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Diffstat (limited to 'tags/java/sca/2.0-M3-RC4/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAReferenceBindingProvider.java')
| -rw-r--r-- | tags/java/sca/2.0-M3-RC4/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAReferenceBindingProvider.java | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/tags/java/sca/2.0-M3-RC4/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAReferenceBindingProvider.java b/tags/java/sca/2.0-M3-RC4/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAReferenceBindingProvider.java deleted file mode 100644 index d0d5d34d80..0000000000 --- a/tags/java/sca/2.0-M3-RC4/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/RuntimeSCAReferenceBindingProvider.java +++ /dev/null @@ -1,246 +0,0 @@ -/* - * 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.net.URI; -import java.util.logging.Logger; - -import org.apache.tuscany.sca.assembly.DistributedSCABinding; -import org.apache.tuscany.sca.assembly.Endpoint; -import org.apache.tuscany.sca.assembly.EndpointReference; -import org.apache.tuscany.sca.assembly.OptimizableBinding; -import org.apache.tuscany.sca.assembly.SCABinding; -import org.apache.tuscany.sca.assembly.SCABindingFactory; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.core.FactoryExtensionPoint; -import org.apache.tuscany.sca.interfacedef.InterfaceContract; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.invocation.InvocationChain; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.provider.BindingProviderFactory; -import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint; -import org.apache.tuscany.sca.provider.ReferenceBindingProvider; -import org.apache.tuscany.sca.runtime.RuntimeComponent; -import org.apache.tuscany.sca.runtime.RuntimeComponentReference; -import org.apache.tuscany.sca.runtime.RuntimeComponentService; -import org.apache.tuscany.sca.runtime.RuntimeWire; -import org.oasisopen.sca.ServiceUnavailableException; - -/** - * The sca reference 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 (because a - * reference target can't be resolved in the current model) this binding will - * try and create a remote connection to it - * - * @version $Rev$ $Date$ - */ -public class RuntimeSCAReferenceBindingProvider implements ReferenceBindingProvider { - - private static final Logger logger = Logger.getLogger(RuntimeSCAReferenceBindingProvider.class.getName()); - - private RuntimeComponent component; - private RuntimeComponentReference reference; - private SCABinding binding; - private boolean started = false; - - private BindingProviderFactory<DistributedSCABinding> distributedProviderFactory = null; - private ReferenceBindingProvider distributedProvider = null; - private SCABindingFactory scaBindingFactory; - - public RuntimeSCAReferenceBindingProvider(ExtensionPointRegistry extensionPoints, - RuntimeComponent component, - RuntimeComponentReference reference, - SCABinding binding) { - this.component = component; - this.reference = reference; - this.binding = binding; - this.scaBindingFactory = - extensionPoints.getExtensionPoint(FactoryExtensionPoint.class).getFactory(SCABindingFactory.class); - - // look to see if a distributed SCA binding implementation has - // been included on the classpath. This will be needed by the - // provider itself to do it's thing - ProviderFactoryExtensionPoint factoryExtensionPoint = - extensionPoints.getExtensionPoint(ProviderFactoryExtensionPoint.class); - distributedProviderFactory = - (BindingProviderFactory<DistributedSCABinding>)factoryExtensionPoint - .getProviderFactory(DistributedSCABinding.class); - - } - - public boolean isTargetRemote() { - boolean targetIsRemote = false; - - // first look at the target service and see if this has been resolved - OptimizableBinding optimizableBinding = (OptimizableBinding)binding; - - // The decision is based on the results of the wiring process in the assembly model - // The SCA binding is used to represent unresolved reference targets, i.e. those - // reference targets that need resolving at run time. We can tell by lookin if the - // service to which this binding refers is resolved or not. - // - // TODO - When a callback is in operation. A callback reference bindings sometimes has to - // act as though there is a local wire and sometimes as if there is a remote wire - // what are the implications of this here? - - if (RemoteBindingHelper.isTargetRemote()) { - if (reference.getInterfaceContract() != null) { - targetIsRemote = reference.getInterfaceContract().getInterface().isRemotable(); - } else { - targetIsRemote = true; - } - } else if (optimizableBinding.getTargetComponentService() != null) { - if (optimizableBinding.getTargetComponentService().isUnresolved() == true) { - targetIsRemote = true; - } else { - targetIsRemote = false; - } - } else { - // the case where the wire is specified by URI, e.g. callbacks or user specified bindings, and - // look at the provided URI to decide whether it is a local or remote case - try { - if (binding.getURI() != null) { - URI uri = new URI(binding.getURI()); - if (uri.isAbsolute()) { - targetIsRemote = true; - } else { - targetIsRemote = false; - } - } else { - targetIsRemote = false; - } - } catch (Exception ex) { - targetIsRemote = false; - } - } - return targetIsRemote; - } - - private ReferenceBindingProvider getDistributedProvider() { - - if (isTargetRemote()) { - // initialize the remote provider if it hasn't been done already - if (distributedProvider == null) { - if (reference.getInterfaceContract() != null && !reference.getInterfaceContract().getInterface().isRemotable()) { - throw new IllegalStateException("Reference interface not remotable for component: " + component - .getName() - + " and reference: " - + reference.getName()); - } - - if (distributedProviderFactory == null) { - throw new IllegalStateException("No distributed SCA binding available for component: " + component - .getName() - + " and reference: " - + reference.getName()); - } - - // create the remote provider - DistributedSCABinding distributedBinding = scaBindingFactory.createDistributedSCABinding(); - distributedBinding.setSCABinding(binding); - - distributedProvider = - distributedProviderFactory.createReferenceBindingProvider(component, reference, distributedBinding); - } - } - - return distributedProvider; - } - - public InterfaceContract getBindingInterfaceContract() { - if (isTargetRemote()) { - return getDistributedProvider().getBindingInterfaceContract(); - } else { - if (reference.getReference() != null) { - return reference.getReference().getInterfaceContract(); - } else { - return reference.getInterfaceContract(); - } - } - } - - public boolean supportsOneWayInvocation() { - if (isTargetRemote()) { - return getDistributedProvider().supportsOneWayInvocation(); - } else { - return false; - } - } - - private Invoker getInvoker(RuntimeWire wire, Operation operation) { - Endpoint target = wire.getEndpoint(); - if (target != null) { - RuntimeComponentService service = (RuntimeComponentService)target.getService(); - if (service != null) { // not a callback wire - SCABinding scaBinding = service.getBinding(SCABinding.class); - InvocationChain chain = - service.getInvocationChain(scaBinding, wire.getEndpointReference().getInterfaceContract(), operation); - return chain == null ? null : new SCABindingInvoker(chain); - } - } - return null; - } - - public Invoker createInvoker(Operation operation) { - if (isTargetRemote()) { - return getDistributedProvider().createInvoker(operation); - } else { - RuntimeWire wire = reference.getRuntimeWire(binding); - Invoker invoker = getInvoker(wire, operation); - if (invoker == null) { - throw new ServiceUnavailableException("Unable to create SCA binding invoker for local target " + component.getName() - + " reference " - + reference.getName() - + " (bindingURI=" - + binding.getURI() - + " operation=" - + operation.getName() - + ")" ); - } - return invoker; - } - } - - public void start() { - if (started) { - return; - } else { - started = true; - } - - if (getDistributedProvider() != null) { - distributedProvider.start(); - } - } - - public void stop() { - if (!started) { - return; - } else { - started = false; - } - - if (getDistributedProvider() != null) { - distributedProvider.stop(); - } - } - -} |