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 javax.inject.Named; 023 024import org.eclipse.aether.RepositorySystemSession; 025import org.eclipse.aether.repository.RemoteRepository; 026import org.eclipse.aether.repository.RepositoryPolicy; 027import org.eclipse.aether.spi.connector.checksum.ChecksumPolicy; 028import org.eclipse.aether.spi.connector.checksum.ChecksumPolicyProvider; 029import org.eclipse.aether.transfer.TransferResource; 030 031/** 032 */ 033@Named 034public final class DefaultChecksumPolicyProvider 035 implements ChecksumPolicyProvider 036{ 037 038 private static final int ORDINAL_IGNORE = 0; 039 040 private static final int ORDINAL_WARN = 1; 041 042 private static final int ORDINAL_FAIL = 2; 043 044 public DefaultChecksumPolicyProvider() 045 { 046 // enables default constructor 047 } 048 049 public ChecksumPolicy newChecksumPolicy( RepositorySystemSession session, RemoteRepository repository, 050 TransferResource resource, String policy ) 051 { 052 if ( RepositoryPolicy.CHECKSUM_POLICY_IGNORE.equals( policy ) ) 053 { 054 return null; 055 } 056 if ( RepositoryPolicy.CHECKSUM_POLICY_FAIL.equals( policy ) ) 057 { 058 return new FailChecksumPolicy( resource ); 059 } 060 return new WarnChecksumPolicy( resource ); 061 } 062 063 public String getEffectiveChecksumPolicy( RepositorySystemSession session, String policy1, String policy2 ) 064 { 065 if ( policy1 != null && policy1.equals( policy2 ) ) 066 { 067 return policy1; 068 } 069 int ordinal1 = ordinalOfPolicy( policy1 ); 070 int ordinal2 = ordinalOfPolicy( policy2 ); 071 if ( ordinal2 < ordinal1 ) 072 { 073 return ( ordinal2 != ORDINAL_WARN ) ? policy2 : RepositoryPolicy.CHECKSUM_POLICY_WARN; 074 } 075 else 076 { 077 return ( ordinal1 != ORDINAL_WARN ) ? policy1 : RepositoryPolicy.CHECKSUM_POLICY_WARN; 078 } 079 } 080 081 private static int ordinalOfPolicy( String policy ) 082 { 083 if ( RepositoryPolicy.CHECKSUM_POLICY_FAIL.equals( policy ) ) 084 { 085 return ORDINAL_FAIL; 086 } 087 else if ( RepositoryPolicy.CHECKSUM_POLICY_IGNORE.equals( policy ) ) 088 { 089 return ORDINAL_IGNORE; 090 } 091 else 092 { 093 return ORDINAL_WARN; 094 } 095 } 096 097}