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/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* or .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.web.jersey.proxy;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.concurrent.ConcurrentHashMap;
import javax.ws.rs.Path;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import org.smallmind.scribe.pen.Level;
import org.smallmind.web.jersey.aop.Argument;
import org.smallmind.web.jersey.aop.EntityParam;
import org.smallmind.web.jersey.aop.Envelope;
public class JsonEntityInvocationHandler implements InvocationHandler {
private final ConcurrentHashMap, XmlAdapter> xmlAdapterMap = new ConcurrentHashMap<>();
private final ConcurrentHashMap jsonArgumentMap = new ConcurrentHashMap<>();
private final Level level;
private final JsonTarget target;
private final JsonHeaderInjector[] headerInjectors;
private final String serviceName;
private final String basePath;
private final int serviceVersion;
public JsonEntityInvocationHandler (JsonTarget target, String versionPrefix, int serviceVersion, String serviceName, Level level, JsonHeaderInjector... headerInjectors) {
this.target = target;
this.serviceVersion = serviceVersion;
this.serviceName = serviceName;
this.level = level;
this.headerInjectors = headerInjectors;
basePath = "/" + versionPrefix + serviceVersion + '/' + serviceName;
}
@Override
public Object invoke (Object proxy, Method method, Object[] args) throws Throwable {
JsonTarget rectifiedTarget;
Path pathAnnotation = method.getAnnotation(Path.class);
JsonArgument[] jsonArguments;
Argument[] arguments;
if ((jsonArguments = jsonArgumentMap.get(method)) == null) {
synchronized (jsonArgumentMap) {
if ((jsonArguments = jsonArgumentMap.get(method)) == null) {
jsonArgumentMap.put(method, jsonArguments = constructJsonArguments(method));
}
}
}
arguments = new Argument[args.length];
for (int index = 0; index < args.length; index++) {
arguments[index] = new Argument(jsonArguments[index].getName(), (jsonArguments[index].getXmlAdapter() != null) ? jsonArguments[index].getXmlAdapter().marshal(args[index]) : args[index]);
}
rectifiedTarget = target.path(basePath + ((pathAnnotation != null) ? pathAnnotation.value() : '/' + method.getName()));
if (headerInjectors != null) {
for (JsonHeaderInjector headerInjector : headerInjectors) {
JsonHeader header;
if ((header = headerInjector.injectOnInvoke(proxy, method, args)) != null) {
rectifiedTarget.header(header.getKey(), header.getValue());
}
}
}
return rectifiedTarget.debug(level).post(new JsonHttpEntity(new Envelope(arguments)), method.getReturnType());
}
private JsonArgument[] constructJsonArguments (Method method)
throws ResourceDefinitionException, IllegalAccessException, InstantiationException {
JsonArgument[] jsonArguments = new JsonArgument[method.getParameterTypes().length];
int index = 0;
for (Annotation[] parameterAnnotations : method.getParameterAnnotations()) {
String name = null;
XmlAdapter xmlAdapter = null;
for (Annotation annotation : parameterAnnotations) {
if (annotation.annotationType().equals(EntityParam.class)) {
name = ((EntityParam)annotation).value();
}
if (annotation.annotationType().equals(XmlJavaTypeAdapter.class)) {
if ((xmlAdapter = xmlAdapterMap.get(((XmlJavaTypeAdapter)annotation).value())) == null) {
synchronized (xmlAdapterMap) {
if ((xmlAdapter = xmlAdapterMap.get(((XmlJavaTypeAdapter)annotation).value())) == null) {
xmlAdapterMap.put(((XmlJavaTypeAdapter)annotation).value(), xmlAdapter = ((XmlJavaTypeAdapter)annotation).value().newInstance());
}
}
}
}
}
if (name == null) {
throw new ResourceDefinitionException("The method(%s) of resource interface(%s) version(%d) requires @EntityParameter annotations", method.getName(), serviceName, serviceVersion);
}
jsonArguments[index++] = new JsonArgument(name, xmlAdapter);
}
return jsonArguments;
}
}
