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40 lines
610 B
Go
40 lines
610 B
Go
package rq
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import (
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"math/rand"
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"zero/core/hash"
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)
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type HashChange struct {
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id int64
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oldHash *hash.ConsistentHash
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newHash *hash.ConsistentHash
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}
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func NewHashChange(oldHash, newHash *hash.ConsistentHash) HashChange {
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return HashChange{
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id: rand.Int63(),
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oldHash: oldHash,
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newHash: newHash,
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}
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}
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func (hc HashChange) GetId() int64 {
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return hc.id
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}
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func (hc HashChange) ShallEvict(key interface{}) bool {
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oldTarget, oldOk := hc.oldHash.Get(key)
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if !oldOk {
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return false
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}
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newTarget, newOk := hc.newHash.Get(key)
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if !newOk {
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return false
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}
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return oldTarget != newTarget
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}
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