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ide/ide.remote/src/org/netbeans/modules/remote/RemoteInvocation.java
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.netbeans.modules.remote; | ||
|
|
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| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.lang.reflect.InvocationHandler; | ||
| import java.lang.reflect.Method; | ||
| import java.lang.reflect.Proxy; | ||
| import java.lang.reflect.Type; | ||
| import java.util.Arrays; | ||
| import java.util.Map; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import java.util.stream.Collectors; | ||
| import org.netbeans.modules.remote.AsynchronousConnection.ReceiverBuilder; | ||
| import org.netbeans.modules.remote.AsynchronousConnection.Sender; | ||
|
|
||
| /** | ||
| * | ||
| */ | ||
| public class RemoteInvocation { | ||
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|
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| public static <T> T caller(InputStream in, OutputStream out, Class<T> intf) { | ||
| Sender sender = new Sender(in, out); | ||
| return (T) Proxy.newProxyInstance(RemoteInvocation.class.getClassLoader(), new Class<?>[] {intf}, new InvocationHandler() { | ||
| @Override | ||
| public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { | ||
| String[] encodedParams; | ||
|
|
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| if (args == null) { | ||
| encodedParams = new String[0]; | ||
| } else { | ||
| encodedParams = Arrays.stream(args) | ||
| .map(Utils.gson::toJson) | ||
| .toArray(s -> new String[s]); | ||
| } | ||
|
|
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| InvocationData data = new InvocationData(encodeMethod(method), encodedParams); | ||
| Type returnType = method.getGenericReturnType(); | ||
| if (returnType == void.class) { | ||
| returnType = Void.class; | ||
| } | ||
| return sender.sendAndReceive(Task.INVOKE, data, returnType).get(); | ||
| } | ||
| }); | ||
| } | ||
|
|
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| public static void receiver(InputStream in, OutputStream out, Object delegate) { | ||
| Map<String, Method> encodedMethod2Method = Arrays.stream(delegate.getClass().getMethods()).collect(Collectors.toMap(m -> encodeMethod(m), m -> m)); | ||
|
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| new ReceiverBuilder<>(in, out, Task.class) | ||
| .addHandler(Task.INVOKE, InvocationData.class, data -> { | ||
| CompletableFuture<Object> result = new CompletableFuture<>(); | ||
| try { | ||
| Object[] args = new Object[data.parameters.length]; | ||
| Method toInvoke = encodedMethod2Method.get(data.methodNameAndSignature); | ||
| Type[] parameterTypes = toInvoke.getGenericParameterTypes(); | ||
| for (int i = 0; i < parameterTypes.length; i++) { | ||
| args[i] = Utils.gson.fromJson(data.parameters[i], parameterTypes[i]); | ||
| } | ||
| toInvoke.setAccessible(true); | ||
| result.complete(toInvoke.invoke(delegate, args)); | ||
| } catch (Throwable t) { | ||
| result.completeExceptionally(t); | ||
| } | ||
| return result; | ||
| }) | ||
| .startReceiver(); | ||
| } | ||
|
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| public static RuntimeException sneakyThrows(Throwable t) { | ||
| return doSneakyThrows(t); | ||
| } | ||
|
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| @SuppressWarnings("unchecked") | ||
| private static <T extends Throwable> RuntimeException doSneakyThrows(Throwable t) throws T { | ||
| throw (T) t; | ||
| } | ||
|
|
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| public enum Task { | ||
| INVOKE; | ||
| } | ||
|
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| public static final class InvocationData { | ||
| public String methodNameAndSignature; | ||
| public String[] parameters; | ||
|
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| public InvocationData() { | ||
| } | ||
|
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| public InvocationData(String methodNameAndSignature, String[] parameters) { | ||
| this.methodNameAndSignature = methodNameAndSignature; | ||
| this.parameters = parameters; | ||
| } | ||
|
|
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| } | ||
|
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| private static String encodeMethod(Method m) { | ||
| StringBuilder result = new StringBuilder(); | ||
| result.append(m.getName()); | ||
| result.append("("); | ||
| for (Class<?> p : m.getParameterTypes()) { | ||
| result.append(p.getCanonicalName()).append(";"); | ||
| } | ||
| result.append(")"); | ||
| return result.toString(); | ||
| } | ||
| } |
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