kalix.scalasdk.replicatedentity.ReplicatedCounter.scala Maven / Gradle / Ivy
/*
* Copyright 2021 Lightbend Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kalix.scalasdk.replicatedentity
import kalix.javasdk.impl.replicatedentity.ReplicatedCounterImpl
import kalix.protocol.replicated_entity.ReplicatedEntityDelta
/** A counter that can be incremented and decremented. */
class ReplicatedCounter private[scalasdk] (override val delegate: ReplicatedCounterImpl)
extends InternalReplicatedData {
/**
* Get the current value of the counter.
*
* @return
* the current value of the counter
*/
def value: Long = delegate.getValue
/**
* Increment the counter.
*
* If `amount` is negative, then the counter will be decremented by that much instead.
*
* @param amount
* the amount to increment the counter by
* @return
* a new counter with incremented value
*/
def increment(amount: Long): ReplicatedCounter =
new ReplicatedCounter(delegate.increment(amount))
/**
* Decrement the counter.
*
* If `amount` is negative, then the counter will be incremented by that much instead.
*
* @param amount
* the amount to decrement the counter by
* @return
* a new counter with decremented value
*/
def decrement(amount: Long): ReplicatedCounter =
new ReplicatedCounter(delegate.decrement(amount))
final override type Self = ReplicatedCounter
final override def resetDelta(): ReplicatedCounter =
new ReplicatedCounter(delegate.resetDelta())
final override def applyDelta: PartialFunction[ReplicatedEntityDelta.Delta, ReplicatedCounter] =
delegate.applyDelta.andThen(new ReplicatedCounter(_))
}