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Diffstat (limited to 'branches/sca-java-1.1/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java')
| -rw-r--r-- | branches/sca-java-1.1/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/branches/sca-java-1.1/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java b/branches/sca-java-1.1/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java deleted file mode 100644 index 2518853792..0000000000 --- a/branches/sca-java-1.1/modules/binding-sca/src/main/java/org/apache/tuscany/sca/binding/sca/impl/RuntimeSCAReferenceBindingProvider.java +++ /dev/null @@ -1,282 +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.impl; - -import java.net.URI; -import java.util.logging.Level; -import java.util.logging.Logger; - -import org.apache.tuscany.sca.assembly.OptimizableBinding; -import org.apache.tuscany.sca.assembly.SCABinding; -import org.apache.tuscany.sca.binding.sca.DistributedSCABinding; -import org.apache.tuscany.sca.core.ExtensionPointRegistry; -import org.apache.tuscany.sca.domain.SCADomainEventService; -import org.apache.tuscany.sca.interfacedef.InterfaceContract; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.invocation.Invoker; -import org.apache.tuscany.sca.node.NodeFactory; -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.EndpointReference; -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.osoa.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 final static Logger logger = Logger.getLogger(RuntimeSCAReferenceBindingProvider.class.getName()); - - private NodeFactory nodeFactory; - private RuntimeComponent component; - private RuntimeComponentReference reference; - private SCABinding binding; - private boolean started = false; - - private BindingProviderFactory<DistributedSCABinding> distributedProviderFactory = null; - private ReferenceBindingProvider distributedProvider = null; - - public RuntimeSCAReferenceBindingProvider(ExtensionPointRegistry extensionPoints, - NodeFactory nodeFactory, - RuntimeComponent component, - RuntimeComponentReference reference, - SCABinding binding) { - this.nodeFactory = nodeFactory; - this.component = component; - this.reference = reference; - this.binding = binding; - - // 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); - - - // determine if the target is remote. If we can tell now then this will - // do some initialization before we get to run time - //isTargetRemote(); - } - - public boolean isTargetRemote() { - boolean targetIsRemote = false; - - // first look at the target service and see if this has been resolved - OptimizableBinding optimizableBinding = (OptimizableBinding)binding; - - // The descision is based primary on the results of the wiring process in the assembly model - // however there are two notable situations when this process doesn't give the right answer - // 1. 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 - // 2. When a reference is retrieved from the domain. In this case the reference - // will not have been part of the original wiring process and will only have - // a target set if the target is local - if (optimizableBinding.getTargetComponentService() != null){ - if (optimizableBinding.getTargetComponentService().isUnresolved() == true) { - targetIsRemote = true; - } else { - targetIsRemote = false; - } - } else { - // deal with the case where the wire is completely dynamic (e.g. callbacks) and - // look at the provided URI to decide whether is a local or remote case - try { - URI uri = new URI(binding.getURI()); - if (uri.isAbsolute()) { - targetIsRemote = true; - } else { - // look in the domain to see if this referenced service is available on this node - // or on some other node - String serviceNode = null; - - SCADomainEventService domainProxy = (SCADomainEventService)nodeFactory.getNode().getDomain(); - - try { - serviceNode = - domainProxy.findServiceNode(nodeFactory.getNode().getDomain().getURI(), - binding.getURI(), - binding.getClass().getName()); - } catch (Exception ex) { - logger.log(Level.WARNING, - "Unable to contact domain to find service node. Service: " + - nodeFactory.getNode().getDomain().getURI() + " " + - nodeFactory.getNode().getURI() + " " + - binding.getURI() + " " + - SCABinding.class.getName()); - - } - - if (serviceNode.equals(domainProxy.SERVICE_NOT_KNOWN)){ - throw new IllegalStateException("Can't resolve : " + component.getName() - + " and reference: " - + reference.getName() - + " as the service " - + binding.getURI() - + " has not been contributed to the domain"); - } else if ((serviceNode.equals(domainProxy.SERVICE_NOT_REGISTERED)) || - (!serviceNode.equals(nodeFactory.getNode().getURI()))){ - targetIsRemote = true; - } 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().getInterface().isRemotable()) { - throw new IllegalStateException("Reference interface not remoteable 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()); - } - - if (nodeFactory.getNode() == null) { - throw new IllegalStateException("No distributed domain available for component: " + component - .getName() - + " and reference: " - + reference.getName()); - } - - // create the remote provider - DistributedSCABinding distributedBinding = new DistributedSCABindingImpl(); - distributedBinding.setSCABinging(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; - } - } - - /** - * @param wire - */ - private Invoker getInvoker(RuntimeWire wire, Operation operation) { - EndpointReference target = wire.getTarget(); - if (target != null) { - RuntimeComponentService service = (RuntimeComponentService)target.getContract(); - if (service != null) { // not a callback wire - SCABinding scaBinding = service.getBinding(SCABinding.class); - return service.getInvoker(scaBinding, wire.getSource().getInterfaceContract(), operation); - } - } - 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("Service not found for component " - + component.getName() - + " reference " - + reference.getName() - + " (bindingURI=" - + binding.getURI() - + " operation=" - + operation.getName() - + "). Ensure that the composite containing the service is loaded and " - + "started somewhere in the SCA domain and that if running in a " - + "remote node that the interface of the target service marked as @Remotable"); - } - 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(); - } - } - -} |