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/*
* Copyright (c) OSGi Alliance (2015, 2017). All Rights Reserved.
*
* 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 org.osgi.util.pushstream;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Executor;
import java.util.concurrent.ScheduledExecutorService;
abstract class AbstractBufferBuilder<R, T, U extends BlockingQueue<PushEvent< ? extends T>>>
implements BufferBuilder<R,T,U> {
protected Executor worker;
protected ScheduledExecutorService timer;
protected int concurrency;
protected PushbackPolicy<T,U> backPressure;
protected QueuePolicy<T,U> bufferingPolicy;
protected U buffer;
@Override
public BufferBuilder<R,T,U> withBuffer(U queue) {
this.buffer = queue;
return this;
}
@Override
public BufferBuilder<R,T,U> withQueuePolicy(
QueuePolicy<T,U> queuePolicy) {
this.bufferingPolicy = queuePolicy;
return this;
}
@Override
public BufferBuilder<R,T,U> withQueuePolicy(
QueuePolicyOption queuePolicyOption) {
this.bufferingPolicy = queuePolicyOption.getPolicy();
return this;
}
@Override
public BufferBuilder<R,T,U> withPushbackPolicy(
PushbackPolicy<T,U> pushbackPolicy) {
this.backPressure = pushbackPolicy;
return this;
}
@Override
public BufferBuilder<R,T,U> withPushbackPolicy(
PushbackPolicyOption pushbackPolicyOption, long time) {
this.backPressure = pushbackPolicyOption.getPolicy(time);
return this;
}
@Override
public BufferBuilder<R,T,U> withParallelism(int parallelism) {
this.concurrency = parallelism;
return this;
}
@Override
public BufferBuilder<R,T,U> withExecutor(Executor executor) {
this.worker = executor;
return this;
}
@Override
public BufferBuilder<R,T,U> withScheduler(
ScheduledExecutorService scheduler) {
this.timer = scheduler;
return this;
}
}
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