48 lines
1015 B
Go
48 lines
1015 B
Go
package models
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import (
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"fmt"
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"sync"
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"fiskerinc.com/modules/cache"
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"fiskerinc.com/modules/utils/envtool"
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)
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var (
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max_invalid_cache = envtool.GetEnvInt("MAX_INVALID_CANID_CACHE", 100)
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invalidCANIDOnce sync.Once
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invalidCANIDInstance InvalidCANIDCacheInterface
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)
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func NewInvalidCANIDCache() InvalidCANIDCacheInterface {
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return &InvalidCANIDCache{
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ringMap: cache.NewRingMap(max_invalid_cache),
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}
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}
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func GetInvalidCANIDCache() InvalidCANIDCacheInterface {
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invalidCANIDOnce.Do(func() {
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if invalidCANIDInstance == nil {
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invalidCANIDInstance = NewInvalidCANIDCache()
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}
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})
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return invalidCANIDInstance
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}
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func SetInvalidCANIDCache(instance InvalidCANIDCacheInterface) {
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invalidCANIDInstance = instance
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}
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type InvalidCANIDCacheInterface interface {
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Exists(dbc string, can_id int32) bool
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}
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type InvalidCANIDCache struct {
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ringMap *cache.RingMap
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}
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func (i *InvalidCANIDCache) Exists(dbc string, can_id int32) bool {
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return !i.ringMap.Set(fmt.Sprintf("%s:%d", dbc[0:4], can_id), false)
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}
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