpdatableProvider interface {
 	UpdatedAt() time.Time
 }
 
-func (pp *proxySetProvider) UpdatedAt() time.Time {
-	return pp.Fetcher.UpdatedAt
-}
-
-func (pp *proxySetProvider) Close() error {
-	pp.healthCheck.close()
-	pp.Fetcher.Destroy()
-
-	return nil
-}
-
-func (cp *compatibleProvider) Close() error {
-	cp.healthCheck.close()
-
-	return nil
-}
-
 func Suspend(s bool) {
 	suspended = s
 }

adapter/provider/provider.go

@@ -54,7 +54,7 @@ func (pp *proxySetProvider) MarshalJSON() ([]byte, error) {
 		"proxies":          pp.Proxies(),
 		"testUrl":          pp.healthCheck.url,
 		"expectedStatus":   pp.healthCheck.expectedStatus.String(),
-		"updatedAt":        pp.UpdatedAt,
+		"updatedAt":        pp.UpdatedAt(),
 		"subscriptionInfo": pp.subscriptionInfo,
 	})
 }
@@ -164,9 +164,9 @@ func (pp *proxySetProvider) closeAllConnections() {
 	})
 }
 
-func stopProxyProvider(pd *ProxySetProvider) {
-	pd.healthCheck.close()
-	_ = pd.Fetcher.Destroy()
+func (pp *proxySetProvider) Close() error {
+	pp.healthCheck.close()
+	return pp.Fetcher.Close()
 }
 
 func NewProxySetProvider(name string, interval time.Duration, filter string, excludeFilter string, excludeType string, dialerProxy string, override OverrideSchema, vehicle types.Vehicle, hc *HealthCheck) (*ProxySetProvider, error) {
@@ -200,10 +200,15 @@ func NewProxySetProvider(name string, interval time.Duration, filter string, exc
 	fetcher := resource.NewFetcher[[]C.Proxy](name, interval, vehicle, proxiesParseAndFilter(filter, excludeFilter, excludeTypeArray, filterRegs, excludeFilterReg, dialerProxy, override), proxiesOnUpdate(pd))
 	pd.Fetcher = fetcher
 	wrapper := &ProxySetProvider{pd}
-	runtime.SetFinalizer(wrapper, stopProxyProvider)
+	runtime.SetFinalizer(wrapper, (*ProxySetProvider).Close)
 	return wrapper, nil
 }
 
+func (pp *ProxySetProvider) Close() error {
+	runtime.SetFinalizer(pp, nil)
+	return pp.proxySetProvider.Close()
+}
+
 // CompatibleProvider for auto gc
 type CompatibleProvider struct {
 	*compatibleProvider
@@ -274,8 +279,9 @@ func (cp *compatibleProvider) RegisterHealthCheckTask(url string, expectedStatus
 	cp.healthCheck.registerHealthCheckTask(url, expectedStatus, filter, interval)
 }
 
-func stopCompatibleProvider(pd *CompatibleProvider) {
-	pd.healthCheck.close()
+func (cp *compatibleProvider) Close() error {
+	cp.healthCheck.close()
+	return nil
 }
 
 func NewCompatibleProvider(name string, proxies []C.Proxy, hc *HealthCheck) (*CompatibleProvider, error) {
@@ -294,10 +300,15 @@ func NewCompatibleProvider(name string, proxies []C.Proxy, hc *HealthCheck) (*Co
 	}
 
 	wrapper := &CompatibleProvider{pd}
-	runtime.SetFinalizer(wrapper, stopCompatibleProvider)
+	runtime.SetFinalizer(wrapper, (*CompatibleProvider).Close)
 	return wrapper, nil
 }
 
+func (cp *CompatibleProvider) Close() error {
+	runtime.SetFinalizer(cp, nil)
+	return cp.compatibleProvider.Close()
+}
+
 func proxiesOnUpdate(pd *proxySetProvider) func([]C.Proxy) {
 	return func(elm []C.Proxy) {
 		pd.setProxies(elm)

component/resource/fetcher.go

@@ -2,6 +2,7 @@ package resource
 
 import (
 	"bytes"
+	"context"
 	"crypto/md5"
 	"os"
 	"path/filepath"
@@ -22,11 +23,12 @@ var (
 type Parser[V any] func([]byte) (V, error)
 
 type Fetcher[V any] struct {
+	ctx          context.Context
+	ctxCancel    context.CancelFunc
 	resourceType string
 	name         string
 	vehicle      types.Vehicle
-	UpdatedAt    time.Time
-	done         chan struct{}
+	updatedAt    time.Time
 	hash         [16]byte
 	parser       Parser[V]
 	interval     time.Duration
@@ -46,6 +48,10 @@ func (f *Fetcher[V]) VehicleType() types.VehicleType {
 	return f.vehicle.Type()
 }
 
+func (f *Fetcher[V]) UpdatedAt() time.Time {
+	return f.updatedAt
+}
+
 func (f *Fetcher[V]) Initial() (V, error) {
 	var (
 		buf         []byte
@@ -57,15 +63,15 @@ func (f *Fetcher[V]) Initial() (V, error) {
 	if stat, fErr := os.Stat(f.vehicle.Path()); fErr == nil {
 		buf, err = os.ReadFile(f.vehicle.Path())
 		modTime := stat.ModTime()
-		f.UpdatedAt = modTime
+		f.updatedAt = modTime
 		isLocal = true
 		if f.interval != 0 && modTime.Add(f.interval).Before(time.Now()) {
 			log.Warnln("[Provider] %s not updated for a long time, force refresh", f.Name())
 			forceUpdate = true
 		}
 	} else {
-		buf, err = f.vehicle.Read()
-		f.UpdatedAt = time.Now()
+		buf, err = f.vehicle.Read(f.ctx)
+		f.updatedAt = time.Now()
 	}
 
 	if err != nil {
@@ -75,7 +81,7 @@ func (f *Fetcher[V]) Initial() (V, error) {
 	var contents V
 	if forceUpdate {
 		var forceBuf []byte
-		if forceBuf, err = f.vehicle.Read(); err == nil {
+		if forceBuf, err = f.vehicle.Read(f.ctx); err == nil {
 			if contents, err = f.parser(forceBuf); err == nil {
 				isLocal = false
 				buf = forceBuf
@@ -93,7 +99,7 @@ func (f *Fetcher[V]) Initial() (V, error) {
 		}
 
 		// parse local file error, fallback to remote
-		buf, err = f.vehicle.Read()
+		buf, err = f.vehicle.Read(f.ctx)
 		if err != nil {
 			return lo.Empty[V](), err
 		}
@@ -136,15 +142,18 @@ func (f *Fetcher[V]) Initial() (V, error) {
 }
 
 func (f *Fetcher[V]) Update() (V, bool, error) {
-	buf, err := f.vehicle.Read()
+	buf, err := f.vehicle.Read(f.ctx)
 	if err != nil {
 		return lo.Empty[V](), false, err
 	}
+	return f.SideUpdate(buf)
+}
 
+func (f *Fetcher[V]) SideUpdate(buf []byte) (V, bool, error) {
 	now := time.Now()
 	hash := md5.Sum(buf)
 	if bytes.Equal(f.hash[:], hash[:]) {
-		f.UpdatedAt = now
+		f.updatedAt = now
 		_ = os.Chtimes(f.vehicle.Path(), now, now)
 		return lo.Empty[V](), true, nil
 	}
@@ -160,16 +169,14 @@ func (f *Fetcher[V]) Update() (V, bool, error) {
 		}
 	}
 
-	f.UpdatedAt = now
+	f.updatedAt = now
 	f.hash = hash
 
 	return contents, false, nil
 }
 
-func (f *Fetcher[V]) Destroy() error {
-	if f.interval > 0 {
-		f.done <- struct{}{}
-	}
+func (f *Fetcher[V]) Close() error {
+	f.ctxCancel()
 	if f.watcher != nil {
 		_ = f.watcher.Close()
 	}
@@ -177,7 +184,7 @@ func (f *Fetcher[V]) Destroy() error {
 }
 
 func (f *Fetcher[V]) pullLoop() {
-	initialInterval := f.interval - time.Since(f.UpdatedAt)
+	initialInterval := f.interval - time.Since(f.updatedAt)
 	if initialInterval > f.interval {
 		initialInterval = f.interval
 	}
@@ -189,7 +196,7 @@ func (f *Fetcher[V]) pullLoop() {
 		case <-timer.C:
 			timer.Reset(f.interval)
 			f.update(f.vehicle.Path())
-		case <-f.done:
+		case <-f.ctx.Done():
 			return
 		}
 	}
@@ -226,12 +233,13 @@ func safeWrite(path string, buf []byte) error {
 }
 
 func NewFetcher[V any](name string, interval time.Duration, vehicle types.Vehicle, parser Parser[V], onUpdate func(V)) *Fetcher[V] {
-
+	ctx, cancel := context.WithCancel(context.Background())
 	return &Fetcher[V]{
+		ctx:       ctx,
+		ctxCancel: cancel,
 		name:      name,
 		vehicle:   vehicle,
 		parser:    parser,
-		done:     make(chan struct{}, 8),
 		OnUpdate:  onUpdate,
 		interval:  interval,
 	}

component/resource/vehicle.go

@@ -24,7 +24,7 @@ func (f *FileVehicle) Path() string {
 	return f.path
 }
 
-func (f *FileVehicle) Read() ([]byte, error) {
+func (f *FileVehicle) Read(ctx context.Context) ([]byte, error) {
 	return os.ReadFile(f.path)
 }
 
@@ -59,8 +59,8 @@ func (h *HTTPVehicle) Proxy() string {
 	return h.proxy
 }
 
-func (h *HTTPVehicle) Read() ([]byte, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*20)
+func (h *HTTPVehicle) Read(ctx context.Context) ([]byte, error) {
+	ctx, cancel := context.WithTimeout(ctx, time.Second*20)
 	defer cancel()
 	resp, err := mihomoHttp.HttpRequestWithProxy(ctx, h.url, http.MethodGet, h.header, nil, h.proxy)
 	if err != nil {

config/config.go

@@ -431,9 +431,8 @@ func Parse(buf []byte) (*Config, error) {
 	return ParseRawConfig(rawCfg)
 }
 
-func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
-	// config with default value
-	rawCfg := &RawConfig{
+func DefaultRawConfig() *RawConfig {
+	return &RawConfig{
 		AllowLan:          false,
 		BindAddress:       "*",
 		LanAllowedIPs:     []netip.Prefix{netip.MustParsePrefix("0.0.0.0/0"), netip.MustParsePrefix("::/0")},
@@ -544,6 +543,11 @@ func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
 		},
 		ExternalUIURL: "https://github.com/MetaCubeX/metacubexd/archive/refs/heads/gh-pages.zip",
 	}
+}
+
+func UnmarshalRawConfig(buf []byte) (*RawConfig, error) {
+	// config with default value
+	rawCfg := DefaultRawConfig()
 
 	if err := yaml.Unmarshal(buf, rawCfg); err != nil {
 		return nil, err

constant/provider/interface.go

@@ -1,6 +1,7 @@
 package provider
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/metacubex/mihomo/common/utils"
@@ -31,7 +32,7 @@ func (v VehicleType) String() string {
 }
 
 type Vehicle interface {
-	Read() ([]byte, error)
+	Read(ctx context.Context) ([]byte, error)
 	Path() string
 	Proxy() string
 	Type() VehicleType
@@ -83,6 +84,7 @@ type ProxyProvider interface {
 type RuleProvider interface {
 	Provider
 	Behavior() RuleBehavior
+	Count() int
 	Match(*constant.Metadata) bool
 	ShouldResolveIP() bool
 	ShouldFindProcess() bool

rules/provider/patch_android.go

@@ -12,16 +12,6 @@ type UpdatableProvider interface {
 	UpdatedAt() time.Time
 }
 
-func (rp *ruleSetProvider) UpdatedAt() time.Time {
-	return rp.Fetcher.UpdatedAt
-}
-
-func (rp *ruleSetProvider) Close() error {
-	rp.Fetcher.Destroy()
-
-	return nil
-}
-
 func Suspend(s bool) {
 	suspended = s
 }

rules/provider/provider.go

@@ -89,6 +89,10 @@ func (rp *ruleSetProvider) Behavior() P.RuleBehavior {
 	return rp.behavior
 }
 
+func (rp *ruleSetProvider) Count() int {
+	return rp.strategy.Count()
+}
+
 func (rp *ruleSetProvider) Match(metadata *C.Metadata) bool {
 	return rp.strategy != nil && rp.strategy.Match(metadata)
 }
@@ -113,11 +117,16 @@ func (rp *ruleSetProvider) MarshalJSON() ([]byte, error) {
 			"name":        rp.Name(),
 			"ruleCount":   rp.strategy.Count(),
 			"type":        rp.Type().String(),
-			"updatedAt":   rp.UpdatedAt,
+			"updatedAt":   rp.UpdatedAt(),
 			"vehicleType": rp.VehicleType().String(),
 		})
 }
 
+func (rp *RuleSetProvider) Close() error {
+	runtime.SetFinalizer(rp, nil)
+	return rp.ruleSetProvider.Close()
+}
+
 func NewRuleSetProvider(name string, behavior P.RuleBehavior, format P.RuleFormat, interval time.Duration, vehicle P.Vehicle,
 	parse func(tp, payload, target string, params []string, subRules map[string][]C.Rule) (parsed C.Rule, parseErr error)) P.RuleProvider {
 	rp := &ruleSetProvider{
@@ -139,8 +148,7 @@ func NewRuleSetProvider(name string, behavior P.RuleBehavior, format P.RuleForma
 		rp,
 	}
 
-	final := func(provider *RuleSetProvider) { _ = rp.Fetcher.Destroy() }
-	runtime.SetFinalizer(wrapper, final)
+	runtime.SetFinalizer(wrapper, (*RuleSetProvider).Close)
 	return wrapper
 }