mirror of
https://github.com/caddyserver/caddy.git
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67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
package middleware
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import (
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"log"
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"net/http"
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"os"
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)
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func RequestLog(p parser) Middleware {
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var logWhat, outputFile, format string
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var logger *log.Logger
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for p.Next() {
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p.Args(&logWhat, &outputFile, &format)
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if logWhat == "" {
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return p.ArgErr()
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}
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if outputFile == "" {
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outputFile = defaultLogFilename
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}
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switch format {
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case "":
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format = defaultReqLogFormat
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case "{common}":
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format = commonLogFormat
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case "{combined}":
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format = combinedLogFormat
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}
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}
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// Open the log file for writing when the server starts
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p.Startup(func() error {
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var err error
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var file *os.File
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if outputFile == "stdout" {
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file = os.Stdout
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} else if outputFile == "stderr" {
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file = os.Stderr
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} else {
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file, err = os.OpenFile(outputFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
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if err != nil {
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return err
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}
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}
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logger = log.New(file, "", 0)
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return nil
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})
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return func(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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sw := newResponseRecorder(w)
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next(sw, r)
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rep := newReplacer(r, sw)
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logger.Println(rep.replace(format))
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}
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}
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}
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const (
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defaultLogFilename = "access.log"
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commonLogFormat = `{remote} ` + emptyStringReplacer + ` [{when}] "{method} {uri} {proto}" {status} {size}`
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combinedLogFormat = commonLogFormat + ` "{>Referer}" "{>User-Agent}"`
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defaultReqLogFormat = commonLogFormat
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)
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