/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.component.file.strategy;
import java.util.Map;
import org.apache.camel.CamelContext;
import org.apache.camel.Expression;
import org.apache.camel.component.file.GenericFileExclusiveReadLockStrategy;
import org.apache.camel.component.file.GenericFileProcessStrategy;
import org.apache.camel.util.ObjectHelper;
public final class GenericFileProcessStrategyFactory {
private GenericFileProcessStrategyFactory() {
}
@SuppressWarnings("unchecked")
public static GenericFileProcessStrategy createGenericFileProcessStrategy(CamelContext context, Map<String, Object> params) {
// We assume a value is present only if its value not null for String and 'true' for boolean
Expression moveExpression = (Expression) params.get("move");
Expression moveFailedExpression = (Expression) params.get("moveFailed");
Expression preMoveExpression = (Expression) params.get("preMove");
boolean isNoop = params.get("noop") != null;
boolean isDelete = params.get("delete") != null;
boolean isMove = moveExpression != null || preMoveExpression != null || moveFailedExpression != null;
if (isNoop) {
GenericFileNoOpProcessStrategy strategy = new GenericFileNoOpProcessStrategy();
strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params));
return strategy;
} else if (isDelete) {
GenericFileDeleteProcessStrategy strategy = new GenericFileDeleteProcessStrategy();
strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params));
return strategy;
} else if (isMove) {
GenericFileRenameProcessStrategy strategy = new GenericFileRenameProcessStrategy();
strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params));
if (moveExpression != null) {
GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer();
renamer.setExpression(moveExpression);
strategy.setCommitRenamer(renamer);
}
if (moveFailedExpression != null) {
GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer();
renamer.setExpression(moveFailedExpression);
strategy.setFailureRenamer(renamer);
}
if (preMoveExpression != null) {
GenericFileExpressionRenamer renamer = new GenericFileExpressionRenamer();
renamer.setExpression(preMoveExpression);
strategy.setBeginRenamer(renamer);
}
return strategy;
} else {
// default strategy will do nothing
GenericFileNoOpProcessStrategy strategy = new GenericFileNoOpProcessStrategy();
strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params));
return strategy;
}
}
private static GenericFileExclusiveReadLockStrategy getExclusiveReadLockStrategy(Map<String, Object> params) {
GenericFileExclusiveReadLockStrategy strategy = (GenericFileExclusiveReadLockStrategy) params.get("exclusiveReadLockStrategy");
if (strategy != null) {
return strategy;
}
// no explicit stategy set then fallback to readLock option
String readLock = (String) params.get("readLock");
if (ObjectHelper.isNotEmpty(readLock)) {
if ("none".equals(readLock) || "false".equals(readLock)) {
return null;
} else if ("rename".equals(readLock)) {
GenericFileRenameExclusiveReadLockStrategy readLockStrategy = new GenericFileRenameExclusiveReadLockStrategy();
Long timeout = (Long) params.get("readLockTimeout");
if (timeout != null) {
readLockStrategy.setTimeout(timeout);
}
return readLockStrategy;
}
}
return null;
}
}