/
AbstractTaskProducer.java
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/
AbstractTaskProducer.java
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/*
* Copyright 2016 the original author or authors.
*
* 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 io.atomix.group.task.internal;
import io.atomix.group.internal.GroupCommands;
import io.atomix.group.task.TaskFailedException;
import io.atomix.group.task.TaskProducer;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentHashMap;
/**
* Abstract task producer.
*
* @author <a href="http://github.com/kuujo>Jordan Halterman</a>
*/
public abstract class AbstractTaskProducer<T> implements TaskProducer<T> {
protected final String name;
protected volatile Options options;
protected final AbstractTaskClient client;
private long taskId;
private final Map<Long, CompletableFuture<Void>> taskFutures = new ConcurrentHashMap<>();
protected AbstractTaskProducer(String name, Options options, AbstractTaskClient client) {
this.name = name;
this.options = options;
this.client = client;
}
/**
* Returns the producer name.
*
* @return The producer name.
*/
String name() {
return name;
}
/**
* Sets the producer options.
*/
void setOptions(Options options) {
this.options = options;
}
/**
* Called when a task is acknowledged.
*
* @param taskId The task ID.
*/
public void onAck(long taskId) {
CompletableFuture<Void> taskFuture = taskFutures.remove(taskId);
if (taskFuture != null) {
taskFuture.complete(null);
}
}
/**
* Called when a task is failed.
*
* @param taskId The task ID.
*/
public void onFail(long taskId) {
CompletableFuture<Void> taskFuture = taskFutures.remove(taskId);
if (taskFuture != null) {
taskFuture.completeExceptionally(new TaskFailedException("task failed"));
}
}
/**
* Submits the task to the given member.
*/
protected CompletableFuture<Void> submit(String member, T task) {
CompletableFuture<Void> future = new CompletableFuture<>();
final long taskId = ++this.taskId;
taskFutures.put(taskId, future);
client.submitter().submit(new GroupCommands.Submit(member, name, taskId, task, options.getRoutingStrategy(), options.getFailoverStrategy())).whenComplete((result, error) -> {
if (error != null) {
CompletableFuture<Void> taskFuture = taskFutures.remove(taskId);
if (taskFuture != null) {
taskFuture.completeExceptionally(error);
}
}
});
return future;
}
@Override
public void close() {
client.close(this);
}
}