1 files changed, 692 insertions, 0 deletions
diff --git a/tags/java/sca/1.5.1/modules/host-tomcat/src/main/java/org/apache/tuscany/sca/http/tomcat/TomcatServer.java b/tags/java/sca/1.5.1/modules/host-tomcat/src/main/java/org/apache/tuscany/sca/http/tomcat/TomcatServer.java
new file mode 100644
index 0000000000..b93747c51c
--- /dev/null
+++ b/tags/java/sca/1.5.1/modules/host-tomcat/src/main/java/org/apache/tuscany/sca/http/tomcat/TomcatServer.java
@@ -0,0 +1,692 @@
+/*
+ * 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.http.tomcat;
+
+import java.beans.PropertyChangeListener;
+import java.net.InetAddress;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URL;
+import java.net.UnknownHostException;
+import java.security.AccessController;
+import java.security.KeyStore;
+import java.security.PrivilegedAction;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.Map.Entry;
+import java.util.concurrent.Executor;
+import java.util.logging.Logger;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.Servlet;
+import javax.servlet.ServletException;
+
+import org.apache.catalina.Container;
+import org.apache.catalina.Context;
+import org.apache.catalina.Lifecycle;
+import org.apache.catalina.LifecycleException;
+import org.apache.catalina.Loader;
+import org.apache.catalina.connector.Connector;
+import org.apache.catalina.core.StandardContext;
+import org.apache.catalina.core.StandardEngine;
+import org.apache.catalina.core.StandardHost;
+import org.apache.catalina.startup.ContextConfig;
+import org.apache.coyote.http11.Http11Protocol;
+import org.apache.tomcat.util.buf.MessageBytes;
+import org.apache.tomcat.util.http.mapper.MappingData;
+import org.apache.tomcat.util.net.JIoEndpoint;
+import org.apache.tuscany.sca.host.http.DefaultResourceServlet;
+import org.apache.tuscany.sca.host.http.SecurityContext;
+import org.apache.tuscany.sca.host.http.ServletHost;
+import org.apache.tuscany.sca.host.http.ServletMappingException;
+import org.apache.tuscany.sca.work.WorkScheduler;
+
+/**
+ * A Tomcat based implementation of ServletHost.
+ *
+ * @version $Rev$ $Date$
+ */
+@SuppressWarnings("deprecation")
+public class TomcatServer implements ServletHost {
+    private static final Logger logger = Logger.getLogger(TomcatServer.class.getName());
+
+    private int defaultPortNumber = 8080;
+    private int defaultSSLPortNumber = 443;
+
+    private final class TuscanyLoader implements Loader {
+        private final ClassLoader tccl;
+        private boolean delegate;
+        private boolean reloadable;
+        private Container container;
+        private List<String> repos = new ArrayList<String>();
+        private List<PropertyChangeListener> listeners = new ArrayList<PropertyChangeListener>();
+
+        private TuscanyLoader(ClassLoader tccl) {
+            this.tccl = tccl;
+        }
+
+        public void addPropertyChangeListener(PropertyChangeListener listener) {
+            listeners.add(listener);
+        }
+
+        public void addRepository(String repository) {
+            repos.add(repository);
+        }
+
+        public void backgroundProcess() {
+        }
+
+        public String[] findRepositories() {
+            return repos.toArray(new String[repos.size()]);
+        }
+
+        public Container getContainer() {
+            return container;
+        }
+
+        public boolean getDelegate() {
+            return delegate;
+        }
+
+        public String getInfo() {
+            return "Tuscany Loader for Embedded Tomcat";
+        }
+
+        public boolean getReloadable() {
+            return reloadable;
+        }
+
+        public boolean modified() {
+            return false;
+        }
+
+        public void removePropertyChangeListener(PropertyChangeListener listener) {
+            listeners.remove(listener);
+        }
+
+        public void setContainer(Container container) {
+            this.container = container;
+        }
+
+        public void setDelegate(boolean delegate) {
+            this.delegate = delegate;
+        }
+
+        public void setReloadable(boolean reloadable) {
+            this.reloadable = reloadable;
+        }
+
+        public ClassLoader getClassLoader() {
+            return tccl;
+        }
+    }
+
+    /**
+     * Represents a port and the server that serves it.
+     */
+    private class Port {
+        private StandardEngine engine;
+        private StandardHost host;
+        private Connector connector;
+
+        private Port(StandardEngine engine, StandardHost host, Connector connector) {
+            this.engine = engine;
+            this.host = host;
+            this.connector = connector;
+        }
+
+        public StandardEngine getEngine() {
+            return engine;
+        }
+
+        public StandardHost getHost() {
+            return host;
+        }
+
+        public Connector getConnector() {
+            return connector;
+        }
+    }
+
+    private Map<Integer, Port> ports = new HashMap<Integer, Port>();
+
+    private WorkScheduler workScheduler;
+
+    private String contextPath = "/";
+
+    /**
+     * Constructs a new embedded Tomcat server.
+     *
+     * @param workScheduler the WorkScheduler to use to process requests.
+     */
+    public TomcatServer(WorkScheduler workScheduler) {
+        this.workScheduler = workScheduler;
+    }
+
+    public void setDefaultPort(int port) {
+        defaultPortNumber = port;
+    }
+
+    public int getDefaultPort() {
+        return defaultPortNumber;
+    }
+
+    /**
+     * Stop all the started servers.
+     */
+    public void stop() throws ServletMappingException {
+        if (!ports.isEmpty()) {
+            try {
+                Set<Entry<Integer, Port>> entries = new HashSet<Entry<Integer, Port>>(ports.entrySet());
+                for (Entry<Integer, Port> entry : entries) {
+                    Port port = entry.getValue();
+                    port.getConnector().stop();
+                    port.getEngine().stop();
+                    ports.remove(entry.getKey());
+                }
+            } catch (Exception e) {
+                throw new ServletMappingException(e);
+            }
+        }
+    }
+    
+    public void addServletMapping(String suri, Servlet servlet) {
+        addServletMapping(suri, servlet, null);
+    }
+
+    public void addServletMapping(String suri, Servlet servlet, final SecurityContext securityContext) {
+        URI uri = URI.create(suri);
+
+        // Get the URI scheme and port
+        String scheme = null;
+        if(securityContext != null && securityContext.isSSLEnabled()) {
+            scheme = "https";
+        } else {
+            scheme = uri.getScheme();
+            if (scheme == null) {
+                scheme = "http";
+            }            
+        }
+        
+        int tmpPortNumber = uri.getPort();
+        if (tmpPortNumber == -1) {
+            if ("http".equals(scheme)) {
+                tmpPortNumber = defaultPortNumber;
+            } else {
+                tmpPortNumber = defaultPortNumber;
+            }
+        }
+        
+        final int portNumber = tmpPortNumber;
+
+        // Get the port object associated with the given port number
+        Port port = ports.get(portNumber);
+        if (port == null) {
+
+            // Create an engine
+            // Allow privileged access to read properties. Requires PropertiesPermission read in
+            // security policy.
+            final StandardEngine engine = AccessController.doPrivileged(new PrivilegedAction<StandardEngine>() {
+                public StandardEngine run() {
+                    return new StandardEngine();
+                }
+            });
+
+            engine.setBaseDir("");
+            engine.setDefaultHost("localhost");
+            engine.setName("engine/" + portNumber);
+
+            // Create a host
+            final StandardHost host = new StandardHost();
+            host.setAppBase("");
+            host.setName("localhost");
+            // Allow privileged access to read properties. Requires PropertiesPermission read in
+            // security policy.
+            AccessController.doPrivileged(new PrivilegedAction<Object>() {
+                public Object run() {
+                    engine.addChild(host);
+                    return null;
+                }
+            });
+
+            // Create the root context
+            StandardContext context = new StandardContext();
+            final ClassLoader tccl = Thread.currentThread().getContextClassLoader();
+            context.setLoader(new TuscanyLoader(tccl));
+            // context.setParentClassLoader(tccl.getParent());
+            context.setDocBase("");
+            context.setPath("");
+            ContextConfig config = new ContextConfig();
+            ((Lifecycle)context).addLifecycleListener(config);
+            host.addChild(context);
+
+            // Install an HTTP connector
+            // Allow privileged access to read properties. Requires PropertiesPermission read in
+            // security policy.
+            try {
+                AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
+                    public Object run() throws LifecycleException {
+                        engine.start();
+                        return null;
+                    }
+                });
+            } catch (PrivilegedActionException e) {
+                // throw (LifecycleException)e.getException();
+                throw new ServletMappingException(e);
+            }
+            Connector connector;
+            // Allow privileged access to read properties. Requires PropertiesPermission read in
+            // security policy.
+            try {
+                final String protocol = scheme;
+                connector = AccessController.doPrivileged(new PrivilegedExceptionAction<CustomConnector>() {
+                    public CustomConnector run() throws Exception {
+                        CustomConnector customConnector = new CustomConnector();
+                        customConnector.setPort(portNumber);
+                        customConnector.setContainer(engine);
+
+                        if ("https".equalsIgnoreCase(protocol)) {
+                            configureSSL(customConnector, securityContext);
+                            ((Http11Protocol) customConnector.getProtocolHandler()).setSSLEnabled(true);
+                        }
+                        customConnector.initialize();
+                        customConnector.start();
+                        return customConnector;
+                    }
+
+                    private void configureSSL(CustomConnector customConnector, SecurityContext securityContext) {
+                        String keyStoreType;
+                        String keyStore;
+                        String keyStorePass;
+
+                        String trustStoreType;
+                        String trustStore;
+                        String trustStorePass;
+
+                        if(securityContext == null) {
+                            keyStoreType = System.getProperty("javax.net.ssl.keyStoreType", KeyStore.getDefaultType());
+                            keyStore = System.getProperty("javax.net.ssl.keyStore");
+                            keyStorePass = System.getProperty("javax.net.ssl.keyStorePassword");
+
+                            trustStoreType = System.getProperty("javax.net.ssl.trustStoreType", KeyStore.getDefaultType());
+                            trustStore = System.getProperty("javax.net.ssl.trustStore");
+                            trustStorePass = System.getProperty("javax.net.ssl.trustStorePassword");
+                        } else {
+                            keyStoreType = securityContext.getSSLProperties().getProperty("javax.net.ssl.keyStoreType", KeyStore.getDefaultType());
+                            keyStore = securityContext.getSSLProperties().getProperty("javax.net.ssl.keyStore");
+                            keyStorePass = securityContext.getSSLProperties().getProperty("javax.net.ssl.keyStorePassword");
+
+                            trustStoreType = securityContext.getSSLProperties().getProperty("javax.net.ssl.trustStoreType", KeyStore.getDefaultType());
+                            trustStore = securityContext.getSSLProperties().getProperty("javax.net.ssl.trustStore");
+                            trustStorePass = securityContext.getSSLProperties().getProperty("javax.net.ssl.trustStorePassword");
+                        }
+                        
+                        customConnector.setProperty("protocol", "TLS");
+
+                        customConnector.setProperty("keytype", keyStoreType);
+                        customConnector.setProperty("keystore", keyStore);
+                        customConnector.setProperty("keypass", keyStorePass);
+
+                        customConnector.setProperty("trusttype", trustStoreType);
+                        customConnector.setProperty("truststore", trustStore);
+                        customConnector.setProperty("trustpass", trustStorePass);
+
+                        customConnector.setProperty("clientauth", "false");
+                        customConnector.setProtocol("HTTP/1.1");
+                        customConnector.setScheme(protocol);
+                        customConnector.setProperty("backlog", "10");
+                        customConnector.setSecure(true);
+                    }
+                });
+            } catch (Exception e) {
+                throw new ServletMappingException(e);
+            }
+            // Keep track of the running server
+            port = new Port(engine, host, connector);
+            ports.put(portNumber, port);
+        }
+
+        // Register the Servlet mapping
+        String path = uri.getPath();
+
+        if (!path.startsWith("/")) {
+            path = '/' + path;
+        }
+
+        if (!path.startsWith(contextPath)) {
+            path = contextPath + path;
+        }
+
+        ServletWrapper wrapper;
+        if (servlet instanceof DefaultResourceServlet) {
+            String defaultServletPath = path;
+
+            // Optimize the handling of resource requests, use the Tomcat default Servlet
+            // instead of our default resource Servlet
+            if (defaultServletPath.endsWith("*")) {
+                defaultServletPath = defaultServletPath.substring(0, defaultServletPath.length() - 1);
+            }
+            if (defaultServletPath.endsWith("/")) {
+                defaultServletPath = defaultServletPath.substring(0, defaultServletPath.length() - 1);
+            }
+            DefaultResourceServlet resourceServlet = (DefaultResourceServlet)servlet;
+            TomcatDefaultServlet defaultServlet =
+                new TomcatDefaultServlet(defaultServletPath, resourceServlet.getDocumentRoot());
+            wrapper = new ServletWrapper(defaultServlet);
+
+        } else {
+            wrapper = new ServletWrapper(servlet);
+        }
+        Context context = port.getHost().map(path);
+        wrapper.setName(path);
+        wrapper.addMapping(path);
+        context.addChild(wrapper);
+        context.addServletMapping(path, path);
+        port.getConnector().getMapper().addWrapper("localhost", "", path, wrapper);
+
+        // Initialize the Servlet
+        try {
+            wrapper.initServlet();
+        } catch (ServletException e) {
+            throw new ServletMappingException(e);
+        }
+
+        // Compute the complete URL
+        String host;
+        try {
+            host = InetAddress.getLocalHost().getHostName();
+        } catch (UnknownHostException e) {
+            host = "localhost";
+        }
+        URL addedURL;
+        try {
+            addedURL = new URL(scheme, host, portNumber, path);
+        } catch (MalformedURLException e) {
+            throw new ServletMappingException(e);
+        }
+        logger.info("Added Servlet mapping: " + addedURL);
+    }
+
+    public URL getURLMapping(String suri) throws ServletMappingException {
+        URI uri = URI.create(suri);
+
+        // Get the URI scheme and port
+        String scheme = uri.getScheme();
+        if (scheme == null) {
+            scheme = "http";
+        }
+        int portNumber = uri.getPort();
+        if (portNumber == -1) {
+            portNumber = defaultPortNumber;
+        }
+
+        // Get the host
+        String host;
+        try {
+            host = InetAddress.getLocalHost().getHostName();
+        } catch (UnknownHostException e) {
+            host = "localhost";
+        }
+
+        // Construct the URL
+        String path = uri.getPath();
+
+        if (!path.startsWith("/")) {
+            path = '/' + path;
+        }
+
+        if (!path.startsWith(contextPath)) {
+            path = contextPath + path;
+        }
+        URL url;
+        try {
+            url = new URL(scheme, host, portNumber, path);
+        } catch (MalformedURLException e) {
+            throw new ServletMappingException(e);
+        }
+        return url;
+    }
+
+    public Servlet getServletMapping(String suri) throws ServletMappingException {
+
+        if (suri == null) {
+            return null;
+        }
+
+        URI uri = URI.create(suri);
+
+        // Get the URI port
+        int portNumber = uri.getPort();
+        if (portNumber == -1) {
+            portNumber = defaultPortNumber;
+        }
+
+        // Get the port object associated with the given port number
+        Port port = ports.get(portNumber);
+        if (port == null) {
+            return null;
+        }
+
+        String mapping = uri.getPath();
+
+        if (!mapping.startsWith("/")) {
+            mapping = '/' + mapping;
+        }
+
+        if (!mapping.startsWith(contextPath)) {
+            mapping = contextPath + mapping;
+        }
+
+        final Context context = port.getHost().map(mapping);
+        final MappingData md = new MappingData();
+        final MessageBytes mb = MessageBytes.newInstance();
+        mb.setString(mapping);
+        try {
+            // Allow privileged access to read properties. Requires PropertiesPermission read in
+            // security policy.
+            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
+                public Object run() throws Exception {
+                    context.getMapper().map(mb, md);
+                    return null;
+                }
+            });
+        } catch (Exception e) {
+            return null;
+        }
+        if (md.wrapper instanceof ServletWrapper) {
+            ServletWrapper servletWrapper = (ServletWrapper)md.wrapper;
+            return servletWrapper.getServlet();
+        } else {
+            return null;
+        }
+    }
+
+    public Servlet removeServletMapping(String suri) {
+        URI uri = URI.create(suri);
+
+        // Get the URI port
+        int portNumber = uri.getPort();
+        if (portNumber == -1) {
+            portNumber = defaultPortNumber;
+        }
+
+        // Get the port object associated with the given port number
+        Port port = ports.get(portNumber);
+        if (port == null) {
+            throw new IllegalStateException("No servlet registered at this URI: " + suri);
+        }
+
+        String mapping = uri.getPath();
+
+        if (!mapping.startsWith("/")) {
+            mapping = '/' + mapping;
+        }
+
+        if (!mapping.startsWith(contextPath)) {
+            mapping = contextPath + mapping;
+        }
+
+        final Context context = port.getHost().map(mapping);
+        final MappingData md = new MappingData();
+        final MessageBytes mb = MessageBytes.newInstance();
+        mb.setString(mapping);
+        try {
+            // Allow privileged access to read properties. Requires PropertiesPermission read in
+            // security policy.
+            AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
+                public Object run() throws Exception {
+                    context.getMapper().map(mb, md);
+                    return null;
+                }
+            });
+        } catch (Exception e) {
+            return null;
+        }
+        if (md.wrapper instanceof ServletWrapper) {
+            ServletWrapper servletWrapper = (ServletWrapper)md.wrapper;
+
+            port.getConnector().getMapper().removeWrapper("localhost", "", mapping);
+
+            try {
+                context.removeServletMapping(mapping);
+            } catch (NegativeArraySizeException e) {
+                // JIRA TUSCANY-1599
+                // FIXME Looks like a bug in Tomcat when removing the last
+                // Servlet in the list, catch the exception for now as it doesn't
+                // seem harmful, will find a better solution for the next release
+            }
+            context.removeChild(servletWrapper);
+            try {
+                servletWrapper.destroyServlet();
+            } catch (Exception ex) {
+                // Hack to handle destruction of Servlets without Servlet context 
+            }
+
+            logger.info("Removed Servlet mapping: " + suri);
+
+            // Stop the port if there's no servlets on it anymore
+            String[] contextNames = port.getConnector().getMapper().getContextNames();
+            if (contextNames == null || contextNames.length == 0) {
+                try {
+                    port.getConnector().stop();
+                    port.getEngine().stop();
+                    ports.remove(portNumber);
+                } catch (LifecycleException e) {
+                    throw new IllegalStateException(e);
+                }
+            }
+
+            return servletWrapper.getServlet();
+        } else {
+            logger.warning("Trying to Remove servlet mapping: " + mapping + " where mapping is not registered");
+            return null;
+        }
+    }
+
+    public RequestDispatcher getRequestDispatcher(String suri) throws ServletMappingException {
+        //FIXME implement this later
+        return null;
+    }
+
+    public String getContextPath() {
+        return contextPath;
+    }
+
+    /**
+     * A custom connector that uses our WorkScheduler to schedule
+     * worker threads.
+     */
+    private class CustomConnector extends Connector {
+
+        private class CustomHttpProtocolHandler extends Http11Protocol {
+
+            /**
+             * An Executor wrapping our WorkScheduler
+             */
+            private class WorkSchedulerExecutor implements Executor {
+                public void execute(Runnable command) {
+                    workScheduler.scheduleWork(command);
+                }
+            }
+
+            /**
+             * A custom Endpoint that waits for its acceptor thread to
+             * terminate before stopping.
+             */
+            private class CustomEndpoint extends JIoEndpoint {
+                private Thread acceptorThread;
+
+                private class CustomAcceptor extends Acceptor {
+                    CustomAcceptor() {
+                        super();
+                    }
+                }
+
+                @Override
+                public void start() throws Exception {
+                    if (!initialized)
+                        init();
+                    if (!running) {
+                        running = true;
+                        paused = false;
+                        acceptorThread = new Thread(new CustomAcceptor(), getName() + "-Acceptor-" + 0);
+                        acceptorThread.setPriority(threadPriority);
+                        acceptorThread.setDaemon(daemon);
+                        acceptorThread.start();
+                    }
+                }
+
+                @Override
+                public void stop() {
+                    super.stop();
+                    try {
+                        acceptorThread.join();
+                    } catch (InterruptedException e) {
+                        throw new RuntimeException(e);
+                    }
+                }
+
+                @Override
+                public int getCurrentThreadsBusy() {
+                    return 0;
+                }
+            }
+
+            CustomHttpProtocolHandler() {
+                endpoint = new CustomEndpoint();
+                endpoint.setExecutor(new WorkSchedulerExecutor());
+            }
+        }
+
+        CustomConnector() throws Exception {
+            protocolHandler = new CustomHttpProtocolHandler();
+        }
+    }
+
+    public void setContextPath(String path) {
+        this.contextPath = path;
+    }
+
+}