/*
* Copyright 2004-2005 the original author or authors.
*
* 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.grails.plugins;
import grails.artefact.Enhanced;
import grails.config.ConfigMap;
import grails.plugins.GrailsPlugin;
import grails.plugins.GrailsPluginManager;
import grails.plugins.GrailsVersionUtils;
import grails.util.BuildScope;
import grails.util.Environment;
import grails.util.GrailsNameUtils;
import groovy.lang.ExpandoMetaClass;
import groovy.lang.GroovySystem;
import groovy.lang.MetaClassRegistry;
import groovy.util.ConfigObject;
import groovy.util.ConfigSlurper;
import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import grails.core.ArtefactHandler;
import grails.core.GrailsApplication;
import org.grails.core.legacy.LegacyGrailsApplication;
import org.grails.core.cfg.ConfigurationHelper;
import org.grails.spring.RuntimeSpringConfiguration;
import org.grails.io.support.GrailsResourceUtils;
import grails.plugins.exceptions.PluginException;
import org.codehaus.groovy.runtime.DefaultGroovyMethods;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.ConverterRegistry;
import org.springframework.core.convert.support.GenericConversionService;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.core.type.filter.TypeFilter;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Abstract implementation of the GrailsPluginManager interface
*
* @author Graeme Rocher
* @since 0.4
*/
public abstract class AbstractGrailsPluginManager implements GrailsPluginManager, org.codehaus.groovy.grails.plugins.GrailsPluginManager {
private static final Log LOG = LogFactory.getLog(AbstractGrailsPluginManager.class);
private static final String BLANK = "";
public static final String CONFIG_FILE = "Config";
protected List<GrailsPlugin> pluginList = new ArrayList<GrailsPlugin>();
protected GrailsApplication application;
protected Resource[] pluginResources = new Resource[0];
protected Map<String, GrailsPlugin> plugins = new HashMap<String, GrailsPlugin>();
protected Map<String, GrailsPlugin> classNameToPluginMap = new HashMap<String, GrailsPlugin>();
protected Class<?>[] pluginClasses = new Class[0];
protected boolean initialised = false;
protected boolean shutdown = false;
protected ApplicationContext applicationContext;
protected Map<String, GrailsPlugin> failedPlugins = new HashMap<String, GrailsPlugin>();
protected boolean loadCorePlugins = true;
public AbstractGrailsPluginManager(GrailsApplication application) {
Assert.notNull(application, "Argument [application] cannot be null!");
this.application = application;
}
public List<TypeFilter> getTypeFilters() {
List<TypeFilter> list = new ArrayList<TypeFilter>();
for (GrailsPlugin grailsPlugin : pluginList) {
list.addAll(grailsPlugin.getTypeFilters());
}
return Collections.unmodifiableList(list);
}
public GrailsPlugin[] getAllPlugins() {
return pluginList.toArray(new GrailsPlugin[pluginList.size()]);
}
public GrailsPlugin[] getFailedLoadPlugins() {
return failedPlugins.values().toArray(new GrailsPlugin[failedPlugins.size()]);
}
/**
* @return the initialised
*/
public boolean isInitialised() {
return initialised;
}
protected void checkInitialised() {
Assert.state(initialised, "Must call loadPlugins() before invoking configurational methods on GrailsPluginManager");
}
public GrailsPlugin getFailedPlugin(String name) {
if (name.indexOf('-') > -1) {
name = GrailsNameUtils.getPropertyNameForLowerCaseHyphenSeparatedName(name);
}
return failedPlugins.get(name);
}
/**
* Base implementation that simply goes through the list of plugins and calls doWithRuntimeConfiguration on each
* @param springConfig The RuntimeSpringConfiguration instance
*/
public void doRuntimeConfiguration(RuntimeSpringConfiguration springConfig) {
ApplicationContext context = springConfig.getUnrefreshedApplicationContext();
AutowireCapableBeanFactory autowireCapableBeanFactory = context.getAutowireCapableBeanFactory();
if(autowireCapableBeanFactory instanceof ConfigurableListableBeanFactory) {
ConfigurableListableBeanFactory beanFactory = (ConfigurableListableBeanFactory)autowireCapableBeanFactory;
ConversionService existingConversionService = beanFactory.getConversionService();
ConverterRegistry converterRegistry;
if(existingConversionService == null) {
GenericConversionService conversionService = new GenericConversionService();
converterRegistry = conversionService;
beanFactory.setConversionService(conversionService);
}
else {
converterRegistry = (ConverterRegistry)existingConversionService;
}
converterRegistry.addConverter(new Converter<GrailsApplication, org.codehaus.groovy.grails.commons.GrailsApplication>() {
@Override
public org.codehaus.groovy.grails.commons.GrailsApplication convert(GrailsApplication source) {
return new LegacyGrailsApplication(source);
}
});
converterRegistry.addConverter(new Converter<ConfigMap.NullSafeNavigator, Object>() {
@Override
public Object convert(ConfigMap.NullSafeNavigator source) {
return null;
}
});
}
checkInitialised();
for (GrailsPlugin plugin : pluginList) {
if (plugin.supportsCurrentScopeAndEnvironment()) {
plugin.doWithRuntimeConfiguration(springConfig);
}
}
}
/**
* Base implementation that will perform runtime configuration for the specified plugin name.
*/
public void doRuntimeConfiguration(String pluginName, RuntimeSpringConfiguration springConfig) {
checkInitialised();
GrailsPlugin plugin = getGrailsPlugin(pluginName);
if (plugin == null) {
throw new PluginException("Plugin [" + pluginName + "] not found");
}
if (!plugin.supportsCurrentScopeAndEnvironment()) {
return;
}
String[] dependencyNames = plugin.getDependencyNames();
doRuntimeConfigurationForDependencies(dependencyNames, springConfig);
String[] loadAfters = plugin.getLoadAfterNames();
for (String name : loadAfters) {
GrailsPlugin current = getGrailsPlugin(name);
if (current != null) {
current.doWithRuntimeConfiguration(springConfig);
}
}
plugin.doWithRuntimeConfiguration(springConfig);
}
private void doRuntimeConfigurationForDependencies(String[] dependencyNames, RuntimeSpringConfiguration springConfig) {
for (String dn : dependencyNames) {
GrailsPlugin current = getGrailsPlugin(dn);
if (current == null) {
throw new PluginException("Cannot load Plugin. Dependency [" + current + "] not found");
}
String[] pluginDependencies = current.getDependencyNames();
if (pluginDependencies.length > 0) {
doRuntimeConfigurationForDependencies(pluginDependencies, springConfig);
}
current.doWithRuntimeConfiguration(springConfig);
}
}
/**
* Base implementation that will simply go through each plugin and call doWithApplicationContext on each.
*/
public void doPostProcessing(ApplicationContext ctx) {
checkInitialised();
for (GrailsPlugin plugin : pluginList) {
if (plugin.supportsCurrentScopeAndEnvironment()) {
plugin.doWithApplicationContext(ctx);
}
}
}
public Resource[] getPluginResources() {
return pluginResources;
}
public GrailsPlugin getGrailsPlugin(String name) {
if (name.indexOf('-') > -1) {
name = GrailsNameUtils.getPropertyNameForLowerCaseHyphenSeparatedName(name);
}
return plugins.get(name);
}
public GrailsPlugin getGrailsPluginForClassName(String name) {
return classNameToPluginMap.get(name);
}
public GrailsPlugin getGrailsPlugin(String name, Object version) {
if (name.indexOf('-') > -1) {
name = GrailsNameUtils.getPropertyNameForLowerCaseHyphenSeparatedName(name);
}
GrailsPlugin plugin = plugins.get(name);
if (plugin != null && GrailsVersionUtils.isValidVersion(plugin.getVersion(), version.toString())) {
return plugin;
}
return null;
}
public boolean hasGrailsPlugin(String name) {
if (name.indexOf('-') > -1) {
name = GrailsNameUtils.getPropertyNameForLowerCaseHyphenSeparatedName(name);
}
return plugins.containsKey(name);
}
public void doDynamicMethods() {
checkInitialised();
Class<?>[] allClasses = application.getAllClasses();
if (allClasses != null) {
for (Class<?> c : allClasses) {
ExpandoMetaClass emc = new ExpandoMetaClass(c, true, true);
emc.initialize();
}
for (GrailsPlugin plugin : pluginList) {
plugin.doWithDynamicMethods(applicationContext);
}
}
}
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
if (applicationContext != null) {
for (GrailsPlugin plugin : pluginList) {
plugin.setApplicationContext(applicationContext);
}
}
}
public void setApplication(GrailsApplication application) {
Assert.notNull(application, "Argument [application] cannot be null");
this.application = application;
for (GrailsPlugin plugin : pluginList) {
plugin.setApplication(application);
}
}
public void registerProvidedArtefacts(GrailsApplication app) {
checkInitialised();
for (GrailsPlugin plugin : pluginList) {
if (plugin.supportsCurrentScopeAndEnvironment()) {
for (Class<?> artefact : plugin.getProvidedArtefacts()) {
String shortName = GrailsNameUtils.getShortName(artefact);
if (!isAlreadyRegistered(app, artefact, shortName)) {
app.addOverridableArtefact(artefact);
}
}
}
}
}
private boolean isAlreadyRegistered(GrailsApplication app, Class<?> artefact, String shortName) {
return app.getClassForName(shortName) != null || app.getClassForName(artefact.getName()) != null;
}
public void doArtefactConfiguration() {
checkInitialised();
for (GrailsPlugin plugin : pluginList) {
if (plugin.supportsCurrentScopeAndEnvironment()) {
plugin.doArtefactConfiguration();
}
}
}
public void shutdown() {
checkInitialised();
try {
for (GrailsPlugin plugin : pluginList) {
if (plugin.supportsCurrentScopeAndEnvironment()) {
plugin.notifyOfEvent(GrailsPlugin.EVENT_ON_SHUTDOWN, plugin);
}
}
} finally {
shutdown = true;
}
}
public boolean isShutdown() {
return shutdown;
}
public boolean supportsCurrentBuildScope(String pluginName) {
GrailsPlugin plugin = getGrailsPlugin(pluginName);
return plugin == null || plugin.supportsScope(BuildScope.getCurrent());
}
public void setLoadCorePlugins(boolean shouldLoadCorePlugins) {
loadCorePlugins = shouldLoadCorePlugins;
}
public void informOfClassChange(Class<?> aClass) {
if (aClass == null || application == null) {
return;
}
ArtefactHandler handler = application.getArtefactType(aClass);
if (handler == null) {
return;
}
String pluginName = handler.getPluginName();
if (pluginName == null) {
return;
}
GrailsPlugin plugin = getGrailsPlugin(pluginName);
if (plugin != null) {
plugin.notifyOfEvent(GrailsPlugin.EVENT_ON_CHANGE, aClass);
}
}
public String getPluginPath(String name) {
GrailsPlugin plugin = getGrailsPlugin(name);
if (plugin != null && !plugin.isBasePlugin()) {
return plugin.getPluginPath();
}
return BLANK;
}
public String getPluginPathForInstance(Object instance) {
if (instance != null) {
return getPluginPathForClass(instance.getClass());
}
return null;
}
public GrailsPlugin getPluginForInstance(Object instance) {
if (instance != null) {
return getPluginForClass(instance.getClass());
}
return null;
}
public GrailsPlugin getPluginForClass(Class<?> theClass) {
if (theClass != null) {
grails.plugins.metadata.GrailsPlugin ann =
theClass.getAnnotation(grails.plugins.metadata.GrailsPlugin.class);
if (ann != null) {
return getGrailsPlugin(ann.name());
}
}
return null;
}
public void informPluginsOfConfigChange() {
for (GrailsPlugin plugin : pluginList) {
plugin.notifyOfEvent(GrailsPlugin.EVENT_ON_CONFIG_CHANGE, application.getConfig());
}
}
public void informOfFileChange(File file) {
String className = GrailsResourceUtils.getClassName(file.getAbsolutePath());
Class<?> cls = null;
if (className != null) {
cls = loadApplicationClass(className);
}
informOfClassChange(file, cls);
}
public void informOfClassChange(File file, @SuppressWarnings("rawtypes") Class cls) {
if (cls != null && (cls.getName().equals(CONFIG_FILE) || cls.getName().equals(GrailsApplication.DATA_SOURCE_CLASS))) {
ConfigSlurper configSlurper = ConfigurationHelper.getConfigSlurper(Environment.getCurrent().getName(), application);
ConfigObject c;
try {
c = configSlurper.parse(file.toURI().toURL());
application.getConfig().merge(c);
application.configChanged();
informPluginsOfConfigChange();
} catch (Exception e) {
// ignore
LOG.debug("Error in changing Config", e);
}
}
else {
if (cls != null) {
MetaClassRegistry registry = GroovySystem.getMetaClassRegistry();
registry.removeMetaClass(cls);
ExpandoMetaClass newMc = new ExpandoMetaClass(cls, true, true);
newMc.initialize();
registry.setMetaClass(cls, newMc);
Enhanced en = AnnotationUtils.findAnnotation(cls,Enhanced.class);
if (en != null) {
Class<?>[] mixinClasses = en.mixins();
if (mixinClasses != null) {
DefaultGroovyMethods.mixin(newMc, mixinClasses);
}
}
}
for (GrailsPlugin grailsPlugin : pluginList) {
if (grailsPlugin.hasInterestInChange(file.getAbsolutePath())) {
try {
if (cls == null) {
grailsPlugin.notifyOfEvent(GrailsPlugin.EVENT_ON_CHANGE, new FileSystemResource(file));
}
else {
grailsPlugin.notifyOfEvent(GrailsPlugin.EVENT_ON_CHANGE, cls);
}
Environment.setCurrentReloadError(null);
} catch (Exception e) {
LOG.error("Plugin " + grailsPlugin + " could not reload changes to file [" +
file + "]: " + e.getMessage(), e);
Environment.setCurrentReloadError(e);
}
}
}
}
}
private Class<?> loadApplicationClass(String className) {
Class<?> cls = null;
try {
cls = application.getClassLoader().loadClass(className);
} catch (ClassNotFoundException e) {
// ignore
}
return cls;
}
public String getPluginPathForClass(Class<?> theClass) {
if (theClass != null) {
grails.plugins.metadata.GrailsPlugin ann =
theClass.getAnnotation(grails.plugins.metadata.GrailsPlugin.class);
if (ann != null) {
return getPluginPath(ann.name());
}
}
return null;
}
public String getPluginViewsPathForInstance(Object instance) {
if (instance != null) {
return getPluginViewsPathForClass(instance.getClass());
}
return null;
}
public String getPluginViewsPathForClass(Class<?> theClass) {
if (theClass != null) {
final String path = getPluginPathForClass(theClass);
if (StringUtils.hasText(path)) {
return path + '/' + GrailsResourceUtils.GRAILS_APP_DIR + "/views";
}
}
return null;
}
}