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/*
* Copyright (C) 2016, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
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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