Java tutorial
/* * Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com * The software in this package is published under the terms of the CPAL v1.0 * license, a copy of which has been included with this distribution in the * LICENSE.txt file. */ package org.mule.module.launcher; import org.mule.config.i18n.MessageFactory; import org.mule.util.FileUtils; import org.mule.util.FilenameUtils; import java.beans.Introspector; import java.io.File; import java.io.IOException; import java.net.URISyntaxException; import java.net.URL; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * Installer for mule artifacts inside the mule container directories. */ public class ArtifactArchiveInstaller { protected static final String ANCHOR_FILE_BLURB = "Delete this file while Mule is running to remove the artifact in a clean way."; protected transient final Log logger = LogFactory.getLog(getClass()); private final File artifactParentDir; public ArtifactArchiveInstaller(File artifactParentDir) { this.artifactParentDir = artifactParentDir; } /** * Installs an artifact in the mule container. * * Created the artifact directory and the anchor file related. * * @param artifactUrl URL of the artifact to install. It must be present in the artifact directory as a zip file. * @return the name of the installed artifact. * @throws IOException in case there was an error reading from the artifact or writing to the artifact folder. */ public String installArtifact(final URL artifactUrl) throws IOException { if (!artifactUrl.toString().endsWith(".zip")) { throw new IllegalArgumentException("Invalid Mule artifact archive: " + artifactUrl); } final String baseName = FilenameUtils.getBaseName(artifactUrl.toString()); if (baseName.contains("%20")) { throw new DeploymentInitException( MessageFactory.createStaticMessage("Mule artifact name may not contain spaces: " + baseName)); } File artifactDir = null; boolean errorEncountered = false; String artifactName; try { final String fullPath = artifactUrl.toURI().toString(); if (logger.isInfoEnabled()) { logger.info("Exploding a Mule artifact archive: " + fullPath); } artifactName = FilenameUtils.getBaseName(fullPath); artifactDir = new File(artifactParentDir, artifactName); // normalize the full path + protocol to make unzip happy final File source = new File(artifactUrl.toURI()); FileUtils.unzip(source, artifactDir); if ("file".equals(artifactUrl.getProtocol())) { FileUtils.deleteQuietly(source); } } catch (URISyntaxException e) { errorEncountered = true; final IOException ex = new IOException(e.getMessage()); ex.fillInStackTrace(); throw ex; } catch (IOException e) { errorEncountered = true; throw e; } catch (Throwable t) { errorEncountered = true; final String msg = "Failed to install artifact from URL: " + artifactUrl; throw new DeploymentInitException(MessageFactory.createStaticMessage(msg), t); } finally { // delete an artifact dir, as it's broken if (errorEncountered && artifactDir != null && artifactDir.exists()) { FileUtils.deleteTree(artifactDir); } } return artifactName; } /** * Desintalls an artifact from the mule container installation. * * It will remove the artifact folder and the anchor file related * @param artifactName name of the artifact to be uninstall. */ public void desinstallArtifact(final String artifactName) { try { final File artifactDir = new File(artifactParentDir, artifactName); FileUtils.deleteDirectory(artifactDir); // remove a marker, harmless, but a tidy artifact dir is always better :) File marker = getArtifactAnchorFile(artifactName); marker.delete(); Introspector.flushCaches(); } catch (Throwable t) { if (t instanceof DeploymentException) { throw ((DeploymentException) t); } final String msg = String.format("Failed to undeployArtifact artifact [%s]", artifactName); throw new DeploymentException(MessageFactory.createStaticMessage(msg), t); } } private File getArtifactAnchorFile(String artifactName) { return new File(artifactParentDir, String.format("%s%s", artifactName, MuleDeploymentService.ARTIFACT_ANCHOR_SUFFIX)); } public void createAnchorFile(String artifactName) throws IOException { // save artifact's state in the marker file File marker = getArtifactAnchorFile(artifactName); FileUtils.writeStringToFile(marker, ANCHOR_FILE_BLURB); } }