001package org.eclipse.aether.internal.transport.wagon; 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 org.apache.maven.wagon.Wagon; 023import org.codehaus.plexus.PlexusContainer; 024import org.codehaus.plexus.component.annotations.Component; 025import org.codehaus.plexus.component.annotations.Requirement; 026import org.eclipse.aether.transport.wagon.WagonProvider; 027 028/** 029 * A wagon provider backed by a Plexus container and the wagons registered with this container. 030 */ 031@Component( role = WagonProvider.class, hint = "plexus" ) 032public class PlexusWagonProvider 033 implements WagonProvider 034{ 035 036 @Requirement 037 private PlexusContainer container; 038 039 /** 040 * Creates an uninitialized wagon provider. 041 * 042 * @noreference This constructor only supports the Plexus IoC container and should not be called directly by 043 * clients. 044 */ 045 public PlexusWagonProvider() 046 { 047 // enables no-arg constructor 048 } 049 050 /** 051 * Creates a wagon provider using the specified Plexus container. 052 * 053 * @param container The Plexus container instance to use, must not be {@code null}. 054 */ 055 public PlexusWagonProvider( PlexusContainer container ) 056 { 057 if ( container == null ) 058 { 059 throw new IllegalArgumentException( "plexus container has not been specified" ); 060 } 061 this.container = container; 062 } 063 064 public Wagon lookup( String roleHint ) 065 throws Exception 066 { 067 return container.lookup( Wagon.class, roleHint ); 068 } 069 070 public void release( Wagon wagon ) 071 { 072 try 073 { 074 if ( wagon != null ) 075 { 076 container.release( wagon ); 077 } 078 } 079 catch ( Exception e ) 080 { 081 // too bad 082 } 083 } 084 085}