org.codehaus.mojo.wagon.shared.DefaultWagonDownload Maven / Gradle / Ivy

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/**
 * Copyright 2008-2012 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.codehaus.mojo.wagon.shared;

/*
 * 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.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.FileUtils;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.wagon.TransferFailedException;
import org.apache.maven.wagon.Wagon;
import org.apache.maven.wagon.WagonException;
import org.codehaus.plexus.util.StringUtils;

/**
 * @plexus.component role="org.codehaus.mojo.wagon.shared.WagonDownload" role-hint="default"
 */

public class DefaultWagonDownload implements WagonDownload {

    @Override
    public List getFileList(Wagon wagon, WagonFileSet fileSet, Log logger) throws WagonException {
        logger.info("Scanning repository - " + wagon.getRepository().getUrl());

        WagonDirectoryScanner dirScan = new WagonDirectoryScanner();
        dirScan.setLogger(logger);
        dirScan.setWagon(wagon);
        dirScan.setExcludes(fileSet.getExcludes());
        dirScan.setIncludes(fileSet.getIncludes());
        dirScan.setCaseSensitive(fileSet.isCaseSensitive());
        dirScan.setDirectory(fileSet.getDirectory());
        if (fileSet.isUseDefaultExcludes()) {
            dirScan.addDefaultExcludes();
        }

        long start = System.currentTimeMillis();
        dirScan.scan();
        long elapsed = System.currentTimeMillis() - start;
        logger.info("Scan time: " + (elapsed / 1000) + "s");
        logger.info("Files located: " + dirScan.getFilesIncluded().size());

        return dirScan.getFilesIncluded();
    }

    @Override
    public void download(Wagon wagon, WagonFileSet remoteFileSet, Log logger, boolean skipExisting)
            throws WagonException {
        List fileList = getFileList(wagon, remoteFileSet, logger);

        String url = wagon.getRepository().getUrl();
        url = url.endsWith("/") ? url : url + "/";

        if (fileList.size() == 0) {
            logger.info("Nothing to download.");
            return;
        }

        int count = 0;
        long start = System.currentTimeMillis();
        List skipped = new ArrayList();
        for (String remoteFile : fileList) {
            String index = StringUtils.leftPad((++count) + "", 5, " ");

            File destination = new File(remoteFileSet.getDownloadDirectory() + "/" + remoteFile);

            if (skipExisting && destination.exists()) {
                String msg = index + " Skipping " + url + remoteFile + " - " + destination + " already exists";
                logger.debug(msg);
                skipped.add(msg);
                continue;
            }

            if (!StringUtils.isBlank(remoteFileSet.getDirectory())) {
                remoteFile = remoteFileSet.getDirectory() + "/" + remoteFile;
            }

            logger.info(index + " Downloading " + url + remoteFile + " to " + destination);
            try {
                FileUtils.touch(destination);
            } catch (IOException e) {
                throw new TransferFailedException("Unexpected IO error", e);
            }

            wagon.get(remoteFile, destination);
        }
        long elapsed = System.currentTimeMillis() - start;
        if (skipped.size() > 0) {
            logger.info("Skipped " + skipped.size() + " resources that already exist on the local file system");
        }
        logger.info("Download time: " + (elapsed / 1000) + "s");
    }

    /**
     *
     * @param wagon
     *            - a Wagon instance
     * @param resource
     *            - Remote resource to check
     * @throws WagonException
     */
    @Override
    public boolean exists(Wagon wagon, String resource) throws WagonException {
        return wagon.resourceExists(resource);
    }

}