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 org.apache.camel.Exchange; 020 import org.apache.camel.component.file.GenericFile; 021 import org.apache.camel.component.file.GenericFileEndpoint; 022 import org.apache.camel.component.file.GenericFileOperationFailedException; 023 import org.apache.camel.component.file.GenericFileOperations; 024 025 public class GenericFileDeleteProcessStrategy<T> extends GenericFileProcessStrategySupport<T> { 026 027 @Override 028 public void commit(GenericFileOperations<T> operations, GenericFileEndpoint<T> endpoint, Exchange exchange, GenericFile<T> file) throws Exception { 029 // must invoke super 030 super.commit(operations, endpoint, exchange, file); 031 032 int retries = 3; 033 boolean deleted = false; 034 035 while (retries > 0 && !deleted) { 036 retries--; 037 038 if (operations.deleteFile(file.getAbsoluteFilePath())) { 039 // file is deleted 040 deleted = true; 041 break; 042 } 043 044 // some OS can report false when deleting but the file is still deleted 045 // use exists to check instead 046 boolean exits = operations.existsFile(file.getAbsoluteFilePath()); 047 if (!exits) { 048 deleted = true; 049 } else { 050 if (log.isTraceEnabled()) { 051 log.trace("File was not deleted at this attempt will try again in 1 sec.: " + file); 052 } 053 // sleep a bit and try again 054 Thread.sleep(1000); 055 } 056 } 057 058 if (!deleted) { 059 throw new GenericFileOperationFailedException("Cannot delete file: " + file); 060 } 061 } 062 063 }