org.apache.flink.runtime.resourcemanager.slotmanager.DeclarativeTaskManagerSlot 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.api.common.JobID;
import org.apache.flink.runtime.clusterframework.types.AllocationID;
import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
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 javax.annotation.Nullable;
/**
* A DeclarativeTaskManagerSlot represents a slot located in a TaskExecutor. It contains the
* necessary information for initiating the allocation of the slot, and keeps track of the state of
* the slot.
*
* This class is the declarative-resource-management version of the {@link TaskManagerSlot}.
*/
class DeclarativeTaskManagerSlot implements TaskManagerSlotInformation {
/** The unique identification of this slot. */
private final SlotID slotId;
/** The resource profile of this slot. */
private final ResourceProfile resourceProfile;
/** Gateway to the TaskExecutor which owns the slot. */
private final TaskExecutorConnection taskManagerConnection;
/** Job id for which this slot has been allocated. */
@Nullable private JobID jobId;
private SlotState state = SlotState.FREE;
private long allocationStartTimeStamp;
public DeclarativeTaskManagerSlot(
SlotID slotId,
ResourceProfile resourceProfile,
TaskExecutorConnection taskManagerConnection) {
this.slotId = slotId;
this.resourceProfile = resourceProfile;
this.taskManagerConnection = taskManagerConnection;
}
@Override
public SlotState getState() {
return state;
}
@Override
public SlotID getSlotId() {
return slotId;
}
@Override
public AllocationID getAllocationId() {
throw new UnsupportedOperationException();
}
@Override
public ResourceProfile getResourceProfile() {
return resourceProfile;
}
@Override
public TaskExecutorConnection getTaskManagerConnection() {
return taskManagerConnection;
}
@Nullable
@Override
public JobID getJobId() {
return jobId;
}
@Override
public InstanceID getInstanceId() {
return taskManagerConnection.getInstanceID();
}
public long getAllocationStartTimestamp() {
return allocationStartTimeStamp;
}
public void startAllocation(JobID jobId) {
Preconditions.checkState(
state == SlotState.FREE, "Slot must be free to be assigned a slot request.");
this.jobId = jobId;
this.state = SlotState.PENDING;
this.allocationStartTimeStamp = System.currentTimeMillis();
}
public void completeAllocation() {
Preconditions.checkState(
state == SlotState.PENDING,
"In order to complete an allocation, the slot has to be allocated.");
this.state = SlotState.ALLOCATED;
}
public void freeSlot() {
Preconditions.checkState(
state == SlotState.PENDING || state == SlotState.ALLOCATED,
"Slot must be allocated or pending before freeing it.");
this.jobId = null;
this.state = SlotState.FREE;
this.allocationStartTimeStamp = 0;
}
@Override
public String toString() {
return "DeclarativeTaskManagerSlot{"
+ "slotId="
+ slotId
+ ", resourceProfile="
+ resourceProfile
+ ", taskManagerConnection="
+ taskManagerConnection
+ ", jobId="
+ jobId
+ ", state="
+ state
+ ", allocationStartTimeStamp="
+ allocationStartTimeStamp
+ '}';
}
}