| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * https://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| package org.apache.ivy.plugins.repository.url; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.ivy.plugins.repository.AbstractRepository; |
| import org.apache.ivy.plugins.repository.BasicResource; |
| import org.apache.ivy.plugins.repository.Repository; |
| import org.apache.ivy.plugins.repository.Resource; |
| import org.apache.ivy.util.Message; |
| |
| public class ChainedRepository extends AbstractRepository { |
| |
| private List<Repository> repositories; |
| |
| public void setRepositories(List<Repository> repositories) { |
| this.repositories = repositories; |
| } |
| |
| public Resource getResource(String source) throws IOException { |
| for (Repository repository : repositories) { |
| logTry(repository); |
| try { |
| Resource r = repository.getResource(source); |
| if (r != null && r.exists()) { |
| logSuccess(repository); |
| return r; |
| } |
| } catch (Exception e) { |
| logFailed(repository, e); |
| } |
| } |
| // resource that basically doesn't exists |
| return new BasicResource(source, false, 0, 0, true); |
| } |
| |
| public void get(String source, File destination) throws IOException { |
| for (Repository repository : repositories) { |
| logTry(repository); |
| boolean ok = false; |
| try { |
| repository.get(source, destination); |
| ok = true; |
| } catch (Exception e) { |
| logFailed(repository, e); |
| } |
| if (ok) { |
| logSuccess(repository); |
| return; |
| } |
| } |
| throw newIOEFail("copy " + source + " into " + destination); |
| } |
| |
| public List<String> list(String parent) throws IOException { |
| for (Repository repository : repositories) { |
| logTry(repository); |
| try { |
| List<String> list = repository.list(parent); |
| if (list != null) { |
| logSuccess(repository); |
| return list; |
| } |
| } catch (Exception e) { |
| logFailed(repository, e); |
| } |
| } |
| throw newIOEFail("list contents in " + parent); |
| } |
| |
| private void logTry(Repository repository) { |
| Message.debug("Mirrored repository " + getName() + ": trying " + repository.getName()); |
| } |
| |
| private void logFailed(Repository repository, Exception e) { |
| Message.warn("Mirrored repository " + getName() + ": " + repository.getName() |
| + " is not available", e); |
| Message.warn("Trying the next one in the mirror list..."); |
| } |
| |
| private void logSuccess(Repository repository) { |
| Message.debug("Mirrored repository " + getName() + ": success with " + repository.getName()); |
| } |
| |
| private IOException newIOEFail(String action) { |
| return new IOException("Mirrored repository " + getName() + ": fail to " + action |
| + " with every listed mirror"); |
| } |
| |
| } |