/**
* 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 org.apache.aurora.scheduler.base;
import java.util.Objects;
import com.google.common.base.Preconditions;
import org.apache.aurora.gen.InstanceKey;
import org.apache.aurora.scheduler.storage.entities.IInstanceKey;
import org.apache.aurora.scheduler.storage.entities.IJobKey;
/**
* Utility function for {@link IInstanceKey instance keys}.
*/
public final class InstanceKeys {
private InstanceKeys() {
// Utility class.
}
/**
* Creates an instance key from a job and instance ID.
*
* @param job Job key.
* @param instanceId Instance id.
* @return Instance ID.
*/
public static IInstanceKey from(IJobKey job, int instanceId) {
Objects.requireNonNull(job);
Preconditions.checkArgument(instanceId >= 0);
return IInstanceKey.build(new InstanceKey(job.newBuilder(), instanceId));
}
/**
* Creates a human-friendly string for an instance key.
*
* @param instance Instance key.
* @return String representation of the instance key.
*/
public static String toString(IInstanceKey instance) {
return JobKeys.canonicalString(instance.getJobKey()) + "/" + instance.getInstanceId();
}
}