clash/adapter/provider/provider.go

323 lines
6.7 KiB
Go

package provider
import (
"encoding/json"
"errors"
"fmt"
"runtime"
"time"
"github.com/Dreamacro/clash/adapter"
"github.com/Dreamacro/clash/adapter/outbound"
"github.com/Dreamacro/clash/common/singledo"
C "github.com/Dreamacro/clash/constant"
types "github.com/Dreamacro/clash/constant/provider"
regexp "github.com/dlclark/regexp2"
"github.com/samber/lo"
"gopkg.in/yaml.v3"
)
var reject = adapter.NewProxy(outbound.NewReject())
const (
ReservedName = "default"
)
type ProxySchema struct {
Proxies []map[string]any `yaml:"proxies"`
}
// for auto gc
type ProxySetProvider struct {
*proxySetProvider
}
type proxySetProvider struct {
*fetcher
proxies []C.Proxy
healthCheck *HealthCheck
}
func (pp *proxySetProvider) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]any{
"name": pp.Name(),
"type": pp.Type().String(),
"vehicleType": pp.VehicleType().String(),
"proxies": pp.Proxies(),
"updatedAt": pp.updatedAt,
})
}
func (pp *proxySetProvider) Name() string {
return pp.name
}
func (pp *proxySetProvider) HealthCheck() {
pp.healthCheck.checkAll()
}
func (pp *proxySetProvider) Update() error {
elm, same, err := pp.fetcher.Update()
if err == nil && !same {
pp.onUpdate(elm)
}
return err
}
func (pp *proxySetProvider) Initial() error {
elm, err := pp.fetcher.Initial()
if err != nil {
return err
}
pp.onUpdate(elm)
return nil
}
func (pp *proxySetProvider) Type() types.ProviderType {
return types.Proxy
}
func (pp *proxySetProvider) Proxies() []C.Proxy {
return pp.proxies
}
func (pp *proxySetProvider) Touch() {
pp.healthCheck.touch()
}
func (pp *proxySetProvider) setProxies(proxies []C.Proxy) {
pp.proxies = proxies
pp.healthCheck.setProxy(proxies)
if pp.healthCheck.auto() {
go pp.healthCheck.checkAll()
}
}
func stopProxyProvider(pd *ProxySetProvider) {
pd.healthCheck.close()
pd.fetcher.Destroy()
}
func NewProxySetProvider(name string, interval time.Duration, filter string, vehicle types.Vehicle, hc *HealthCheck) (*ProxySetProvider, error) {
filterReg, err := regexp.Compile(filter, regexp.None)
if err != nil {
return nil, fmt.Errorf("invalid filter regex: %w", err)
}
if hc.auto() {
go hc.process()
}
pd := &proxySetProvider{
proxies: []C.Proxy{},
healthCheck: hc,
}
onUpdate := func(elm any) {
ret := elm.([]C.Proxy)
pd.setProxies(ret)
}
proxiesParseAndFilter := func(buf []byte) (any, error) {
schema := &ProxySchema{}
if err := yaml.Unmarshal(buf, schema); err != nil {
return nil, err
}
if schema.Proxies == nil {
return nil, errors.New("file must have a `proxies` field")
}
proxies := []C.Proxy{}
for idx, mapping := range schema.Proxies {
if name, ok := mapping["name"].(string); ok && len(filter) > 0 {
matched, err := filterReg.MatchString(name)
if err != nil {
return nil, fmt.Errorf("regex filter failed: %w", err)
}
if !matched {
continue
}
}
proxy, err := adapter.ParseProxy(mapping)
if err != nil {
return nil, fmt.Errorf("proxy %d error: %w", idx, err)
}
proxies = append(proxies, proxy)
}
if len(proxies) == 0 {
if len(filter) > 0 {
return nil, errors.New("doesn't match any proxy, please check your filter")
}
return nil, errors.New("file doesn't have any proxy")
}
return proxies, nil
}
fetcher := newFetcher(name, interval, vehicle, proxiesParseAndFilter, onUpdate)
pd.fetcher = fetcher
wrapper := &ProxySetProvider{pd}
runtime.SetFinalizer(wrapper, stopProxyProvider)
return wrapper, nil
}
// for auto gc
type CompatibleProvider struct {
*compatibleProvider
}
type compatibleProvider struct {
name string
healthCheck *HealthCheck
proxies []C.Proxy
}
func (cp *compatibleProvider) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]any{
"name": cp.Name(),
"type": cp.Type().String(),
"vehicleType": cp.VehicleType().String(),
"proxies": cp.Proxies(),
})
}
func (cp *compatibleProvider) Name() string {
return cp.name
}
func (cp *compatibleProvider) HealthCheck() {
cp.healthCheck.checkAll()
}
func (cp *compatibleProvider) Update() error {
return nil
}
func (cp *compatibleProvider) Initial() error {
return nil
}
func (cp *compatibleProvider) VehicleType() types.VehicleType {
return types.Compatible
}
func (cp *compatibleProvider) Type() types.ProviderType {
return types.Proxy
}
func (cp *compatibleProvider) Proxies() []C.Proxy {
return cp.proxies
}
func (cp *compatibleProvider) Touch() {
cp.healthCheck.touch()
}
func stopCompatibleProvider(pd *CompatibleProvider) {
pd.healthCheck.close()
}
func NewCompatibleProvider(name string, proxies []C.Proxy, hc *HealthCheck) (*CompatibleProvider, error) {
if len(proxies) == 0 {
return nil, errors.New("provider need one proxy at least")
}
if hc.auto() {
go hc.process()
}
pd := &compatibleProvider{
name: name,
proxies: proxies,
healthCheck: hc,
}
wrapper := &CompatibleProvider{pd}
runtime.SetFinalizer(wrapper, stopCompatibleProvider)
return wrapper, nil
}
var _ types.ProxyProvider = (*FilterableProvider)(nil)
type FilterableProvider struct {
name string
providers []types.ProxyProvider
filterReg *regexp.Regexp
single *singledo.Single
}
func (fp *FilterableProvider) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]any{
"name": fp.Name(),
"type": fp.Type().String(),
"vehicleType": fp.VehicleType().String(),
"proxies": fp.Proxies(),
})
}
func (fp *FilterableProvider) Name() string {
return fp.name
}
func (fp *FilterableProvider) HealthCheck() {
}
func (fp *FilterableProvider) Update() error {
return nil
}
func (fp *FilterableProvider) Initial() error {
return nil
}
func (fp *FilterableProvider) VehicleType() types.VehicleType {
return types.Compatible
}
func (fp *FilterableProvider) Type() types.ProviderType {
return types.Proxy
}
func (fp *FilterableProvider) Proxies() []C.Proxy {
elm, _, _ := fp.single.Do(func() (any, error) {
proxies := lo.FlatMap(
fp.providers,
func(item types.ProxyProvider, _ int) []C.Proxy {
return lo.Filter(
item.Proxies(),
func(item C.Proxy, _ int) bool {
matched, _ := fp.filterReg.MatchString(item.Name())
return matched
})
})
if len(proxies) == 0 {
proxies = append(proxies, reject)
}
return proxies, nil
})
return elm.([]C.Proxy)
}
func (fp *FilterableProvider) Touch() {
for _, provider := range fp.providers {
provider.Touch()
}
}
func NewFilterableProvider(name string, providers []types.ProxyProvider, filterReg *regexp.Regexp) *FilterableProvider {
return &FilterableProvider{
name: name,
providers: providers,
filterReg: filterReg,
single: singledo.NewSingle(time.Second * 10),
}
}