1 files changed, 340 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.91/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionServiceImpl.java b/sca-java-1.x/branches/sca-java-0.91/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionServiceImpl.java
new file mode 100644
index 0000000000..73bf678e04
--- /dev/null
+++ b/sca-java-1.x/branches/sca-java-0.91/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionServiceImpl.java
@@ -0,0 +1,340 @@
+/*
+ * 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.contribution.service.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.ContributionFactory;
+import org.apache.tuscany.sca.contribution.DeployedArtifact;
+import org.apache.tuscany.sca.contribution.processor.PackageProcessor;
+import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionException;
+import org.apache.tuscany.sca.contribution.service.ContributionMetadataLoaderException;
+import org.apache.tuscany.sca.contribution.service.ContributionRepository;
+import org.apache.tuscany.sca.contribution.service.ContributionService;
+import org.apache.tuscany.sca.contribution.service.util.IOHelper;
+
+/**
+ * Service interface that manages artifacts contributed to a Tuscany runtime.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ContributionServiceImpl implements ContributionService {
+
+    /**
+     * Repository where contributions are stored. Usually set by injection.
+     */
+    private ContributionRepository contributionRepository;
+
+    /**
+     * Registry of available package processors.
+     */
+    private PackageProcessor packageProcessor;
+
+    /**
+     * Registry of available artifact processors
+     */
+
+    private URLArtifactProcessor artifactProcessor;
+
+    /**
+     * xml factory used to create reader instance to load contribution metadata
+     */
+    private XMLInputFactory xmlFactory;
+    
+    /**
+     * contribution metadata loader
+     */
+    private ContributionMetadataLoaderImpl contributionLoader;
+
+    /**
+     * Contribution registry This is a registry of processed Contributions indexed by URI
+     */
+    private Map<String, Contribution> contributionRegistry = new ConcurrentHashMap<String, Contribution>();
+
+    /**
+     * Contribution model facotry
+     */
+    private ContributionFactory contributionFactory;
+    
+    
+    public ContributionServiceImpl(ContributionRepository repository,
+                                   PackageProcessor packageProcessor,
+                                   URLArtifactProcessor artifactProcessor,
+                                   AssemblyFactory assemblyFactory,
+                                   ContributionFactory contributionFactory,
+                                   XMLInputFactory xmlFactory) {
+        super();
+        this.contributionRepository = repository;
+        this.packageProcessor = packageProcessor;
+        this.artifactProcessor = artifactProcessor;
+        this.xmlFactory = xmlFactory;
+
+        this.contributionFactory = contributionFactory;
+        this.contributionLoader = new ContributionMetadataLoaderImpl(assemblyFactory, contributionFactory);
+    }
+
+    public Contribution contribute(String contributionURI, URL sourceURL, ModelResolver modelResolver, boolean storeInRepository) throws ContributionException,
+        IOException {
+        if (contributionURI == null) {
+            throw new IllegalArgumentException("URI for the contribution is null");
+        }
+        if (sourceURL == null) {
+            throw new IllegalArgumentException("Source URL for the contribution is null");
+        }
+        
+        return addContribution(contributionURI, sourceURL, null, modelResolver, storeInRepository);
+    }
+
+    public Contribution contribute(String contributionURI, URL sourceURL, InputStream input, ModelResolver modelResolver) 
+        throws ContributionException, IOException {
+        
+        return addContribution(contributionURI, sourceURL, input, modelResolver, true);
+    }
+
+    private Contribution initializeContributionMetadata(URL sourceURL, ModelResolver modelResolver) throws ContributionException {
+        Contribution contributionMetadata = null;
+        URL contributionMetadataURL;
+        URL generatedContributionMetadataURL;
+        InputStream metadataStream = null;
+
+        URL[] clUrls = {sourceURL};
+        URLClassLoader cl = new URLClassLoader(clUrls, null);
+
+        contributionMetadataURL = cl.getResource(Contribution.SCA_CONTRIBUTION_META);
+        generatedContributionMetadataURL = cl.getResource(Contribution.SCA_CONTRIBUTION_GENERATED_META);
+
+        try {
+            contributionMetadata = this.contributionFactory.createContribution();
+            contributionMetadata.setModelResolver(modelResolver);
+            if (contributionMetadataURL != null || generatedContributionMetadataURL != null) {
+                URL metadataURL = contributionMetadataURL != null ? contributionMetadataURL
+                                                                 : generatedContributionMetadataURL;
+
+                try {
+                    metadataStream = metadataURL.openStream();
+                    XMLStreamReader xmlReader = this.xmlFactory.createXMLStreamReader(metadataStream);
+                    this.contributionLoader.load(contributionMetadata, xmlReader);
+
+                } catch (IOException ioe) {
+                    throw new InvalidContributionMetadataException(ioe.getMessage(), metadataURL.toExternalForm(), ioe);
+                } catch (XMLStreamException xmle) {
+                    throw new InvalidContributionMetadataException(xmle.getMessage(), metadataURL.toExternalForm(),
+                                                                   xmle);
+                } catch (ContributionMetadataLoaderException le) {
+                    throw new InvalidContributionMetadataException(le.getMessage(), metadataURL.toExternalForm(), le);
+                }
+            }
+        } finally {
+            IOHelper.closeQuietly(metadataStream);
+            metadataStream = null;
+        }
+
+        if (contributionMetadata == null) {
+            contributionMetadata = this.contributionFactory.createContribution();
+        }
+
+        return contributionMetadata;
+
+    }
+
+    public Contribution getContribution(String id) {
+        return this.contributionRegistry.get(id);
+    }
+
+    public void remove(String contribution) throws ContributionException {
+        this.contributionRegistry.remove(contribution);
+    }
+
+    public void addDeploymentComposite(Contribution contribution, Composite composite) throws ContributionException {
+        DeployedArtifact artifact = this.contributionFactory.createDeployedArtifact();
+        artifact.setURI(composite.getURI());
+        artifact.setModel(composite);
+
+        contribution.getArtifacts().add(artifact);
+
+        contribution.getDeployables().add(composite);
+    }
+
+    /**
+     * Utility/Helper methods for contribution service
+     */
+
+    /**
+     * Note:
+     * 
+     * @param contributionURI ContributionID
+     * @param sourceURL contribution location
+     * @param contributionStream contribution content
+     * @param storeInRepository flag if we store the contribution into the
+     *            repository or not
+     * @return the contribution model representing the contribution 
+     * @throws IOException
+     * @throws DeploymentException
+     */
+    private Contribution addContribution(String contributionURI,
+                                 URL sourceURL,
+                                 InputStream contributionStream,
+                                 ModelResolver modelResolver,
+                                 boolean storeInRepository) throws IOException, ContributionException {
+        
+        if (contributionStream == null && sourceURL == null) {
+            throw new IllegalArgumentException("The content of the contribution is null");
+        }
+
+        // store the contribution in the contribution repository
+        URL locationURL = sourceURL;
+        if (contributionRepository != null && storeInRepository) {
+            if (contributionStream == null) {
+                locationURL = contributionRepository.store(contributionURI, sourceURL);
+            } else {
+                locationURL = contributionRepository.store(contributionURI, sourceURL, contributionStream);
+            }
+        }
+
+        Contribution contribution = initializeContributionMetadata(locationURL, modelResolver);
+        contribution.setURI(contributionURI.toString());
+        contribution.setLocation(locationURL.toString());
+
+        List<URI> contributionArtifacts = null;
+
+        //NOTE: if a contribution is stored on the repository
+        //the stream would be consumed at this point
+        if (storeInRepository || contributionStream == null) {
+            contributionStream = sourceURL.openStream();
+            try {
+                // process the contribution
+                contributionArtifacts = this.packageProcessor.getArtifacts(locationURL, contributionStream);
+            } finally {
+                IOHelper.closeQuietly(contributionStream);
+                contributionStream = null;
+            }
+        } else {
+            // process the contribution
+            contributionArtifacts = this.packageProcessor.getArtifacts(locationURL, contributionStream);
+        }
+
+        // Read all artifacts in the contribution
+        processReadPhase(contribution, contributionArtifacts);
+        
+        // Resolve them
+        processResolvePhase(contribution);
+        
+        // Add all composites under META-INF/sca-deployables to the
+        // list of deployables
+        String prefix = Contribution.SCA_CONTRIBUTION_DEPLOYABLES;
+        for (DeployedArtifact artifact : contribution.getArtifacts()) {
+            if (artifact.getModel() instanceof Composite) {
+                if (artifact.getURI().startsWith(prefix)) {
+                    Composite composite = (Composite)artifact.getModel();
+                    if (!contribution.getDeployables().contains(composite)) {
+                        contribution.getDeployables().add(composite);
+                    }
+                }
+            }
+        }
+        
+        // store the contribution on the registry
+        this.contributionRegistry.put(contribution.getURI(), contribution);
+        
+        return contribution;
+    }
+
+    /**
+     * This utility method process each artifact and delegates to proper 
+     * artifactProcessor to read the model and generate the in-memory representation
+     *  
+     * @param contribution
+     * @param artifacts
+     * @throws ContributionException
+     * @throws MalformedURLException
+     */
+    private void processReadPhase(Contribution contribution, List<URI> artifacts) throws ContributionException,
+        MalformedURLException {
+        
+        ModelResolver modelResolver = contribution.getModelResolver();
+        URL contributionURL = new URL(contribution.getLocation()); 
+        for (URI a : artifacts) {
+            URL artifactURL = packageProcessor.getArtifactURL(new URL(contribution.getLocation()), a);
+            
+            // Add the deployed artifact model to the resolver
+            DeployedArtifact artifact = this.contributionFactory.createDeployedArtifact();
+            artifact.setURI(a.toString());
+            artifact.setLocation(artifactURL.toString());
+            contribution.getArtifacts().add(artifact);
+            modelResolver.addModel(artifact);
+
+            // Let the artifact processor read the artifact into a model
+            Object model = this.artifactProcessor.read(contributionURL, a, artifactURL);
+            if (model != null) {
+                artifact.setModel(model);
+                
+                // Add the loaded model to the model resolver
+                modelResolver.addModel(model);
+            }
+            
+        }
+    }
+
+    /**
+     * This utility method process each artifact and delegates to proper 
+     * artifactProcessor to resolve the model references
+     * 
+     * @param contribution
+     * @throws ContributionException
+     */
+    @SuppressWarnings("unchecked")
+    private void processResolvePhase(Contribution contribution) throws ContributionException {
+        // for each artifact that was processed on the contribution
+        for (DeployedArtifact artifact : contribution.getArtifacts()) {
+            // resolve the model object
+            if (artifact.getModel() != null) {
+                this.artifactProcessor.resolve(artifact.getModel(), contribution.getModelResolver());
+            }
+        }
+        
+        //resolve deployables from contribution metadata
+        List<Composite> resolvedDeployables = new ArrayList<Composite>();
+        for (Composite deployableComposite : contribution.getDeployables()) {
+            Composite resolvedDeployable = contribution.getModelResolver().resolveModel(Composite.class, deployableComposite);
+            resolvedDeployables.add(resolvedDeployable);
+        }
+        
+        contribution.getDeployables().clear();
+        contribution.getDeployables().addAll(resolvedDeployables);
+    }
+
+}