org.wildfly.swarm.config.runtime.invocation.EntityAdapter Maven / Gradle / Ivy
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package org.wildfly.swarm.config.runtime.invocation;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
import org.jboss.dmr.ValueExpression;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.Index;
import org.jboss.jandex.MethodInfo;
import org.wildfly.config.model.NoopContext;
import org.wildfly.swarm.config.runtime.Address;
import org.wildfly.swarm.config.runtime.ModelNodeBinding;
import org.wildfly.swarm.config.runtime.model.AddressTemplate;
import org.wildfly.swarm.config.runtime.model.StatementContext;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.ADDRESS;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.COMPOSITE;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.NAME;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.OP_ADDR;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.STEPS;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.VALUE;
import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.WRITE_ATTRIBUTE_OPERATION;
/**
* Adopts DMR to Entity T and vice versa.
*/
public class EntityAdapter {
private Class type;
private Index index;
private static final StatementContext NOOP_CTX = new NoopContext();
public EntityAdapter(Class type) {
this.type = type;
this.index = IndexFactory.createIndex(type);
}
private Class getType() {
return type;
}
public Index getIndex() {
return index;
}
/**
* Determine if this is an EntityAdapter for a one of the supported ModelNode
* base classes (String, Long, BigDecimal, etc).
*
* @return true if this is a base class EntityAdapter, false otherwise.
*/
public boolean isBaseTypeAdapter() {
return isBaseType(getType());
}
/**
* Is the given class one of the supported ModelNode base classes (String, Long, BigDecimal, etc.)
*
* @param clazz The class to be tested.
* @return true if the given class is a base class, false otherwise.
*/
public boolean isBaseType(Class clazz) {
return (clazz == String.class) ||
(clazz == Long.class) ||
(clazz == Integer.class) ||
(clazz == Boolean.class) ||
(clazz == Double.class) ||
(clazz == BigDecimal.class) ||
(clazz == byte[].class);
}
@SuppressWarnings("unchecked")
private T convertToBaseType(ModelNode dmr) {
if (getType() == String.class) return (T) dmr.asString();
if (getType() == Long.class) return (T) Long.valueOf(dmr.asLong());
if (getType() == Integer.class) return (T) Integer.valueOf(dmr.asInt());
if (getType() == Boolean.class) return (T) Boolean.valueOf(dmr.asBoolean());
if (getType() == Double.class) return (T) Double.valueOf(dmr.asDouble());
if (getType() == BigDecimal.class) return (T) BigDecimal.valueOf(dmr.asDouble());
if (getType() == byte[].class) return (T) dmr.asBytes();
throw new IllegalArgumentException("Can not convert. This node is not of a base type. Actual type is " + type.getName());
}
/**
* Converts a DMR {@link ModelNode} to a java entity of type T.
*
* @param modelNode a ModelNode
* @return an entity representation of type T
*/
@SuppressWarnings("unchecked")
public T fromDMR(String keyValue, ModelNode modelNode) throws Exception {
if (isBaseTypeAdapter()) return convertToBaseType(modelNode);
ModelNode actualPayload = null;
if (ModelType.OBJECT.equals(modelNode.getType())) {
actualPayload = modelNode;
}
/* else if(ModelType.PROPERTY.equals(modelNode.getType()))
{
final Property property = modelNode.asProperty();
actualPayload = property.getValue();
}*/
else {
throw new IllegalArgumentException("Unsupported ModelType " + modelNode.getType() + ": " + modelNode);
}
ClassInfo clazz = index.getClassByName(DotName.createSimple(getType().getCanonicalName()));
T entity = null;
boolean implicitKey = clazz.annotations().containsKey(IndexFactory.IMPLICIT_META);
if (implicitKey) {
// implicit (aka singleton) resource
Constructor ctor = getType().getConstructor();
entity = (T) ctor.newInstance();
} else {
// explicit (regular) resource
entity = (T) getType().getConstructor(String.class)
.newInstance(keyValue);
}
for (MethodInfo method : clazz.methods()) {
if (method.hasAnnotation(IndexFactory.BINDING_META)) {
Method getter = entity.getClass().getMethod(method.name());
Class propertyType = getter.getReturnType();
ModelNodeBinding binding = getter.getDeclaredAnnotation(ModelNodeBinding.class);
String detypedName = binding.detypedName();
ModelNode dmrPayload = actualPayload.get(detypedName);
// EXPRESSIONS
if(ModelType.EXPRESSION == dmrPayload.getType()) {
ValueExpression expression = dmrPayload.asExpression();
((Map)entity).put(method.name(), expression.getExpressionString());
continue; // expression have precedence over real values
}
// VALUES
ModelType dmrType = Types.resolveModelType(propertyType);
if (dmrType == ModelType.LIST) {
new ListTypeAdapter().fromDmr(entity, method.name(), dmrType, propertyType, dmrPayload);
} else if (dmrType == ModelType.OBJECT) {
new MapTypeAdapter().fromDmr(entity, method.name(), dmrType, propertyType, dmrPayload);
} else {
new SimpleTypeAdapter().fromDmr(entity, method.name(), dmrType, propertyType, dmrPayload);
}
}
}
return entity;
}
/**
* Turns a changeset into a composite write attribute operation.
* The keys to the changeset are the java property names of the attributes that have been modified.
*
* @param changeSet values of the java properties that changed
* @return composite operation
*/
public ModelNode fromChangeset(Map changeSet, String... wildcards) {
ClassInfo clazz = null;
Class currentType = getType();
while (clazz == null) {
clazz = index.getClassByName(DotName.createSimple(currentType.getCanonicalName()));
if (clazz == null) {
currentType = currentType.getSuperclass();
if (currentType == null) {
throw new RuntimeException("Unable to determine ClassInfo");
}
}
}
Address addressMeta = currentType.getDeclaredAnnotation(Address.class);
AddressTemplate address = AddressTemplate.of(addressMeta.value());
ModelNode protoType = new ModelNode();
protoType.get(ADDRESS).set(address.resolve(NOOP_CTX, wildcards));
protoType.get(OP).set(WRITE_ATTRIBUTE_OPERATION);
ModelNode operation = new ModelNode();
operation.get(OP).set(COMPOSITE);
operation.get(ADDRESS).setEmptyList();
List steps = new ArrayList();
for (MethodInfo method : clazz.methods()) {
if (method.hasAnnotation(IndexFactory.BINDING_META)) {
try {
Method target = currentType.getMethod(method.name());
Class propertyType = target.getReturnType();
ModelNodeBinding binding = target.getDeclaredAnnotation(ModelNodeBinding.class);
String detypedName = binding.detypedName();
String javaPropName = method.name(); // in our case it's same as the method name
Object value = changeSet.get(javaPropName);
if (value == null) continue;
ModelNode step = protoType.clone();
step.get(NAME).set(javaPropName);
ModelNode modelNode = step.get(VALUE);
try {
ModelType dmrType = Types.resolveModelType(propertyType);
if (dmrType == ModelType.LIST) {
new ListTypeAdapter().toDmr(modelNode, detypedName, (List) value);
} else if (dmrType == ModelType.OBJECT) {
// only Map supported
new MapTypeAdapter().toDmr(modelNode, detypedName, (Map) value);
} else {
new SimpleTypeAdapter().toDmr(modelNode, detypedName, dmrType, value);
}
} catch (RuntimeException e) {
throw new RuntimeException("Failed to adopt value " + propertyType.getName(), e);
}
steps.add(step);
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
}
}
operation.get(STEPS).set(steps);
return operation;
}
/**
* Converts an entity of type T into a DMR {@link ModelNode}
*
* @param entity
* @return ModelNode
*/
@SuppressWarnings("unchecked")
public ModelNode fromEntity(T entity) throws Exception {
return fromEntity(entity, new ModelNode());
}
public ModelNode fromEntity(T entity, ModelNode modelNode) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
ModelNode addr = modelNode.get(OP_ADDR);
if (addr.getType().equals(ModelType.LIST)) {
if ( addr.asList().size() == 1 ) {
ModelNode node = addr.get(0);
if ( node.getType().equals(ModelType.PROPERTY) ) {
if ( node.asProperty().getName().equals( "core-service" ) ) {
return null;
}
}
}
}
ClassInfo clazz = null;
Class currentType = getType();
while (clazz == null) {
clazz = index.getClassByName(DotName.createSimple(currentType.getCanonicalName()));
if (clazz == null) {
currentType = currentType.getSuperclass();
if (currentType == null) {
throw new RuntimeException("Unable to determine ClassInfo");
}
}
}
while (clazz != null) {
for (MethodInfo method : clazz.methods()) {
if (method.hasAnnotation(IndexFactory.BINDING_META)) {
Method target = entity.getClass().getMethod(method.name());
Class propertyType = target.getReturnType();
Object propertyValue = target.invoke(entity);
AnnotationInstance ann = method.annotation(DotName.createSimple(ModelNodeBinding.class.getName()));
org.jboss.jandex.AnnotationValue annValue = ann.value("detypedName");
String detypedName = annValue.asString();
// EXPRESSIONS
if(entity instanceof Map) {
Map expr = (Map) entity;
if (!expr.isEmpty()) {
if(expr.keySet().contains(method.name())) {
modelNode.get(detypedName).setExpression(expr.get(method.name()));
continue; // expressions have precedence over values
}
}
}
// VALUES
if (propertyValue != null) {
try {
ModelType dmrType = Types.resolveModelType(propertyType);
if (dmrType == ModelType.LIST) {
new ListTypeAdapter().toDmr(modelNode, detypedName, (List) propertyValue);
} else if (dmrType == ModelType.OBJECT) {
// only Map supported
new MapTypeAdapter().toDmr(modelNode, detypedName, (Map) propertyValue);
} else {
new SimpleTypeAdapter().toDmr(modelNode, detypedName, dmrType, propertyValue);
}
} catch (RuntimeException e) {
throw new RuntimeException("Failed to adopt value " + propertyType.getName(), e);
}
}
}
}
if (currentType.getSuperclass() != null) {
currentType = currentType.getSuperclass();
if (currentType.equals(Object.class)) {
break;
}
}
clazz = index.getClassByName(DotName.createSimple(currentType.getCanonicalName()));
}
return modelNode;
}
}
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