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Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/WireBuilderImpl.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/WireBuilderImpl.java | 1028 |
1 files changed, 1028 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/WireBuilderImpl.java b/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/WireBuilderImpl.java new file mode 100644 index 0000000000..21725fb1b1 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/WireBuilderImpl.java @@ -0,0 +1,1028 @@ +/* + * 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.builder.impl; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.assembly.Component; +import org.apache.tuscany.sca.assembly.ComponentReference; +import org.apache.tuscany.sca.assembly.ComponentService; +import org.apache.tuscany.sca.assembly.Composite; +import org.apache.tuscany.sca.assembly.CompositeReference; +import org.apache.tuscany.sca.assembly.Endpoint; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.assembly.Implementation; +import org.apache.tuscany.sca.assembly.Multiplicity; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.SCABinding; +import org.apache.tuscany.sca.assembly.Wire; +import org.apache.tuscany.sca.assembly.builder.BuilderContext; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException; +import org.apache.tuscany.sca.assembly.builder.Messages; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.core.UtilityExtensionPoint; +import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.policy.Intent; +import org.oasisopen.sca.ServiceRuntimeException; + +/** + * Creates endpoint reference models. + */ +public class WireBuilderImpl { + + private AssemblyFactory assemblyFactory; + private InterfaceContractMapper interfaceContractMapper; + + public WireBuilderImpl(ExtensionPointRegistry registry) { + UtilityExtensionPoint utilities = registry.getExtensionPoint(UtilityExtensionPoint.class); + interfaceContractMapper = utilities.getUtility(InterfaceContractMapper.class); + + FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class); + assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + } + + /** + * Create endpoint references for all component references. + * + * @param composite + */ + public Composite build(Composite composite, BuilderContext context) + throws CompositeBuilderException { + Monitor monitor = context.getMonitor(); + + // process component references + processComponentReferences(composite, monitor); + + // validate component references + validateComponentReferences(composite, monitor); + + return composite; + } + + private void processComponentReferences(Composite composite, Monitor monitor) { + + monitor.pushContext("Composite: " + composite.getName().toString()); + try { + // Index components, services and references + Map<String, Component> components = new HashMap<String, Component>(); + Map<String, ComponentService> componentServices = new HashMap<String, ComponentService>(); + Map<String, ComponentReference> componentReferences = new HashMap<String, ComponentReference>(); + indexComponentsServicesAndReferences(composite, components, componentServices, componentReferences); + + // Connect component references as described in wires + connectWires(composite, componentServices, componentReferences, monitor); + + // create endpoint references for each component's references + for (Component component : composite.getComponents()) { + monitor.pushContext("Component: " + component.getName()); + + try { + + // recurse for composite implementations + Implementation implementation = component.getImplementation(); + if (implementation instanceof Composite) { + processComponentReferences((Composite)implementation, monitor); + } + + // create endpoint references to represent the component reference + for (ComponentReference reference : component.getReferences()) { + createReferenceEndpointReferences(composite, + component, + reference, + components, + componentServices, + monitor); + + // fix up links between endpoints and endpoint references that represent callbacks + for (ComponentService service : component.getServices()) { + if ((service.getInterfaceContract() != null) && (service.getInterfaceContract() + .getCallbackInterface() != null)) { + if (reference.getName().equals(service.getName())) { + for (Endpoint endpoint : service.getEndpoints()) { + endpoint.getCallbackEndpointReferences().addAll(reference + .getEndpointReferences()); + } + break; + } // end if + } // end if + } // end for + + // push down endpoint references into the leaf component references + // in the case where this component reference promotes a reference from + // a composite implementation + pushDownEndpointReferences(composite, + component, + reference, + monitor); + + } // end for + + // Validate that references are wired or promoted, according + // to their multiplicity. This validates as we go and catches cases + // where a reference has been configured directly incorrectly with its + // immediate multiplicity setting. We re-run this validation again later + // to catch to more complex cases where reference promotion causes + // multiplicity errors. + validateReferenceMultiplicity(composite, component, monitor); + + } finally { + monitor.popContext(); + } + } // end for + + } finally { + monitor.popContext(); + } + + } // end method processCompoenntReferences + + + /** + * The validate stage is separate from the process stage as enpoint references are + * pushed down the hierarchy. We don't know the full set of endpoint references until + * all processing is complete. Hence we can't validate as we go + * + * @param composite + * @param monitor + */ + private void validateComponentReferences(Composite composite, Monitor monitor) { + + monitor.pushContext("Composite: " + composite.getName().toString()); + try { + // create endpoint references for each component's references + for (Component component : composite.getComponents()) { + monitor.pushContext("Component: " + component.getName()); + + try { + + // recurse for composite implementations + Implementation implementation = component.getImplementation(); + if (implementation instanceof Composite) { + validateComponentReferences((Composite)implementation, monitor); + } + // Validate that references are wired or promoted, according + // to their multiplicity + validateReferenceMultiplicity(composite, component, monitor); + + } finally { + monitor.popContext(); + } + } + + } finally { + monitor.popContext(); + } + + } + + protected void indexComponentsServicesAndReferences(Composite composite, + Map<String, Component> components, + Map<String, ComponentService> componentServices, + Map<String, ComponentReference> componentReferences) { + + for (Component component : composite.getComponents()) { + + // Index components by name + components.put(component.getName(), component); + + ComponentService nonCallbackService = null; + int nonCallbackServices = 0; + for (ComponentService componentService : component.getServices()) { + + // Index component services by component name / service name + String uri = component.getName() + '/' + componentService.getName(); + componentServices.put(uri, componentService); + + // count how many non-callback services there are + // if there is only one the component name also acts as the + // service name + if (!componentService.isForCallback()) { + // Check how many non callback non-promoted services we have + if (nonCallbackServices == 0) { + nonCallbackService = componentService; + } + nonCallbackServices++; + } + } + + if (nonCallbackServices == 1) { + // If we have a single non callback service, index it by + // component name as well + componentServices.put(component.getName(), nonCallbackService); + } + + // Index references by component name / reference name + for (ComponentReference componentReference : component.getReferences()) { + String uri = component.getName() + '/' + componentReference.getName(); + componentReferences.put(uri, componentReference); + } + } + } + + /** + * Resolve wires and connect the sources to their targets + * + * @param composite + * @param componentServices + * @param componentReferences + * @param problems + */ + private void connectWires(Composite composite, + Map<String, ComponentService> componentServices, + Map<String, ComponentReference> componentReferences, + Monitor monitor) { + + // For each wire, resolve the source reference, the target service, and + // add it to the list of targets of the reference + List<Wire> wires = composite.getWires(); + for (int i = 0, n = wires.size(); i < n; i++) { + Wire wire = wires.get(i); + + ComponentReference resolvedReference; + ComponentService resolvedService; + + // Resolve the source reference + ComponentReference source = wire.getSource(); + if (source != null && source.isUnresolved()) { + resolvedReference = componentReferences.get(source.getName()); + if (resolvedReference != null) { + wire.setSource(resolvedReference); + } else { + Monitor.warning(monitor, this, Messages.ASSEMBLY_VALIDATION, "WireSourceNotFound", source + .getName()); + } + } else { + resolvedReference = wire.getSource(); + } + + // Resolve the target service + ComponentService target = wire.getTarget(); + if (target != null && target.isUnresolved()) { + resolvedService = componentServices.get(target.getName()); + if (resolvedService != null) { + wire.setTarget(target); + } else { + Monitor.warning(monitor, this, Messages.ASSEMBLY_VALIDATION, "WireTargetNotFound", target + .getName()); + } + } else { + resolvedService = wire.getTarget(); + } + + // Add the target service to the list of targets of the + // reference + if (resolvedReference != null && resolvedService != null) { + // Check that the target component service provides + // a superset of + // the component reference interface + if (resolvedReference.getInterfaceContract() == null || interfaceContractMapper + .isCompatibleSubset(resolvedReference.getInterfaceContract(), resolvedService.getInterfaceContract())) { + + //resolvedReference.getTargets().add(resolvedService); + if (wire.isReplace()) { + resolvedReference.getTargets().clear(); + } + resolvedReference.getTargets().add(wire.getTarget()); + } else { + Monitor.warning(monitor, this, Messages.ASSEMBLY_VALIDATION, "WireIncompatibleInterface", source + .getName(), target.getName()); + } + } + } + + // Clear the list of wires + composite.getWires().clear(); + } + + private void createReferenceEndpointReferences(Composite composite, + Component component, + ComponentReference reference, + Map<String, Component> components, + Map<String, ComponentService> componentServices, + Monitor monitor) { + + monitor.pushContext("Reference: " + reference.getName()); + + // Get reference targets + List<ComponentService> refTargets = getReferenceTargets(reference); + if (Boolean.TRUE.equals(reference.getAutowire()) && reference.getTargets().isEmpty()) { + + // Find suitable targets in the current composite for an + // autowired reference + Multiplicity multiplicity = reference.getMultiplicity(); + for (Component targetComponent : composite.getComponents()) { + + // Tuscany specific selection of the first autowire reference + // when there are more than one (ASM_60025) + if ((multiplicity == Multiplicity.ZERO_ONE || multiplicity == Multiplicity.ONE_ONE) && (reference + .getEndpointReferences().size() != 0)) { + break; + } + + // Prevent autowire connecting to self + if (targetComponent == component) + continue; + + for (ComponentService targetComponentService : targetComponent.getServices()) { + if (reference.getInterfaceContract() == null || interfaceContractMapper.isCompatibleSubset(reference + .getInterfaceContract(), targetComponentService.getInterfaceContract())) { + + if (intentsMatch(reference.getRequiredIntents(), targetComponentService.getRequiredIntents())) { + EndpointReference endpointRef = createEndpointRef(component, reference, false); + endpointRef.setTargetEndpoint(createEndpoint(targetComponent, targetComponentService, true)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_FOUND_READY_FOR_MATCHING); + reference.getEndpointReferences().add(endpointRef); + + // Stop with the first match for 0..1 and 1..1 references + if (multiplicity == Multiplicity.ZERO_ONE || multiplicity == Multiplicity.ONE_ONE) { + break; + } // end if + } + + } // end if + } // end for + } // end for + + if (multiplicity == Multiplicity.ONE_N || multiplicity == Multiplicity.ONE_ONE) { + if (reference.getEndpointReferences().size() == 0) { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "NoComponentReferenceTarget", + reference.getName()); + } + } + + setSingleAutoWireTarget(reference); + + } else if (!refTargets.isEmpty()) { + // Check that the component reference does not mix the use of endpoint references + // specified via the target attribute with the presence of binding elements + if (bindingsIdentifyTargets(reference)) { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ReferenceEndPointMixWithTarget", + composite.getName().toString(), + component.getName(), + reference.getName()); + } + + // Resolve targets specified on the component reference + for (ComponentService target : refTargets) { + + String targetName = getComponentServiceName(target.getName()); + String bindingName = getBindingName(target.getName()); + ComponentService targetComponentService = componentServices.get(targetName); + + Component targetComponent = getComponentFromTargetName(components, targetName); + + if (targetComponentService != null) { + // Check that target component service provides a superset of the component reference interface + if (reference.getInterfaceContract() == null || interfaceContractMapper.isCompatibleSubset(reference + .getInterfaceContract(), targetComponentService.getInterfaceContract())) { + + if (bindingName != null) { + // the user has selected a binding as part of the target name + Binding targetBinding = null; + + for (Binding tmp : targetComponentService.getBindings()) { + if (tmp.getName().equals(bindingName)) { + targetBinding = tmp; + continue; + } + } + + if (targetBinding != null) { + EndpointReference endpointRef = createEndpointRef(component, reference, false); + endpointRef.setTargetEndpoint(createEndpoint(targetComponent, + targetComponentService, + targetBinding, + true)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_FOUND_AND_MATCHED); + // relying on the registry here to resolve the real endpoint + reference.getEndpointReferences().add(endpointRef); + + } else { + EndpointReference endpointRef = createEndpointRef(component, reference, true); + endpointRef.setTargetEndpoint(createEndpoint(component, targetName)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_NOT_FOUND); + reference.getEndpointReferences().add(endpointRef); + Monitor.warning(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ComponentReferenceTargetNotFound", + composite.getName().toString(), + targetName); + } + + } else { + // the user hasn't selected a binding as part of the target name + + EndpointReference endpointRef = createEndpointRef(component, reference, false); + endpointRef + .setTargetEndpoint(createEndpoint(targetComponent, targetComponentService, true)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_FOUND_READY_FOR_MATCHING); + reference.getEndpointReferences().add(endpointRef); + } + } else { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ReferenceIncompatibleInterface", + composite.getName().toString(), + component.getName() + "." + reference.getName(), + targetName); + } + } else { + // add an unresolved endpoint reference with an unresolved endpoint to go with it + EndpointReference endpointRef = createEndpointRef(component, reference, true); + endpointRef.setTargetEndpoint(createEndpoint(component, targetName)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_NOT_FOUND); + reference.getEndpointReferences().add(endpointRef); + Monitor.warning(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ComponentReferenceTargetNotFound", + composite.getName().toString(), + targetName); + } // end if + } // end for + } // end if + + // if no endpoints have found so far the bindings hold the targets. + if (reference.getEndpointReferences().isEmpty()) { + for (Binding binding : reference.getBindings()) { + + String uri = binding.getURI(); + + // user hasn't put a uri on the binding so it's not a target name and the assumption is that + // the target is established via configuration of the binding element itself + if (uri == null) { + // Regular forward references are UNWIRED with no endpoint if they have an SCABinding with NO targets + // and NO URI set - but Callbacks with an SCABinding are wired and need an endpoint + if (!reference.isForCallback() && (binding instanceof SCABinding)) + continue; + + // create endpoint reference for manually configured bindings with a resolved endpoint to + // signify that this reference is pointing at some unwired endpoint + EndpointReference endpointRef = createEndpointRef(component, reference, binding, null, false); + if (binding instanceof SCABinding) { + // Assume that the system needs to resolve this binding later as + // it's the SCA binding + endpointRef.setTargetEndpoint(createEndpoint(true)); + endpointRef.setStatus(EndpointReference.Status.NOT_CONFIGURED); + } else { + // The user has configured a binding so assume they know what + // they are doing and mark in as already resolved. + endpointRef.setTargetEndpoint(createEndpoint(false)); + endpointRef.setStatus(EndpointReference.Status.RESOLVED_BINDING); + } + reference.getEndpointReferences().add(endpointRef); + continue; + } // end if + + // user might have put a local target name in the uri - see if it refers to a target we know about + // - if it does the reference binding will be matched with a service binding + // - if it doesn't it is assumed to be an external reference + if (uri.startsWith("/")) { + uri = uri.substring(1); + } + + String targetName = getComponentServiceName(uri); + String bindingName = getBindingName(uri); + + // Resolve the target component and service + ComponentService targetComponentService = componentServices.get(targetName); + Component targetComponent = getComponentFromTargetName(components, targetName); + + // If the binding URI matches a component in the composite, configure an endpoint reference with + // this component as the target. + // If not, the binding URI is assumed to reference an external service + if (targetComponentService != null) { + + // Check that the target component service provides + // a superset of the component reference interface + if (reference.getInterfaceContract() == null || interfaceContractMapper.isCompatibleSubset(reference + .getInterfaceContract(), targetComponentService.getInterfaceContract())) { + if (bindingName != null) { + // the user has selected a binding as part of the target name + Binding targetBinding = null; + + for (Binding tmp : targetComponentService.getBindings()) { + if (tmp.getName().equals(bindingName)) { + targetBinding = tmp; + continue; + } + } + + if (targetBinding != null) { + EndpointReference endpointRef = createEndpointRef(component, reference, false); + endpointRef.setTargetEndpoint(createEndpoint(targetComponent, + targetComponentService, + targetBinding, + true)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_NOT_FOUND); + // relying on the registry here to resolve the real endpoint + reference.getEndpointReferences().add(endpointRef); + + } else { + EndpointReference endpointRef = createEndpointRef(component, reference, true); + endpointRef.setTargetEndpoint(createEndpoint(component, targetName)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_NOT_FOUND); + reference.getEndpointReferences().add(endpointRef); + Monitor.warning(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ComponentReferenceTargetNotFound", + composite.getName().toString(), + targetName); + } + + } else { + // create endpoint reference with dummy endpoint which will be replaced when policies + // are matched and bindings are configured later + EndpointReference endpointRef = + createEndpointRef(component, reference, binding, null, false); + endpointRef + .setTargetEndpoint(createEndpoint(targetComponent, targetComponentService, true)); + endpointRef.setStatus(EndpointReference.Status.WIRED_TARGET_FOUND_READY_FOR_MATCHING); + reference.getEndpointReferences().add(endpointRef); + } + } else { + Monitor.warning(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ReferenceIncompatibleInterface", + composite.getName().toString(), + reference.getName(), + uri); + } + } else { + // create endpoint reference for manually configured bindings with resolved endpoint + // to signify that this reference is pointing at some unwired endpoint. The endpoint + // is given the configured binding as a representation of the endpoint configuration. + EndpointReference endpointRef = createEndpointRef(component, reference, binding, null, false); + Endpoint endpoint = createEndpoint(false); + endpoint.setBinding(binding); + endpointRef.setTargetEndpoint(endpoint); + endpointRef.setStatus(EndpointReference.Status.RESOLVED_BINDING); + reference.getEndpointReferences().add(endpointRef); + } // end if + } + } + + monitor.popContext(); + + } // end method + + private boolean intentsMatch(List<Intent> referenceIntents, List<Intent> serviceIntents) { + Set<Intent> referenceIntentSet = new HashSet<Intent>(referenceIntents); + Set<Intent> serviceIntentSet = new HashSet<Intent>(serviceIntents); + return referenceIntentSet.equals(serviceIntentSet); + } + + /** + * Reference targets have to be resolved in the context in which they are + * defined so they can't be push down the hierarchy during the static build. + * So we wait until we have calculated the enpoint references before pushing them + * down. Muliplicity errors will be caught by the multiplicity validation check that + * comes next + * + * @param composite + * @param component + * @param reference + * @param monitor + */ + private void pushDownEndpointReferences(Composite composite, + Component component, + ComponentReference componentReference, + Monitor monitor) { + Reference reference = componentReference.getReference(); + + if (reference instanceof CompositeReference) { + List<ComponentReference> leafComponentReferences = getPromotedComponentReferences((CompositeReference)reference); + + // for each leaf component reference copy in the endpoint references for this + // higher level (promoting) reference + // TODO - the elements are inserted starting at 0 here because the code allows references multiplicity + // validation constraints to be broken if the reference is autowire. At runtime the + // first one is chosen if max multiplicity is 1. We have an OSOA test that assumes that + // promoted references overwrite leaf references. This insert gives the same effect in the + // autowire case. We need to think about if there is a more correct answer. + for (ComponentReference leafRef : leafComponentReferences){ + int insertLocation = 0; + for (EndpointReference epr : componentReference.getEndpointReferences()){ + // copy the epr + EndpointReference eprCopy = copyHigherReference(epr, leafRef); + leafRef.getEndpointReferences().add(insertLocation, eprCopy); + insertLocation++; + } + } + } + + // TODO - what to do about callbacks in the reference promotion case + } + + /** + * Follow a reference promotion chain down to the innermost (non composite) + * component references. + * + * @param compositeReference + * @return + */ + private List<ComponentReference> getPromotedComponentReferences(CompositeReference compositeReference) { + List<ComponentReference> componentReferences = new ArrayList<ComponentReference>(); + collectPromotedComponentReferences(compositeReference, componentReferences); + return componentReferences; + } + + /** + * Follow a reference promotion chain down to the innermost (non composite) + * component references. + * + * @param compositeReference + * @param componentReferences + * @return + */ + private void collectPromotedComponentReferences(CompositeReference compositeReference, + List<ComponentReference> componentReferences) { + for (ComponentReference componentReference : compositeReference.getPromotedReferences()) { + Reference reference = componentReference.getReference(); + if (reference instanceof CompositeReference) { + + // Continue to follow the reference promotion chain + collectPromotedComponentReferences((CompositeReference)reference, componentReferences); + + } else if (reference != null) { + + // Found a non-composite reference + componentReferences.add(componentReference); + } + } + } + + /** + * Copy a higher level EndpointReference down to a lower level reference which it promotes + * @param epRef - the endpoint reference + * @param promotedReference - the promoted reference + * @return - a copy of the EndpointReference with data merged from the promoted reference + */ + private EndpointReference copyHigherReference(EndpointReference epRef, ComponentReference promotedReference) { + EndpointReference epRefClone = null; + try { + epRefClone = (EndpointReference)epRef.clone(); + } catch (Exception e) { + throw new ServiceRuntimeException(e); + // Ignore (we know that EndpointReference2 can be cloned) + } // end try + // Copy across details of the inner reference + // ComponentReference ref = epRefClone.getReference(); + //FIXME + epRefClone.setReference(promotedReference); + return epRefClone; + } + + private void validateReferenceMultiplicity(Composite composite, Component component, Monitor monitor) { + for (ComponentReference componentReference : component.getReferences()) { + if (!validateMultiplicity(componentReference.getMultiplicity(), + componentReference.getEndpointReferences())) { + if (componentReference.getEndpointReferences().isEmpty()) { + + // No error if the reference is promoted out of the current composite + boolean promoted = false; + for (Reference reference : composite.getReferences()) { + CompositeReference compositeReference = (CompositeReference)reference; + if (compositeReference.getPromotedReferences().contains(componentReference)) { + promoted = true; + break; + } + } + if (!promoted && !componentReference.isForCallback() && !componentReference.isWiredByImpl()) { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "ReferenceWithoutTargets", + composite.getName().toString(), + componentReference.getName()); + } + } else { + // no error if reference is autowire and more targets + // than multiplicity have been found + if (Boolean.TRUE.equals(componentReference.getAutowire())) { + break; + } + + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "TooManyReferenceTargets", + componentReference.getName()); + } + } + } + + } + + private boolean validateMultiplicity(Multiplicity multiplicity, List<EndpointReference> endpointReferences) { + + // In some tests multiplicity is not set + if (multiplicity == null) { + return true; + } + + // Count targets + int count = endpointReferences.size(); + + switch (multiplicity) { + case ZERO_N: + break; + case ZERO_ONE: + if (count > 1) { + return false; + } + break; + case ONE_ONE: + if (count != 1) { + return false; + } + break; + case ONE_N: + if (count < 1) { + return false; + } + break; + } + return true; + } + + /** + * Evaluates whether the bindings attached to a reference identify one or more target services. + * @param reference - the reference + * @return true if the bindings identify a target, false otherwise + */ + private boolean bindingsIdentifyTargets(ComponentReference reference) { + for (Binding binding : reference.getBindings()) { + // <binding.sca without a URI does not identify a target + if ((binding instanceof SCABinding) && (binding.getURI() == null)) + continue; + // any other binding implies a target + // TODO Processing for other binding types + return true; + } // end for + return false; + } // end bindingsIdentifyTargets + + /** + * Helper method which obtains a list of targets for a reference + * @param reference - Component reference + * @return - the list of targets, which will be empty if there are no targets + */ + private List<ComponentService> getReferenceTargets(ComponentReference reference) { + List<ComponentService> theTargets = reference.getTargets(); + if (theTargets.isEmpty()) { + // Component reference list of targets is empty, try the implementation reference + if (reference.getReference() != null) { + theTargets = reference.getReference().getTargets(); + } // end if + } // end if + return theTargets; + } // end method getReferenceTargets + + /** + * Target names can take the form + * component/service/binding + * This extracts the component/service part + * + * @param targetName + * @return String the component/service name + */ + private String getComponentServiceName(String targetName) { + String[] parts = targetName.split("/"); + + if (parts.length > 1) { + return parts[0] + "/" + parts[1]; + } else { + return parts[0]; + } + } + + /** + * Target names can take the form + * component/service/binding + * This extracts the binding part and returns + * it. If there is no binding part it returns null + * + * @param targetName + * @return String the binding name or null if there is no binding name + */ + private String getBindingName(String targetName) { + String[] parts = targetName.split("/"); + + if (parts.length == 3) { + return parts[2]; + } else { + return null; + } + } + + /** + * Helper method that finds the Component given a target name + * @param components + * @param targetName + * @return the component + */ + private Component getComponentFromTargetName(Map<String, Component> components, String targetName) { + Component theComponent; + int s = targetName.indexOf('/'); + if (s == -1) { + theComponent = components.get(targetName); + } else { + theComponent = components.get(targetName.substring(0, s)); + } + return theComponent; + } // end method getComponentFromTargetName + + /** + * Helper method to create an Endpoint Reference + * @param component + * @param reference + * @param binding + * @param endpoint + * @param unresolved + * @return the endpoint reference + */ + private EndpointReference createEndpointRef(Component component, + ComponentReference reference, + Binding binding, + Endpoint endpoint, + boolean unresolved) { + EndpointReference endpointRef = createEndpointRef(component, reference, unresolved); + endpointRef.setBinding(binding); + endpointRef.setTargetEndpoint(endpoint); + return endpointRef; + } // end method + + /** + * Helper method to create an Endpoint Reference + * @param component + * @param reference + * @param unresolved + * @return the endpoint reference + */ + private EndpointReference createEndpointRef(Component component, ComponentReference reference, boolean unresolved) { + EndpointReference endpointRef = assemblyFactory.createEndpointReference(); + endpointRef.setComponent(component); + endpointRef.setReference(reference); + endpointRef.setUnresolved(unresolved); + return endpointRef; + } // end method createEndpointRef + + /** + * Helper method to create an endpoint + * @param component + * @param service + * @param unresolved + * @return the endpoint + */ + private Endpoint createEndpoint(Component component, ComponentService service, boolean unresolved) { + Endpoint endpoint = createEndpoint(unresolved); + endpoint.setComponent(component); + endpoint.setService(service); + endpoint.setUnresolved(unresolved); + return endpoint; + } // end method createEndpoint + + /** + * Helper method to create an endpoint + * @param component + * @param service + * @param binding + * @param unresolved + * @return the endpoint + */ + private Endpoint createEndpoint(Component component, ComponentService service, Binding binding, boolean unresolved) { + Endpoint endpoint = createEndpoint(unresolved); + endpoint.setComponent(component); + endpoint.setService(service); + endpoint.setBinding(binding); + endpoint.setUnresolved(unresolved); + return endpoint; + } // end method createEndpoint + + /** + * Helper method to create an Endpoint + * @param unresolved + * @return the endpoint + */ + private Endpoint createEndpoint(boolean unresolved) { + Endpoint endpoint = assemblyFactory.createEndpoint(); + endpoint.setUnresolved(unresolved); + return endpoint; + } // end method createEndpoint + + /** + * Helper method to create an Endpoint + * + * @param component The component that owns the reference + * @param targetName It can be one of the following formats + * <ul> + * <li>componentName + * <li>componentName/serviceName + * <li>componentName/serviceName/bindingName + * </ul> + * @return the endpoint + */ + private Endpoint createEndpoint(Component component, String targetName) { + String[] parts = targetName.split("/"); + if (parts.length < 1 || parts.length > 3) { + throw new IllegalArgumentException("Invalid target URI: " + targetName); + } + + // Find the parent uri + String uri = component.getURI(); + int index = uri.lastIndexOf('/'); + if (index == -1) { + uri = ""; + } else { + uri = uri.substring(0, index); + } + + if (parts.length >= 1) { + // Append the target component name + if (uri.length() == 0) { + uri = parts[0]; + } else { + uri = uri + "/" + parts[0]; + } + } + if (parts.length == 3) { + // <componentURI>#service-binding(serviceName/bindingName) + uri = uri + "#service-binding(" + parts[1] + "/" + parts[2] + ")"; + } else if (parts.length == 2) { + // <componentURI>#service(serviceName) + uri = uri + "#service(" + parts[1] + ")"; + } + + Endpoint endpoint = assemblyFactory.createEndpoint(); + endpoint.setUnresolved(true); + endpoint.setURI(uri); + return endpoint; + } // end method createEndpoint + + /** + * ASM_5021: where a <reference/> of a <component/> has @autowire=true + * and where the <reference/> has a <binding/> child element which + * declares a single target service, the reference is wired only to + * the single service identified by the <wire/> element + */ + private void setSingleAutoWireTarget(ComponentReference reference) { + if (reference.getEndpointReferences().size() > 1 && reference.getBindings() != null + && reference.getBindings().size() == 1) { + String uri = reference.getBindings().get(0).getURI(); + if (uri != null) { + if (uri.indexOf('/') > -1) { + // TODO: must be a way to avoid this fiddling + int i = uri.indexOf('/'); + String c = uri.substring(0, i); + String s = uri.substring(i + 1); + uri = c + "#service(" + s + ")"; + } + for (EndpointReference er : reference.getEndpointReferences()) { + if (er.getTargetEndpoint() != null && uri.equals(er.getTargetEndpoint().getURI())) { + reference.getEndpointReferences().clear(); + reference.getEndpointReferences().add(er); + return; + } + } + } + } + } + +} // end class |