mirror of
https://github.com/v2fly/v2ray-core.git
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93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package log
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import (
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"log"
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"os"
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"github.com/v2ray/v2ray-core/common/platform"
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)
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// AccessStatus is the status of an access request from clients.
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type AccessStatus string
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const (
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AccessAccepted = AccessStatus("accepted")
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AccessRejected = AccessStatus("rejected")
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)
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type accessLogger interface {
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Log(from, to string, status AccessStatus, reason string)
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}
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type noOpAccessLogger struct {
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}
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func (logger *noOpAccessLogger) Log(from, to string, status AccessStatus, reason string) {
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// Swallow
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}
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type accessLog struct {
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From string
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To string
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Status AccessStatus
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Reason string
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}
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type fileAccessLogger struct {
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queue chan *accessLog
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logger *log.Logger
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file *os.File
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}
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func (logger *fileAccessLogger) close() {
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logger.file.Close()
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}
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func (logger *fileAccessLogger) Log(from, to string, status AccessStatus, reason string) {
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select {
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case logger.queue <- &accessLog{
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From: from,
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To: to,
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Status: status,
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Reason: reason,
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}:
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default:
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// We don't expect this to happen, but don't want to block main thread as well.
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}
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}
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func (logger *fileAccessLogger) Run() {
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for entry := range logger.queue {
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logger.logger.Println(entry.From + " " + string(entry.Status) + " " + entry.To + " " + entry.Reason)
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}
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}
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func newFileAccessLogger(path string) accessLogger {
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file, err := os.OpenFile(path, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
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if err != nil {
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log.Printf("Unable to create or open file (%s): %v%s", path, err, platform.LineSeparator())
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return nil
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}
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return &fileAccessLogger{
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queue: make(chan *accessLog, 16),
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logger: log.New(file, "", log.Ldate|log.Ltime),
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file: file,
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}
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}
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var accessLoggerInstance accessLogger = &noOpAccessLogger{}
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// InitAccessLogger initializes the access logger to write into the give file.
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func InitAccessLogger(file string) {
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logger := newFileAccessLogger(file)
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if logger != nil {
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go logger.(*fileAccessLogger).Run()
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accessLoggerInstance = logger
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}
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}
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// Access writes an access log.
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func Access(from, to string, status AccessStatus, reason string) {
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accessLoggerInstance.Log(from, to, status, reason)
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}
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