1 files changed, 139 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAServiceBindingProvider.java b/sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAServiceBindingProvider.java
new file mode 100644
index 0000000000..f5745f75e3
--- /dev/null
+++ b/sca-java-2.x/tags/2.0-Beta2-RC1/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAServiceBindingProvider.java
@@ -0,0 +1,139 @@
+/*
+ * 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.binding.sca.provider;
+
+import java.util.Iterator;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.invocation.InvocationChain;
+import org.apache.tuscany.sca.invocation.InvokerAsyncResponse;
+import org.apache.tuscany.sca.invocation.Phase;
+import org.apache.tuscany.sca.provider.EndpointAsyncProvider;
+import org.apache.tuscany.sca.provider.OptimisingBindingProvider;
+import org.apache.tuscany.sca.provider.ServiceBindingProvider;
+import org.apache.tuscany.sca.runtime.RuntimeComponentService;
+import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
+
+/**
+ * The sca service binding provider mediates between the twin requirements of
+ * local sca bindings and remote sca bindings. In the local case is does
+ * very little. When the sca binding model is set as being remote this binding will
+ * try and create a remote service endpoint for remote references to connect to
+ *
+ * @version $Rev$ $Date$
+ */
+public class RuntimeSCAServiceBindingProvider implements EndpointAsyncProvider, OptimisingBindingProvider {
+    private RuntimeEndpoint endpoint;
+    private RuntimeComponentService service;
+
+    private ServiceBindingProvider distributedProvider;
+    private SCABindingMapper scaBindingMapper;
+
+    public RuntimeSCAServiceBindingProvider(ExtensionPointRegistry extensionPoints, RuntimeEndpoint endpoint) {
+        this.endpoint = endpoint;
+        this.service = (RuntimeComponentService)endpoint.getService();
+        UtilityExtensionPoint utilities = extensionPoints.getExtensionPoint(UtilityExtensionPoint.class);
+        this.scaBindingMapper = utilities.getUtility(SCABindingMapper.class);
+
+        // if there is potentially a wire to this service that crosses the node boundary
+        // then we need to create a remote endpoint 
+        if (service.getInterfaceContract().getInterface().isRemotable()) {
+
+            if (scaBindingMapper.isRemotable(endpoint)) {
+                distributedProvider = new DelegatingSCAServiceBindingProvider(endpoint, scaBindingMapper);
+            }
+        }
+    }
+
+    /*
+    protected boolean isDistributed(ExtensionPointRegistry extensionPoints, Endpoint endpoint) {
+        // find if the node config is for distributed endpoints
+        // TODO: temp, need a much better way to do this
+        DomainRegistryFactory domainRegistryFactory = ExtensibleDomainRegistryFactory.getInstance(extensionPoints);
+        Collection<EndpointRegistry> eprs = domainRegistryFactory.getEndpointRegistries();
+        if (eprs.size() > 0) {
+            String eprName = eprs.iterator().next().getClass().getName();
+            return !eprName.equals("org.apache.tuscany.sca.core.assembly.impl.EndpointRegistryImpl");
+        }
+        return false;
+    }
+    */
+
+    public InterfaceContract getBindingInterfaceContract() {
+        if (distributedProvider != null) {
+            return distributedProvider.getBindingInterfaceContract();
+        } else {
+            return endpoint.getComponentTypeServiceInterfaceContract();
+        }
+    }
+
+    public boolean supportsOneWayInvocation() {
+        if (distributedProvider != null) {
+            return distributedProvider.supportsOneWayInvocation();
+        }
+        return false;
+    }
+
+    public void start() {
+        if (distributedProvider != null) {
+            distributedProvider.start();
+        }
+    }
+
+    public void stop() {
+        endpoint.getBinding().setURI(null);
+        if (distributedProvider != null) {
+            distributedProvider.stop();
+        }
+    }
+
+    public void configure() {
+        // TODO Auto-generated method stub   
+    }
+    
+    public boolean supportsNativeAsync() {
+        return true;
+    }
+    
+    public InvokerAsyncResponse createAsyncResponseInvoker() {
+        return new SCABindingAsyncResponseInvoker(null, null);
+    }
+
+    /**
+     * Handles the optimisation for the service side chain, which provides a mechanism for direct local
+     * invocation of the service in cases where the component reference is in the same JVM as the 
+     * component service.  Effectively, this means skipping any Remote Binding listener and its associated
+     * binding chain and data binding processors.
+     * 
+     * This means inserting a SCABindingLocalInvocationInterceptor into the chains for the Endpoint,
+     * which is placed immediately before the Policy processors (and after any Databinding processors)
+     */
+	public void optimiseBinding(RuntimeEndpoint ep) {
+		// To optimise, place an SCA binding Local Invocation interceptor at the start of the POLICY phase
+		// of the service chain...
+		for (InvocationChain chain : ep.getInvocationChains()) {
+			chain.addHeadInterceptor( Phase.SERVICE_POLICY, new SCABindingLocalInvocationInterceptor() );
+		} // end for
+			
+	} // end method optimiseBinding
+    
+} // end class RuntimeSCAServiceBinding