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/*
* Copyright (C) 2016, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.ketch;
import java.util.Date;
import org.eclipse.jgit.annotations.Nullable;
import org.eclipse.jgit.lib.ObjectId;
/**
* A snapshot of a replica.
*
* @see LeaderSnapshot
*/
public class ReplicaSnapshot {
final KetchReplica replica;
ObjectId accepted;
ObjectId committed;
KetchReplica.State state;
String error;
long retryAtMillis;
ReplicaSnapshot(KetchReplica replica) {
this.replica = replica;
}
/**
* Get the replica this snapshot describes the state of
*
* @return the replica this snapshot describes the state of
*/
public KetchReplica getReplica() {
return replica;
}
/**
* Get current state of the replica
*
* @return current state of the replica
*/
public KetchReplica.State getState() {
return state;
}
/**
* Get last known Git commit at {@code refs/txn/accepted}
*
* @return last known Git commit at {@code refs/txn/accepted}
*/
@Nullable
public ObjectId getAccepted() {
return accepted;
}
/**
* Get last known Git commit at {@code refs/txn/committed}
*
* @return last known Git commit at {@code refs/txn/committed}
*/
@Nullable
public ObjectId getCommitted() {
return committed;
}
/**
* Get error message
*
* @return if {@link #getState()} ==
* {@link org.eclipse.jgit.internal.ketch.KetchReplica.State#OFFLINE}
* an optional human-readable message from the transport system
* explaining the failure.
*/
@Nullable
public String getErrorMessage() {
return error;
}
/**
* Get when the leader will retry communication with the offline or lagging
* replica
*
* @return time (usually in the future) when the leader will retry
* communication with the offline or lagging replica; null if no
* retry is scheduled or necessary.
*/
@Nullable
public Date getRetryAt() {
return retryAtMillis > 0 ? new Date(retryAtMillis) : null;
}
}
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