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Factoring the generation of RDF triples related to the root context i…
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fcrepo-kernel/src/main/java/org/fcrepo/kernel/rdf/impl/RootRdfContext.java
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| /** | ||
| * Copyright 2013 DuraSpace, Inc. | ||
| * | ||
| * Licensed 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.fcrepo.kernel.rdf.impl; | ||
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| import static com.google.common.collect.ImmutableSet.builder; | ||
| import static com.hp.hpl.jena.graph.NodeFactory.createLiteral; | ||
| import static com.hp.hpl.jena.graph.NodeFactory.createURI; | ||
| import static com.hp.hpl.jena.graph.Triple.create; | ||
| import static com.hp.hpl.jena.rdf.model.ResourceFactory.createTypedLiteral; | ||
| import static org.fcrepo.kernel.RdfLexicon.HAS_FIXITY_CHECK_COUNT; | ||
| import static org.fcrepo.kernel.RdfLexicon.HAS_FIXITY_ERROR_COUNT; | ||
| import static org.fcrepo.kernel.RdfLexicon.HAS_FIXITY_REPAIRED_COUNT; | ||
| import static org.fcrepo.kernel.RdfLexicon.HAS_NODE_TYPE; | ||
| import static org.fcrepo.kernel.RdfLexicon.HAS_OBJECT_COUNT; | ||
| import static org.fcrepo.kernel.RdfLexicon.HAS_OBJECT_SIZE; | ||
| import static org.fcrepo.kernel.RdfLexicon.REPOSITORY_NAMESPACE; | ||
| import static org.fcrepo.kernel.utils.FedoraTypesUtils.getRepositoryCount; | ||
| import static org.fcrepo.kernel.utils.FedoraTypesUtils.getRepositorySize; | ||
| import static org.fcrepo.metrics.RegistryService.getMetrics; | ||
| import static org.slf4j.LoggerFactory.getLogger; | ||
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|
||
| import java.util.Map; | ||
| import java.util.SortedMap; | ||
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| import javax.jcr.Node; | ||
| import javax.jcr.Repository; | ||
| import javax.jcr.RepositoryException; | ||
| import javax.jcr.nodetype.NodeType; | ||
| import javax.jcr.nodetype.NodeTypeIterator; | ||
| import javax.jcr.nodetype.NodeTypeManager; | ||
|
|
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| import org.fcrepo.kernel.rdf.GraphSubjects; | ||
| import org.fcrepo.kernel.rdf.NodeRdfContext; | ||
| import org.fcrepo.kernel.services.LowLevelStorageService; | ||
| import org.fcrepo.kernel.services.functions.GetClusterConfiguration; | ||
| import org.modeshape.jcr.JcrRepository; | ||
| import org.slf4j.Logger; | ||
|
|
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| import com.codahale.metrics.Counter; | ||
| import com.google.common.collect.ImmutableSet; | ||
| import com.hp.hpl.jena.graph.Triple; | ||
|
|
||
| /** | ||
| * Assemble {@link Triple}s derived from the root {@link Node} of a repository. | ||
| * | ||
| * @author ajs6f | ||
| * @date Oct 18, 2013 | ||
| */ | ||
| public class RootRdfContext extends NodeRdfContext { | ||
|
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| private final static Logger LOGGER = getLogger(RootRdfContext.class); | ||
|
|
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| /** | ||
| * Ordinary constructor. | ||
| * | ||
| * @param node | ||
| * @param graphSubjects | ||
| * @param llsService | ||
| * @throws RepositoryException | ||
| */ | ||
| public RootRdfContext(final Node node, final GraphSubjects graphSubjects, | ||
| final LowLevelStorageService llsService) throws RepositoryException { | ||
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| super(node, graphSubjects, llsService); | ||
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| LOGGER.debug("Creating RDF triples for repository description"); | ||
| final Repository repository = node().getSession().getRepository(); | ||
|
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| final ImmutableSet.Builder<Triple> b = builder(); | ||
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| for (final String key : repository.getDescriptorKeys()) { | ||
| final String descriptor = repository.getDescriptor(key); | ||
| if (descriptor != null) { | ||
| final String uri = REPOSITORY_NAMESPACE + "repository/" + key; | ||
| b.add(create(subject(), createURI(uri), | ||
| createLiteral(descriptor))); | ||
| } | ||
| } | ||
| final NodeTypeManager nodeTypeManager = | ||
| node().getSession().getWorkspace().getNodeTypeManager(); | ||
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| final NodeTypeIterator nodeTypes = nodeTypeManager.getAllNodeTypes(); | ||
| while (nodeTypes.hasNext()) { | ||
| final NodeType nodeType = nodeTypes.nextNodeType(); | ||
| b.add(create(subject(), HAS_NODE_TYPE.asNode(), | ||
| createLiteral(nodeType.getName()))); | ||
| } | ||
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| b.add(create(subject(), HAS_OBJECT_COUNT.asNode(), createLiteral(String | ||
| .valueOf(getRepositoryCount(repository))))); | ||
| b.add(create(subject(), HAS_OBJECT_SIZE.asNode(), createLiteral(String | ||
| .valueOf(getRepositorySize(repository))))); | ||
|
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| // Get the cluster configuration, if available | ||
| // this ugly test checks to see whether this is an ordinary JCR | ||
| // repository or a ModeShape repo, which will possess the extra info | ||
| if (JcrRepository.class.isAssignableFrom(repository.getClass())) { | ||
| final Map<String, String> config = | ||
| new GetClusterConfiguration().apply(repository); | ||
| assert (config != null); | ||
|
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| for (final String key : config.keySet()) { | ||
| b.add(create(subject(), createURI(REPOSITORY_NAMESPACE + key), | ||
| createLiteral(config.get(key)))); | ||
| } | ||
| } | ||
|
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| // retrieve the metrics from the service | ||
| final SortedMap<String, Counter> counters = getMetrics().getCounters(); | ||
| // and add the repository metrics to the RDF model | ||
| if (counters.containsKey("LowLevelStorageService.fixity-check-counter")) { | ||
| b.add(create(subject(), HAS_FIXITY_CHECK_COUNT.asNode(), | ||
| createTypedLiteral( | ||
| counters.get( | ||
| "org.fcrepo.services." | ||
| + "LowLevelStorageService." | ||
| + "fixity-check-counter") | ||
| .getCount()).asNode())); | ||
| } | ||
|
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| if (counters.containsKey("LowLevelStorageService.fixity-error-counter")) { | ||
| b.add(create(subject(), HAS_FIXITY_ERROR_COUNT.asNode(), | ||
| createTypedLiteral( | ||
| counters.get( | ||
| "org.fcrepo.services." | ||
| + "LowLevelStorageService." | ||
| + "fixity-error-counter") | ||
| .getCount()).asNode())); | ||
| } | ||
|
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| if (counters | ||
| .containsKey("LowLevelStorageService.fixity-repaired-counter")) { | ||
| b.add(create(subject(), HAS_FIXITY_REPAIRED_COUNT.asNode(), | ||
| createTypedLiteral( | ||
| counters.get( | ||
| "org.fcrepo.services." | ||
| + "LowLevelStorageService." | ||
| + "fixity-repaired-counter") | ||
| .getCount()).asNode())); | ||
| } | ||
|
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| // offer all these accumulated triples | ||
| concat(b.build()); | ||
| } | ||
|
|
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| } |