001/** 002 * Copyright 2015 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.modeshape.rdf.impl; 017 018import static com.google.common.collect.ImmutableSet.builder; 019import static com.hp.hpl.jena.graph.Triple.create; 020import static com.hp.hpl.jena.rdf.model.ResourceFactory.createTypedLiteral; 021import static org.fcrepo.kernel.api.RdfLexicon.HAS_FIXITY_CHECK_COUNT; 022import static org.fcrepo.kernel.api.RdfLexicon.HAS_FIXITY_ERROR_COUNT; 023import static org.fcrepo.kernel.api.RdfLexicon.HAS_FIXITY_REPAIRED_COUNT; 024import static org.fcrepo.kernel.modeshape.FedoraJcrConstants.ROOT; 025import static org.slf4j.LoggerFactory.getLogger; 026 027import com.hp.hpl.jena.rdf.model.Resource; 028import org.fcrepo.kernel.api.identifiers.IdentifierConverter; 029import org.fcrepo.kernel.api.models.FedoraResource; 030import org.fcrepo.metrics.RegistryService; 031 032import java.util.Map; 033import org.slf4j.Logger; 034 035import com.codahale.metrics.Counter; 036import com.google.common.collect.ImmutableSet; 037import com.hp.hpl.jena.graph.Triple; 038 039/** 040 * Assemble {@link Triple}s derived from the root of a repository. 041 * 042 * @author ajs6f 043 * @since Oct 18, 2013 044 */ 045public class RootRdfContext extends NodeRdfContext { 046 047 private static final String PREFIX = "org.fcrepo.services."; 048 private static final String FIXITY_REPAIRED_COUNTER = "LowLevelStorageService.fixity-repaired-counter"; 049 private static final String FIXITY_ERROR_COUNTER = "LowLevelStorageService.fixity-error-counter"; 050 private static final String FIXITY_CHECK_COUNTER = "LowLevelStorageService.fixity-check-counter"; 051 private static final Logger LOGGER = getLogger(RootRdfContext.class); 052 static final RegistryService registryService = RegistryService.getInstance(); 053 054 /** 055 * Ordinary constructor. 056 * 057 * @param resource the resource 058 * @param idTranslator the id translator 059 */ 060 public RootRdfContext(final FedoraResource resource, 061 final IdentifierConverter<Resource, FedoraResource> idTranslator) { 062 super(resource, idTranslator); 063 064 if (resource().hasType(ROOT)) { 065 concatRepositoryTriples(); 066 } 067 } 068 069 private void concatRepositoryTriples() { 070 LOGGER.trace("Creating RDF triples for repository description"); 071 072 final ImmutableSet.Builder<Triple> b = builder(); 073 074 /* 075 FIXME: removing due to performance problems, esp. w/ many files on federated filesystem 076 see: https://www.pivotaltracker.com/story/show/78647248 077 078 final Repository repository = session().getRepository(); 079 080 b.add(create(subject(), HAS_OBJECT_COUNT.asNode(), createLiteral(String 081 .valueOf(getRepositoryCount(repository))))); 082 b.add(create(subject(), HAS_OBJECT_SIZE.asNode(), createLiteral(String 083 .valueOf(getRepositorySize(repository))))); 084 */ 085 086 // retrieve the metrics from the service 087 final Map<String, Counter> counters = registryService.getMetrics().getCounters(); 088 // and add the repository metrics to the RDF model 089 if (counters.containsKey(FIXITY_CHECK_COUNTER)) { 090 b.add(create(subject(), HAS_FIXITY_CHECK_COUNT.asNode(), 091 createTypedLiteral(counters.get(PREFIX + FIXITY_CHECK_COUNTER).getCount()).asNode())); 092 } 093 094 if (counters.containsKey(FIXITY_ERROR_COUNTER)) { 095 b.add(create(subject(), HAS_FIXITY_ERROR_COUNT.asNode(), 096 createTypedLiteral(counters.get(PREFIX + FIXITY_ERROR_COUNTER).getCount()).asNode())); 097 } 098 099 if (counters.containsKey(FIXITY_REPAIRED_COUNTER)) { 100 b.add(create(subject(), HAS_FIXITY_REPAIRED_COUNT.asNode(), 101 createTypedLiteral(counters.get(PREFIX + FIXITY_REPAIRED_COUNTER).getCount()).asNode())); 102 } 103 104 // offer all these accumulated triples 105 concat(b.build()); 106 } 107}