001/** 002 * Copyright 2014 DuraSpace, Inc. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.fcrepo.kernel.impl.rdf.impl; 017 018import static com.google.common.collect.ImmutableSet.builder; 019import static com.hp.hpl.jena.graph.NodeFactory.createLiteral; 020import static com.hp.hpl.jena.graph.NodeFactory.createURI; 021import static com.hp.hpl.jena.graph.Triple.create; 022import static com.hp.hpl.jena.rdf.model.ResourceFactory.createTypedLiteral; 023import static org.fcrepo.kernel.FedoraJcrTypes.ROOT; 024import static org.fcrepo.kernel.RdfLexicon.HAS_FIXITY_CHECK_COUNT; 025import static org.fcrepo.kernel.RdfLexicon.HAS_FIXITY_ERROR_COUNT; 026import static org.fcrepo.kernel.RdfLexicon.HAS_FIXITY_REPAIRED_COUNT; 027import static org.fcrepo.kernel.RdfLexicon.HAS_NODE_TYPE; 028import static org.fcrepo.kernel.RdfLexicon.REPOSITORY_NAMESPACE; 029import static org.slf4j.LoggerFactory.getLogger; 030 031import com.hp.hpl.jena.rdf.model.Resource; 032import org.fcrepo.kernel.models.FedoraResource; 033import org.fcrepo.kernel.identifiers.IdentifierConverter; 034import org.fcrepo.metrics.RegistryService; 035 036import java.util.Map; 037import java.util.SortedMap; 038 039import javax.jcr.Repository; 040import javax.jcr.RepositoryException; 041import javax.jcr.nodetype.NodeType; 042import javax.jcr.nodetype.NodeTypeIterator; 043import javax.jcr.nodetype.NodeTypeManager; 044 045import org.fcrepo.kernel.impl.services.functions.GetClusterConfiguration; 046import org.modeshape.jcr.JcrRepository; 047import org.slf4j.Logger; 048 049import com.codahale.metrics.Counter; 050import com.google.common.collect.ImmutableSet; 051import com.hp.hpl.jena.graph.Triple; 052 053/** 054 * Assemble {@link Triple}s derived from the root of a repository. 055 * 056 * @author ajs6f 057 * @since Oct 18, 2013 058 */ 059public class RootRdfContext extends NodeRdfContext { 060 061 private static final Logger LOGGER = getLogger(RootRdfContext.class); 062 static final RegistryService registryService = RegistryService.getInstance(); 063 064 /** 065 * Ordinary constructor. 066 * 067 * @param resource 068 * @param idTranslator 069 * @throws RepositoryException 070 */ 071 public RootRdfContext(final FedoraResource resource, 072 final IdentifierConverter<Resource, FedoraResource> idTranslator) 073 throws RepositoryException { 074 super(resource, idTranslator); 075 076 if (resource().hasType(ROOT)) { 077 concatRepositoryTriples(); 078 } 079 } 080 081 private void concatRepositoryTriples() throws RepositoryException { 082 LOGGER.trace("Creating RDF triples for repository description"); 083 final Repository repository = resource().getNode().getSession().getRepository(); 084 085 final ImmutableSet.Builder<Triple> b = builder(); 086 087 for (final String key : repository.getDescriptorKeys()) { 088 final String descriptor = repository.getDescriptor(key); 089 if (descriptor != null) { 090 final String uri = REPOSITORY_NAMESPACE + "repository." + key; 091 b.add(create(subject(), createURI(uri), 092 createLiteral(descriptor))); 093 } 094 } 095 final NodeTypeManager nodeTypeManager = 096 resource().getNode().getSession().getWorkspace().getNodeTypeManager(); 097 098 final NodeTypeIterator nodeTypes = nodeTypeManager.getAllNodeTypes(); 099 while (nodeTypes.hasNext()) { 100 final NodeType nodeType = nodeTypes.nextNodeType(); 101 b.add(create(subject(), HAS_NODE_TYPE.asNode(), 102 createLiteral(nodeType.getName()))); 103 } 104 105 /* 106 FIXME: removing because performance problems, esp. w/ many files on federated filesystem 107 see: https://www.pivotaltracker.com/story/show/78647248 108 109 b.add(create(subject(), HAS_OBJECT_COUNT.asNode(), createLiteral(String 110 .valueOf(getRepositoryCount(repository))))); 111 b.add(create(subject(), HAS_OBJECT_SIZE.asNode(), createLiteral(String 112 .valueOf(getRepositorySize(repository))))); 113 */ 114 115 // Get the cluster configuration, if available 116 // this ugly test checks to see whether this is an ordinary JCR 117 // repository or a ModeShape repo, which will possess the extra info 118 if (JcrRepository.class.isAssignableFrom(repository.getClass())) { 119 final Map<String, String> config = 120 new GetClusterConfiguration().apply(repository); 121 assert (config != null); 122 123 for (final Map.Entry<String, String> entry : config.entrySet()) { 124 b.add(create(subject(), createURI(REPOSITORY_NAMESPACE + entry.getKey()), 125 createLiteral(entry.getValue()))); 126 } 127 } 128 129 // retrieve the metrics from the service 130 final SortedMap<String, Counter> counters = registryService.getMetrics().getCounters(); 131 // and add the repository metrics to the RDF model 132 if (counters.containsKey("LowLevelStorageService.fixity-check-counter")) { 133 b.add(create(subject(), HAS_FIXITY_CHECK_COUNT.asNode(), 134 createTypedLiteral( 135 counters.get( 136 "org.fcrepo.services." 137 + "LowLevelStorageService." 138 + "fixity-check-counter") 139 .getCount()).asNode())); 140 } 141 142 if (counters.containsKey("LowLevelStorageService.fixity-error-counter")) { 143 b.add(create(subject(), HAS_FIXITY_ERROR_COUNT.asNode(), 144 createTypedLiteral( 145 counters.get( 146 "org.fcrepo.services." 147 + "LowLevelStorageService." 148 + "fixity-error-counter") 149 .getCount()).asNode())); 150 } 151 152 if (counters 153 .containsKey("LowLevelStorageService.fixity-repaired-counter")) { 154 b.add(create(subject(), HAS_FIXITY_REPAIRED_COUNT.asNode(), 155 createTypedLiteral( 156 counters.get( 157 "org.fcrepo.services." 158 + "LowLevelStorageService." 159 + "fixity-repaired-counter") 160 .getCount()).asNode())); 161 } 162 163 // offer all these accumulated triples 164 concat(b.build()); 165 } 166 167}