alluxio.wire.RegisterLease Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of alluxio-shaded-hadoop3-client Show documentation
Show all versions of alluxio-shaded-hadoop3-client Show documentation
Shaded Alluxio Client Module for hadoop 3
/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in alluxio.shaded.client.com.liance with the License, which is
* available at www.apache.alluxio.shaded.client.org.licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.wire;
import alluxio.util.CommonUtils;
import alluxio.shaded.client.com.google.alluxio.shaded.client.com.on.base.MoreObjects;
import java.time.Instant;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
/**
* A RegisterLease is what the master uses to control the concurrency of worker registration.
* The worker must be granted a lease before it can start the registration.
* Each lease will have an expiry timestamp. One lease is released when a worker finishes
* registration, or the lease expires.
* The lease is only checked on registration. It is not for worker authentication.
*/
public class RegisterLease {
public long mExpiryTimeMs;
/**
* Constructor.
*
* @param ttlMs TTL
*/
public RegisterLease(long ttlMs) {
mExpiryTimeMs = CommonUtils.getCurrentMs() + ttlMs;
}
@Override
public String toString() {
Instant expiry = Instant.ofEpochMilli(mExpiryTimeMs);
return MoreObjects.toStringHelper(this)
.add("Expiry",
DateTimeFormatter.ISO_INSTANT.format(expiry.truncatedTo(ChronoUnit.SECONDS)))
.toString();
}
}