diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca')
8 files changed, 785 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHost.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostException.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostExtensionPoint.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbaHostUtils.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/CorbanameURL.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/DefaultCorbaHostExtensionPoint.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/ExtensibleCorbaHost.java b/sca-java-2.x/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/ExtensibleCorbaHost.java new file mode 100644 index 0000000000..644682e106 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/ExtensibleCorbaHost.java @@ -0,0 +1,62 @@ +/* + * 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.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.UtilityExtensionPoint; +import org.omg.CORBA.Object; + +/** + * @version $Rev$ $Date$ + * Default implementation of extensible CORBA host + */ +public class ExtensibleCorbaHost implements CorbaHost { + + private CorbaHostExtensionPoint hosts; + + public ExtensibleCorbaHost(ExtensionPointRegistry registry) { + this.hosts = registry.getExtensionPoint(CorbaHostExtensionPoint.class); + } + + public static ExtensibleCorbaHost getInstance(ExtensionPointRegistry registry) { + UtilityExtensionPoint utilityExtensionPoint = registry.getExtensionPoint(UtilityExtensionPoint.class); + return utilityExtensionPoint.getUtility(ExtensibleCorbaHost.class); + } + + 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/tags/2.0.1-RC1/modules/host-corba/src/main/java/org/apache/tuscany/sca/host/corba/SocketUtil.java b/sca-java-2.x/tags/2.0.1-RC1/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/tags/2.0.1-RC1/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; + } + +} |