| /* |
| * Copyright 1999-2015 dangdang.com. |
| * <p> |
| * 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. |
| * </p> |
| */ |
| |
| package io.elasticjob.cloud.scheduler.mesos; |
| |
| import io.elasticjob.cloud.scheduler.env.BootstrapEnvironment; |
| import io.elasticjob.cloud.scheduler.env.FrameworkConfiguration; |
| import io.elasticjob.cloud.context.TaskContext; |
| import com.google.common.base.Function; |
| import com.google.common.collect.Collections2; |
| import com.google.common.util.concurrent.AbstractScheduledService; |
| import lombok.RequiredArgsConstructor; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.mesos.Protos; |
| import org.apache.mesos.SchedulerDriver; |
| |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| /** |
| * 协调Mesos与调度器之间的作业状态. |
| * |
| * @author gaohongtao |
| */ |
| @RequiredArgsConstructor |
| @Slf4j |
| public class ReconcileService extends AbstractScheduledService { |
| |
| private final SchedulerDriver schedulerDriver; |
| |
| private final FacadeService facadeService; |
| |
| private final ReentrantLock lock = new ReentrantLock(); |
| |
| @Override |
| protected void runOneIteration() throws Exception { |
| lock.lock(); |
| try { |
| explicitReconcile(); |
| implicitReconcile(); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| /** |
| * 全量的显示协调. |
| */ |
| public void explicitReconcile() { |
| lock.lock(); |
| try { |
| Set<TaskContext> runningTask = new HashSet<>(); |
| for (Set<TaskContext> each : facadeService.getAllRunningTasks().values()) { |
| runningTask.addAll(each); |
| } |
| if (runningTask.isEmpty()) { |
| return; |
| } |
| log.info("Requesting {} tasks reconciliation with the Mesos master", runningTask.size()); |
| schedulerDriver.reconcileTasks(Collections2.transform(runningTask, new Function<TaskContext, Protos.TaskStatus>() { |
| @Override |
| public Protos.TaskStatus apply(final TaskContext input) { |
| return Protos.TaskStatus.newBuilder() |
| .setTaskId(Protos.TaskID.newBuilder().setValue(input.getId()).build()) |
| .setSlaveId(Protos.SlaveID.newBuilder().setValue(input.getSlaveId()).build()) |
| .setState(Protos.TaskState.TASK_RUNNING).build(); |
| } |
| })); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| /** |
| * 隐式协调. |
| */ |
| public void implicitReconcile() { |
| lock.lock(); |
| try { |
| schedulerDriver.reconcileTasks(Collections.<Protos.TaskStatus>emptyList()); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| @Override |
| protected Scheduler scheduler() { |
| FrameworkConfiguration configuration = BootstrapEnvironment.getInstance().getFrameworkConfiguration(); |
| return Scheduler.newFixedDelaySchedule(configuration.getReconcileIntervalMinutes(), configuration.getReconcileIntervalMinutes(), TimeUnit.MINUTES); |
| } |
| } |