redis/js_export.go

136 lines
4.3 KiB
Go

package redis
import (
"context"
"errors"
"strings"
"apigo.cc/go/id"
"apigo.cc/go/jsmod"
)
func init() {
jsmod.Register("redis", map[string]any{
// 入口:支持别名获取,不传则默认 "default"
"Get": func(ctx context.Context, name *string) (*jsRedis, error) {
target := "default"
if name != nil {
target = *name
}
rd := GetRedis(target, nil)
if rd.Error != nil {
return nil, rd.Error
}
return &jsRedis{rd: rd, ctx: ctx}, nil
},
// 默认快捷调用 (面向 "default" 实例)
"Do": func(ctx context.Context, cmd string, args ...any) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
if jr.rd.Error != nil {
return nil, jr.rd.Error
}
res := jr.Do(cmd, args...)
return res, res.Error
},
// 常用命令平铺 (面向 "default" 实例)
"SET": func(ctx context.Context, key string, val any) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
res := jr.Do("SET", key, val)
return res, res.Error
},
"GET": func(ctx context.Context, key string) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
res := jr.Do("GET", key)
return res, res.Error
},
"DEL": func(ctx context.Context, key string) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
res := jr.Do("DEL", key)
return res, res.Error
},
"EXISTS": func(ctx context.Context, key string) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
res := jr.Do("EXISTS", key)
return res, res.Error
},
"EXPIRE": func(ctx context.Context, key string, seconds int) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
res := jr.Do("EXPIRE", key, seconds)
return res, res.Error
},
"PUBLISH": func(ctx context.Context, channel, data string) (*Result, error) {
jr := &jsRedis{rd: GetRedis("default", nil), ctx: ctx}
res := jr.Do("PUBLISH", channel, data)
return res, res.Error
},
})
}
type jsRedis struct {
rd *Redis
ctx context.Context
idMaker *id.IDMaker
}
var errSafeMode = errors.New("redis operation is restricted in safe mode")
// 核心写操作指令集
var writeCommands = map[string]bool{
"SET": true, "SETEX": true, "SETNX": true, "MSET": true, "MSETNX": true,
"DEL": true, "EXPIRE": true, "EXPIREAT": true, "PEXPIRE": true, "PEXPIREAT": true,
"HSET": true, "HSETNX": true, "HDEL": true, "HMSET": true,
"LPUSH": true, "RPUSH": true, "LPOP": true, "RPOP": true, "LREM": true, "LTRIM": true,
"SADD": true, "SREM": true, "SPOP": true, "SMOVE": true,
"ZADD": true, "ZREM": true, "ZREMRANGEBYRANK": true, "ZREMRANGEBYSCORE": true,
"PUBLISH": true, "FLUSHDB": true, "FLUSHALL": true,
}
func (jr *jsRedis) checkSafe(cmd string) error {
if jsmod.IsSafeMode(jr.ctx) {
cmd = strings.ToUpper(cmd)
if writeCommands[cmd] || !strings.Contains(" GET EXISTS ZRANGE HGET HGETALL SMEMBERS SISMEMBER LINDEX LLEN ", " "+cmd+" ") {
// 严格模式:不在白名单内的或在黑名单内的都禁止
return errSafeMode
}
}
return nil
}
func (jr *jsRedis) Do(cmd string, args ...any) *Result {
if err := jr.checkSafe(cmd); err != nil {
return &Result{Error: err}
}
return jr.rd.Do(cmd, args...)
}
// 实例方法 PascalCase 对齐
func (jr *jsRedis) SET(key string, val any) *Result { return jr.Do("SET", key, val) }
func (jr *jsRedis) GET(key string) *Result { return jr.Do("GET", key) }
func (jr *jsRedis) DEL(key string) *Result { return jr.Do("DEL", key) }
func (jr *jsRedis) EXISTS(key string) *Result { return jr.Do("EXISTS", key) }
func (jr *jsRedis) EXPIRE(key string, s int) *Result { return jr.Do("EXPIRE", key, s) }
func (jr *jsRedis) HSET(key, field string, v any) *Result { return jr.Do("HSET", key, field, v) }
func (jr *jsRedis) HGET(key, field string) *Result { return jr.Do("HGET", key, field) }
func (jr *jsRedis) PUBLISH(ch, data string) *Result { return jr.Do("PUBLISH", ch, data) }
// ID Generation
func (jr *jsRedis) MakeID(size int, forDB *string) string {
if jr.idMaker == nil {
jr.idMaker = NewIDMaker(jr.rd)
}
dbType := ""
if forDB != nil {
dbType = strings.ToLower(*forDB)
}
switch dbType {
case "mysql":
return jr.idMaker.GetForMysql(size)
case "postgres", "pg", "pgsql":
return jr.idMaker.GetForPostgreSQL(size)
default:
return jr.idMaker.Get(size)
}
}