/*
 * 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 launcher;

import org.apache.tuscany.sca.node.Contribution;
import org.apache.tuscany.sca.node.Node;
import org.apache.tuscany.sca.node.NodeFactory;

import calculator.CalculatorService;

/**
 * This  program shows how to create an embedded SCA runtime, load a contribution,
 * start it and locate and invoke an SCA component from Java. 
 */
public class LaunchCalculatorContribution {
    
    /*
     * Use the Tuscany Node API to:
     *    - create a Node instance and load a contribution from the parent directory
     *    - start the node (which starts deployable composites)
     *    - get a local service proxy
     *    - make a service call using the proxy
     *    - stop the node
     */
    public static void main(String[] args) throws Exception {
        Node node = NodeFactory.newInstance().createNode(new Contribution("c1", "../calculator-contribution.jar"));
        
        node.start();
        
        CalculatorService calculator = node.getService(CalculatorService.class, "CalculatorServiceComponent");
        
        double result = calculator.add(3, 2);
        
        System.out.println("3 + 2 = " + result);
        
        if (result != 5.0){
            throw new RuntimeException("Expected 5.0 but result was " + result);
        }
        
        node.stop();
    }
    
}