Sandbox to experiment with deployment and management commands.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@993560 13f79535-47bb-0310-9956-ffa450edef68

5 files changed, 464 insertions, 0 deletions

diff --git a/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/WSPolicy.java b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/WSPolicy.java
new file mode 100644
index 0000000000..6938b72d82
--- /dev/null
+++ b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/WSPolicy.java
@@ -0,0 +1,74 @@
+/*
+ * 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.policy.wspolicy;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.xml.namespace.QName;
+
+import org.apache.neethi.Policy;
+import org.apache.tuscany.sca.policy.PolicyContainer;
+
+/**
+ * The WS-Policy model. Currently defers to the Neethi policy model under the covers. 
+ */
+public class WSPolicy implements PolicyContainer {
+
+    public final static String WS_POLICY_NS = "http://schemas.xmlsoap.org/ws/2004/09/policy";
+    public final static String WS_POLICY = "Policy";
+
+    public final static QName WS_POLICY_QNAME = new QName(WS_POLICY_NS, WS_POLICY);
+
+    private Policy neethiPolicy;
+    private List<Object> policyAssertions = new ArrayList<Object>();
+
+    public QName getSchemaName() {
+        return WS_POLICY_QNAME;
+    }
+    
+    public Policy getNeethiPolicy() {
+        return neethiPolicy;
+    }
+    
+    public void setNeethiPolicy(Policy neethiPolicy) {
+        this.neethiPolicy = neethiPolicy;
+    }
+    
+    public List<Object> getPolicyAssertions(){
+        return policyAssertions;
+    }
+
+    @Override
+    public String toString() {
+        return "WSPolicy [" + neethiPolicy + "]";
+    }
+    
+    public <T> Object getChildPolicy(Class<T> policyType) {
+        for (Object alternative : policyAssertions){
+            for (Object policy : (List<Object>)alternative){
+                if (policyType.isInstance(policy)){
+                    return policy;
+                }
+            }
+        }
+        return null;
+    }
+}
diff --git a/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/WSPolicyBuilder.java b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/WSPolicyBuilder.java
new file mode 100644
index 0000000000..d6bd710ed9
--- /dev/null
+++ b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/WSPolicyBuilder.java
@@ -0,0 +1,173 @@
+/*
+ * 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.policy.wspolicy;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.xml.namespace.QName;
+
+import org.apache.neethi.Policy;
+import org.apache.tuscany.sca.assembly.Component;
+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.PolicyBuilder;
+import org.apache.tuscany.sca.policy.PolicyExpression;
+import org.apache.tuscany.sca.policy.PolicySet;
+import org.apache.tuscany.sca.policy.PolicySubject;
+
+/**
+ * Processing for WS-Policy objects
+ * TBD
+ */
+public class WSPolicyBuilder implements PolicyBuilder<Policy> {
+
+    public boolean build(Endpoint endpoint, BuilderContext context) {
+        List<WSPolicy> polices = getPolicies(endpoint);
+        System.out.println(endpoint + ": " + polices);
+        return true;
+    }
+
+    public boolean build(EndpointReference endpointReference, BuilderContext context) {
+        List<WSPolicy> polices = getPolicies(endpointReference);
+        System.out.println(endpointReference + ": " + polices);
+        return true;
+    }
+
+    public boolean build(Component component, Implementation implementation, BuilderContext context) {
+        List<WSPolicy> polices = getPolicies(implementation);
+        System.out.println(implementation + ": " + polices);
+        return true;
+    }
+
+    public QName getPolicyType() {
+        return WSPolicy.WS_POLICY_QNAME;
+    }
+    
+    public List<QName> getSupportedBindings() {
+        return null;
+    }    
+
+    public boolean build(EndpointReference endpointReference, Endpoint endpoint, BuilderContext context) {
+        
+        // TODO - neethi doesn't include code for matching ws policy 
+        //        cxf have the class Intersector http://svn.apache.org/repos/asf/cxf/trunk/api/src/main/java/org/apache/cxf/ws/policy/Intersector.java
+        //        but this does its work based on the cxf AssertionBuilders and extension
+        //        registry mechanism. I don't want to commit to that at the moment. 
+        //       
+        //        At the moment we do the simplest top level QName based matching
+               
+        // match EPR policy sets 
+        for (PolicySet eprPolicySet : endpointReference.getPolicySets()){
+            for (PolicySet epPolicySet : endpoint.getPolicySets()){
+                if (!build(eprPolicySet, epPolicySet)){
+                    return false;
+                }
+            }
+        }
+        
+        // match EP policy sets 
+        for (PolicySet epPolicySet : endpoint.getPolicySets()){
+            for (PolicySet eprPolicySet : endpointReference.getPolicySets()){
+                if (!build(epPolicySet, eprPolicySet)){
+                    return false;
+                }
+            }
+        }        
+        
+        return true;
+    }   
+    
+    private boolean build(PolicySet policySet1, PolicySet policySet2){
+        
+        // extract the ws policy expressions out of the policy sets
+        List<PolicyExpression> policyExpressions1 = new ArrayList<PolicyExpression>();
+        List<PolicyExpression> policyExpressions2 = new ArrayList<PolicyExpression>();
+        
+        for (PolicyExpression policyExpression : policySet1.getPolicies()){
+            if (policyExpression.getName().equals(getPolicyType())){
+                policyExpressions1.add(policyExpression);
+            }
+        }
+        
+        for (PolicyExpression policyExpression : policySet2.getPolicies()){
+            if (policyExpression.getName().equals(getPolicyType())){
+                policyExpressions2.add(policyExpression);
+            }
+        }
+        
+        // Match the first set of expressions against the second set
+        for (PolicyExpression policyExpression1 : policyExpressions1){
+            for (PolicyExpression policyExpression2 : policyExpressions2){
+                if (!build((WSPolicy)policyExpression1.getPolicy(), 
+                           (WSPolicy)policyExpression2.getPolicy())){
+                    return false;
+                }
+            }
+        }
+        
+        // TODO set the reference policy set to include an interception of the
+        //      ws policy sets discovered here
+        //      Do we really need to do this?
+        //      The method is called in both directions (reference to service and
+        //      service to reference) so would need to fix that
+        
+        return true;
+    }
+    
+    private List<WSPolicy> getPolicies(PolicySubject subject) {
+        List<WSPolicy> polices = new ArrayList<WSPolicy>();
+        for (PolicySet ps : subject.getPolicySets()) {
+            for (PolicyExpression exp : ps.getPolicies()) {
+                if (getPolicyType().equals(exp.getName())) {
+                    polices.add((WSPolicy)exp.getPolicy());
+                }
+            }
+        }
+        return polices;
+    }    
+    
+    private boolean build(WSPolicy wsPolicy1, WSPolicy wsPolicy2){
+        // TODO - cheating here as we assume a flat policy structure
+        //        we've read all the policy assertions into Tuscany models
+        //        in the reader (without taking account of alternatives)
+        //        so we just compare those here
+        //        The real implementation of this comparison depends on how
+        //        we decide to represent the ws policy hierarchy
+        
+        for (Object policyAssertion1 : wsPolicy1.getPolicyAssertions()){
+            boolean matched = false;
+            for (Object policyAssertion2 : wsPolicy2.getPolicyAssertions()){
+                if (policyAssertion1.getClass() == policyAssertion2.getClass()){
+                    matched = true;
+                    break;
+                }
+            }
+            if(!matched){
+                return false;
+            }
+        }
+        
+        return true;
+    }
+
+}
diff --git a/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/xml/WSPolicyProcessor.java b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/xml/WSPolicyProcessor.java
new file mode 100644
index 0000000000..48bf932c27
--- /dev/null
+++ b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/java/org/apache/tuscany/sca/policy/wspolicy/xml/WSPolicyProcessor.java
@@ -0,0 +1,180 @@
+/*
+ * 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.policy.wspolicy.xml;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLOutputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.axiom.om.OMElement;
+import org.apache.axiom.om.impl.builder.StAXOMBuilder;
+import org.apache.neethi.Constants;
+import org.apache.neethi.PolicyComponent;
+import org.apache.neethi.PolicyEngine;
+import org.apache.neethi.PolicyOperator;
+import org.apache.tuscany.sca.common.xml.stax.reader.XMLDocumentStreamReader;
+import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
+import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
+import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.StAXAttributeProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.policy.wspolicy.WSPolicy;
+
+/**
+ * Processor for handling xml models of PolicySet definitions
+ *
+ * @version $Rev$ $Date$
+ */
+public class WSPolicyProcessor extends BaseStAXArtifactProcessor implements
+    StAXArtifactProcessor<WSPolicy> {
+    
+    protected ExtensionPointRegistry registry;
+    protected StAXArtifactProcessor<Object> extensionProcessor;
+    protected StAXAttributeProcessor<Object> extensionAttributeProcessor;
+    protected XMLInputFactory inputFactory;
+    protected XMLOutputFactory outputFactory;
+
+    public WSPolicyProcessor(ExtensionPointRegistry registry,
+                             StAXArtifactProcessor extensionProcessor,
+                             StAXAttributeProcessor extensionAttributeProcessor) {
+        this.registry = registry;
+        this.extensionProcessor = extensionProcessor;
+        this.extensionAttributeProcessor = extensionAttributeProcessor;
+        
+        FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class);
+        this.inputFactory = modelFactories.getFactory(XMLInputFactory.class);
+        this.outputFactory = modelFactories.getFactory(XMLOutputFactory.class);
+    }
+
+    public QName getArtifactType() {
+        return WSPolicy.WS_POLICY_QNAME;
+    }
+
+    public Class<WSPolicy> getModelType() {
+        return WSPolicy.class;
+    }
+
+    public WSPolicy read(XMLStreamReader reader, ProcessorContext context)
+        throws ContributionReadException, XMLStreamException {
+        org.apache.neethi.Policy neethiPolicy = null;
+        XMLDocumentStreamReader doc = new XMLDocumentStreamReader(reader);
+        StAXOMBuilder builder = new StAXOMBuilder(doc);
+        OMElement element = builder.getDocumentElement();
+        neethiPolicy = PolicyEngine.getPolicy(element);
+        
+        WSPolicy wsPolicy = new WSPolicy();
+        wsPolicy.setNeethiPolicy(neethiPolicy);
+        
+        // normalize the neethi tree so we can easily identify
+        // the policy alternatives
+        neethiPolicy.normalize(true);
+        
+        // top-level children of ExactlyOne are policy alternatives so
+        // for each child create a policy model list and pull the 
+        // policies out
+        for(Object alternative : neethiPolicy.getPolicyComponents()) {
+            List<Object> assertions = new ArrayList<Object>();
+            readPolicyAssertions(assertions, (PolicyComponent)alternative, context);
+            wsPolicy.getPolicyAssertions().add(assertions);
+        }
+               
+        
+        return wsPolicy;
+    }
+    
+    private void readPolicyAssertions(List<Object> policyAssertions, PolicyComponent policyComponent, ProcessorContext context){
+        
+        // recurse into the policy alternatives
+        // TODO - lots of todos here as this just walks down the neethi hierarchy
+        //        looking for assertions to drive Tuscany processors without
+        //        regard to the policy alternatives. Undecided about whether to 
+        //        commit to prepresenting this hierarchy in Tuscany or whether
+        //        to rely on neethi
+        // Should this be in the builder? Not really as this drives the 
+        // Tuscany specific readers
+        if (policyComponent.getType() != Constants.TYPE_ASSERTION){
+            PolicyOperator policyOperator = (PolicyOperator)policyComponent;
+            for(Object childComponent : policyOperator.getPolicyComponents()){
+                // TODO - create assertion hierarchy in wsPolicy model
+                //        how we do this depends on if we continue to use neethi
+                readPolicyAssertions(policyAssertions, (PolicyComponent)childComponent, context);
+            }
+        } else {
+            try {
+                // TODO - not sure we should keep the neethi model but hack for the
+                //        time being to get Tuscany processors to process the OMElements
+                //        within the neethi model
+                ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+                XMLStreamWriter writer = outputFactory.createXMLStreamWriter(outputStream);
+                
+                policyComponent.serialize(writer);
+                
+                ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
+                XMLStreamReader reader = inputFactory.createXMLStreamReader(inputStream);
+
+                Object neethiAssertion = policyComponent;
+                Object tuscanyAssertion = extensionProcessor.read(reader, context);
+                
+                if (tuscanyAssertion != null) {
+                    policyAssertions.add(tuscanyAssertion);
+                } else {
+                    // add neethi assertion
+                    policyAssertions.add(neethiAssertion);
+                }
+            } catch (Exception ex) {
+                // TODO - report the error properly
+                ex.printStackTrace();
+            }
+        }
+    }
+
+    public void write(WSPolicy wsPolicy, XMLStreamWriter writer, ProcessorContext context)
+        throws ContributionWriteException, XMLStreamException {
+
+        // Write an <sca:policySet>
+        writer.writeStartElement(WSPolicy.WS_POLICY_NS, WSPolicy.WS_POLICY);
+
+        if (wsPolicy != null) {
+            wsPolicy.getNeethiPolicy().serialize(writer);
+        }
+
+        writer.writeEndElement();
+    }
+
+    public void resolve(WSPolicy wsPolicy, ModelResolver resolver, ProcessorContext context)
+        throws ContributionResolveException {
+        
+        // resolve policy assertions
+    }
+
+}
diff --git a/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/resources/META-INF/services/org.apache.tuscany.sca.assembly.builder.PolicyBuilder b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/resources/META-INF/services/org.apache.tuscany.sca.assembly.builder.PolicyBuilder
new file mode 100644
index 0000000000..e161411be3
--- /dev/null
+++ b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/resources/META-INF/services/org.apache.tuscany.sca.assembly.builder.PolicyBuilder
@@ -0,0 +1,17 @@
+# 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. 

+org.apache.tuscany.sca.policy.wspolicy.WSPolicyBuilder;qname=http://schemas.xmlsoap.org/ws/2004/09/policy#Policy

diff --git a/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
new file mode 100644
index 0000000000..745ad35871
--- /dev/null
+++ b/sandbox/sebastien/java/shell/modules/policy-wspolicy/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
@@ -0,0 +1,20 @@
+# 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. 

+

+# Implementation class for the artifact processor extension

+org.apache.tuscany.sca.policy.wspolicy.xml.WSPolicyProcessor;qname=http://schemas.xmlsoap.org/ws/2004/09/policy#Policy,model=org.apache.neethi.Policy

+