001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.component.file.strategy; 018 019 import java.util.Map; 020 021 import org.apache.camel.Expression; 022 import org.apache.camel.component.file.GenericFileExclusiveReadLockStrategy; 023 import org.apache.camel.component.file.GenericFileProcessStrategy; 024 import org.apache.camel.util.ObjectHelper; 025 026 public final class GenericFileProcessStrategyFactory { 027 028 private GenericFileProcessStrategyFactory() { 029 } 030 031 @SuppressWarnings("unchecked") 032 public static GenericFileProcessStrategy createGenericFileProcessStrategy(Map<String, Object> params) { 033 034 // We assume a value is present only if its value not null for String and 'true' for boolean 035 boolean isNoop = params.get("noop") != null; 036 boolean isDelete = params.get("delete") != null; 037 Expression moveExpression = (Expression) params.get("move"); 038 Expression preMoveExpression = (Expression) params.get("preMove"); 039 040 if (isNoop) { 041 GenericFileNoOpProcessStrategy strategy = new GenericFileNoOpProcessStrategy(); 042 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 043 return strategy; 044 } else if (isDelete) { 045 GenericFileDeleteProcessStrategy strategy = new GenericFileDeleteProcessStrategy(); 046 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 047 return strategy; 048 } else if (moveExpression != null || preMoveExpression != null) { 049 GenericFileRenameProcessStrategy strategy = new GenericFileRenameProcessStrategy(); 050 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 051 if (moveExpression != null) { 052 GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer(); 053 renamer.setExpression(moveExpression); 054 strategy.setCommitRenamer(renamer); 055 } 056 if (preMoveExpression != null) { 057 GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer(); 058 renamer.setExpression(preMoveExpression); 059 strategy.setBeginRenamer(renamer); 060 } 061 return strategy; 062 } else { 063 // default strategy will do nothing 064 GenericFileNoOpProcessStrategy strategy = new GenericFileNoOpProcessStrategy(); 065 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 066 return strategy; 067 } 068 } 069 070 private static GenericFileExclusiveReadLockStrategy getExclusiveReadLockStrategy(Map<String, Object> params) { 071 GenericFileExclusiveReadLockStrategy strategy = (GenericFileExclusiveReadLockStrategy) params.get("exclusiveReadLockStrategy"); 072 if (strategy != null) { 073 return strategy; 074 } 075 076 // no explicit stategy set then fallback to readLock option 077 String readLock = (String) params.get("readLock"); 078 if (ObjectHelper.isNotEmpty(readLock)) { 079 if ("none".equals(readLock) || "false".equals(readLock)) { 080 return null; 081 } else if ("rename".equals(readLock)) { 082 GenericFileRenameExclusiveReadLockStrategy readLockStrategy = new GenericFileRenameExclusiveReadLockStrategy(); 083 Long timeout = (Long) params.get("readLockTimeout"); 084 if (timeout != null) { 085 readLockStrategy.setTimeout(timeout); 086 } 087 return readLockStrategy; 088 } 089 } 090 091 return null; 092 } 093 }