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.slf4j.Logger; 024 import org.slf4j.LoggerFactory; 025 import org.springframework.stereotype.Service; 026 027 import java.io.File; 028 import java.util.ArrayList; 029 import java.util.List; 030 import java.util.Map; 031 import java.util.Properties; 032 033 /** 034 * PropagateErrorsPolicy - a policy applied on error to determine how to treat the error. 035 */ 036 @Service( "downloadErrorPolicy#propagate-errors" ) 037 public class PropagateErrorsDownloadPolicy 038 implements DownloadErrorPolicy 039 { 040 private Logger log = LoggerFactory.getLogger( PropagateErrorsDownloadPolicy.class ); 041 042 /** 043 * Signifies any error should stop searching for other proxies. 044 */ 045 public static final String STOP = "stop"; 046 047 /** 048 * Propagate errors at the end after all are gathered, if there was no successful download from other proxies. 049 */ 050 public static final String QUEUE = "queue error"; 051 052 /** 053 * Ignore errors and treat as if it were not found. 054 */ 055 public static final String IGNORE = "ignore"; 056 057 private List<String> options = new ArrayList<String>( 3 ); 058 059 public PropagateErrorsDownloadPolicy() 060 { 061 options.add( STOP ); 062 options.add( QUEUE ); 063 options.add( IGNORE ); 064 } 065 066 public boolean applyPolicy( String policySetting, Properties request, File localFile, Exception exception, 067 Map<String, Exception> previousExceptions ) 068 throws PolicyConfigurationException 069 { 070 if ( !options.contains( policySetting ) ) 071 { 072 // Not a valid code. 073 throw new PolicyConfigurationException( "Unknown error policy setting [" + policySetting + 074 "], valid settings are [" + StringUtils.join( 075 options.iterator(), "," ) + "]" ); 076 } 077 078 if ( IGNORE.equals( policySetting ) ) 079 { 080 // Ignore. 081 log.debug( "Error policy set to IGNORE." ); 082 return false; 083 } 084 085 String repositoryId = request.getProperty( "remoteRepositoryId" ); 086 if ( STOP.equals( policySetting ) ) 087 { 088 return true; 089 } 090 091 if ( QUEUE.equals( policySetting ) ) 092 { 093 previousExceptions.put( repositoryId, exception ); 094 return true; 095 } 096 097 throw new PolicyConfigurationException( 098 "Unable to process checksum policy of [" + policySetting + "], please file a bug report." ); 099 } 100 101 public String getDefaultOption() 102 { 103 return QUEUE; 104 } 105 106 public String getId() 107 { 108 return "propagate-errors"; 109 } 110 111 public String getName() 112 { 113 return "On remote error"; 114 } 115 116 public List<String> getOptions() 117 { 118 return options; 119 } 120 }