/
setup.go
158 lines (150 loc) · 2.99 KB
/
setup.go
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package log
import (
"errors"
"fmt"
super "github.com/caibirdme/durian/server"
"github.com/mholt/caddy"
"github.com/valyala/fasthttp"
"strconv"
"strings"
"time"
)
func init() {
caddy.RegisterPlugin(super.DirectiveLog, caddy.Plugin{
ServerType: super.FastHTTPServerType,
Action: setupAccess,
})
}
func setupAccess(c *caddy.Controller) error {
cfg, err := parseConfig(c)
if err != nil {
return err
}
logWriter, sync, err := NewLogger(*cfg)
if nil != err {
return fmt.Errorf("[log] init log error: %s", err)
}
if sync != nil {
c.OnShutdown(sync)
}
super.GetConfig(c).AddNamedMiddleware(super.LogMiddlewareName, func(next fasthttp.RequestHandler) fasthttp.RequestHandler {
return func(ctx *fasthttp.RequestCtx) {
next(ctx)
logWriter.Write(ctx)
}
})
return nil
}
func parseConfig(c *caddy.Controller) (*LogConfig, error) {
c.Next()
cfg := LogConfig{}
block := false
for c.NextBlock() {
block = true
kind := c.Val()
switch strings.ToLower(kind) {
case "access_path":
if !c.NextArg() {
return nil, c.ArgErr()
}
cfg.AccessPath = c.Val()
case "err_path":
if !c.NextArg() {
return nil, c.ArgErr()
}
cfg.ErrPath = c.Val()
case "format":
format, err := parseFormat(c)
if err != nil {
return nil, err
}
cfg.Format = format
case "buffer":
if !c.NextArg() {
return nil, c.ArgErr()
}
size, err := parseSize(c.Val())
if nil != err {
return nil, c.Err(err.Error())
}
cfg.Buffer = size
case "flush":
if !c.NextArg() {
return nil, c.ArgErr()
}
d, err := time.ParseDuration(c.Val())
if nil != err {
return nil, c.Err(err.Error())
}
cfg.Flush = d
}
}
if !block {
return nil, c.Err("log related config should be written in a block")
}
return &cfg, nil
}
func parseSize(s string) (int, error) {
s = strings.Trim(s, " ")
size, err := strconv.Atoi(s[:len(s)-1])
if nil != err {
return 0, err
}
unit := s[len(s)-1]
switch unit {
case 'k', 'K':
return size * 1024, nil
case 'm', 'M':
return size * 1024 * 1024, nil
case 'g', 'G':
return size * 1024 * 1024 * 1024, nil
default:
return 0, errors.New("invalid unit")
}
}
var (
defaultFormat = []string{
entryKeyRemoteAddr,
entryKeyHost,
entryKeyMethod,
entryKeyRequestURI,
entryKeyStatusCode,
entryStartTime,
entryKeyProcessTime,
entryKeyBytesSent,
entryReferer,
entryKeyUA,
}
)
func parseFormat(c *caddy.Controller) ([]string, error) {
if !c.NextArg() {
return defaultFormat, nil
}
if c.Val() != "{" {
return nil, c.ArgErr()
}
arr := make([]string, 0, 6)
hash := make(map[string]struct{})
foundRightParen := false
for c.Next() {
if c.Val() == "}" {
foundRightParen = true
break
}
if _, ok := hash[c.Val()]; !ok {
arr = append(arr, c.Val())
hash[c.Val()] = struct{}{}
}
}
if !foundRightParen {
return nil, c.Err("not found right paren")
}
return arr, nil
}
type LogConfig struct {
AccessPath string
ErrPath string
Format []string
Buffer int
Flush time.Duration
}