/
options.go
109 lines (92 loc) · 2.04 KB
/
options.go
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package mcache
import (
"context"
"errors"
"fmt"
"reflect"
"time"
"github.com/go-redis/redis/v8"
)
type Option func(*options)
type options struct {
RedisCli RedisCli
TTL time.Duration
LoaderFunc LoaderFunc
RealLoaderFunc LoaderFunc
MLoaderFunc MLoaderFunc
RealMLoaderFunc MLoaderFunc
DefaultVal interface{}
serializeFunc serializeFunc
deserializeFunc deserializeFunc
}
func WithRedisClient(client *redis.Client) Option {
return func(o *options) {
o.RedisCli = RedisCli{client}
}
}
func WithUnSafeValBind(valPtrFunc valPtrFunc) Option {
return func(o *options) {
var s = newMsgpackSerializer()
o.serializeFunc = func(ctx context.Context, val interface{}) (bs []byte, err error) {
var (
obj = valPtrFunc()
ot = reflect.TypeOf(obj)
rt = reflect.TypeOf(val)
)
defer func() {
rt = nil
ot = nil
obj = nil
}()
if ot.Kind() == reflect.Ptr {
ot = ot.Elem()
}
if rt.Kind() == reflect.Ptr {
rt = rt.Elem()
}
if ot.Kind() != rt.Kind() {
return nil, fmt.Errorf("mcache: unmached value type, expect %s, got %#v!", ot.Kind(), val)
}
return s.marshal(ctx, val)
}
o.deserializeFunc = func(ctx context.Context, data []byte) (v interface{}, err error) {
var (
obj = valPtrFunc()
ot = reflect.TypeOf(obj)
)
defer func() {
ot = nil
obj = nil
}()
if ot.Kind() != reflect.Ptr {
return nil, errors.New("mcache: valPtrFn must return a pointer type!")
}
return s.unmarshal(ctx, data, obj)
}
}
}
func WithTTL(ttl time.Duration) Option {
return func(o *options) {
o.TTL = ttl
}
}
func WithLoaderFn(fn LoaderFunc) Option {
return func(o *options) {
o.LoaderFunc = fn
}
}
func WithMLoaderFn(fn MLoaderFunc) Option {
return func(o *options) {
o.MLoaderFunc = fn
}
}
func WithDefaultVal(defaultVal interface{}) Option {
return func(o *options) {
o.DefaultVal = defaultVal
}
}
func WithRedisOptions(opts *redis.Options) Option {
return func(o *options) {
o.RedisCli = RedisCli{redis.NewClient(opts)}
}
}