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Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/node-launcher/src/main/java/org/apache/tuscany/sca/node/launcher/NodeLauncher.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/node-launcher/src/main/java/org/apache/tuscany/sca/node/launcher/NodeLauncher.java | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/node-launcher/src/main/java/org/apache/tuscany/sca/node/launcher/NodeLauncher.java b/sca-java-2.x/tags/2.0.1-RC1/modules/node-launcher/src/main/java/org/apache/tuscany/sca/node/launcher/NodeLauncher.java new file mode 100644 index 0000000000..36fa9e6a21 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/node-launcher/src/main/java/org/apache/tuscany/sca/node/launcher/NodeLauncher.java @@ -0,0 +1,364 @@ +/* + * 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.node.launcher; + +import static org.apache.tuscany.sca.node.launcher.NodeLauncherUtil.node; + +import java.io.File; +import java.io.IOException; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.net.MalformedURLException; +import java.net.URL; +import java.util.List; +import java.util.logging.Level; +import java.util.logging.Logger; + +import org.apache.commons.cli.CommandLine; +import org.apache.commons.cli.CommandLineParser; +import org.apache.commons.cli.HelpFormatter; +import org.apache.commons.cli.Option; +import org.apache.commons.cli.Options; +import org.apache.commons.cli.PosixParser; + +/** + * A launcher for SCA nodes in JSE. + * + * Agruments: + * [-c <compositeURI>]: The composite URI + * [-t <ttl>]: Time to live in milliseconds before the node is started + * contribution1 ... contributionN: A list of contribution files or URLs + * + * @version $Rev$ $Date$ + */ +public class NodeLauncher { + + static final Logger logger = Logger.getLogger(NodeLauncher.class.getName()); + + /** + * Constructs a new node launcher. + */ + private NodeLauncher() { + } + + /** + * Returns a new launcher instance. + * + * @return a new launcher instance + */ + public static NodeLauncher newInstance() { + return new NodeLauncher(); + } + + /** + * Creates a new SCA node from the configuration URL + * + * @param configurationURL the URL of the node configuration which is the ATOM feed + * that contains the URI of the composite and a collection of URLs for the contributions + * + * @return a new SCA node. + * @throws LauncherException + */ + public <T> T createNodeFromURL(String configurationURL) throws LauncherException { + return (T)node(configurationURL, null, null, null, null); + } + + /** + * Creates a new SCA Node. + * + * @param compositeURI the URI of the composite to use + * @param contributions the URI of the contributions that provides the composites and related + * artifacts. If the list is empty, then we will use the thread context classloader to discover + * the contribution on the classpath + * + * @return a new SCA node. + * @throws LauncherException + */ + public <T> T createNode(String compositeURI, Contribution...contributions) throws LauncherException { + return (T)node(null, compositeURI, null, contributions, null); + } + + /** + * Creates a new SCA Node. + * + * @param compositeURI the URI of the composite to use + * @param compositeContent the XML content of the composite to use + * @param contributions the URI of the contributions that provides the composites and related artifacts + * @return a new SCA node. + * @throws LauncherException + */ + public <T> T createNode(String compositeURI, String compositeContent, Contribution...contributions) throws LauncherException { + return (T)node(null, compositeURI, compositeContent, contributions, null); + } + + /** + * Create a SCA node based on the discovery of the contribution on the classpath for the + * given classloader. This method should be treated a convenient shortcut with the following + * assumptions: + * <ul> + * <li>This is a standalone application and there is a deployable composite file on the classpath. + * <li>There is only one contribution which contains the deployable composite file physically in its packaging hierarchy. + * </ul> + * + * @param compositeURI The URI of the composite file relative to the root of the enclosing contribution + * @param classLoader The ClassLoader used to load the composite file as a resource. If the value is null, + * then thread context classloader will be used + * @return A newly created SCA node + */ + public <T> T createNodeFromClassLoader(String compositeURI, ClassLoader classLoader) throws LauncherException { + return (T)node(null, compositeURI, null, null, classLoader); + } + + static Options getCommandLineOptions() { + Options options = new Options(); + Option opt1 = new Option("c", "composite", true, "URI for the composite"); + opt1.setArgName("compositeURI"); + options.addOption(opt1); + Option opt2 = new Option("n", "node", true, "URI for the node configuration"); + opt2.setArgName("nodeConfigurationURI"); + options.addOption(opt2); + Option opt3 = new Option("t", "ttl", true, "Time to live"); + opt3.setArgName("timeToLiveInMilliseconds"); + options.addOption(opt3); + Option opt4 = new Option("s", "service", true, "Service to invoke (componentName/serviceName#operation(arg0,...,argN)"); + options.addOption(opt4); + return options; + } + + public static void main(String[] args) throws Exception { + CommandLineParser parser = new PosixParser(); + Options options = getCommandLineOptions(); + CommandLine cli = parser.parse(options, args); + + Object node = null; + ShutdownThread shutdown = null; + try { + while (true) { + if (cli.hasOption("node")) { + + // Create a node from a configuration URI + String configurationURI = cli.getOptionValue("node"); + logger.info("SCA Node configuration: " + configurationURI); + // Create a node launcher + NodeLauncher launcher = newInstance(); + node = launcher.createNodeFromURL(configurationURI); + } else { + + // Create a node from a composite URI and a contribution location + String compositeURI = cli.getOptionValue("composite"); + List<String> contribs = cli.getArgList(); + Contribution[] contributions = null; + if (!contribs.isEmpty()) { + contributions = new Contribution[contribs.size()]; + int index = 0; + for (String contrib : contribs) { + logger.info("SCA contribution: " + contrib); + URL url = null; + try { + url = new URL(contrib); + } catch(MalformedURLException e) { + url = new File(contrib).toURI().toURL(); + } + contributions[index] = new Contribution("contribution-" + index, url.toString()); + index++; + } + } else { + HelpFormatter formatter = new HelpFormatter(); + formatter.setSyntaxPrefix("Usage: "); + formatter.printHelp("java " + NodeLauncher.class.getName() + + " [-c <compositeURI>]" + + " [-s <service>]" + + " [-t <ttl>]" + + " contribution1 ... contributionN", options); return; + } + // Create a node launcher + logger.info("SCA composite: " + compositeURI); + NodeLauncher launcher = newInstance(); + + node = launcher.createNode(compositeURI, contributions); + } + + logger.info("Apache Tuscany SCA Node is starting..."); + + // Start the node + try { + node.getClass().getMethod("start").invoke(node); + } catch (Exception e) { + logger.log(Level.SEVERE, "SCA Node could not be started", e); + throw e; + } + logger.info("SCA Node is now started."); + + String service = cli.getOptionValue("service"); + String regex = "(#|\\(|,|\\))"; + if (service != null) { + // componentName/serviceName/bindingName#methodName(arg0, ..., agrN) + String tokens[] = service.split(regex); + String serviceName = tokens[0]; + String operationName = tokens[1]; + String params[] = new String[tokens.length - 2]; + System.arraycopy(tokens, 2, params, 0, params.length); + logger.info("Invoking service: " + service); + Method method = node.getClass().getMethod("getService", Class.class, String.class); + Object proxy = method.invoke(node, null, serviceName); + + Object result = invoke(proxy, operationName, params); + if (result != null) { + logger.info("Result is: " + result); + } + break; + } + + // Install a shutdown hook + shutdown = new ShutdownThread(node); + Runtime.getRuntime().addShutdownHook(shutdown); + + long ttl = Long.parseLong(cli.getOptionValue("ttl", "-1")); + if (ttl >= 0) { + logger.info("Waiting for " + ttl + " milliseconds ..."); + Thread.sleep(ttl); + // Stop the node + if (node != null) { + Object n = node; + node = null; + stopNode(n); + } + break; // Exit + } + + logger.info("Press 'q' to quit, 'r' to restart."); + int k = 0; + try { + while ((k != 'q') && (k != 'r')) { + k = System.in.read(); + } + } catch (IOException e) { + + // Wait forever + Object lock = new Object(); + synchronized(lock) { + lock.wait(); + } + } + + // Stop the node + if (node != null) { + Object n = node; + node = null; + stopNode(n); + } + + // Quit + if (k == 'q' ) { + break; + } + } + } catch (Exception e) { + // Stop the node + if (node != null) { + try { + Object n = node; + node = null; + stopNode(n); + } catch (Exception e2) { + } + } + throw e; + + } finally { + + // Remove the shutdown hook + if (shutdown != null) { + Runtime.getRuntime().removeShutdownHook(shutdown); + } + } + } + + static Object invoke(Object proxy, String operationName, String... params) throws IllegalAccessException, + InvocationTargetException { + for (Method m : proxy.getClass().getMethods()) { + if (m.getName().equals(operationName) && 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); + return result; + } + } + throw new IllegalArgumentException("Invalid service operation: " + operationName); + } + + /** + * Stop the given node. + * + * @param node + * @throws Exception + */ + private static void stopNode(Object node) throws Exception { + try { + node.getClass().getMethod("stop").invoke(node); + logger.info("SCA Node is now stopped."); + } catch (Exception e) { + logger.log(Level.SEVERE, "SCA Node could not be stopped", e); + throw e; + } + } + + private static class ShutdownThread extends Thread { + private Object node; + + public ShutdownThread(Object node) { + super(); + this.node = node; + } + + @Override + public void run() { + try { + stopNode(node); + } catch (Exception e) { + // Ignore + } + } + } +} |