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cowyo/vendor/github.com/gin-contrib/sessions/redis/redis.go
2018-07-31 12:40:32 -07:00

97 lines
2.7 KiB
Go

package redis
import (
"errors"
"github.com/boj/redistore"
"github.com/gin-contrib/sessions"
"github.com/gomodule/redigo/redis"
gsessions "github.com/gorilla/sessions"
)
type Store interface {
sessions.Store
}
// size: maximum number of idle connections.
// network: tcp or udp
// address: host:port
// password: redis-password
// Keys are defined in pairs to allow key rotation, but the common case is to set a single
// authentication key and optionally an encryption key.
//
// The first key in a pair is used for authentication and the second for encryption. The
// encryption key can be set to nil or omitted in the last pair, but the authentication key
// is required in all pairs.
//
// It is recommended to use an authentication key with 32 or 64 bytes. The encryption key,
// if set, must be either 16, 24, or 32 bytes to select AES-128, AES-192, or AES-256 modes.
func NewStore(size int, network, address, password string, keyPairs ...[]byte) (Store, error) {
s, err := redistore.NewRediStore(size, network, address, password, keyPairs...)
if err != nil {
return nil, err
}
return &store{s}, nil
}
// NewStoreWithDB - like NewStore but accepts `DB` parameter to select
// redis DB instead of using the default one ("0")
//
// Ref: https://godoc.org/github.com/boj/redistore#NewRediStoreWithDB
func NewStoreWithDB(size int, network, address, password, DB string, keyPairs ...[]byte) (Store, error) {
s, err := redistore.NewRediStoreWithDB(size, network, address, password, DB, keyPairs...)
if err != nil {
return nil, err
}
return &store{s}, nil
}
// NewStoreWithPool instantiates a RediStore with a *redis.Pool passed in.
//
// Ref: https://godoc.org/github.com/boj/redistore#NewRediStoreWithPool
func NewStoreWithPool(pool *redis.Pool, keyPairs ...[]byte) (Store, error) {
s, err := redistore.NewRediStoreWithPool(pool, keyPairs...)
if err != nil {
return nil, err
}
return &store{s}, nil
}
type store struct {
*redistore.RediStore
}
// GetRedisStore get the actual woking stiore.
//
// Ref: https://godoc.org/github.com/boj/redistore#RediStore
func GetRedisStore(s Store) (err error, rediStore *redistore.RediStore) {
realStore, ok := s.(*store)
if !ok {
err = errors.New("unable to get the redis store: Store isn't *store")
}
rediStore = realStore.RediStore
return
}
// SetKeyPrefix sets the key prefix in the redis database.
func SetKeyPrefix(s Store, prefix string) error {
err, rediStore := GetRedisStore(s)
if err != nil {
return err
}
rediStore.SetKeyPrefix(prefix)
return nil
}
func (c *store) Options(options sessions.Options) {
c.RediStore.Options = &gsessions.Options{
Path: options.Path,
Domain: options.Domain,
MaxAge: options.MaxAge,
Secure: options.Secure,
HttpOnly: options.HttpOnly,
}
}