63 lines
1.3 KiB
Go
63 lines
1.3 KiB
Go
package dao
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import (
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"context"
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"fmt"
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"go-common/library/cache/redis"
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)
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const (
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// view
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_viewPrefix = "v_%d_%d_%s"
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)
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func viewKey(pid, aid int64, ip string) (key string) {
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if ip == "" {
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// let it pass if ip is empty.
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return
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}
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return fmt.Sprintf(_viewPrefix, pid, aid, ip)
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}
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// Intercept intercepts illegal views.
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func (d *Dao) Intercept(c context.Context, pid, aid int64, ip string) (ban bool) {
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var (
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err error
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exist bool
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key = viewKey(pid, aid, ip)
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conn = d.redis.Get(c)
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)
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defer conn.Close()
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if key == "" {
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return
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}
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if exist, err = redis.Bool(conn.Do("EXISTS", key)); err != nil {
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PromError("redis:EXISTS播放数", "conn.Do(EXISTS, %s) error(%v)", key, err)
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return
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}
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if exist {
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ban = true
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return
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}
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if err = conn.Send("SET", key, ""); err != nil {
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PromError("redis:SET播放数", "conn.Send(EXPIRE, %s) error(%v)", key, err)
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return
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}
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if err = conn.Send("EXPIRE", key, d.viewCacheTTL); err != nil {
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PromError("redis:EXPIRE播放数", "conn.Send(EXPIRE, %s) error(%v)", key, err)
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return
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}
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if err = conn.Flush(); err != nil {
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PromError("redis:播放数缓存Flush", "conn.Flush error(%v)", err)
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return
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}
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for i := 0; i < 2; i++ {
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if _, err = conn.Receive(); err != nil {
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PromError("redis:播放数缓存Receive", "conn.Receive() error(%v)", err)
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return
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}
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}
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return
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}
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