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Apache Solr (module: core)
/*
* 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.solr.cluster.placement;
import java.util.HashMap;
import java.util.Map;
/**
* Exception thrown when a placement modification is rejected by the placement plugin. Additional
* details about the reasons are provided if available in {@link #getRejectedModifications()} or in
* the {@link #toString()} methods.
*/
public class PlacementModificationException extends PlacementException {
private final Map rejectedModifications = new HashMap<>();
public PlacementModificationException() {
super();
}
public PlacementModificationException(String message) {
super(message);
}
public PlacementModificationException(String message, Throwable cause) {
super(message, cause);
}
public PlacementModificationException(Throwable cause) {
super(cause);
}
/**
* Add information about the modification that cause this exception.
*
* @param modification requested modification details
* @param reason reason for rejection
*/
public void addRejectedModification(String modification, String reason) {
rejectedModifications.put(modification, reason);
}
/** Return rejected modifications and reasons for rejections. */
public Map getRejectedModifications() {
return rejectedModifications;
}
@Override
public String getMessage() {
if (rejectedModifications.isEmpty()) {
return super.getMessage();
}
StringBuilder sb = new StringBuilder(super.getMessage());
sb.append(": ").append(rejectedModifications.size()).append(" rejections:");
rejectedModifications.forEach(
(modification, reason) -> sb.append("\n").append(modification).append("\t").append(reason));
return sb.toString();
}
}