2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
21 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 * ============LICENSE_END=========================================================
25 package org.openecomp.appc.client.lcm.impl.business;
27 import org.openecomp.appc.RPC;
28 import org.openecomp.appc.client.lcm.api.ResponseHandler;
29 import org.openecomp.appc.client.lcm.exceptions.AppcClientBusinessException;
30 import org.openecomp.appc.client.lcm.exceptions.AppcClientException;
31 import org.openecomp.appc.client.lcm.exceptions.AppcClientInternalException;
33 import java.lang.reflect.InvocationHandler;
34 import java.lang.reflect.Method;
36 class RPCInvocator implements InvocationHandler {
38 private final LCMRequestProcessor lcmRequestProcessor;
40 RPCInvocator(LCMRequestProcessor lcmRequestProcessor) {
41 this.lcmRequestProcessor = lcmRequestProcessor;
45 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
46 if (isLCMRequest(method)) {
48 return invokeImpl(method, args);
50 catch (AppcClientInternalException | AppcClientBusinessException e) {
51 throw new AppcClientException(e);
54 // Delegate non-RPC Object's methods (hashCode/equals/etc) to the proxy instance itself
55 return method.invoke(proxy, args);
59 private <T> T invokeImpl(Method method, Object[] args) throws AppcClientInternalException, AppcClientBusinessException {
60 Object rpcInput = args[0];
61 RPC annotation = method.getAnnotation(RPC.class);
62 String rpcName = annotation.name();
63 @SuppressWarnings("unchecked")
64 Class<T> rpcOutputType = (Class<T>) annotation.outputType();
67 if (isAsync(method)) {
68 @SuppressWarnings("unchecked")
69 ResponseHandler<T> handler = (ResponseHandler<T>) args[1];
70 lcmRequestProcessor.processAsync(rpcInput, rpcName, rpcOutputType, handler);
73 result = lcmRequestProcessor.processSync(rpcInput, rpcName, rpcOutputType);
78 private boolean isLCMRequest(Method method) {
79 return method.isAnnotationPresent(RPC.class);
82 private boolean isAsync(Method method) {
83 return method.getReturnType().equals(Void.TYPE);