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serial_writer.go
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/
serial_writer.go
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// Copyright 2022 Juan Pablo Tosso and the OWASP Coraza contributors
// SPDX-License-Identifier: Apache-2.0
package auditlog
import (
"io"
"log"
"os"
"github.com/lixf311/coraza/v3/experimental/plugins/plugintypes"
)
// serialWriter is used to store logs in a single file
type serialWriter struct {
io.Closer
logger log.Logger
formatter plugintypes.AuditLogFormatter
}
func (sl *serialWriter) Init(c plugintypes.AuditLogConfig) error {
sl.Closer = NoopCloser
if c.Target == "" {
return nil
}
var f io.Writer
switch c.Target {
case "/dev/stdout":
f = os.Stdout
case "/dev/stderr":
f = os.Stderr
default:
ff, err := os.OpenFile(c.Target, os.O_APPEND|os.O_CREATE|os.O_WRONLY, c.FileMode)
if err != nil {
return err
}
f = ff
sl.Closer = ff
}
sl.formatter = c.Formatter
sl.logger.SetFlags(0)
sl.logger.SetOutput(f)
return nil
}
func (sl *serialWriter) Write(al plugintypes.AuditLog) error {
if sl.formatter == nil {
return nil
}
bts, err := sl.formatter.Format(al)
if err != nil {
return err
}
sl.logger.Println(string(bts))
return nil
}
var _ plugintypes.AuditLogWriter = (*serialWriter)(nil)