001/* 002 * (C) Copyright 2017-2018 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bdelbosc 018 */ 019package org.nuxeo.elasticsearch.core; 020 021import org.apache.commons.lang3.StringUtils; 022import org.nuxeo.elasticsearch.api.IndexNameGenerator; 023 024/** 025 * @since 9.3 026 */ 027public class IncrementalIndexNameGenerator implements IndexNameGenerator { 028 protected static final String SEP = "-"; 029 030 @Override 031 public String getNextIndexName(String aliasName, String oldIndexName) { 032 if (StringUtils.isEmpty(oldIndexName)) { 033 return aliasName + SEP + "0000"; 034 } 035 int i = oldIndexName.lastIndexOf(SEP); 036 if (i < 0) { 037 throw new IllegalArgumentException("Invalid index name: " + oldIndexName); 038 } 039 int index = Integer.parseInt(oldIndexName.substring(i + 1)) + 1; 040 return String.format("%s%s%04d", aliasName, SEP, index); 041 } 042}