diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0-M5-RC3/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositePolicyBuilderImpl.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0-M5-RC3/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositePolicyBuilderImpl.java | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-M5-RC3/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositePolicyBuilderImpl.java b/sca-java-2.x/tags/2.0-M5-RC3/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositePolicyBuilderImpl.java new file mode 100644 index 0000000000..ea459bf2fa --- /dev/null +++ b/sca-java-2.x/tags/2.0-M5-RC3/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/CompositePolicyBuilderImpl.java @@ -0,0 +1,288 @@ +/* + * 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.Set; + +import javax.xml.namespace.QName; + +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.Endpoint; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.assembly.Implementation; +import org.apache.tuscany.sca.assembly.builder.BuilderContext; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilder; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException; +import org.apache.tuscany.sca.assembly.builder.PolicyBuilder; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.policy.Intent; + +/** + * A composite builder that computes policy sets based on attached intents and policy sets. + * Useful if you want to build the model without making any runtime decisions such as + * reference/services matching + * + * @version $Rev$ $Date$ + */ +public class CompositePolicyBuilderImpl extends ComponentPolicyBuilderImpl implements CompositeBuilder { + + private CompositeBuilder policyAppliesToBuilder = null; + + public CompositePolicyBuilderImpl(ExtensionPointRegistry registry) { + super(registry); + + policyAppliesToBuilder = new PolicyAppliesToBuilderImpl(registry); + } + + public String getID() { + return "org.apache.tuscany.sca.assembly.builder.CompositePolicyBuilder"; + } + + public Composite build(Composite composite, BuilderContext context) throws CompositeBuilderException { + computePolicies(composite, context); + checkPolicies(composite, context); + buildPolicies(composite, context); + return composite; + } + + protected void computePolicies(Composite composite, BuilderContext context) { + Monitor monitor = context.getMonitor(); + monitor.pushContext("Composite: " + composite.getName().toString()); + + try { + resolveAndCheck(composite, context); + + // compute policies recursively + for (Component component : composite.getComponents()) { + monitor.pushContext("Component: " + component.getName()); + + //resolve component level + resolveAndCheck(component, context); + + try { + Implementation implementation = component.getImplementation(); + + for (ComponentService componentService : component.getServices()) { + monitor.pushContext("Service: " + componentService.getName()); + + try { + resolveAndCheck(componentService, context); + + if (componentService.getInterfaceContract() != null) { + resolveAndCheck(componentService.getInterfaceContract().getInterface(), context); + + resolveAndCheck(componentService.getInterfaceContract().getCallbackInterface(), context); + + } + + for (Endpoint ep : componentService.getEndpoints()) { + if (componentService.getInterfaceContract() != null) { + // Inherit from the component.service.interface + inherit(ep, Intent.Type.interaction, true, componentService.getInterfaceContract().getInterface()); + } + + // Inherit from composite/component/service + inherit(ep, Intent.Type.interaction, true, composite, ep.getComponent(), ep.getService()); + + // Inherit from binding + inherit(ep, Intent.Type.interaction, true, ep.getBinding()); + + // Replace profile intents with their required intents + // Replace unqualified intents if there is a qualified intent in the list + // Replace qualifiable intents with the default qualied intent + resolveAndNormalize(ep, context); + + // Remove the intents whose @contraints do not include the current element + removeConstrainedIntents(ep, context); + + // check that all intents are resolved + checkIntentsResolved(ep, context); + + // check that the resulting endpoint has no mutually exclusive intents + checkMutualExclusion(ep, context); + } + } finally { + monitor.popContext(); + } + } + + for (ComponentReference componentReference : component.getReferences()) { + monitor.pushContext("Reference: " + componentReference.getName().toString()); + + try { + + if (componentReference.getInterfaceContract() != null) { + resolveAndCheck(componentReference.getInterfaceContract().getInterface(), context); + + resolveAndCheck(componentReference.getInterfaceContract().getCallbackInterface(), + context); + } + + for (EndpointReference epr : componentReference.getEndpointReferences()) { + + // Inherit from the component.reference.interface + if (componentReference.getInterfaceContract() != null) { + inherit(epr, Intent.Type.interaction, true, componentReference.getInterfaceContract().getInterface()); + } + + // Inherit from composite/component/reference + inherit(epr, Intent.Type.interaction, true, composite, epr.getComponent(), epr.getReference()); + + // Inherit from binding + inherit(epr, Intent.Type.interaction, true, epr.getBinding()); + + // Replace profile intents with their required intents + // Replace unqualified intents if there is a qualified intent in the list + // Replace qualifiable intents with the default qualified intent + resolveAndNormalize(epr, context); + + // Remove the intents whose @contraints do not include the current element + removeConstrainedIntents(epr, context); + + // check that all intents are resolved + checkIntentsResolved(epr, context); + + // check that the resulting endpoint reference has no mutually exclusive intents + checkMutualExclusion(epr, context); + } + } finally { + monitor.popContext(); + } + } + + if (implementation instanceof Composite) { + inherit(implementation, Intent.Type.implementation, true, component, composite); + checkIntentsResolved(implementation, context); + computePolicies((Composite)implementation, context); + } else { + resolveAndCheck(implementation, context); + if (implementation != null) { + inherit(implementation, Intent.Type.implementation, true, component, composite); + + // Remove the intents whose @contraints do not include the current element + removeConstrainedIntents(implementation, context); + + // check that all intents are resolved + checkIntentsResolved(implementation, context); + } + } + } finally { + monitor.popContext(); + } + } + } finally { + monitor.popContext(); + } + } + + /** + * This is mainly about removing policies that don't "applyTo" the element where + * they have ended up after all the attachment and inheritance processing + * + * @param composite + * @param context + */ + protected void checkPolicies(Composite composite, BuilderContext context) throws CompositeBuilderException{ + policyAppliesToBuilder.build(composite, context); + } + + protected void buildPolicies(Composite composite, BuilderContext context) { + + // build policies recursively + for (Component component : composite.getComponents()) { + Implementation implementation = component.getImplementation(); + if (implementation instanceof Composite) { + buildPolicies((Composite)implementation, context); + } + } + + for (Component component : composite.getComponents()) { + + for (ComponentService componentService : component.getServices()) { + for (Endpoint ep : componentService.getEndpoints()) { + Set<QName> policyNames = getPolicyNames(ep); + + // check that only one policy language is present in the endpoint's policy sets + if (policyNames.size() > 1){ + error(context.getMonitor(), + "MultiplePolicyLanguagesInEP", + this, + ep.toString(), + policyNames.toString()); + } else { + for (QName policyType : policyNames) { + PolicyBuilder builder = builders.getPolicyBuilder(policyType); + if (builder != null) { + builder.build(ep, context); + } + } + } + } + } + + for (ComponentReference componentReference : component.getReferences()) { + for (EndpointReference epr : componentReference.getEndpointReferences()) { + Set<QName> policyNames = getPolicyNames(epr); + + // check that only one policy language is present in the endpoint references's policy sets + if (policyNames.size() > 1){ + error(context.getMonitor(), + "MultiplePolicyLanguagesInEPR", + this, + epr.toString(), + policyNames.toString()); + } else { + for (QName policyType : policyNames) { + PolicyBuilder builder = builders.getPolicyBuilder(policyType); + if (builder != null) { + builder.build(epr, context); + } + } + } + } + } + + Implementation implementation = component.getImplementation(); + if (implementation != null) { + Set<QName> policyNames = getPolicyNames(implementation); + + // check that only one policy language is present in the implementations's policy sets + if (policyNames.size() > 1){ + error(context.getMonitor(), + "MultiplePolicyLanguagesInImplementation", + this, + component.toString(), + policyNames.toString()); + } else { + for (QName policyType : policyNames) { + PolicyBuilder builder = builders.getPolicyBuilder(policyType); + if (builder != null) { + builder.build(component, implementation, context); + } + } + } + } + } + } +} |