1 files changed, 156 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core-spi/src/main/java/org/apache/tuscany/sca/runtime/ExtensibleDomainRegistryFactory.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core-spi/src/main/java/org/apache/tuscany/sca/runtime/ExtensibleDomainRegistryFactory.java
new file mode 100644
index 0000000000..ddb4279a4e
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core-spi/src/main/java/org/apache/tuscany/sca/runtime/ExtensibleDomainRegistryFactory.java
@@ -0,0 +1,156 @@
+/*
+ * 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.runtime;
+
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.oasisopen.sca.ServiceRuntimeException;
+
+/**
+ * A delegating DomainRegistryFactory
+ */
+public class ExtensibleDomainRegistryFactory implements DomainRegistryFactory {
+    private final DomainRegistryFactoryExtensionPoint factories;
+    private String[] allSchemes;
+    private String defaultScheme = "vm";
+
+    public ExtensibleDomainRegistryFactory(ExtensionPointRegistry registry) {
+        this.factories = registry.getExtensionPoint(DomainRegistryFactoryExtensionPoint.class);
+        RuntimeProperties ps = registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(RuntimeProperties.class);
+        if (ps.getProperties().containsKey("defaultScheme")) {
+            defaultScheme = ps.getProperties().getProperty("defaultScheme");
+        }
+        
+    }
+    
+    public ExtensibleDomainRegistryFactory(DomainRegistryFactoryExtensionPoint factories) {
+        this.factories = factories;
+    }
+    
+    public static ExtensibleDomainRegistryFactory getInstance(ExtensionPointRegistry registry) {
+        UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class);
+        return utilities.getUtility(ExtensibleDomainRegistryFactory.class);
+    }
+
+    public void addListener(EndpointListener listener) {
+        for (DomainRegistryFactory factory : factories.getDomainRegistryFactories()) {
+            factory.addListener(listener);
+        }
+    }
+
+    public Collection<DomainRegistry> getEndpointRegistries() {
+        List<DomainRegistry> registries = new ArrayList<DomainRegistry>();
+        for (DomainRegistryFactory factory : factories.getDomainRegistryFactories()) {
+            registries.addAll(factory.getEndpointRegistries());
+        }
+        return registries;
+    }
+
+    public DomainRegistry getEndpointRegistry(String endpointRegistryURI, String domainURI) {
+        if (domainURI == null) {
+            domainURI = getDomainName(endpointRegistryURI);
+        }
+        if (endpointRegistryURI == null) {
+            endpointRegistryURI = factories.getDomainRegistryMapping().get(domainURI);
+            if (endpointRegistryURI == null) {
+                endpointRegistryURI = domainURI;
+            }
+        }
+
+        String scheme = endpointRegistryURI == null ? null : URI.create(endpointRegistryURI).getScheme();
+        if (scheme == null) {
+            
+            // See if there is a previously created registry for that domain
+            for (DomainRegistryFactory factory : factories.getDomainRegistryFactories()) {
+                for (DomainRegistry domainRegistry : factory.getEndpointRegistries()) {
+                    if (domainRegistry.getDomainURI().equals(domainURI)) {
+                        return domainRegistry;
+                    }
+                }
+            }
+
+            scheme = defaultScheme;
+            endpointRegistryURI = scheme + ":" + endpointRegistryURI;
+        } else {
+            scheme = scheme.toLowerCase();
+        }
+        for (DomainRegistryFactory factory : factories.getDomainRegistryFactories()) {
+            String[] schemes = factory.getSupportedSchemes();
+            if (schemes != null && Arrays.asList(schemes).contains(scheme)) {
+                DomainRegistry domainRegistry = factory.getEndpointRegistry(endpointRegistryURI, domainURI);
+                if (domainRegistry == null) {
+                    continue;
+                } else {
+                    return domainRegistry;
+                }
+            }
+        }
+        throw new ServiceRuntimeException("No DomainRegistry can support " + endpointRegistryURI);
+    }
+
+    public void removeListener(EndpointListener listener) {
+        for (DomainRegistryFactory factory : factories.getDomainRegistryFactories()) {
+            factory.removeListener(listener);
+        }
+    }
+
+    public synchronized String[] getSupportedSchemes() {
+        if (allSchemes == null) {
+            Set<String> supportedSchemes = new HashSet<String>();
+            for (DomainRegistryFactory factory : factories.getDomainRegistryFactories()) {
+                String[] schemes = factory.getSupportedSchemes();
+                if (schemes != null) {
+                    supportedSchemes.addAll(Arrays.asList(schemes));
+                }
+            }
+            allSchemes = supportedSchemes.toArray(new String[supportedSchemes.size()]);
+        }
+        return allSchemes;
+    }
+
+    /**
+     * Derive a domain name from a domain URI
+     * Examples:
+     * Domain URI  -           Domain Name
+     * default                 default
+     * foo                     foo
+     * uri:foo                 foo
+     * uri://foo?key=x&key2=y  foo
+     * uri://foo/bar           foo/bar
+     */
+    private static String getDomainName(String domainURI) {
+        int scheme = domainURI.indexOf(':');
+        int qm = domainURI.indexOf('?');
+        if (qm == -1) {
+            return domainURI.substring(scheme+1);
+        } else {
+            return domainURI.substring(scheme+1, qm);
+        }
+    }
+
+}