| package org.apache.maven.index.reader; |
| |
| /* |
| * 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 |
| * |
| * http://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. |
| */ |
| |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.HttpURLConnection; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.net.URL; |
| |
| /** |
| * A trivial HTTP {@link ResourceHandler} that uses {@link URL} to fetch remote content. This implementation does not |
| * handle any advanced cases, like redirects, authentication, etc. |
| */ |
| public class HttpResourceHandler |
| implements ResourceHandler |
| { |
| private final URI root; |
| |
| public HttpResourceHandler(final URL root) throws URISyntaxException { |
| if (root == null) { |
| throw new NullPointerException("root URL null"); |
| } |
| this.root = root.toURI(); |
| } |
| |
| public Resource locate(final String name) throws IOException { |
| return new HttpResource(name); |
| } |
| |
| private class HttpResource |
| implements Resource |
| { |
| private final String name; |
| |
| private HttpResource(final String name) { |
| this.name = name; |
| } |
| |
| public InputStream read() throws IOException { |
| URL target = root.resolve(name).toURL(); |
| HttpURLConnection conn = (HttpURLConnection) target.openConnection(); |
| conn.setRequestMethod("GET"); |
| conn.setRequestProperty("User-Agent", "ASF Maven-Indexer-Reader/1.0"); |
| return new BufferedInputStream(conn.getInputStream()); |
| } |
| } |
| |
| public void close() throws IOException { |
| // nop |
| } |
| } |