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https://issues.apache.org/jira/browse/GEODE-4054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16284108#comment-16284108
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ASF GitHub Bot commented on GEODE-4054:
---------------------------------------
WireBaron commented on a change in pull request #1141: GEODE-4054: Create
module for Protobuf message-based client
URL: https://github.com/apache/geode/pull/1141#discussion_r155845793
##########
File path:
geode-protobuf-client/src/main/java/org/apache/geode/internal/cache/client/protobuf/MethodInvoker.java
##########
@@ -0,0 +1,154 @@
+/*
+ * 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.apache.geode.internal.cache.client.protobuf;
+
+import java.io.BufferedReader;
+import java.io.Reader;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+import java.util.LinkedList;
+import java.util.Queue;
+
+import org.apache.geode.annotations.Experimental;
+
+@Experimental
+public class MethodInvoker {
+ public interface Prompter {
+ void prompt();
+ }
+
+ public interface Transcriber {
+ void transcribe(String str);
+ }
+
+ private static void invoke(Queue<String> tokens, Object object, String name)
throws Throwable {
+ final Method method = findMethod(object.getClass(), name);
+ if (method == null) {
+ throw new NoSuchMethodException("Method " + name + " does not exist in "
+ object.getClass());
+ }
+
+ if (0 < method.getParameterCount()) {
+ Object[] parameters = new Object[method.getParameterCount()];
+ int index = 0;
+ for (Type type : method.getParameterTypes()) {
+ // Adjust the type to box primitive types.
+ if (boolean.class == type) {
+ type = Boolean.class;
+ } else if (byte.class == type) {
+ type = Byte.class;
+ } else if (short.class == type) {
+ type = Short.class;
+ } else if (int.class == type) {
+ type = Integer.class;
+ } else if (long.class == type) {
+ type = Long.class;
+ } else if (float.class == type) {
+ type = Float.class;
+ } else if (double.class == type) {
+ type = Double.class;
+ }
+
+ if (!tokens.isEmpty()) {
+ final String parameter = tokens.remove();
+ try {
+ Constructor constructor = ((Class)
type).getConstructor(String.class);
+ parameters[index++] = constructor.newInstance(parameter);
+ } catch (IllegalAccessException | InstantiationException |
NoSuchMethodException e) {
+ e.printStackTrace(System.err);
+ parameters[index++] = parameter;
+ } catch (InvocationTargetException e) {
+ throw e.getTargetException();
+ }
+ } else {
+ parameters[index++] = null;
+ }
+ }
+ try {
+ method.invoke(object, parameters);
+ } catch (IllegalAccessException e) {
+ e.printStackTrace(System.err);
+ } catch (InvocationTargetException e) {
+ throw e.getTargetException();
+ }
+ } else {
+ try {
+ method.invoke(object);
+ } catch (IllegalAccessException e) {
+ e.printStackTrace(System.err);
+ } catch (InvocationTargetException e) {
+ throw e.getTargetException();
+ }
+ }
+ }
+
+ private static Method findMethod(Class clazz, String name) {
Review comment:
This seems a bit flimsy as it's valid (and not uncommon) for multiple
methods to have the same name.
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> Create module for Protobuf message-based client
> -----------------------------------------------
>
> Key: GEODE-4054
> URL: https://issues.apache.org/jira/browse/GEODE-4054
> Project: Geode
> Issue Type: Improvement
> Components: client/server
> Reporter: Michael Dodge
> Fix For: 1.4.0
>
>
> Create a module, geode-protobuf-client, that contains a simple Java client
> that exercises the Protobuf messages and the new protocol. This client should
> allow the interaction with a locator and cache server based on command-line
> arguments, a file of commands, or an interactive shell.
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