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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.apache.tuscany.sca.shell.commands;
import static java.lang.System.out;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import jline.Completor;
import jline.NullCompletor;
import org.apache.tuscany.sca.shell.Command;
import org.apache.tuscany.sca.shell.Shell;
import org.apache.tuscany.sca.shell.jline.ServiceCompletor;
import org.apache.tuscany.sca.shell.jline.ServiceOperationCompletor;
public class Invoke implements Command {
private Shell shell;
public Invoke(Shell shell) {
this.shell = shell;
}
@Override
public String getName() {
return "invoke";
}
@Override
public String getShortHelp() {
return "invoke <component>[/<service>] <operation> [<arg0> <arg1> ...]";
}
@Override
public String getHelp() {
StringBuilder helpText = new StringBuilder();
helpText.append(" Invokes an operation of a component service.\n");
helpText.append(" (presently parameters are limited to simple types)\n");
helpText.append("\n");
helpText.append(" Arguments:\n");
helpText.append(" component - (required) the name of the component\n");
helpText.append(" service - (optional) the name of the component service, which may be omitted\n");
helpText.append(" when the component has a single service.\n");
helpText.append(" operation - (required) the name of the operation\n");
helpText.append(" args - (optional) the operation arguments\n");
return helpText.toString();
}
@Override
public Completor[] getCompletors() {
return new Completor[]{new ServiceCompletor(shell), new ServiceOperationCompletor(shell), new NullCompletor()};
}
@Override
public boolean invoke(String[] args) throws Exception {
if (args.length < 2) {
System.err.println("Wrong number of args");
System.err.println(getShortHelp());
return true;
}
String endpointName = args[0];
String operationName = args[1];
String params[] = new String[args.length - 2];
System.arraycopy(args, 2, params, 0, params.length);
Object proxy = shell.getNode().getService(null, endpointName);
invoke(proxy, operationName, params);
return true;
}
static void invoke(Object proxy, String operationName, String... params) throws IllegalAccessException, InvocationTargetException {
Method foundMethod = null;
for (Method m : proxy.getClass().getMethods()) {
if (m.getName().equals(operationName)) {
if (m.getParameterTypes().length == params.length) {
Object parameters[] = new Object[params.length];
int i = 0;
for (Class<?> type : m.getParameterTypes()) {
if (type == byte.class || type == Byte.class) {
parameters[i] = Byte.valueOf(params[i]);
} else if (type == char.class || type == Character.class) {
parameters[i] = params[i].charAt(0);
} else if (type == boolean.class || type == Boolean.class) {
parameters[i] = Boolean.valueOf(params[i]);
} else if (type == short.class || type == Short.class) {
parameters[i] = Short.valueOf(params[i]);
} else if (type == int.class || type == Integer.class) {
parameters[i] = Integer.valueOf(params[i]);
} else if (type == long.class || type == Long.class) {
parameters[i] = Long.valueOf(params[i]);
} else if (type == float.class || type == Float.class) {
parameters[i] = Float.valueOf(params[i]);
} else if (type == double.class || type == Double.class) {
parameters[i] = Double.valueOf(params[i]);
} else if (type == String.class) {
parameters[i] = params[i];
} else {
throw new IllegalArgumentException("Parameter type is not supported: " + type);
}
i++;
}
Object result = m.invoke(proxy, parameters);
if (result != null && result.getClass().isArray()) {
out.println(Arrays.toString((Object[])result));
} else {
out.println(result);
}
return;
} else {
foundMethod = m;
}
}
}
if (foundMethod != null) {
System.err.println("Service operation " + foundMethod.getName() + " expects " + foundMethod.getParameterTypes().length + " arguments");
} else {
System.err.println("Operation not found: " + operationName);
}
}
}
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