001 package org.apache.archiva.policies; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022 import org.apache.commons.lang.StringUtils; 023 import org.springframework.stereotype.Service; 024 025 import java.io.File; 026 import java.util.ArrayList; 027 import java.util.List; 028 import java.util.Map; 029 import java.util.Properties; 030 031 /** 032 * PropagateErrorsPolicy - a policy applied on error to determine how to treat the error. 033 */ 034 @Service( "downloadErrorPolicy#propagate-errors-on-update" ) 035 public class PropagateErrorsOnUpdateDownloadPolicy 036 implements DownloadErrorPolicy 037 { 038 /** 039 * Signifies any error should cause a failure whether the artifact is already present or not. 040 */ 041 public static final String ALWAYS = "always"; 042 043 /** 044 * Signifies any error should cause a failure only if the artifact is not already present. 045 */ 046 public static final String NOT_PRESENT = "artifact not already present"; 047 048 private List<String> options = new ArrayList<String>( 2 ); 049 050 public PropagateErrorsOnUpdateDownloadPolicy() 051 { 052 options.add( ALWAYS ); 053 options.add( NOT_PRESENT ); 054 } 055 056 public boolean applyPolicy( String policySetting, Properties request, File localFile, Exception exception, 057 Map<String, Exception> previousExceptions ) 058 throws PolicyConfigurationException 059 { 060 if ( !options.contains( policySetting ) ) 061 { 062 // Not a valid code. 063 throw new PolicyConfigurationException( 064 "Unknown error policy setting [" + policySetting + "], valid settings are [" + StringUtils.join( 065 options.iterator(), "," ) + "]" ); 066 } 067 068 if ( ALWAYS.equals( policySetting ) ) 069 { 070 // throw ther exception regardless 071 return true; 072 } 073 074 if ( NOT_PRESENT.equals( policySetting ) ) 075 { 076 // cancel the exception if the file exists 077 return !localFile.exists(); 078 } 079 080 throw new PolicyConfigurationException( 081 "Unable to process checksum policy of [" + policySetting + "], please file a bug report." ); 082 } 083 084 public String getDefaultOption() 085 { 086 return NOT_PRESENT; 087 } 088 089 public String getId() 090 { 091 return "propagate-errors-on-update"; 092 } 093 094 public String getName() 095 { 096 return "Return error when"; 097 } 098 099 public List<String> getOptions() 100 { 101 return options; 102 } 103 }