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package org.glassfish.config.support;
import com.sun.enterprise.config.util.ConfigApiLoggerInfo;
import com.sun.enterprise.util.LocalStringManagerImpl;
import org.glassfish.api.Param;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.CommandModelProvider;
import org.glassfish.common.util.admin.ParamTokenizer;
import org.jvnet.hk2.config.Attribute;
import org.jvnet.hk2.config.ConfigBeanProxy;
import org.jvnet.hk2.config.ConfigModel;
import org.jvnet.hk2.config.DomDocument;
import org.jvnet.hk2.config.GenerateServiceFromMethod;
import org.jvnet.hk2.config.InjectionManager;
import org.jvnet.hk2.config.InjectionResolver;
import org.jvnet.hk2.config.TransactionFailure;
import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.HK2Loader;
import org.glassfish.hk2.api.MultiException;
import org.glassfish.hk2.api.PostConstruct;
import org.glassfish.hk2.api.Self;
import org.glassfish.hk2.api.ServiceLocator;
import org.jvnet.tiger_types.Types;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.inject.Inject;
import org.glassfish.api.admin.AdminCommandSecurity;
import org.glassfish.api.logging.LogHelper;
/**
* services pertinent to generic CRUD command implementations
*
* @author Jerome Dochez
*
*/
public abstract class GenericCrudCommand implements CommandModelProvider, PostConstruct, AdminCommandSecurity.Preauthorization {
private InjectionResolver<Param> injector;
@Inject @Self
private ActiveDescriptor<?> myself;
final protected static Logger logger = ConfigApiLoggerInfo.getLogger();
final protected static LocalStringManagerImpl localStrings = new LocalStringManagerImpl(GenericCrudCommand.class);
protected String commandName;
protected Class parentType=null;
protected Class targetType=null;
protected Method targetMethod;
// default level of noise, useful for just swithching these classes in debugging.
protected final Level level = Level.FINE;
@Inject
ServiceLocator habitat;
InjectionManager manager;
CrudResolver resolver;
InjectionResolver paramResolver;
Class<? extends CrudResolver> resolverType;
void prepareInjection(final AdminCommandContext ctx) {
// inject resolver with command parameters...
manager = new InjectionManager();
resolver = habitat.getService(resolverType);
paramResolver = getInjectionResolver();
manager.inject(resolver, paramResolver);
}
@Override
public boolean preAuthorization(AdminCommandContext adminCommandContext) {
prepareInjection(adminCommandContext);
return true;
}
private static String getOne(String key, Map<String, List<String>> metadata) {
if (key == null || metadata == null) return null;
List<String> findInMe = metadata.get(key);
if (findInMe == null) return null;
return findInMe.get(0);
}
public void postConstruct() {
commandName = myself.getName();
String parentTypeName = getOne(GenerateServiceFromMethod.PARENT_CONFIGURED, myself.getMetadata());
if (logger.isLoggable(level)) {
logger.log(level,"Generic method parent targeted type is " + parentTypeName);
}
try {
parentType = loadClass(parentTypeName);
}
catch(ClassNotFoundException e) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.configbean_not_found",
"The Config Bean {0} cannot be loaded by the generic command implementation : {1}",
parentTypeName, e.getMessage());
LogHelper.log(logger, Level.SEVERE, ConfigApiLoggerInfo.CFG_BEAN_CL_FAILED, e, parentTypeName);
throw new RuntimeException(msg, e);
}
// find now the accessor method.
String methodName = getOne(GenerateServiceFromMethod.METHOD_NAME, myself.getMetadata());
targetMethod=null;
methodlookup:
for (Method m : parentType.getMethods()) {
if (m.getName().equals(methodName)) {
// Make sure that this method is annotated with an annotation
// that is annotated with InhabitantAnnotation (such as @Create).
// This makes sure that we have found the method we are looking for
// in case there is a like-named method that is not annotated.
for (Annotation a : m.getAnnotations()) {
if (a.annotationType().getAnnotation(GenerateServiceFromMethod.class) != null) {
targetMethod=m;
break methodlookup;
}
}
}
}
if (targetMethod==null) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.configbean_not_found",
"The Config Bean {0} cannot be loaded by the generic command implementation : {1}",
parentTypeName, methodName);
logger.log(Level.SEVERE, ConfigApiLoggerInfo.CFG_BEAN_CL_FAILED, parentTypeName);
throw new RuntimeException(msg);
}
String targetTypeName = getOne(GenerateServiceFromMethod.METHOD_ACTUAL, myself.getMetadata());
try {
targetType = loadClass(targetTypeName);
}
catch(ClassNotFoundException e) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.configbean_not_found",
"The Config Bean {0} cannot be loaded by the generic command implementation : {1}",
targetTypeName, e.getMessage());
LogHelper.log(logger, Level.SEVERE, ConfigApiLoggerInfo.CFG_BEAN_CL_FAILED, e, targetTypeName);
throw new RuntimeException(msg, e);
}
}
protected <T extends Annotation> T getAnnotation(Method target, Class<T> type) {
T annotation = targetMethod.getAnnotation(type);
if (annotation == null) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.annotation_not_found",
"Cannot find annotation {0} with value {1} on method {2}",
type.getName(), commandName, targetMethod.toString());
throw new RuntimeException(msg);
}
return annotation;
}
/**
* we need to have access to the injector instance that has all the parameters context
* @param injector the original command injector
*/
// todo : would be lovely to replace this with some smart injection...
public void setInjectionResolver(InjectionResolver<Param> injector) {
this.injector = injector;
}
public InjectionResolver<Param> getInjectionResolver() {
final InjectionResolver<Param> delegate = injector;
return new InjectionResolver<Param>(Param.class) {
@Override
public <V> V getValue(Object component, AnnotatedElement annotated, Type genericType, Class<V> type) throws MultiException {
if (type.isAssignableFrom(List.class)) {
final List<ConfigBeanProxy> values;
try {
if (annotated instanceof Method) {
values = (List<ConfigBeanProxy>) ((Method) annotated).invoke(component);
} else if (annotated instanceof Field) {
values = (List<ConfigBeanProxy>) ((Field) annotated).get(component);
} else {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.invalid_type",
"Invalid annotated type {0} passed to InjectionResolver:getValue()",
annotated.getClass().toString());
logger.log(Level.SEVERE, ConfigApiLoggerInfo.INVALID_ANNO_TYPE,
annotated.getClass().toString());
throw new MultiException(new IllegalArgumentException(msg));
}
} catch (IllegalAccessException e) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.invocation_failure",
"Failure {0} while getting List<?> values from component",
e.getMessage());
logger.log(Level.SEVERE,ConfigApiLoggerInfo.INVOKE_FAILURE);
throw new MultiException(new IllegalStateException(msg, e));
} catch (InvocationTargetException e) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.invocation_failure",
"Failure {0} while getting List<?> values from component",
e.getMessage());
logger.log(Level.SEVERE, ConfigApiLoggerInfo.INVOKE_FAILURE);
throw new MultiException(new IllegalStateException(msg, e));
}
Object value = delegate.getValue(component, annotated, genericType, type);
if (value==null) {
if (logger.isLoggable(level)) {
logger.log(level, "Value of " + annotated.toString() + " is null");
}
return null;
}
Type genericReturnType=null;
if (annotated instanceof Method) {
genericReturnType = ((Method) annotated).getGenericReturnType();
} else if (annotated instanceof Field) {
genericReturnType = ((Field) annotated).getGenericType();
}
if (genericReturnType==null) {
throw new MultiException(new IllegalArgumentException(
"Cannot determine parametized type from " + annotated.toString()));
}
final Class<? extends ConfigBeanProxy> itemType = Types.erasure(Types.getTypeArgument(genericReturnType, 0));
if (logger.isLoggable(level)) {
logger.log(level, "Found that List<?> really is a List<" + itemType.toString() + ">");
}
if (itemType==null) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.nongeneric_type",
"The List type returned by {0} must be a generic type",
annotated.toString());
logger.log(Level.SEVERE, ConfigApiLoggerInfo.LIST_NOT_GENERIC_TYPE, annotated.toString());
throw new MultiException(new IllegalArgumentException(msg));
}
if (!ConfigBeanProxy.class.isAssignableFrom(itemType)) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.wrong_type",
"The generic type {0} is not supported, only List<? extends ConfigBeanProxy> is",
annotated.toString());
logger.log(Level.SEVERE, ConfigApiLoggerInfo.GENERIC_TYPE_NOT_SUPPORTED, annotated.toString());
throw new MultiException(new IllegalArgumentException(msg));
}
Properties props = convertStringToProperties(value.toString(), ':');
if (logger.isLoggable(level)) {
for (Map.Entry<Object, Object> entry : props.entrySet()) {
logger.log(level, "Subtype " + itemType + " key:" + entry.getKey() + " value:" + entry.getValue());
}
}
final BeanInfo beanInfo;
try {
beanInfo = Introspector.getBeanInfo(itemType);
} catch (IntrospectionException e) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.introspection_failure",
"Failure {0} while instrospecting {1} to find all getters and setters",
e.getMessage(), itemType.getName());
LogHelper.log(logger, Level.SEVERE, ConfigApiLoggerInfo.INTROSPECTION_FAILED, e, itemType.getName());
throw new MultiException(new IllegalStateException(msg, e));
}
for (final Map.Entry<Object, Object> entry : props.entrySet()) {
ConfigBeanProxy child = (ConfigBeanProxy) component;
try {
ConfigBeanProxy cc = child.createChild(itemType);
new InjectionManager().inject(cc, itemType, new InjectionResolver<Attribute>(Attribute.class) {
@Override
public boolean isOptional(AnnotatedElement annotated, Attribute annotation) {
return true;
}
@Override
public Method getSetterMethod(Method annotated, Attribute annotation) {
// Attribute annotation are always annotated on the getter, we need to find the setter
// variant.
for (PropertyDescriptor pd : beanInfo.getPropertyDescriptors()) {
if (pd.getReadMethod().equals(annotated)) {
return pd.getWriteMethod();
}
}
return annotated;
}
@Override
public <V> V getValue(Object component, AnnotatedElement annotated, Type genericType, Class<V> type) throws MultiException {
String name = annotated.getAnnotation(Attribute.class).value();
if ((name==null || name.length()==0) && annotated instanceof Method) {
// maybe there is a better way to do this...
name = ((Method) annotated).getName().substring(3);
if (name.equalsIgnoreCase("name") || name.equalsIgnoreCase("key")) {
return type.cast(entry.getKey());
}
if (name.equalsIgnoreCase("value")) {
return type.cast(entry.getValue());
}
}
return null;
}
});
values.add(cc);
} catch (TransactionFailure transactionFailure) {
String msg = localStrings.getLocalString(GenericCrudCommand.class,
"GenericCrudCommand.transactionException",
"Transaction exception {0} while injecting {1}",
transactionFailure.getMessage(), itemType);
LogHelper.log(logger, Level.SEVERE, ConfigApiLoggerInfo.TX_FAILED,
transactionFailure, itemType);
throw new MultiException(new IllegalStateException(msg, transactionFailure));
}
}
return null;
}
return delegate.getValue(component, annotated, genericType, type);
}
@Override
public boolean isOptional(AnnotatedElement annotated, Param annotation) {
return annotation.optional();
}
};
}
protected Class<?> loadClass(String type) throws ClassNotFoundException {
HK2Loader loader = myself.getLoader();
if (loader == null) {
return getClass().getClassLoader().loadClass(type);
}
try {
return loader.loadClass(type);
}
catch (MultiException me) {
for (Throwable th : me.getErrors()) {
if (th instanceof ClassNotFoundException) {
throw (ClassNotFoundException) th;
}
}
throw new ClassNotFoundException(me.getMessage());
}
}
/**
* Convert a String with the following format to Properties:
* name1=value1:name2=value2:name3=value3:...
* The Properties object contains elements:
* {name1=value1, name2=value2, name3=value3, ...}
*
* @param propsString the String to convert
* @param sep the separator character
* @return Properties containing the elements in String
*/
public static Properties convertStringToProperties(String propsString, char sep) {
final Properties properties = new Properties();
if ((propsString != null)&&(!propsString.equals("[]"))) {
//This is because when there are multiple values in the arraylist
//they appear like [foo=bar:baz=baz1] so need to remove the braces
String unbracedString = propsString.substring(propsString.indexOf('[')+1);
ParamTokenizer stoken = new ParamTokenizer(unbracedString, sep);
while (stoken.hasMoreTokens()) {
String token = stoken.nextTokenKeepEscapes();
final ParamTokenizer nameTok = new ParamTokenizer(token, '=');
String name = null, value = null;
if (nameTok.hasMoreTokens())
name = nameTok.nextToken();
if (nameTok.hasMoreTokens())
value = nameTok.nextToken();
if (nameTok.hasMoreTokens() || name == null || value == null)
throw new IllegalArgumentException("TODO : i18n : Invalid property syntax." + propsString);
//strings.getLocalString("InvalidPropertySyntax",
// "Invalid property syntax.", propsString));
int index = value.indexOf(']');
String unbracedValue =index > 0 ? value.substring(0,index) : value;
properties.setProperty(name, unbracedValue);
}
}
return properties;
}
/**
* Returns the element name used by the parent to store instances of the child
*
* @param document the dom document this configuration element lives in.
* @param parent type of the parent
* @param child type of the child
* @return the element name holding child's instances in the parent
* @throws ClassNotFoundException when subclasses cannot be loaded
*/
public static String elementName(DomDocument document, Class<?> parent, Class<?> child)
throws ClassNotFoundException {
ConfigModel cm = document.buildModel(parent);
for (String elementName : cm.getElementNames()) {
ConfigModel.Property prop = cm.getElement(elementName);
if (prop instanceof ConfigModel.Node) {
ConfigModel childCM = ((ConfigModel.Node) prop).getModel();
String childTypeName = childCM.targetTypeName;
if (childTypeName.equals(child.getName())) {
return childCM.getTagName();
}
// check the inheritance hierarchy
List<ConfigModel> subChildrenModels = document.getAllModelsImplementing(
childCM.classLoaderHolder.loadClass(childTypeName));
if (subChildrenModels!=null) {
for (ConfigModel subChildModel : subChildrenModels) {
if (subChildModel.targetTypeName.equals(child.getName())) {
return subChildModel.getTagName();
}
}
}
}
}
return null;
}
/** Decorator class if particular command
*/
public abstract Class getDecoratorClass();
}