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session_writer.go
280 lines (252 loc) · 6.58 KB
/
session_writer.go
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package session
import (
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"net/http"
"strconv"
"strings"
"time"
)
//--------------
//--- writer ---
//--------------
// WriteToResponseWriter 将session数据写入到返回中
func (s *Session) WriteToResponseWriter(w http.ResponseWriter) error {
expiry := s.GetExpiry()
s.lastAccessTime = time.Now()
// 如果设置了闲置时间
j, err := encodeToJSON(s.id, s.data, s.deadline)
if err != nil {
return err
}
err = s.Write(j)
if err != nil {
return err
}
// 如果是客户端存储,要更新token值
ce, ok := s.store.(clientStore)
if ok {
s.token, err = ce.MakeToken(j, expiry)
if err != nil {
return err
}
}
// 设置cookie
cookie := &http.Cookie{
Name: s.opts.name,
Value: s.token,
Path: s.opts.path,
Domain: s.opts.domain,
Secure: s.opts.secure,
HttpOnly: s.opts.httpOnly,
}
if s.opts.persist == true {
// Round up expiry time to the nearest second.
cookie.Expires = time.Unix(expiry.Unix()+1, 0)
cookie.MaxAge = int(expiry.Sub(time.Now()).Seconds() + 1)
}
// 重写存在的cookie
var set bool
for i, h := range w.Header()["Set-Cookie"] {
if strings.HasPrefix(h, fmt.Sprintf("%s=", s.opts.name)) {
w.Header()["Set-Cookie"][i] = cookie.String()
set = true
break
}
}
// 如果不存在,则新生成一个
if !set {
http.SetCookie(w, cookie)
}
return nil
}
// PutToResponseWriter 存入,存在则替换
func (s *Session) PutToResponseWriter(w http.ResponseWriter, key string, val interface{}) error {
s.mu.Lock()
s.data[key] = val
s.mu.Unlock()
return s.WriteToResponseWriter(w)
}
// PopFromResponseWriter 移除并返回
func (s *Session) PopFromResponseWriter(w http.ResponseWriter, key string) (interface{}, bool, error) {
s.mu.Lock()
v, exists := s.data[key]
if exists == false {
s.mu.Unlock()
return nil, false, nil
}
delete(s.data, key)
s.mu.Unlock()
err := s.WriteToResponseWriter(w)
if err != nil {
return nil, false, err
}
return v, true, nil
}
// PutStringToResponseWriter 存储string
func (s *Session) PutStringToResponseWriter(w http.ResponseWriter, key string, val string) error {
return s.PutToResponseWriter(w, key, val)
}
// PopStringFromResponseWriter 移除并返回
func (s *Session) PopStringFromResponseWriter(w http.ResponseWriter, key string) (string, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return "", err
}
if exists == false {
return "", nil
}
str, ok := v.(string)
if ok == false {
return "", ErrTypeAssertionFailed
}
return str, nil
}
// PutBoolToResponseWriter 存储
func (s *Session) PutBoolToResponseWriter(w http.ResponseWriter, key string, val bool) error {
return s.PutToResponseWriter(w, key, val)
}
// PopBoolFromResponseWriter 移除并返回
func (s *Session) PopBoolFromResponseWriter(w http.ResponseWriter, key string) (bool, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return false, err
}
if exists == false {
return false, nil
}
b, ok := v.(bool)
if ok == false {
return false, ErrTypeAssertionFailed
}
return b, nil
}
// PutIntToResponseWriter 存储
func (s *Session) PutIntToResponseWriter(w http.ResponseWriter, key string, val int) error {
return s.PutToResponseWriter(w, key, val)
}
// PopIntFromResponseWriter 移除并返回
func (s *Session) PopIntFromResponseWriter(w http.ResponseWriter, key string) (int, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return 0, err
}
if exists == false {
return 0, nil
}
switch v := v.(type) {
case int:
return v, nil
case json.Number:
return strconv.Atoi(v.String())
}
return 0, ErrTypeAssertionFailed
}
// PutInt64ToResponseWriter 存储
func (s *Session) PutInt64ToResponseWriter(w http.ResponseWriter, key string, val int64) error {
return s.PutToResponseWriter(w, key, val)
}
// PopInt64FromResponseWriter 移除并返回
func (s *Session) PopInt64FromResponseWriter(w http.ResponseWriter, key string) (int64, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return 0, err
}
if exists == false {
return 0, nil
}
switch v := v.(type) {
case int64:
return v, nil
case json.Number:
return v.Int64()
}
return 0, ErrTypeAssertionFailed
}
// PutFloat64ToResponseWriter 存储
func (s *Session) PutFloat64ToResponseWriter(w http.ResponseWriter, key string, val float64) error {
return s.PutToResponseWriter(w, key, val)
}
// PopFloat64FromResponseWriter 移除并返回
func (s *Session) PopFloat64FromResponseWriter(w http.ResponseWriter, key string) (float64, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return 0, err
}
if exists == false {
return 0, nil
}
switch v := v.(type) {
case float64:
return v, nil
case json.Number:
return v.Float64()
}
return 0, ErrTypeAssertionFailed
}
// PutTimeToResponseWriter 存储
func (s *Session) PutTimeToResponseWriter(w http.ResponseWriter, key string, val time.Time) error {
return s.PutToResponseWriter(w, key, val)
}
// PopTimeFromResponseWriter 移除并返回
func (s *Session) PopTimeFromResponseWriter(w http.ResponseWriter, key string) (time.Time, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return time.Time{}, err
}
if exists == false {
return time.Time{}, nil
}
switch v := v.(type) {
case time.Time:
return v, nil
case string:
return time.Parse(time.RFC3339, v)
}
return time.Time{}, ErrTypeAssertionFailed
}
// PutBytesToResponseWriter 存储
func (s *Session) PutBytesToResponseWriter(w http.ResponseWriter, key string, val []byte) error {
return s.PutToResponseWriter(w, key, val)
}
// PopBytesFromResponseWriter 移除并返回
func (s *Session) PopBytesFromResponseWriter(w http.ResponseWriter, key string) ([]byte, error) {
v, exists, err := s.PopFromResponseWriter(w, key)
if err != nil {
return nil, err
}
if exists == false {
return nil, nil
}
switch v := v.(type) {
case []byte:
return v, nil
case string:
return base64.StdEncoding.DecodeString(v)
}
return nil, ErrTypeAssertionFailed
}
// PutObject 存入,存在则替换
func (s *Session) PutObjectToResponseWriter(w http.ResponseWriter, key string, val interface{}) error {
if val == nil {
return errors.New("value must not be nil")
}
b, err := gobEncode(val)
if err != nil {
return err
}
return s.PutBytesToResponseWriter(w, key, b)
}
// PopObject 移除并返回
func (s *Session) PopObjectFromResponseWriter(w http.ResponseWriter, key string, dst interface{}) error {
b, err := s.PopBytesFromResponseWriter(w, key)
if err != nil {
return err
}
if b == nil {
return nil
}
return gobDecode(b, dst)
}