| /** |
| * 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.io.File; |
| 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.spi.Language; |
| import org.apache.camel.util.ObjectHelper; |
| |
| public final class FileProcessStrategyFactory { |
| |
| private FileProcessStrategyFactory() { |
| } |
| |
| public static GenericFileProcessStrategy<File> 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<File> strategy = new GenericFileDeleteProcessStrategy<File>(); |
| strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); |
| if (preMoveExpression != null) { |
| GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); |
| renamer.setExpression(preMoveExpression); |
| strategy.setBeginRenamer(renamer); |
| } |
| if (moveFailedExpression != null) { |
| GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); |
| renamer.setExpression(moveFailedExpression); |
| strategy.setFailureRenamer(renamer); |
| } |
| return strategy; |
| } else if (isMove || isNoop) { |
| GenericFileRenameProcessStrategy<File> strategy = new GenericFileRenameProcessStrategy<File>(); |
| strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); |
| if (!isNoop) { |
| // move on commit is only possible if not noop |
| if (moveExpression != null) { |
| GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); |
| renamer.setExpression(moveExpression); |
| strategy.setCommitRenamer(renamer); |
| } else { |
| strategy.setCommitRenamer(getDefaultCommitRenamer(context)); |
| } |
| } |
| // both move and noop supports pre move |
| if (preMoveExpression != null) { |
| GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); |
| renamer.setExpression(preMoveExpression); |
| strategy.setBeginRenamer(renamer); |
| } |
| // both move and noop supports move failed |
| if (moveFailedExpression != null) { |
| GenericFileExpressionRenamer<File> renamer = new GenericFileExpressionRenamer<File>(); |
| renamer.setExpression(moveFailedExpression); |
| strategy.setFailureRenamer(renamer); |
| } |
| return strategy; |
| } else { |
| // default strategy will move files in a .camel/ subfolder where the file was consumed |
| GenericFileRenameProcessStrategy<File> strategy = new GenericFileRenameProcessStrategy<File>(); |
| strategy.setExclusiveReadLockStrategy(getExclusiveReadLockStrategy(params)); |
| strategy.setCommitRenamer(getDefaultCommitRenamer(context)); |
| return strategy; |
| } |
| } |
| |
| private static GenericFileExpressionRenamer<File> getDefaultCommitRenamer(CamelContext context) { |
| // use context to lookup language to let it be loose coupled |
| Language language = context.resolveLanguage("file"); |
| Expression expression = language.createExpression("${file:parent}/.camel/${file:onlyname}"); |
| return new GenericFileExpressionRenamer<File>(expression); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private static GenericFileExclusiveReadLockStrategy<File> getExclusiveReadLockStrategy(Map<String, Object> params) { |
| GenericFileExclusiveReadLockStrategy strategy = (GenericFileExclusiveReadLockStrategy) 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 ("fileLock".equals(readLock)) { |
| GenericFileExclusiveReadLockStrategy<File> readLockStrategy = new FileLockExclusiveReadLockStrategy(); |
| 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; |
| } else if ("rename".equals(readLock)) { |
| GenericFileExclusiveReadLockStrategy<File> readLockStrategy = new GenericFileRenameExclusiveReadLockStrategy<File>(); |
| 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; |
| } else if ("changed".equals(readLock)) { |
| GenericFileExclusiveReadLockStrategy readLockStrategy = new FileChangedExclusiveReadLockStrategy(); |
| 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; |
| } else if ("markerFile".equals(readLock)) { |
| return new MarkerFileExclusiveReadLockStrategy(); |
| } |
| } |
| |
| return null; |
| } |
| } |