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62 lines
1.3 KiB
62 lines
1.3 KiB
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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