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Diffstat (limited to 'sca-java-1.x/branches/sca-java-1.2.1/modules/workspace-admin/src/main/java/org/apache/tuscany/sca/workspace/admin/impl/NodeProcessCollectionFacadeImpl.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-1.2.1/modules/workspace-admin/src/main/java/org/apache/tuscany/sca/workspace/admin/impl/NodeProcessCollectionFacadeImpl.java | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.2.1/modules/workspace-admin/src/main/java/org/apache/tuscany/sca/workspace/admin/impl/NodeProcessCollectionFacadeImpl.java b/sca-java-1.x/branches/sca-java-1.2.1/modules/workspace-admin/src/main/java/org/apache/tuscany/sca/workspace/admin/impl/NodeProcessCollectionFacadeImpl.java new file mode 100644 index 0000000000..251f6cd410 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.2.1/modules/workspace-admin/src/main/java/org/apache/tuscany/sca/workspace/admin/impl/NodeProcessCollectionFacadeImpl.java @@ -0,0 +1,249 @@ +/* + * 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.workspace.admin.impl; + +import static org.apache.tuscany.sca.workspace.admin.impl.DomainAdminUtil.compositeQName; +import static org.apache.tuscany.sca.workspace.admin.impl.DomainAdminUtil.dynamicReference; +import static org.apache.tuscany.sca.workspace.admin.impl.DomainAdminUtil.newRuntime; +import static org.apache.tuscany.sca.workspace.admin.impl.DomainAdminUtil.nodeURI; + +import java.net.URI; +import java.util.ArrayList; +import java.util.List; +import java.util.logging.Logger; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.binding.atom.AtomBinding; +import org.apache.tuscany.sca.binding.atom.AtomBindingFactory; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.assembly.CompositeActivator; +import org.apache.tuscany.sca.host.embedded.impl.ReallySmallRuntime; +import org.apache.tuscany.sca.implementation.data.collection.Entry; +import org.apache.tuscany.sca.implementation.data.collection.Item; +import org.apache.tuscany.sca.implementation.data.collection.ItemCollection; +import org.apache.tuscany.sca.implementation.data.collection.LocalItemCollection; +import org.apache.tuscany.sca.implementation.data.collection.NotFoundException; +import org.osoa.sca.ServiceReference; +import org.osoa.sca.ServiceRuntimeException; +import org.osoa.sca.annotations.Init; +import org.osoa.sca.annotations.Reference; +import org.osoa.sca.annotations.Scope; +import org.osoa.sca.annotations.Service; + +/** + * Implementation of a node process collection service. + * + * @version $Rev$ $Date$ + */ +@Scope("COMPOSITE") +@Service(interfaces={ItemCollection.class, LocalItemCollection.class}) +public class NodeProcessCollectionFacadeImpl implements ItemCollection, LocalItemCollection { + + private final static Logger logger = Logger.getLogger(NodeProcessCollectionFacadeImpl.class.getName()); + + @Reference + public LocalItemCollection cloudCollection; + + private AssemblyFactory assemblyFactory; + private AtomBindingFactory atomBindingFactory; + private CompositeActivator compositeActivator; + + /** + * Initialize the component. + */ + @Init + public void initialize() { + + // Get a runtime + ReallySmallRuntime runtime = newRuntime(); + + // Get its composite activator + compositeActivator = runtime.getCompositeActivator(); + + // Get the model factories + ExtensionPointRegistry registry = runtime.getExtensionPointRegistry(); + ModelFactoryExtensionPoint modelFactories = registry.getExtensionPoint(ModelFactoryExtensionPoint.class); + assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + atomBindingFactory = modelFactories.getFactory(AtomBindingFactory.class); + } + + public Entry<String, Item>[] getAll() { + logger.info("getAll"); + + // Get the collection of nodes + Entry<String, Item>[] nodeEntries = cloudCollection.getAll(); + + // Dispatch to the hosts hosting these nodes + List<Entry<String, Item>> entries = new ArrayList<Entry<String,Item>>(); + for (String host: hosts(nodeEntries)) { + ItemCollection processCollection = processCollection(host); + for (Entry<String, Item> remoteEntry: processCollection.getAll()) { + entries.add(remoteEntry); + } + break; + } + + return entries.toArray(new Entry[entries.size()]); + } + + public Item get(String key) throws NotFoundException { + logger.info("get " + key); + + // Get the host hosting the given node + String host = host(key); + + // Dispatch the request to that host + ItemCollection processCollection = processCollection(host); + return processCollection.get(key); + } + + public String post(String key, Item item) { + logger.info("post " + key); + + // Get the host hosting the given node + String host; + try { + host = host(key); + } catch (NotFoundException e) { + throw new ServiceRuntimeException(e); + } + + // Dispatch the request to that host + ItemCollection processCollection = processCollection(host); + return processCollection.post(key, item); + } + + public void put(String key, Item item) throws NotFoundException { + throw new UnsupportedOperationException(); + } + + public void delete(String key) throws NotFoundException { + logger.info("delete " + key); + + // Get the host hosting the given node + String host = host(key); + + // Dispatch the request to that host + ItemCollection processCollection = processCollection(host); + processCollection.delete(key); + } + + public Entry<String, Item>[] query(String queryString) { + logger.info("query " + queryString); + + if (queryString.startsWith("node=")) { + String key = queryString.substring(queryString.indexOf('=') + 1); + + // Get the host hosting the given node + String host; + try { + host = host(key); + } catch (NotFoundException e) { + return new Entry[0]; + } + + // Dispatch the request to that host + ItemCollection processCollection = processCollection(host); + return processCollection.query(queryString); + + } else { + throw new UnsupportedOperationException(); + } + } + + private String host(String nodeName) throws NotFoundException { + + // Get the entry representing the given node + Entry<String, Item> nodeEntry = nodeEntry(cloudCollection.getAll(), nodeName); + if (nodeEntry == null) { + throw new NotFoundException(nodeName); + } + + // Get the host hosting it + return host(nodeEntry.getData()); + } + + /** + * Returns the entry representing the given node. + * + * @param entries + * @param name + * @return + */ + private static Entry<String, Item> nodeEntry(Entry<String, Item>[] entries, String name) { + for (Entry<String, Item> entry: entries) { + QName qname = compositeQName(entry.getKey()); + if (qname.getLocalPart().equals(name)) { + return entry; + } + } + return null; + } + + /** + * Returns the lists of hosts hosting the nodes in the given entries. + * + * @param entries + * @return + */ + private static List<String> hosts(Entry<String, Item>[] entries) { + List<String> hosts = new ArrayList<String>(); + for (Entry<String, Item> entry: entries) { + String host = host(entry.getData()); + if (!hosts.contains(host)) { + hosts.add(host); + } + } + return hosts; + } + + /** + * Returns the host of the node represented by the given item. + * + * @param item + * @return + */ + private static String host(Item item) { + String uri = nodeURI(item.getContents()); + if (uri != null) { + return URI.create(uri).getHost(); + } else { + return null; + } + } + + /** + * Returns a proxy to the process collection service on the specified + * host. + * + * @param host + * @return + */ + private ItemCollection processCollection(String host) { + AtomBinding binding = atomBindingFactory.createAtomBinding(); + binding.setURI("http://" + host + ":9990/node/processes"); + ServiceReference<ItemCollection> reference = dynamicReference(ItemCollection.class, binding, assemblyFactory, compositeActivator); + return reference.getService(); + } + +} |