org.apache.flink.runtime.jobgraph.SavepointRestoreSettings Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.flink.runtime.jobgraph;
import java.io.Serializable;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* Savepoint restore settings.
*/
public class SavepointRestoreSettings implements Serializable {
private static final long serialVersionUID = 87377506900849777L;
/** No restore should happen. */
private final static SavepointRestoreSettings NONE = new SavepointRestoreSettings(null, false);
/** By default, be strict when restoring from a savepoint. */
private final static boolean DEFAULT_ALLOW_NON_RESTORED_STATE = false;
/** Savepoint restore path. */
private final String restorePath;
/**
* Flag indicating whether non restored state is allowed if the savepoint
* contains state for an operator that is not part of the job.
*/
private final boolean allowNonRestoredState;
/**
* Creates the restore settings.
*
* @param restorePath Savepoint restore path.
* @param allowNonRestoredState Ignore unmapped state.
*/
private SavepointRestoreSettings(String restorePath, boolean allowNonRestoredState) {
this.restorePath = restorePath;
this.allowNonRestoredState = allowNonRestoredState;
}
/**
* Returns whether to restore from savepoint.
* @return true
if should restore from savepoint.
*/
public boolean restoreSavepoint() {
return restorePath != null;
}
/**
* Returns the path to the savepoint to restore from.
* @return Path to the savepoint to restore from or null
if
* should not restore.
*/
public String getRestorePath() {
return restorePath;
}
/**
* Returns whether non restored state is allowed if the savepoint contains
* state that cannot be mapped back to the job.
*
* @return true
if non restored state is allowed if the savepoint
* contains state that cannot be mapped back to the job.
*/
public boolean allowNonRestoredState() {
return allowNonRestoredState;
}
@Override
public boolean equals(Object o) {
if (this == o) { return true; }
if (o == null || getClass() != o.getClass()) { return false; }
SavepointRestoreSettings that = (SavepointRestoreSettings) o;
return allowNonRestoredState == that.allowNonRestoredState &&
(restorePath != null ? restorePath.equals(that.restorePath) : that.restorePath == null);
}
@Override
public int hashCode() {
int result = restorePath != null ? restorePath.hashCode() : 0;
result = 31 * result + (allowNonRestoredState ? 1 : 0);
return result;
}
@Override
public String toString() {
if (restoreSavepoint()) {
return "SavepointRestoreSettings.forPath(" +
"restorePath='" + restorePath + '\'' +
", allowNonRestoredState=" + allowNonRestoredState +
')';
} else {
return "SavepointRestoreSettings.none()";
}
}
// ------------------------------------------------------------------------
public static SavepointRestoreSettings none() {
return NONE;
}
public static SavepointRestoreSettings forPath(String savepointPath) {
return forPath(savepointPath, DEFAULT_ALLOW_NON_RESTORED_STATE);
}
public static SavepointRestoreSettings forPath(String savepointPath, boolean allowNonRestoredState) {
checkNotNull(savepointPath, "Savepoint restore path.");
return new SavepointRestoreSettings(savepointPath, allowNonRestoredState);
}
}