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Embedded-Web Distribution of the Payara Project
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) [2019-2021] Payara Foundation and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://github.com/payara/Payara/blob/master/LICENSE.txt
* See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
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*/
package fish.payara.ejb.http.client;
import fish.payara.ejb.http.protocol.ErrorResponse;
import fish.payara.ejb.http.protocol.InvokeMethodRequest;
import fish.payara.ejb.http.protocol.InvokeMethodResponse;
import fish.payara.ejb.http.protocol.MediaTypes;
import fish.payara.ejb.http.protocol.rs.InvokeMethodResponseJsonBodyReader;
import jakarta.ws.rs.client.Entity;
import jakarta.ws.rs.client.WebTarget;
import jakarta.ws.rs.core.Response;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.UndeclaredThrowableException;
import java.util.Map;
import static java.util.Arrays.asList;
import static javax.naming.Context.SECURITY_CREDENTIALS;
import static javax.naming.Context.SECURITY_PRINCIPAL;
final class EjbHttpProxyHandlerV1 implements InvocationHandler {
private final String mediaType;
private final WebTarget invoke;
private final String jndiName;
private final Map jndiOptions;
public EjbHttpProxyHandlerV1(String mediaType, WebTarget invoke, String jndiName, Map jndiOptions) {
this.jndiName = jndiName;
this.jndiOptions = jndiOptions;
this.invoke = mediaType.equals(MediaTypes.JSON) ? invoke.register(InvokeMethodResponseJsonBodyReader.class) : invoke;
this.mediaType = mediaType;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
// Check for methods we should not proxy first
if (args == null && method.getName().equals("toString")) {
return toString();
}
if (args == null && method.getName().equals("hashCode")) {
// unique instance in the JVM, and no need to override
return hashCode();
}
if (args != null && args.length == 1 && method.getName().equals("equals")) {
// unique instance in the JVM, and no need to override
return equals(args[0]);
}
return invokeRemote(method, args);
}
private Object invokeRemote(Method method, Object[] args) throws Exception {
InvokeMethodRequest request = createRequest(method, args);
try (Response response = invoke
.request(mediaType)
.buildPost(Entity.entity(request, mediaType)).invoke()) {
if (response.getStatus() == Response.Status.OK.getStatusCode()) {
return response
.readEntity(InvokeMethodResponse.class, InvokeMethodResponse.ResultType.of(method)).result;
}
ErrorResponse error = response.readEntity(ErrorResponse.class);
throw LookupV1.deserialise(error);
}
}
private InvokeMethodRequest createRequest(Method method, Object[] args) {
String principal = jndiOptions.containsKey(SECURITY_PRINCIPAL)
? Lookup.base64Encode(jndiOptions.get(SECURITY_PRINCIPAL))
: "";
String credentials = jndiOptions.containsKey(SECURITY_CREDENTIALS)
? Lookup.base64Encode(jndiOptions.get(SECURITY_CREDENTIALS))
: "";
String[] argTypes = asList(method.getParameterTypes()).stream()
.map(type -> type.getName())
.toArray(String[]::new);
String[] argActualTypes = args == null ? new String[0] : asList(args).stream()
.map(arg -> arg == null ? null : arg.getClass().getName())
.toArray(String[]::new);
for (int i = 0; i < argTypes.length; i++) {
if (argActualTypes[i] == null) {
argActualTypes[i] = argTypes[i];
}
}
return new InvokeMethodRequest(principal, credentials, jndiName, method.getName(), argTypes, argActualTypes,
packArguments(args), null);
}
private Object packArguments(Object[] args) {
Object argValues = args;
if (MediaTypes.JAVA_OBJECT.equals(mediaType)) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try (ObjectOutputStream oos = new ObjectOutputStream(bos)) {
oos.writeObject(argValues);
} catch (IOException e) {
throw new UndeclaredThrowableException(e);
}
argValues = bos.toByteArray();
}
return argValues;
}
}