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fix concurrent access crash for handler creator

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This commit is contained in:
Shelikhoo 2021-07-19 16:13:11 +01:00
parent 8fed55f69f
commit e2d526cd8b
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1 changed files with 10 additions and 0 deletions
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10
app/log/log_creator.go
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@ -3,6 +3,8 @@
package log
import (
"sync"
"github.com/v2fly/v2ray-core/v4/common"
"github.com/v2fly/v2ray-core/v4/common/log"
)
@ -15,16 +17,24 @@ type HandlerCreator func(LogType, HandlerCreatorOptions) (log.Handler, error)
var handlerCreatorMap = make(map[LogType]HandlerCreator)
var handlerCreatorMapLock = &sync.RWMutex{}
func RegisterHandlerCreator(logType LogType, f HandlerCreator) error {
if f == nil {
return newError("nil HandlerCreator")
}
handlerCreatorMapLock.Lock()
defer handlerCreatorMapLock.Unlock()
handlerCreatorMap[logType] = f
return nil
}
func createHandler(logType LogType, options HandlerCreatorOptions) (log.Handler, error) {
handlerCreatorMapLock.RLock()
defer handlerCreatorMapLock.RUnlock()
creator, found := handlerCreatorMap[logType]
if !found {
return nil, newError("unable to create log handler for ", logType)