Java tutorial
/* * Copyright 2012 JBoss Inc * * Licensed 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.artificer.ui.server.servlets; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import org.apache.commons.io.IOUtils; import org.artificer.ui.server.i18n.Messages; import org.oasis_open.docs.s_ramp.ns.s_ramp_v1.BaseArtifactType; import org.artificer.atom.archive.ArtificerArchive; import org.artificer.atom.err.ArtificerAtomException; import org.artificer.common.ArtifactType; import org.artificer.ui.server.api.ArtificerApiClientAccessor; import org.artificer.ui.server.util.ExceptionUtils; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.HashMap; import java.util.List; import java.util.Map; /** * A standard servlet that artifact content is POSTed to in order to add new artifacts * to the s-ramp repository. * * @author eric.wittmann@redhat.com */ public class ArtifactUploadServlet extends AbstractUploadServlet { private static final long serialVersionUID = ArtifactUploadServlet.class.hashCode(); /** * Constructor. */ public ArtifactUploadServlet() { } /** * @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) */ @Override protected void doPost(HttpServletRequest req, HttpServletResponse response) throws ServletException, IOException { // Extract the relevant content from the POST'd form if (ServletFileUpload.isMultipartContent(req)) { Map<String, String> responseMap; FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); // Parse the request String artifactType = null; String fileName = null; InputStream artifactContent = null; try { List<FileItem> items = upload.parseRequest(req); for (FileItem item : items) { if (item.isFormField()) { if (item.getFieldName().equals("artifactType")) { artifactType = item.getString(); } } else { fileName = item.getName(); if (fileName != null) fileName = FilenameUtils.getName(fileName); artifactContent = item.getInputStream(); } } // Now that the content has been extracted, process it (upload the artifact to the s-ramp repo). responseMap = uploadArtifact(artifactType, fileName, artifactContent); } catch (ArtificerAtomException e) { responseMap = new HashMap<String, String>(); responseMap.put("exception", "true"); responseMap.put("exception-message", e.getMessage()); responseMap.put("exception-stack", ExceptionUtils.getRootStackTrace(e)); } catch (Throwable e) { responseMap = new HashMap<String, String>(); responseMap.put("exception", "true"); responseMap.put("exception-message", e.getMessage()); responseMap.put("exception-stack", ExceptionUtils.getRootStackTrace(e)); } finally { IOUtils.closeQuietly(artifactContent); } writeToResponse(responseMap, response); } else { response.sendError(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE, Messages.i18n.format("UploadServlet.ContentTypeNotSupported")); } } /** * Upload the artifact to the S-RAMP repository. * @param artifactType the type of s-ramp artifact * @param fileName the file name of the artifact being uploaded * @param artifactContent the content of the artifact * @throws Exception */ private Map<String, String> uploadArtifact(String artifactType, String fileName, InputStream artifactContent) throws Exception { File tempFile = stashResourceContent(artifactContent); Map<String, String> responseParams = new HashMap<String, String>(); try { if (artifactType != null && fileName.endsWith(".sramp")) { uploadPackage(tempFile, responseParams); } else { uploadSingleArtifact(artifactType, fileName, tempFile, responseParams); } } finally { FileUtils.deleteQuietly(tempFile); } return responseParams; } /** * Uploads an S-RAMP package to the repository. * @param tempFile * @param responseParams */ private void uploadPackage(File tempFile, Map<String, String> responseParams) throws Exception { ArtificerArchive archive = null; try { archive = new ArtificerArchive(tempFile); Map<String, ?> batch = ArtificerApiClientAccessor.getClient().uploadBatch(archive); int numSuccess = 0; int numFailed = 0; for (String key : batch.keySet()) { Object object = batch.get(key); if (object instanceof BaseArtifactType) { numSuccess++; } else { numFailed++; } } // TODO turn these things into constants responseParams.put("batch", "true"); responseParams.put("batchTotal", String.valueOf(numSuccess + numFailed)); responseParams.put("batchNumSuccess", String.valueOf(numSuccess)); responseParams.put("batchNumFailed", String.valueOf(numFailed)); } finally { ArtificerArchive.closeQuietly(archive); } } /** * Uploads a single artifact to the S-RAMP repository. * @param artifactType * @param fileName * @param tempFile * @param responseParams * @throws Exception */ private void uploadSingleArtifact(String artifactType, String fileName, File tempFile, Map<String, String> responseParams) throws Exception { InputStream contentStream = null; try { contentStream = FileUtils.openInputStream(tempFile); BaseArtifactType artifact; if (artifactType != null) { artifact = ArtificerApiClientAccessor.getClient().uploadArtifact(ArtifactType.valueOf(artifactType), contentStream, fileName); } else { artifact = ArtificerApiClientAccessor.getClient().uploadArtifact(contentStream, fileName); } ArtifactType responseArtifactType = ArtifactType.valueOf(artifact); responseParams.put("model", responseArtifactType.getModel()); responseParams.put("type", responseArtifactType.getType()); responseParams.put("uuid", artifact.getUuid()); } finally { IOUtils.closeQuietly(contentStream); } } }