/**
* 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.remote.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.component.file.strategy.GenericFileDeleteProcessStrategy;
import org.apache.camel.component.file.strategy.GenericFileExpressionRenamer;
import org.apache.camel.component.file.strategy.GenericFileNoOpProcessStrategy;
import org.apache.camel.component.file.strategy.GenericFileRenameExclusiveReadLockStrategy;
import org.apache.camel.component.file.strategy.GenericFileRenameProcessStrategy;
import org.apache.camel.util.ObjectHelper;
public final class FtpProcessStrategyFactory {
private FtpProcessStrategyFactory() {
}
@SuppressWarnings("unchecked")
public static <FTPFile> GenericFileProcessStrategy<FTPFile> 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 (isDelete) {
GenericFileDeleteProcessStrategy<FTPFile> strategy = new GenericFileDeleteProcessStrategy<FTPFile>();
strategy.setExclusiveReadLockStrategy((GenericFileExclusiveReadLockStrategy<FTPFile>) getExclusiveReadLockStrategy(params));
if (preMoveExpression != null) {
GenericFileExpressionRenamer<FTPFile> renamer = new GenericFileExpressionRenamer<FTPFile>();
renamer.setExpression(preMoveExpression);
strategy.setBeginRenamer(renamer);
}
if (moveFailedExpression != null) {
GenericFileExpressionRenamer<FTPFile> renamer = new GenericFileExpressionRenamer<FTPFile>();
renamer.setExpression(moveFailedExpression);
strategy.setFailureRenamer(renamer);
}
return strategy;
} else if (isMove || isNoop) {
GenericFileRenameProcessStrategy<FTPFile> strategy = new GenericFileRenameProcessStrategy<FTPFile>();
strategy.setExclusiveReadLockStrategy((GenericFileExclusiveReadLockStrategy<FTPFile>) getExclusiveReadLockStrategy(params));
if (!isNoop && moveExpression != null) {
// move on commit is only possible if not noop
GenericFileExpressionRenamer<FTPFile> renamer = new GenericFileExpressionRenamer<FTPFile>();
renamer.setExpression(moveExpression);
strategy.setCommitRenamer(renamer);
}
// both move and noop supports pre move
if (moveFailedExpression != null) {
GenericFileExpressionRenamer<FTPFile> renamer = new GenericFileExpressionRenamer<FTPFile>();
renamer.setExpression(moveFailedExpression);
strategy.setFailureRenamer(renamer);
}
// both move and noop supports pre move
if (preMoveExpression != null) {
GenericFileExpressionRenamer<FTPFile> renamer = new GenericFileExpressionRenamer<FTPFile>();
renamer.setExpression(preMoveExpression);
strategy.setBeginRenamer(renamer);
}
return strategy;
} else {
// default strategy will do nothing
GenericFileNoOpProcessStrategy<FTPFile> strategy = new GenericFileNoOpProcessStrategy<FTPFile>();
strategy.setExclusiveReadLockStrategy((GenericFileExclusiveReadLockStrategy<FTPFile>) getExclusiveReadLockStrategy(params));
return strategy;
}
}
@SuppressWarnings("unchecked")
private static <FTPFile> GenericFileExclusiveReadLockStrategy<FTPFile> getExclusiveReadLockStrategy(Map<String, Object> params) {
GenericFileExclusiveReadLockStrategy<FTPFile> strategy = (GenericFileExclusiveReadLockStrategy<FTPFile>) params.get("exclusiveReadLockStrategy");
if (strategy != null) {
return strategy;
}
// no explicit strategy 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<FTPFile> readLockStrategy = new GenericFileRenameExclusiveReadLockStrategy<FTPFile>();
Long timeout = (Long) params.get("readLockTimeout");
if (timeout != null) {
readLockStrategy.setTimeout(timeout);
}
return readLockStrategy;
} else if ("changed".equals(readLock)) {
GenericFileExclusiveReadLockStrategy readLockStrategy = new FtpChangedExclusiveReadLockStrategy();
Long timeout = (Long) params.get("readLockTimeout");
if (timeout != null) {
readLockStrategy.setTimeout(timeout);
}
Long checkInterval = (Long) params.get("readLockCheckInterval");
if (checkInterval != null) {
readLockStrategy.setCheckInterval(checkInterval);
}
return readLockStrategy;
}
}
return null;
}
}