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 }