Java tutorial
/* * Copyright (c) 2011, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * 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.wso2.bps.samples.migration.deployment; import org.apache.axis2.util.XMLUtils; import org.apache.commons.io.FilenameUtils; import org.w3c.dom.Document; import org.wso2.carbon.humantask.HumanInteractionsDocument; import org.wso2.carbon.humantask.core.HumanTaskConstants; import org.wso2.carbon.humantask.core.deployment.HumanTaskDeploymentException; import org.wso2.carbon.humantask.core.deployment.HumanTaskDeploymentUnitBuilder; import org.wso2.carbon.humantask.core.deployment.HumanTaskWSDLLocator; import org.wso2.carbon.humantask.core.deployment.config.HTDeploymentConfigDocument; import org.wso2.carbon.humantask.core.utils.FileUtils; import org.xml.sax.SAXException; import javax.wsdl.Definition; import javax.wsdl.WSDLException; import javax.wsdl.factory.WSDLFactory; import javax.wsdl.xml.WSDLReader; import javax.xml.parsers.ParserConfigurationException; import java.io.*; import java.net.URI; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; /** * Process HumanTask zip archive to get humanTask related files * Are we doing this? This class is no longer used since a Registry Handler is used to get the job done */ public class ArchiveBasedHumanTaskDeploymentUnitBuilder extends HumanTaskDeploymentUnitBuilder { private static final FileFilter wsdlFilter = new FileFilter() { public boolean accept(File path) { return path.getName().endsWith(".wsdl") && path.isFile(); } }; private static final FileFilter xsdFilter = new FileFilter() { public boolean accept(File path) { return path.getName().endsWith(".xsd") && path.isFile(); } }; private static final FileFilter humantaskFilter = new FileFilter() { public boolean accept(File path) { return path.getName().endsWith(HumanTaskConstants.HUMANTASK_FILE_EXT) && path.isFile(); } }; private File humantaskDir; private String fileName; private int tenantId; private long version; private String md5sum; private List<Definition> wsdlDefinitions = new ArrayList<Definition>(); private InputStream hiDefinition; private InputStream hiConfiguration; private File humanTaskDefinitionFile; private Map<String, InputStream> wsdlsMap = new HashMap<String, InputStream>(); private Map<String, InputStream> schemasMap = new HashMap<String, InputStream>(); // Build human task deployment unit with unextracted archive public ArchiveBasedHumanTaskDeploymentUnitBuilder(String BPS_HOME, File hiArchiveZip, int tenantId, long version, String md5sum) throws HumanTaskDeploymentException { String hiArchiveZipName = hiArchiveZip.getName(); this.fileName = FilenameUtils.removeExtension(hiArchiveZipName); this.tenantId = tenantId; this.version = version; this.md5sum = md5sum; humantaskDir = extractHumanTaskArchive(hiArchiveZip, tenantId, version, BPS_HOME); buildHumanInteractionDocuments(); buildDeploymentConfiguration(); buildWSDLs(); buildSchemas(); } // Build human task deployment unit with the public ArchiveBasedHumanTaskDeploymentUnitBuilder(File extractedTaskArchive, int tenantId, long version, String packageName, String md5sum) throws HumanTaskDeploymentException { this.fileName = packageName; this.version = version; this.humantaskDir = extractedTaskArchive; this.tenantId = tenantId; this.md5sum = md5sum; buildHumanInteractionDocuments(); buildDeploymentConfiguration(); buildWSDLs(); buildSchemas(); } /** * Read the WSDL file given the input stream for the WSDL source * * @param in WSDL input stream * @param entryName ZIP file entry name * @param fromRegistry whether the wsdl is read from registry * @return WSDL Definition * @throws javax.wsdl.WSDLException at parser error */ public static Definition readInTheWSDLFile(InputStream in, String entryName, boolean fromRegistry) throws WSDLException { WSDLReader reader = WSDLFactory.newInstance().newWSDLReader(); // switch off the verbose mode for all usecases reader.setFeature(HumanTaskConstants.JAVAX_WSDL_VERBOSE_MODE_KEY, false); reader.setFeature("javax.wsdl.importDocuments", true); Definition def; Document doc; try { doc = XMLUtils.newDocument(in); } catch (ParserConfigurationException e) { throw new WSDLException(WSDLException.PARSER_ERROR, "Parser Configuration Error", e); } catch (SAXException e) { throw new WSDLException(WSDLException.PARSER_ERROR, "Parser SAX Error", e); } catch (IOException e) { throw new WSDLException(WSDLException.INVALID_WSDL, "IO Error", e); } if (fromRegistry) { throw new UnsupportedOperationException( "This operation is not currently " + "supported in this version of WSO2 BPS."); } else { def = reader.readWSDL(entryName, doc.getDocumentElement()); } def.setDocumentBaseURI(entryName); return def; } public static File extractHumanTaskArchive(final File archiveFile, int tenantId, long version, String BPS_HOME) throws HumanTaskDeploymentException { ZipInputStream zipStream = null; try { String humanTaskExtractionLocation = BPS_HOME + File.separator + "repository" + File.separator + HumanTaskConstants.HUMANTASK_REPO_DIRECTORY + File.separator + tenantId + File.separator + FilenameUtils.removeExtension(archiveFile.getName()) + "-" + version; zipStream = new ZipInputStream(new FileInputStream(archiveFile)); ZipEntry entry; while ((entry = zipStream.getNextEntry()) != null) { if (entry.isDirectory()) { if (!new File(humanTaskExtractionLocation, entry.getName()).mkdirs() && !new File(humanTaskExtractionLocation, entry.getName()).exists()) { throw new HumanTaskDeploymentException("Archive extraction failed. " + "Cannot create directory: " + new File(humanTaskExtractionLocation, entry.getName()).getAbsolutePath() + "."); } continue; } File destFile = new File(humanTaskExtractionLocation, entry.getName()); if (!destFile.getParentFile().exists() && !destFile.getParentFile().mkdirs()) { throw new HumanTaskDeploymentException("Archive extraction failed. " + "Cannot create directory: " + destFile.getParentFile().getAbsolutePath()); } BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(destFile)); copyInputStream(zipStream, outputStream); } return new File(humanTaskExtractionLocation); } catch (IOException e) { String errMsg = "Error occurred during extracting the archive: " + archiveFile; System.out.println(errMsg); throw new HumanTaskDeploymentException(errMsg, e); } finally { if (zipStream != null) { try { zipStream.close(); } catch (IOException e) { String errMsg = "Error occurred during extracting the archive: " + archiveFile; System.out.println(errMsg + e); throw new HumanTaskDeploymentException(errMsg, e); } } } } private static void copyInputStream(final InputStream in, OutputStream out) throws IOException { byte[] buffer = new byte[1024]; int len; while ((len = in.read(buffer)) >= 0) { out.write(buffer, 0, len); } out.close(); } @Override public void buildHumanInteractionDocuments() throws HumanTaskDeploymentException { if (hiDefinition == null) { List<File> hiDefinitionFiles = FileUtils.directoryEntriesInPath(humantaskDir, humantaskFilter); if (hiDefinitionFiles.size() != 1) { String errMsg; if (hiDefinitionFiles.size() == 0) { errMsg = "No human task definition files were found in " + fileName; } else { errMsg = hiDefinitionFiles.size() + " human task definition files were found in " + fileName; } System.out.println(errMsg); throw new HumanTaskDeploymentException(errMsg); } try { hiDefinition = new FileInputStream(hiDefinitionFiles.get(0)); humanTaskDefinitionFile = hiDefinitionFiles.get(0); } catch (FileNotFoundException e) { System.out.println(e.getMessage()); throw new HumanTaskDeploymentException("Error building humantask archive; " + fileName, e); } } } @Override public void buildDeploymentConfiguration() throws HumanTaskDeploymentException { if (hiConfiguration == null) { File humantaskConfFile = new File(humantaskDir, "htconfig.xml"); if (!humantaskConfFile.exists()) { String errMsg = "htconfig.xml file not found for the " + fileName; System.out.println(errMsg); throw new HumanTaskDeploymentException(errMsg); } try { hiConfiguration = new FileInputStream(humantaskConfFile); } catch (FileNotFoundException e) { System.out.println(e.getMessage()); throw new HumanTaskDeploymentException("Error building humantask archive: " + fileName, e); } } } @Override public void buildWSDLs() throws HumanTaskDeploymentException { URI baseUri = humantaskDir.toURI(); for (File file : FileUtils.directoryEntriesInPath(humantaskDir, wsdlFilter)) { try { URI uri = baseUri.relativize(file.toURI()); if (!uri.isAbsolute()) { File f = new File(baseUri.getPath() + File.separator + uri.getPath()); URI abUri = f.toURI(); if (abUri.isAbsolute()) { uri = abUri; } } WSDLReader reader = WSDLFactory.newInstance().newWSDLReader(); reader.setFeature(HumanTaskConstants.JAVAX_WSDL_VERBOSE_MODE_KEY, false); reader.setFeature("javax.wsdl.importDocuments", true); Definition definition = reader.readWSDL(new HumanTaskWSDLLocator(uri)); wsdlDefinitions.add(definition); } catch (WSDLException e) { System.out.println("Error processing wsdl " + file.getName()); throw new HumanTaskDeploymentException(" Error processing wsdl ", e); } catch (URISyntaxException e) { System.out.println("Invalid uri in reading wsdl "); throw new HumanTaskDeploymentException(" Invalid uri in reading wsdl ", e); } // wsdlsMap.put(file.getName(), is); } } @Override public void buildSchemas() throws HumanTaskDeploymentException { for (File file : FileUtils.directoryEntriesInPath(humantaskDir, xsdFilter)) { InputStream is; try { is = new FileInputStream(file); } catch (FileNotFoundException e) { System.out.println(e.getMessage()); throw new HumanTaskDeploymentException("Error building humantask archive: " + fileName, e); } schemasMap.put(file.getName(), is); } } @Override public HumanInteractionsDocument getHumanInteractionsDocument() throws HumanTaskDeploymentException { HumanInteractionsDocument hiDoc; try { hiDoc = HumanInteractionsDocument.Factory.parse(hiDefinition); } catch (Exception e) { String errMsg = "Error occurred while parsing the human interaction definition"; System.out.println(errMsg); throw new HumanTaskDeploymentException(errMsg, e); } return hiDoc; } @Override public HTDeploymentConfigDocument getHTDeploymentConfigDocument() throws HumanTaskDeploymentException { HTDeploymentConfigDocument hiConf; try { hiConf = HTDeploymentConfigDocument.Factory.parse(hiConfiguration); } catch (Exception e) { String errMsg = "Error occurred while parsing the human interaction configuration " + "file: htconfig.xml"; System.out.println(errMsg); throw new HumanTaskDeploymentException(errMsg, e); } return hiConf; } @Override public String getArchiveName() { return fileName; } public List<Definition> getWsdlDefinitions() throws HumanTaskDeploymentException { return wsdlDefinitions; } @Override public long getVersion() { return this.version; } @Override public String getMd5sum() { return this.md5sum; } public File getHumanTaskDefinitionFile() { return humanTaskDefinitionFile; } }