| /** |
| * 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.rya.api.client.accumulo; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.fluo.api.client.FluoClient; |
| import org.apache.rya.api.client.DeletePCJ; |
| import org.apache.rya.api.client.GetInstanceDetails; |
| import org.apache.rya.api.client.InstanceDoesNotExistException; |
| import org.apache.rya.api.client.RyaClientException; |
| import org.apache.rya.api.instance.RyaDetails; |
| import org.apache.rya.api.instance.RyaDetails.PCJIndexDetails; |
| import org.apache.rya.api.instance.RyaDetails.PCJIndexDetails.FluoDetails; |
| import org.apache.rya.api.instance.RyaDetails.PCJIndexDetails.PCJDetails; |
| import org.apache.rya.api.instance.RyaDetails.PCJIndexDetails.PCJDetails.PCJUpdateStrategy; |
| import org.apache.rya.indexing.pcj.fluo.api.DeleteFluoPcj; |
| import org.apache.rya.indexing.pcj.storage.PrecomputedJoinStorage; |
| import org.apache.rya.indexing.pcj.storage.PrecomputedJoinStorage.PCJStorageException; |
| import org.apache.rya.indexing.pcj.storage.accumulo.AccumuloPcjStorage; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.Optional; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * An Accumulo implementation of the {@link DeletePCJ} command. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| public class AccumuloDeletePCJ extends AccumuloCommand implements DeletePCJ { |
| |
| private static final Logger log = LoggerFactory.getLogger(AccumuloDeletePCJ.class); |
| |
| private final GetInstanceDetails getInstanceDetails; |
| |
| /** |
| * Constructs an instance of {@link AccumuloDeletePCJ}. |
| * |
| * @param connectionDetails - Details about the values that were used to create the connector to the cluster. (not null) |
| * @param connector - Provides programatic access to the instance of Accumulo that hosts Rya instance. (not null) |
| */ |
| public AccumuloDeletePCJ(final AccumuloConnectionDetails connectionDetails, final Connector connector) { |
| super(connectionDetails, connector); |
| getInstanceDetails = new AccumuloGetInstanceDetails(connectionDetails, connector); |
| } |
| |
| @Override |
| public void deletePCJ(final String instanceName, final String pcjId) throws InstanceDoesNotExistException, RyaClientException { |
| requireNonNull(instanceName); |
| requireNonNull(pcjId); |
| |
| final Optional<RyaDetails> originalDetails = getInstanceDetails.getDetails(instanceName); |
| final boolean ryaInstanceExists = originalDetails.isPresent(); |
| if(!ryaInstanceExists) { |
| throw new InstanceDoesNotExistException(String.format("The '%s' instance of Rya does not exist.", instanceName)); |
| } |
| |
| final boolean pcjIndexingEnabeld = originalDetails.get().getPCJIndexDetails().isEnabled(); |
| if(!pcjIndexingEnabeld) { |
| throw new RyaClientException(String.format("The '%s' instance of Rya does not have PCJ Indexing enabled.", instanceName)); |
| } |
| |
| final boolean pcjExists = originalDetails.get().getPCJIndexDetails().getPCJDetails().containsKey( pcjId ); |
| if(!pcjExists) { |
| throw new RyaClientException(String.format("The '%s' instance of Rya does not have PCJ with ID '%s'.", instanceName, pcjId)); |
| } |
| |
| // If the PCJ was being maintained by a Fluo application, then stop that process. |
| final PCJIndexDetails pcjIndexDetails = originalDetails.get().getPCJIndexDetails(); |
| final PCJDetails droppedPcjDetails = pcjIndexDetails.getPCJDetails().get( pcjId ); |
| if(droppedPcjDetails.getUpdateStrategy().isPresent()) { |
| if(droppedPcjDetails.getUpdateStrategy().get() == PCJUpdateStrategy.INCREMENTAL) { |
| final Optional<FluoDetails> fluoDetailsHolder = pcjIndexDetails.getFluoDetails(); |
| |
| if(fluoDetailsHolder.isPresent()) { |
| final String fluoAppName = pcjIndexDetails.getFluoDetails().get().getUpdateAppName(); |
| stopUpdatingPCJ(fluoAppName, pcjId); |
| } else { |
| log.error(String.format("Could not stop the Fluo application from updating the PCJ because the Fluo Details are " + |
| "missing for the Rya instance named '%s'.", instanceName)); |
| } |
| } |
| } |
| |
| // Drop the table that holds the PCJ results from Accumulo. |
| try(final PrecomputedJoinStorage pcjs = new AccumuloPcjStorage(getConnector(), instanceName)) { |
| pcjs.dropPcj(pcjId); |
| } catch (final PCJStorageException e) { |
| throw new RyaClientException("Could not drop the PCJ's table from Accumulo.", e); |
| } |
| } |
| |
| private void stopUpdatingPCJ(final String fluoAppName, final String pcjId) { |
| requireNonNull(fluoAppName); |
| requireNonNull(pcjId); |
| |
| // Connect to the Fluo application that is updating this instance's PCJs. |
| final AccumuloConnectionDetails cd = super.getAccumuloConnectionDetails(); |
| try(final FluoClient fluoClient = new FluoClientFactory().connect( |
| cd.getUsername(), |
| new String(cd.getUserPass()), |
| cd.getInstanceName(), |
| cd.getZookeepers(), |
| fluoAppName)) { |
| // Delete the PCJ from the Fluo App. |
| try { |
| new DeleteFluoPcj(1000).deletePcj(fluoClient, pcjId); |
| } catch (Exception e) { |
| log.warn("PcjId corresponds to an invalid PCJ. The query cannot be deleted."); |
| } |
| } |
| } |
| } |