36 lines
888 B
Go
36 lines
888 B
Go
// Package realtimedata define real time data operation functions
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package realtimedata
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import (
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"context"
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"time"
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)
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// CacheItem define structure for caching real time data with calculation capabilities
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type CacheItem struct {
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key string
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value []any
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// TODO 增加实时数据的topic
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topic string
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cancelFunc context.CancelFunc
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calculatorFunc func(ctx context.Context, topic string, params []any)
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lastAccessed time.Time
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}
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// Reset defines func to reset the CacheItem to its zero state
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func (ci *CacheItem) Reset() {
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ci.key = ""
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ci.value = nil
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if ci.cancelFunc != nil {
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ci.cancelFunc()
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}
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ci.cancelFunc = nil
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ci.calculatorFunc = nil
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ci.lastAccessed = time.Time{}
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}
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// IsExpired defines func to check if the cache item has expired based on a given TTL
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func (ci *CacheItem) IsExpired(ttl time.Duration) bool {
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return time.Since(ci.lastAccessed) > ttl
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}
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