/*
 * 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.
 */
package org.apache.maven.index.updater;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * ResourceFetcher that keeps track of all requested remote resources.
 *
 * @author igor
 */
public class TrackingFetcher extends DefaultIndexUpdater.FileFetcher {

    private final ArrayList<String> resources = new ArrayList<>();

    public TrackingFetcher(File basedir) {
        super(basedir);
    }

    @Override
    public InputStream retrieve(String name) throws IOException, FileNotFoundException {
        resources.add(name);
        return super.retrieve(name);
    }

    @Override
    public void retrieve(String name, File targetFile) throws IOException, FileNotFoundException {
        resources.add(name);
        super.retrieve(name, targetFile);
    }

    public List<String> getRetrievedResources() {
        return resources;
    }
}
