org.apache.flink.runtime.clusterframework.types.SlotID Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.flink.runtime.clusterframework.types;
import java.io.Serializable;
import static org.apache.flink.util.Preconditions.checkArgument;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* Unique identifier for a slot on a TaskManager. This ID is constant across the
* life time of the TaskManager.
*
* In contrast, the {@link AllocationID} represents the a slot allocation and changes
* every time the slot is allocated by a JobManager.
*/
public class SlotID implements ResourceIDRetrievable, Serializable {
private static final long serialVersionUID = -6399206032549807771L;
/** The resource id which this slot located */
private final ResourceID resourceId;
/** The numeric id for single slot */
private final int slotNumber;
public SlotID(ResourceID resourceId, int slotNumber) {
checkArgument(0 <= slotNumber, "Slot number must be positive.");
this.resourceId = checkNotNull(resourceId, "ResourceID must not be null");
this.slotNumber = slotNumber;
}
// ------------------------------------------------------------------------
@Override
public ResourceID getResourceID() {
return resourceId;
}
public int getSlotNumber() {
return slotNumber;
}
// ------------------------------------------------------------------------
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SlotID slotID = (SlotID) o;
return slotNumber == slotID.slotNumber && resourceId.equals(slotID.resourceId);
}
@Override
public int hashCode() {
int result = resourceId.hashCode();
result = 31 * result + slotNumber;
return result;
}
@Override
public String toString() {
return resourceId + "_" + slotNumber;
}
}