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