Port binding.corba from 1.x to 2.x

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@924158 13f79535-47bb-0310-9956-ffa450edef68

9 files changed, 796 insertions, 0 deletions

diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHost.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHost.java
new file mode 100644
index 0000000000..eb49f3f841
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHost.java
@@ -0,0 +1,56 @@
+/*
+ * 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.host.corba;
+
+import org.omg.CORBA.Object;
+
+/**
+ * @version $Rev$ $Date$
+ * CORBA Service hosting interface
+ */
+public interface CorbaHost {
+
+    /**
+     * Registers servant in name server.
+     * 
+     * @param uri corbaname URI
+     * @param serviceObject
+     * @throws CorbaHostException
+     */
+    void registerServant(String uri, Object serviceObject) throws CorbaHostException;
+
+    /**
+     * Removes servant from name server
+     * 
+     * @param orb The ORB instance
+     * @param name binding name
+     * @throws CorbaHostException
+     */
+    void unregisterServant(String uri) throws CorbaHostException;
+
+    /**
+     * Gets reference to object
+     * 
+     * @param name binding name
+     * @return objects reference
+     * @throws CorbaHostException
+     */
+    Object lookup(String uri) throws CorbaHostException;
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostException.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostException.java
new file mode 100644
index 0000000000..049bfdb6cd
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostException.java
@@ -0,0 +1,47 @@
+/*
+ * 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.host.corba;
+
+/**
+ * @version $Rev$ $Date$
+ * General exception for corba hosts operations
+ */
+public class CorbaHostException extends Exception {
+
+    private static final long serialVersionUID = 1L;
+
+    public static final String BINDING_IN_USE = "Binding name is already in use";
+    public static final String NO_SUCH_OBJECT = "There is no object under given location";
+    public static final String NO_SUCH_HOST = "Couldn't find specified host";
+    public static final String NO_SUCH_PORT = "Couldn't connect to specified port";
+    public static final String WRONG_NAME = "Characters used in binding name are illegal";
+
+    public CorbaHostException(String message) {
+        super(message);
+    }
+
+    public CorbaHostException(Exception cause) {
+        super(cause);
+    }
+
+    public CorbaHostException(String message, Exception cause) {
+        super(message, cause);
+    }
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostExtensionPoint.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostExtensionPoint.java
new file mode 100644
index 0000000000..067b9193c5
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostExtensionPoint.java
@@ -0,0 +1,51 @@
+/*
+ * 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.host.corba;
+
+import java.util.List;
+
+/**
+ * @version $Rev$ $Date$
+ * An extension point for CORBA hostst
+ */
+public interface CorbaHostExtensionPoint {
+
+    /**
+     * Removes CORBA host extension
+     * 
+     * @param corbaHost
+     */
+    void addCorbaHost(CorbaHost corbaHost);
+
+    /**
+     * Removes CORBA host extension
+     * 
+     * @param corbaHost
+     */
+    void removeCorbaHost(CorbaHost corbaHost);
+
+    /**
+     * Gets all CORBA host extensions
+     * 
+     * @return
+     */
+    List<CorbaHost> getCorbaHosts();
+
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostUtils.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostUtils.java
new file mode 100644
index 0000000000..b90fe9c78b
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostUtils.java
@@ -0,0 +1,61 @@
+/*
+ * 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.host.corba;
+
+
+/**
+ * @version $Rev$ $Date$
+ * Various utilities for host-corba
+ */
+public class CorbaHostUtils {
+
+    /**
+     * Tests if given URI is valid corbaname string
+     * @param uri
+     * @return
+     */
+    public static boolean isValidCorbanameURI(String uri) {
+        return uri != null && uri.startsWith("corbaname:") && uri.contains("#") && uri.indexOf('#') < uri.length() - 1;
+    }
+
+    /**
+     * Creates corbaname URI basing on given parameters
+     * @param host
+     * @param port
+     * @param name
+     * 
+     * @return
+     */
+    public static String createCorbanameURI(String host, int port, String name) {
+        return new CorbanameURL(host, port, name).toString();
+    }
+
+    /**
+     * Translates corbaname URI to CorbanameDetails instances
+     * 
+     * @param uri
+     * @return
+     */
+    public static CorbanameURL getServiceDetails(String uri) {
+        CorbanameURL details = new CorbanameURL(uri);
+        return details;
+    }
+
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbanameURL.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbanameURL.java
new file mode 100644
index 0000000000..a380fd6d79
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbanameURL.java
@@ -0,0 +1,202 @@
+/*
+ * 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.host.corba;
+
+import java.io.UnsupportedEncodingException;
+import java.net.URLDecoder;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * @version $Rev$ $Date$
+ * Holds corbaname URI details
+ */
+public class CorbanameURL {
+    public static String DEFAULT_PROTOCOL = "iiop";
+    public static String DEFAULT_VERSION = "";
+    public static String DEFAULT_NAME_SERVICE = "NameService";
+    public static String DEFAULT_HOST = "localhost";
+    public static int DEFAULT_PORT = 2809;
+
+    private String protocol = "";
+    private String version = "";
+    private String host;
+    private int port;
+    private String nameService;
+    private List<String> namePath;
+
+    public CorbanameURL(String host, int port, String namePath, String nameService) {
+        super();
+        this.host = host == null ? DEFAULT_HOST : host;
+        this.port = port <= 0 ? DEFAULT_PORT : port;
+        this.namePath = parseName(namePath);
+        this.nameService = nameService == null ? DEFAULT_NAME_SERVICE : nameService;
+    }
+
+    public CorbanameURL(String host, int port, String namePath) {
+        this(host, port, namePath, DEFAULT_NAME_SERVICE);
+    }
+
+    public CorbanameURL(String url) {
+        if (url == null || (!url.startsWith("corbaname"))) {
+            throw new IllegalArgumentException("Malformed corbaname URL: " + url);
+        }
+        try {
+            url = URLDecoder.decode(url, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            throw new IllegalArgumentException(e);
+        }
+        String[] parts = url.split("#");
+        if (parts.length == 2) {
+            String serviceLocation = parts[0];
+            String servicePath = parts[1];
+            namePath = parseName(servicePath);
+
+            parts = serviceLocation.split("/");
+            if (parts.length == 2) {
+                nameService = parts[1];
+            } else {
+                nameService = DEFAULT_NAME_SERVICE;
+            }
+
+            parts = parts[0].split(":");
+
+            if (parts.length >= 2) {
+                protocol = parts[1];
+            }
+            if (parts.length >= 3) {
+                version = parts[2];
+                String[] strs = version.split("@");
+                if (strs.length == 2) {
+                    version = strs[0];
+                    host = strs[1];
+                } else {
+                    version = "";
+                    host = strs[0];
+                }
+            }
+            if (host == null || "".equals(host)) {
+                host = DEFAULT_HOST;
+            }
+            if (parts.length >= 4 && !"".equals(parts[3])) {
+                port = Integer.parseInt(parts[3]);
+            } else {
+                port = DEFAULT_PORT;
+            }
+        } else {
+            throw new IllegalArgumentException("Malformed corbaname URL: " + url);
+        }
+    }
+
+    private static List<String> parseName(String name) {
+        try {
+            name = URLDecoder.decode(name, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            throw new IllegalArgumentException(e);
+        }
+        String[] names = name.split("/");
+        return Arrays.asList(names);
+    }
+
+    public String getProtocol() {
+        return protocol;
+    }
+
+    public void setProtocol(String protocol) {
+        this.protocol = protocol;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public String getHost() {
+        return host;
+    }
+
+    public void setHost(String host) {
+        this.host = host;
+    }
+
+    public int getPort() {
+        return port;
+    }
+
+    public void setPort(int port) {
+        this.port = port;
+    }
+
+    public String getNameService() {
+        return nameService;
+    }
+
+    public void setNameService(String nameService) {
+        this.nameService = nameService;
+    }
+
+    public List<String> getNamePath() {
+        return namePath;
+    }
+    
+    public String getName() {
+        if (namePath != null) {
+            StringBuffer buf = new StringBuffer();
+            for (int i = 0; i < namePath.size(); i++) {
+                buf.append(namePath.get(i));
+                if (i < namePath.size() - 1) {
+                    buf.append("/");
+                }
+            }
+            return buf.toString();
+        }
+        return null;
+    }
+
+    public void setNamePath(List<String> namePath) {
+        this.namePath = namePath;
+    }
+
+    @Override
+    public String toString() {
+        StringBuffer buf = new StringBuffer();
+        buf.append("corbaname:");
+        buf.append(protocol).append(":");
+        if (version != null && !"".equals(version)) {
+            buf.append(version).append("@");
+        }
+        buf.append(host).append(":").append(port);
+        buf.append("/").append(nameService);
+        buf.append("#");
+        if (namePath != null) {
+            for (int i = 0; i < namePath.size(); i++) {
+                buf.append(namePath.get(i));
+                if (i < namePath.size() - 1) {
+                    buf.append("/");
+                }
+            }
+        }
+        return buf.toString();
+    }
+
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/DefaultCorbaHostExtensionPoint.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/DefaultCorbaHostExtensionPoint.java
new file mode 100644
index 0000000000..6ed7f3ea83
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/DefaultCorbaHostExtensionPoint.java
@@ -0,0 +1,80 @@
+/*
+ * 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.host.corba;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.LifeCycleListener;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.extensibility.ServiceHelper;
+import org.oasisopen.sca.ServiceRuntimeException;
+
+/**
+ * @version $Rev$ $Date$
+ * Default implementation of CorbaHostExtensionPoint
+ */
+public class DefaultCorbaHostExtensionPoint implements CorbaHostExtensionPoint, LifeCycleListener {
+    private ExtensionPointRegistry registry;
+    private boolean loaded;
+    private List<CorbaHost> corbaHosts = new ArrayList<CorbaHost>();
+
+    public DefaultCorbaHostExtensionPoint(ExtensionPointRegistry registry) {
+        this.registry = registry;
+    }
+
+    private synchronized void loadHosts() {
+        if (loaded) {
+            return;
+        }
+        try {
+            ServiceDeclaration sd = registry.getServiceDiscovery().getServiceDeclaration(CorbaHost.class);
+            CorbaHost host = ServiceHelper.newInstance(registry, sd);
+            ServiceHelper.start(host);
+            corbaHosts.add(host);
+        } catch (Throwable e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    public void addCorbaHost(CorbaHost host) {
+        corbaHosts.add(host);
+    }
+
+    public void removeCorbaHost(CorbaHost host) {
+        corbaHosts.remove(host);
+    }
+
+    public List<CorbaHost> getCorbaHosts() {
+        loadHosts();
+        return corbaHosts;
+    }
+
+    public void start() {
+    }
+
+    public void stop() {
+        ServiceHelper.stop(corbaHosts);
+        corbaHosts.clear();
+        loaded = false;
+    }
+
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/ExtensibleCorbaHost.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/ExtensibleCorbaHost.java
new file mode 100644
index 0000000000..7e043667a9
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/ExtensibleCorbaHost.java
@@ -0,0 +1,55 @@
+/*
+ * 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.host.corba;
+
+import org.omg.CORBA.Object;
+
+/**
+ * @version $Rev$ $Date$
+ * Default implementation of extensible CORBA host
+ */
+public class ExtensibleCorbaHost implements CorbaHost {
+
+    private CorbaHostExtensionPoint hosts;
+
+    public ExtensibleCorbaHost(CorbaHostExtensionPoint chep) {
+        this.hosts = chep;
+    }
+
+    public Object lookup(String uri) throws CorbaHostException {
+        return getCorbaHost().lookup(uri);
+    }
+
+    public void registerServant(String uri, Object serviceObject) throws CorbaHostException {
+        getCorbaHost().registerServant(uri, serviceObject);
+    }
+
+    public void unregisterServant(String uri) throws CorbaHostException {
+        getCorbaHost().unregisterServant(uri);
+    }
+    
+    protected CorbaHost getCorbaHost() throws CorbaHostException {
+        if (hosts.getCorbaHosts().isEmpty()) {
+            throw new CorbaHostException("No registered CORBA hosts");
+        }
+        return hosts.getCorbaHosts().get(0);
+    }
+
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/SocketUtil.java b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/SocketUtil.java
new file mode 100755
index 0000000000..6989b3ad06
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/SocketUtil.java
@@ -0,0 +1,226 @@
+/*
+ * 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.host.corba;
+
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.net.UnknownHostException;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * @version $Rev$ $Date$
+ * Class partially copied from eclipse wst project
+ * (http://repo1.maven.org/maven2/org/eclipse/wst/server/core/1.0.205-v20070829b/).
+ * Finally we should use jar from maven dependency. Problem described in
+ * http://www.fornax-platform.org/cp/display/fornax/2.+Hello+World+Tutorial+(CSC)?replyToComment=2098#comment-2098
+ * needs to be fixed.
+ */
+public class SocketUtil {
+
+    protected static final Object lock = new Object();
+
+    private static Set<String> localHostCache;
+    private static Set<String> notLocalHostCache = new HashSet<String>();
+    private static Map<String, CacheThread> threadMap = new HashMap<String, CacheThread>();
+
+    private static Set<InetAddress> addressCache;
+
+    static class CacheThread extends Thread {
+        private Set<InetAddress> currentAddresses;
+        private Set<String> addressList;
+        private String host;
+        private Set<String> nonAddressList;
+        private Map<String, CacheThread> threadMap2;
+
+        public CacheThread(String host,
+                           Set<InetAddress> currentAddresses,
+                           Set<String> addressList,
+                           Set<String> nonAddressList,
+                           Map<String, CacheThread> threadMap2) {
+            super("Caching localhost information");
+            this.host = host;
+            this.currentAddresses = currentAddresses;
+            this.addressList = addressList;
+            this.nonAddressList = nonAddressList;
+            this.threadMap2 = threadMap2;
+        }
+
+        public void run() {
+            if (currentAddresses != null) {
+                Iterator<InetAddress> iter2 = currentAddresses.iterator();
+                while (iter2.hasNext()) {
+                    InetAddress addr = iter2.next();
+                    String hostname = addr.getHostName();
+                    String hostname2 = addr.getCanonicalHostName();
+                    synchronized (lock) {
+                        if (hostname != null && !addressList.contains(hostname))
+                            addressList.add(hostname);
+                        if (hostname2 != null && !addressList.contains(hostname2))
+                            addressList.add(hostname2);
+                    }
+                }
+            }
+
+            try {
+                InetAddress[] addrs = InetAddress.getAllByName(host);
+                int length = addrs.length;
+                for (int j = 0; j < length; j++) {
+                    InetAddress addr = addrs[0];
+                    String hostname = addr.getHostName();
+                    String hostname2 = addr.getCanonicalHostName();
+                    synchronized (lock) {
+                        if (addr.isLoopbackAddress()) {
+                            if (hostname != null && !addressList.contains(hostname))
+                                addressList.add(hostname);
+                            if (hostname2 != null && !addressList.contains(hostname2))
+                                addressList.add(hostname2);
+                        } else {
+                            if (hostname != null && !nonAddressList.contains(hostname))
+                                nonAddressList.add(hostname);
+                            if (hostname2 != null && !nonAddressList.contains(hostname2))
+                                nonAddressList.add(hostname2);
+                        }
+                    }
+                }
+            } catch (UnknownHostException e) {
+                synchronized (lock) {
+                    if (host != null && !nonAddressList.contains(host))
+                        nonAddressList.add(host);
+                }
+            }
+            synchronized (lock) {
+                threadMap2.remove(host);
+            }
+        }
+    }
+
+    public static boolean isLocalhost(final String host) {
+        if (host == null || host.equals(""))
+            return false;
+
+        if ("localhost".equals(host) || "127.0.0.1".equals(host))
+            return true;
+
+        // check simple cases
+        try {
+            InetAddress localHostaddr = InetAddress.getLocalHost();
+            if (localHostaddr.getHostName().equals(host) || host.equals(localHostaddr.getCanonicalHostName())
+                || localHostaddr.getHostAddress().equals(host))
+                return true;
+        } catch (Exception e) {
+
+        }
+
+        // check for current thread and wait if necessary
+        boolean currentThread = false;
+        try {
+            Thread t = null;
+            synchronized (lock) {
+                t = threadMap.get(host);
+            }
+            if (t != null && t.isAlive()) {
+                currentThread = true;
+                t.join(30);
+            }
+        } catch (Exception e) {
+
+        }
+
+        // check if cache is still ok
+        boolean refreshedCache = false;
+        try {
+            // get network interfaces
+            final Set<InetAddress> currentAddresses = new HashSet<InetAddress>();
+            currentAddresses.add(InetAddress.getLocalHost());
+            Enumeration<?> nis = NetworkInterface.getNetworkInterfaces();
+            while (nis.hasMoreElements()) {
+                NetworkInterface inter = (NetworkInterface)nis.nextElement();
+                Enumeration<InetAddress> ias = inter.getInetAddresses();
+                while (ias.hasMoreElements())
+                    currentAddresses.add(ias.nextElement());
+            }
+
+            // check if cache is empty or old and refill it if necessary
+            if (addressCache == null || !addressCache.containsAll(currentAddresses)
+                || !currentAddresses.containsAll(addressCache)) {
+                CacheThread cacheThread = null;
+                refreshedCache = true;
+
+                synchronized (lock) {
+                    addressCache = currentAddresses;
+                    notLocalHostCache = new HashSet<String>();
+                    localHostCache = new HashSet<String>(currentAddresses.size() * 3);
+
+                    Iterator<InetAddress> iter = currentAddresses.iterator();
+                    while (iter.hasNext()) {
+                        InetAddress addr = iter.next();
+                        String a = addr.getHostAddress();
+                        if (a != null && !localHostCache.contains(a))
+                            localHostCache.add(a);
+                    }
+
+                    cacheThread = new CacheThread(host, currentAddresses, localHostCache, notLocalHostCache, threadMap);
+                    threadMap.put(host, cacheThread);
+                    cacheThread.setDaemon(true);
+                    cacheThread.setPriority(Thread.NORM_PRIORITY - 1);
+                    cacheThread.start();
+                }
+                cacheThread.join(200);
+            }
+        } catch (Exception e) {
+        }
+
+        synchronized (lock) {
+            if (localHostCache.contains(host))
+                return true;
+            if (notLocalHostCache.contains(host))
+                return false;
+        }
+
+        // if the cache hasn't been cleared, maybe we still need to lookup the
+        // host
+        if (!refreshedCache && !currentThread) {
+            try {
+                CacheThread cacheThread = null;
+                synchronized (lock) {
+                    cacheThread = new CacheThread(host, null, localHostCache, notLocalHostCache, threadMap);
+                    threadMap.put(host, cacheThread);
+                    cacheThread.setDaemon(true);
+                    cacheThread.setPriority(Thread.NORM_PRIORITY - 1);
+                    cacheThread.start();
+                }
+                cacheThread.join(75);
+
+                synchronized (lock) {
+                    if (localHostCache.contains(host))
+                        return true;
+                }
+            } catch (Exception e) {
+            }
+        }
+        return false;
+    }
+
+}
diff --git a/sca-java-2.x/trunk/modules/host-corba/src/main/resources/META-INF/services/org.apache.tuscany.sca.host.corba.CorbaHostExtensionPoint b/sca-java-2.x/trunk/modules/host-corba/src/main/resources/META-INF/services/org.apache.tuscany.sca.host.corba.CorbaHostExtensionPoint
new file mode 100644
index 0000000000..a72bed4ea8
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/host-corba/src/main/resources/META-INF/services/org.apache.tuscany.sca.host.corba.CorbaHostExtensionPoint
@@ -0,0 +1,18 @@
+# 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.

+

+org.apache.tuscany.sca.host.corba.DefaultCorbaHostExtensionPoint