001package org.eclipse.aether.internal.impl; 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 022import java.util.Calendar; 023 024import javax.inject.Inject; 025import javax.inject.Named; 026 027import org.eclipse.aether.RepositorySystemSession; 028import org.eclipse.aether.impl.UpdatePolicyAnalyzer; 029import org.eclipse.aether.repository.RepositoryPolicy; 030import org.eclipse.aether.spi.locator.Service; 031import org.eclipse.aether.spi.locator.ServiceLocator; 032import org.eclipse.aether.spi.log.Logger; 033import org.eclipse.aether.spi.log.LoggerFactory; 034import org.eclipse.aether.spi.log.NullLoggerFactory; 035 036/** 037 */ 038@Named 039public class DefaultUpdatePolicyAnalyzer 040 implements UpdatePolicyAnalyzer, Service 041{ 042 043 private Logger logger = NullLoggerFactory.LOGGER; 044 045 public DefaultUpdatePolicyAnalyzer() 046 { 047 // enables default constructor 048 } 049 050 @Inject 051 DefaultUpdatePolicyAnalyzer( LoggerFactory loggerFactory ) 052 { 053 setLoggerFactory( loggerFactory ); 054 } 055 056 public void initService( ServiceLocator locator ) 057 { 058 setLoggerFactory( locator.getService( LoggerFactory.class ) ); 059 } 060 061 public DefaultUpdatePolicyAnalyzer setLoggerFactory( LoggerFactory loggerFactory ) 062 { 063 this.logger = NullLoggerFactory.getSafeLogger( loggerFactory, getClass() ); 064 return this; 065 } 066 067 public String getEffectiveUpdatePolicy( RepositorySystemSession session, String policy1, String policy2 ) 068 { 069 return ordinalOfUpdatePolicy( policy1 ) < ordinalOfUpdatePolicy( policy2 ) ? policy1 : policy2; 070 } 071 072 private int ordinalOfUpdatePolicy( String policy ) 073 { 074 if ( RepositoryPolicy.UPDATE_POLICY_DAILY.equals( policy ) ) 075 { 076 return 1440; 077 } 078 else if ( RepositoryPolicy.UPDATE_POLICY_ALWAYS.equals( policy ) ) 079 { 080 return 0; 081 } 082 else if ( policy != null && policy.startsWith( RepositoryPolicy.UPDATE_POLICY_INTERVAL ) ) 083 { 084 return getMinutes( policy ); 085 } 086 else 087 { 088 // assume "never" 089 return Integer.MAX_VALUE; 090 } 091 } 092 093 public boolean isUpdatedRequired( RepositorySystemSession session, long lastModified, String policy ) 094 { 095 boolean checkForUpdates; 096 097 if ( policy == null ) 098 { 099 policy = ""; 100 } 101 102 if ( RepositoryPolicy.UPDATE_POLICY_ALWAYS.equals( policy ) ) 103 { 104 checkForUpdates = true; 105 } 106 else if ( RepositoryPolicy.UPDATE_POLICY_DAILY.equals( policy ) ) 107 { 108 Calendar cal = Calendar.getInstance(); 109 cal.set( Calendar.HOUR_OF_DAY, 0 ); 110 cal.set( Calendar.MINUTE, 0 ); 111 cal.set( Calendar.SECOND, 0 ); 112 cal.set( Calendar.MILLISECOND, 0 ); 113 114 checkForUpdates = cal.getTimeInMillis() > lastModified; 115 } 116 else if ( policy.startsWith( RepositoryPolicy.UPDATE_POLICY_INTERVAL ) ) 117 { 118 int minutes = getMinutes( policy ); 119 120 Calendar cal = Calendar.getInstance(); 121 cal.add( Calendar.MINUTE, -minutes ); 122 123 checkForUpdates = cal.getTimeInMillis() > lastModified; 124 } 125 else 126 { 127 // assume "never" 128 checkForUpdates = false; 129 130 if ( !RepositoryPolicy.UPDATE_POLICY_NEVER.equals( policy ) ) 131 { 132 logger.warn( "Unknown repository update policy '" + policy + "', assuming '" 133 + RepositoryPolicy.UPDATE_POLICY_NEVER + "'" ); 134 } 135 } 136 137 return checkForUpdates; 138 } 139 140 private int getMinutes( String policy ) 141 { 142 int minutes; 143 try 144 { 145 String s = policy.substring( RepositoryPolicy.UPDATE_POLICY_INTERVAL.length() + 1 ); 146 minutes = Integer.valueOf( s ); 147 } 148 catch ( RuntimeException e ) 149 { 150 minutes = 24 * 60; 151 152 logger.warn( "Non-parseable repository update policy '" + policy + "', assuming '" 153 + RepositoryPolicy.UPDATE_POLICY_INTERVAL + ":1440'" ); 154 } 155 return minutes; 156 } 157 158}