org.apache.flink.runtime.resourcemanager.slotmanager.TaskManagerRegistration Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.runtime.resourcemanager.slotmanager;
import org.apache.flink.runtime.clusterframework.types.SlotID;
import org.apache.flink.runtime.instance.InstanceID;
import org.apache.flink.runtime.resourcemanager.registration.TaskExecutorConnection;
import org.apache.flink.util.Preconditions;
import java.util.Collection;
import java.util.HashSet;
public class TaskManagerRegistration {
private final TaskExecutorConnection taskManagerConnection;
private final HashSet slots;
private int numberFreeSlots;
/** Timestamp when the last time becoming idle. Otherwise Long.MAX_VALUE. */
private long idleSince;
public TaskManagerRegistration(
TaskExecutorConnection taskManagerConnection,
Collection slots) {
this.taskManagerConnection = Preconditions.checkNotNull(taskManagerConnection, "taskManagerConnection");
Preconditions.checkNotNull(slots, "slots");
this.slots = new HashSet<>(slots);
this.numberFreeSlots = slots.size();
idleSince = System.currentTimeMillis();
}
public TaskExecutorConnection getTaskManagerConnection() {
return taskManagerConnection;
}
public InstanceID getInstanceId() {
return taskManagerConnection.getInstanceID();
}
public int getNumberRegisteredSlots() {
return slots.size();
}
public int getNumberFreeSlots() {
return numberFreeSlots;
}
public void freeSlot() {
Preconditions.checkState(
numberFreeSlots < slots.size(),
"The number of free slots cannot exceed the number of registered slots. This indicates a bug.");
numberFreeSlots++;
if (numberFreeSlots == getNumberRegisteredSlots() && idleSince == Long.MAX_VALUE) {
idleSince = System.currentTimeMillis();
}
}
public void occupySlot() {
Preconditions.checkState(
numberFreeSlots > 0,
"There are no more free slots. This indicates a bug.");
numberFreeSlots--;
idleSince = Long.MAX_VALUE;
}
public Iterable getSlots() {
return slots;
}
public long getIdleSince() {
return idleSince;
}
public boolean isIdle() {
return idleSince != Long.MAX_VALUE;
}
public void markUsed() {
idleSince = Long.MAX_VALUE;
}
public boolean containsSlot(SlotID slotId) {
return slots.contains(slotId);
}
}