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.io.File; 020 import java.util.Map; 021 022 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.language.simple.FileLanguage; 026 import org.apache.camel.util.ObjectHelper; 027 028 public final class FileProcessStrategyFactory { 029 030 private FileProcessStrategyFactory() { 031 } 032 033 public static GenericFileProcessStrategy createGenericFileProcessStrategy(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<File> strategy = new GenericFileNoOpProcessStrategy<File>(); 043 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 044 return strategy; 045 } else if (isDelete) { 046 GenericFileDeleteProcessStrategy<File> strategy = new GenericFileDeleteProcessStrategy<File>(); 047 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 048 return strategy; 049 } else if (moveExpression != null || preMoveExpression != null) { 050 GenericFileRenameProcessStrategy<File> strategy = new GenericFileRenameProcessStrategy<File>(); 051 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 052 if (moveExpression != null) { 053 GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); 054 renamer.setExpression(moveExpression); 055 strategy.setCommitRenamer(renamer); 056 } 057 if (preMoveExpression != null) { 058 GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); 059 renamer.setExpression(preMoveExpression); 060 strategy.setBeginRenamer(renamer); 061 } 062 return strategy; 063 } else { 064 // default strategy will move files in a .camel/ subfolder where the file was consumed 065 GenericFileRenameProcessStrategy<File> strategy = new GenericFileRenameProcessStrategy<File>(); 066 strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); 067 Expression exp = FileLanguage.file("${file:parent}/.camel/${file:onlyname}"); 068 strategy.setCommitRenamer(new GenericFileExpressionRenamer<File>(exp)); 069 return strategy; 070 } 071 } 072 073 @SuppressWarnings("unchecked") 074 private static GenericFileExclusiveReadLockStrategy<File> getExclusiveReadLockStrategy(Map<String, Object> params) { 075 GenericFileExclusiveReadLockStrategy strategy = (GenericFileExclusiveReadLockStrategy) params.get("exclusiveReadLockStrategy"); 076 if (strategy != null) { 077 return strategy; 078 } 079 080 // no explicit stategy set then fallback to readLock option 081 String readLock = (String) params.get("readLock"); 082 if (ObjectHelper.isNotEmpty(readLock)) { 083 if ("none".equals(readLock) || "false".equals(readLock)) { 084 return null; 085 } else if ("fileLock".equals(readLock)) { 086 GenericFileExclusiveReadLockStrategy<File> readLockStrategy = new FileLockExclusiveReadLockStrategy(); 087 Long timeout = (Long) params.get("readLockTimeout"); 088 if (timeout != null) { 089 readLockStrategy.setTimeout(timeout); 090 } 091 return readLockStrategy; 092 } else if ("rename".equals(readLock)) { 093 GenericFileExclusiveReadLockStrategy<File> readLockStrategy = new GenericFileRenameExclusiveReadLockStrategy<File>(); 094 Long timeout = (Long) params.get("readLockTimeout"); 095 if (timeout != null) { 096 readLockStrategy.setTimeout(timeout); 097 } 098 return readLockStrategy; 099 } else if ("markerFile".equals(readLock)) { 100 return new MarkerFileExclusiveReadLockStrategy(); 101 } 102 } 103 104 return null; 105 } 106 }