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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file 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, 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.elasticsearch.snapshots;
/**
* Represents the state that a snapshot can be in
*/
public enum SnapshotState {
/**
* Snapshot process has started
*/
IN_PROGRESS((byte) 0, false, false),
/**
* Snapshot process completed successfully
*/
SUCCESS((byte) 1, true, true),
/**
* Snapshot failed
*/
FAILED((byte) 2, true, false),
/**
* Snapshot was partial successful
*/
PARTIAL((byte) 3, true, true),
/**
* Snapshot is incompatible with the current version of the cluster
*/
INCOMPATIBLE((byte) 4, true, false);
private final byte value;
private final boolean completed;
private final boolean restorable;
SnapshotState(byte value, boolean completed, boolean restorable) {
this.value = value;
this.completed = completed;
this.restorable = restorable;
}
/**
* Returns code that represents the snapshot state
*
* @return code for the state
*/
public byte value() {
return value;
}
/**
* Returns true if snapshot completed (successfully or not)
*
* @return true if snapshot completed, false otherwise
*/
public boolean completed() {
return completed;
}
/**
* Returns true if snapshot can be restored (at least partially)
*
* @return true if snapshot can be restored, false otherwise
*/
public boolean restorable() {
return restorable;
}
/**
* Generate snapshot state from code
*
* @param value the state code
* @return state
*/
public static SnapshotState fromValue(byte value) {
switch (value) {
case 0:
return IN_PROGRESS;
case 1:
return SUCCESS;
case 2:
return FAILED;
case 3:
return PARTIAL;
case 4:
return INCOMPATIBLE;
default:
throw new IllegalArgumentException("No snapshot state for value [" + value + "]");
}
}
}