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.CamelContext; 022 import org.apache.camel.Expression; 023 import org.apache.camel.component.file.GenericFileExclusiveReadLockStrategy; 024 import org.apache.camel.component.file.GenericFileProcessStrategy; 025 import org.apache.camel.util.ObjectHelper; 026 027 public final class GenericFileProcessStrategyFactory { 028 029 private GenericFileProcessStrategyFactory() { 030 } 031 032 @SuppressWarnings("unchecked") 033 public static GenericFileProcessStrategy createGenericFileProcessStrategy(CamelContext context, Map<String, Object> params) { 034 035 // We assume a value is present only if its value not null for String and 'true' for boolean 036 boolean isNoop = params.get("noop") != null; 037 boolean isDelete = params.get("delete") != null; 038 Expression moveExpression = (Expression) params.get("move"); 039 Expression preMoveExpression = (Expression) params.get("preMove"); 040 041 if (isNoop) { 042 GenericFileNoOpProcessStrategy strategy = new GenericFileNoOpProcessStrategy(); 043 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 044 return strategy; 045 } else if (isDelete) { 046 GenericFileDeleteProcessStrategy strategy = new GenericFileDeleteProcessStrategy(); 047 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 048 return strategy; 049 } else if (moveExpression != null || preMoveExpression != null) { 050 FileRenameProcessStrategy strategy = new FileRenameProcessStrategy(); 051 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 052 if (moveExpression != null) { 053 GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer(); 054 renamer.setExpression(moveExpression); 055 strategy.setCommitRenamer(renamer); 056 } 057 if (preMoveExpression != null) { 058 GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer(); 059 renamer.setExpression(preMoveExpression); 060 strategy.setBeginRenamer(renamer); 061 } 062 return strategy; 063 } else { 064 // default strategy will do nothing 065 GenericFileNoOpProcessStrategy strategy = new GenericFileNoOpProcessStrategy(); 066 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 067 return strategy; 068 } 069 } 070 071 private static GenericFileExclusiveReadLockStrategy getExclusiveReadLockStrategy(Map<String, Object> params) { 072 GenericFileExclusiveReadLockStrategy strategy = (GenericFileExclusiveReadLockStrategy) params.get("exclusiveReadLockStrategy"); 073 if (strategy != null) { 074 return strategy; 075 } 076 077 // no explicit stategy set then fallback to readLock option 078 String readLock = (String) params.get("readLock"); 079 if (ObjectHelper.isNotEmpty(readLock)) { 080 if ("none".equals(readLock) || "false".equals(readLock)) { 081 return null; 082 } else if ("rename".equals(readLock)) { 083 GenericFileRenameExclusiveReadLockStrategy readLockStrategy = new GenericFileRenameExclusiveReadLockStrategy(); 084 Long timeout = (Long) params.get("readLockTimeout"); 085 if (timeout != null) { 086 readLockStrategy.setTimeout(timeout); 087 } 088 return readLockStrategy; 089 } 090 } 091 092 return null; 093 } 094 }