| /* |
| * 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.sling.distribution.servlet; |
| |
| import javax.servlet.ServletException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.List; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.felix.scr.annotations.sling.SlingServlet; |
| import org.apache.http.entity.ContentType; |
| import org.apache.sling.api.SlingHttpServletRequest; |
| import org.apache.sling.api.SlingHttpServletResponse; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.api.servlets.SlingAllMethodsServlet; |
| import org.apache.sling.distribution.DistributionRequest; |
| import org.apache.sling.distribution.DistributionException; |
| import org.apache.sling.distribution.serialization.DistributionPackage; |
| import org.apache.sling.distribution.packaging.DistributionPackageExporter; |
| import org.apache.sling.distribution.resources.DistributionResourceTypes; |
| import org.apache.sling.distribution.transport.impl.HttpTransportUtils; |
| import org.apache.sling.distribution.util.RequestUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Servlet to handle fetching of distribution content. |
| */ |
| @SlingServlet(resourceTypes = DistributionResourceTypes.EXPORTER_RESOURCE_TYPE, methods = "POST") |
| public class DistributionPackageExporterServlet extends SlingAllMethodsServlet { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| |
| @Override |
| protected void doPost(SlingHttpServletRequest request, SlingHttpServletResponse response) |
| throws ServletException, IOException { |
| |
| String operation = request.getParameter("operation"); |
| |
| try { |
| if ("delete".equals(operation)) { |
| |
| deletePackage(request, response); |
| |
| } else if ("fetch".equals(operation)) { |
| |
| exportOnePackage(request, response, false); |
| |
| } else { |
| |
| exportOnePackage(request, response, true); |
| } |
| |
| } catch (Throwable t) { |
| response.setStatus(503); |
| log.error("error while exporting package", t); |
| } |
| } |
| |
| protected void exportOnePackage(SlingHttpServletRequest request, SlingHttpServletResponse response, boolean delete) |
| throws ServletException, IOException { |
| |
| DistributionPackageExporter distributionPackageExporter = request |
| .getResource() |
| .adaptTo(DistributionPackageExporter.class); |
| |
| final long start = System.currentTimeMillis(); |
| |
| response.setContentType(ContentType.APPLICATION_OCTET_STREAM.toString()); |
| |
| DistributionRequest distributionRequest = RequestUtils.fromServletRequest(request); |
| ResourceResolver resourceResolver = request.getResourceResolver(); |
| |
| int consumed = 0; |
| int fetched = 0; |
| try { |
| // get all items |
| List<DistributionPackage> distributionPackages = distributionPackageExporter.exportPackages(resourceResolver, distributionRequest); |
| fetched = distributionPackages.size(); |
| |
| if (distributionPackages.size() > 0) { |
| log.info("{} package(s) available for fetching", distributionPackages.size()); |
| |
| for (DistributionPackage distributionPackage : distributionPackages) { |
| if (distributionPackage != null) { |
| consumed++; |
| InputStream inputStream = null; |
| int bytesCopied = -1; |
| try { |
| response.addHeader(HttpTransportUtils.HEADER_DISTRIBUTION_ORIGINAL_ID, distributionPackage.getId()); |
| |
| inputStream = distributionPackage.createInputStream(); |
| |
| bytesCopied = IOUtils.copy(inputStream, response.getOutputStream()); |
| } finally { |
| IOUtils.closeQuietly(inputStream); |
| } |
| |
| String packageId = distributionPackage.getId(); |
| if (delete) { |
| // delete the package permanently |
| distributionPackage.delete(); |
| } |
| |
| |
| // everything ok |
| response.setStatus(200); |
| log.info("exported package {} was sent (and deleted={}), bytes written {}", new Object[]{packageId, delete, bytesCopied}); |
| } else { |
| log.warn("fetched a null package"); |
| } |
| } |
| |
| long end = System.currentTimeMillis(); |
| log.info("Processed distribution export request in {} ms: : consumed {} of {}", new Object[]{end - start, consumed, fetched}); |
| } else { |
| response.setStatus(204); |
| log.debug("nothing to fetch"); |
| } |
| |
| } catch (Throwable e) { |
| response.setStatus(503); |
| log.error("error while exporting package", e); |
| } |
| } |
| |
| void deletePackage(final SlingHttpServletRequest request, final SlingHttpServletResponse response) throws DistributionException { |
| DistributionPackageExporter distributionPackageExporter = request |
| .getResource() |
| .adaptTo(DistributionPackageExporter.class); |
| |
| ResourceResolver resourceResolver = request.getResourceResolver(); |
| |
| |
| String id = request.getParameter("id"); |
| |
| DistributionPackage distributionPackage = distributionPackageExporter.getPackage(resourceResolver, id); |
| |
| if (distributionPackage != null) { |
| distributionPackage.delete(); |
| log.info("exported package {} was deleted", distributionPackage.getId()); |
| |
| response.setStatus(200); |
| } else { |
| response.setStatus(204); |
| log.debug("nothing to delete {}", id); |
| } |
| |
| |
| |
| } |
| |
| } |