| // |
| // 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 com.cloud.agent.direct.download; |
| |
| import com.cloud.utils.UriUtils; |
| import com.cloud.utils.exception.CloudRuntimeException; |
| import org.apache.commons.collections.CollectionUtils; |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.log4j.Logger; |
| |
| import java.io.File; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Random; |
| |
| public class MetalinkDirectTemplateDownloader extends HttpDirectTemplateDownloader { |
| |
| private String metalinkUrl; |
| private List<String> metalinkUrls; |
| private List<String> metalinkChecksums; |
| private Random random = new Random(); |
| private static final Logger s_logger = Logger.getLogger(MetalinkDirectTemplateDownloader.class.getName()); |
| |
| public MetalinkDirectTemplateDownloader(String url, String destPoolPath, Long templateId, String checksum, Map<String, String> headers) { |
| super(url, templateId, destPoolPath, checksum, headers); |
| metalinkUrl = url; |
| metalinkUrls = UriUtils.getMetalinkUrls(metalinkUrl); |
| metalinkChecksums = UriUtils.getMetalinkChecksums(metalinkUrl); |
| if (CollectionUtils.isEmpty(metalinkUrls)) { |
| throw new CloudRuntimeException("No urls found on metalink file: " + metalinkUrl + ". Not possible to download template " + templateId); |
| } |
| setUrl(metalinkUrls.get(0)); |
| s_logger.info("Metalink downloader created, metalink url: " + metalinkUrl + " parsed - " + |
| metalinkUrls.size() + " urls and " + |
| (CollectionUtils.isNotEmpty(metalinkChecksums) ? metalinkChecksums.size() : "0") + " checksums found"); |
| } |
| |
| @Override |
| public boolean downloadTemplate() { |
| if (StringUtils.isBlank(getUrl())) { |
| throw new CloudRuntimeException("Download url has not been set, aborting"); |
| } |
| String downloadDir = getDirectDownloadTempPath(getTemplateId()); |
| boolean downloaded = false; |
| int i = 0; |
| do { |
| if (!isRedownload()) { |
| setUrl(metalinkUrls.get(i)); |
| } |
| s_logger.info("Trying to download template from url: " + getUrl()); |
| try { |
| File f = new File(getDestPoolPath() + File.separator + downloadDir + File.separator + getFileNameFromUrl()); |
| if (f.exists()) { |
| f.delete(); |
| f.createNewFile(); |
| } |
| setDownloadedFilePath(f.getAbsolutePath()); |
| request = createRequest(getUrl(), reqHeaders); |
| downloaded = super.downloadTemplate(); |
| if (downloaded) { |
| s_logger.info("Successfully downloaded template from url: " + getUrl()); |
| } |
| |
| } catch (Exception e) { |
| s_logger.error("Error downloading template: " + getTemplateId() + " from " + getUrl() + ": " + e.getMessage()); |
| } |
| i++; |
| } |
| while (!downloaded && !isRedownload() && i < metalinkUrls.size()); |
| return downloaded; |
| } |
| |
| @Override |
| public boolean validateChecksum() { |
| if (StringUtils.isBlank(getChecksum()) && CollectionUtils.isNotEmpty(metalinkChecksums)) { |
| String chk = metalinkChecksums.get(random.nextInt(metalinkChecksums.size())); |
| setChecksum(chk); |
| s_logger.info("Checksum not provided but " + metalinkChecksums.size() + " found on metalink file, performing checksum using one of them: " + chk); |
| } |
| return super.validateChecksum(); |
| } |
| } |