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// $Id$
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/**
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* Copyright (C) 2015 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.api.application;
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import java.io.File;
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import java.io.IOException;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.lang.reflect.Type;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.URL;
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import java.util.Dictionary;
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import java.util.jar.Attributes;
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import java.util.jar.JarFile;
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import java.util.jar.Manifest;
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import org.eclipse.core.runtime.FileLocator;
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import org.eclipse.core.runtime.Platform;
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import org.eclipse.osgi.util.ManifestElement;
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import org.osgi.framework.Bundle;
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import org.osgi.framework.BundleException;
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import org.osgi.framework.Constants;
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import org.springframework.security.core.context.SecurityContext;
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import eu.etaxonomy.cdm.api.cache.CdmServiceCacher;
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import eu.etaxonomy.cdm.api.service.ICommonService;
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import eu.etaxonomy.cdm.api.service.IService;
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import eu.etaxonomy.cdm.api.service.ITestService;
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import eu.etaxonomy.cdm.io.service.IIOService;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.taxeditor.service.ICachedCommonService;
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import eu.etaxonomy.taxeditor.session.DefaultNewEntityListener;
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/**
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* @author cmathew
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* @date 17 Jun 2015
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*
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*/
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public class CdmApplicationState {
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private static CdmApplicationState cdmApplicationState;
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private ICdmApplicationConfiguration appConfig;
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private ICdmDataChangeService dataChangeService;
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private SecurityContext securityContext;
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private static CdmServiceCacher cdmServiceCacher;
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private static String cdmlibVersion = null;
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private static String cdmlibLastModified = null;
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public static CdmApplicationState getInstance() {
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if(cdmApplicationState == null) {
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cdmApplicationState = new CdmApplicationState();
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}
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return cdmApplicationState;
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}
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public void setAppConfig(ICdmApplicationConfiguration appConfig) {
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this.appConfig = appConfig;
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if(appConfig instanceof CdmApplicationRemoteController) {
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CdmBase.setNewEntityListener(new DefaultNewEntityListener());
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} else {
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CdmBase.setNewEntityListener(null);
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}
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}
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public ICdmApplicationConfiguration getAppConfig() {
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return appConfig;
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}
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public static void setCurrentAppConfig(ICdmApplicationConfiguration appConfig) {
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getInstance().setAppConfig(appConfig);
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}
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public static ICdmApplicationConfiguration getCurrentAppConfig() {
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return getInstance().getAppConfig();
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}
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/**
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* @return the dataChangeService
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*/
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public ICdmDataChangeService getDataChangeService() {
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return dataChangeService;
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}
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/**
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* @param dataChangeService the dataChangeService to set
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*/
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public void setDataChangeService(ICdmDataChangeService dataChangeService) {
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this.dataChangeService = dataChangeService;
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}
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public static ICdmDataChangeService getCurrentDataChangeService() {
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return getInstance().getDataChangeService();
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}
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public static void setCurrentDataChangeService(ICdmDataChangeService dataChangeService) {
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getInstance().setDataChangeService(dataChangeService);
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}
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/**
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* @return the securityContext
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*/
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public SecurityContext getSecurityContext() {
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return securityContext;
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}
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/**
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* @param securityContext the securityContext to set
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*/
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public void setSecurityContext(SecurityContext securityContext) {
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this.securityContext = securityContext;
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}
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/**
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* @return the securityContext
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*/
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public static SecurityContext getCurrentSecurityContext() {
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return getInstance().getSecurityContext();
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}
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/**
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* @param securityContext the securityContext to set
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*/
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public static void setCurrentSecurityContext(SecurityContext securityContext) {
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getInstance().setSecurityContext(securityContext);
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}
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public static void dispose() {
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getInstance().setCurrentDataChangeService(null);
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getInstance().setAppConfig(null);
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getInstance().setSecurityContext(null);
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cdmApplicationState = null;
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cdmServiceCacher = null;
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cdmlibVersion = null;
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cdmlibLastModified = null;
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}
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/**
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* Generic method that will scan the getters of {@link ICdmApplicationConfiguration} for the given service
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* interface. If a matching getter is found the according service implementation is returned by
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* invoking the getter otherwise the method returns <code>null</code>.
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*
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* @param <T>
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* @param serviceClass
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* @return the configured implementation of <code>serviceClass</code> or <code>null</code>
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* @throws CdmApplicationException
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*/
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public static <T extends IService> T getService(Class<T> serviceClass) throws CdmApplicationException {
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ICdmApplicationConfiguration configuration = getCurrentAppConfig();
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Method[] methods = ICdmApplicationConfiguration.class.getDeclaredMethods();
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T service = null;
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for (Method method : methods) {
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Type type = method.getGenericReturnType();
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if (type.equals(serviceClass)) {
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try {
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service = (T) method.invoke(configuration, null);
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break;
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} catch (IllegalArgumentException iae) {
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throw new CdmApplicationException(iae);
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} catch (IllegalAccessException iae) {
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throw new CdmApplicationException(iae);
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} catch (InvocationTargetException ite) {
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throw new CdmApplicationException(ite);
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}
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}
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}
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return service;
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}
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/**
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* @see #getService(Class)
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* As ICommonService is not extending IService we need a specific request here
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*/
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public static ICommonService getCommonService() {
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ICdmApplicationConfiguration configuration = getCurrentAppConfig();
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return configuration.getCommonService();
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}
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public static IIOService getIOService() {
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ICdmApplicationConfiguration configuration = getCurrentAppConfig();
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return ((CdmApplicationRemoteController)configuration).getIOService();
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}
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public static ITestService getTestService() {
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ICdmApplicationConfiguration configuration = getCurrentAppConfig();
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return ((CdmApplicationRemoteController)configuration).getTestService();
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}
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public static ICachedCommonService getCachedCommonService() {
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ICdmApplicationConfiguration configuration = getCurrentAppConfig();
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return ((CdmApplicationRemoteController)configuration).getCachedCommonService();
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}
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public static CdmServiceCacher getCdmServiceCacher() {
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return cdmServiceCacher;
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}
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public static void setCdmServiceCacher(CdmServiceCacher cacher) {
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cdmServiceCacher = cacher;
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}
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public static void updateCdmlibManifestInfo() {
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cdmlibVersion = null;
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cdmlibLastModified = null;
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String cdmlibPathPrefix = "lib/cdmlib-services-";
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String jarSuffix = ".jar";
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Bundle bundle = Platform.getBundle("eu.etaxonomy.taxeditor.cdmlib");
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Dictionary<String, String> headers = bundle.getHeaders();
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String bundleClasspath = headers.get(Constants.BUNDLE_CLASSPATH);
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try {
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ManifestElement[] elements = ManifestElement.parseHeader(Constants.BUNDLE_CLASSPATH, bundleClasspath);
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for (ManifestElement manifestElement : elements) {
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String jar = manifestElement.getValue();
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if(jar.startsWith(cdmlibPathPrefix) && jar.endsWith(jarSuffix)) {
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URL fileURL = bundle.getEntry(jar);
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File file = null;
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try {
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String urlString = FileLocator.resolve(fileURL).toExternalForm().replace(" ", "%20");
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file = new File(new URI(urlString));
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JarFile jarFile = new JarFile(file);
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Manifest manifest = jarFile.getManifest();
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Attributes attributes = manifest.getMainAttributes();
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// from the OSGI spec the LastModified value is " the number of milliseconds
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// since midnight Jan. 1, 1970 UTC with the condition that a change must
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// always result in a higher value than the previous last modified time
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// of any bundle"
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cdmlibVersion = attributes.getValue("Bundle-Version");
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cdmlibLastModified = attributes.getValue("Bnd-LastModified");
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jarFile.close();
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if(cdmlibVersion == null || cdmlibLastModified == null) {
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throw new IllegalStateException("Invalid cdmlib manifest info");
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}
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} catch (URISyntaxException urise) {
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throw new IllegalStateException(urise);
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} catch (IOException ioe) {
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throw new IllegalStateException(ioe);
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}
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}
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}
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} catch (BundleException e) {
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throw new IllegalStateException(e);
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}
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}
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public static String getCdmlibVersion() {
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if(cdmlibVersion == null) {
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updateCdmlibManifestInfo();
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}
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return cdmlibVersion;
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}
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public static String getCdmlibLastModified() {
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if(cdmlibLastModified == null) {
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updateCdmlibManifestInfo();
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}
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return cdmlibLastModified;
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}
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}
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