| /** |
| * 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.kafka.connect.accumulo; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import java.util.Map; |
| |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.accumulo.core.client.Instance; |
| import org.apache.accumulo.core.client.ZooKeeperInstance; |
| import org.apache.accumulo.core.client.security.tokens.PasswordToken; |
| import org.apache.kafka.connect.errors.ConnectException; |
| import org.apache.rya.accumulo.AccumuloRdfConfiguration; |
| import org.apache.rya.api.client.RyaClient; |
| import org.apache.rya.api.client.RyaClientException; |
| import org.apache.rya.api.client.accumulo.AccumuloConnectionDetails; |
| import org.apache.rya.api.client.accumulo.AccumuloRyaClientFactory; |
| import org.apache.rya.api.log.LogUtils; |
| import org.apache.rya.api.persist.RyaDAOException; |
| import org.apache.rya.kafka.connect.api.sink.RyaSinkTask; |
| import org.apache.rya.rdftriplestore.inference.InferenceEngineException; |
| import org.apache.rya.sail.config.RyaSailFactory; |
| import org.eclipse.rdf4j.sail.Sail; |
| import org.eclipse.rdf4j.sail.SailException; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * A {@link RyaSinkTask} that uses the Accumulo implementation of Rya to store data. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| public class AccumuloRyaSinkTask extends RyaSinkTask { |
| |
| @Override |
| protected void checkRyaInstanceExists(final Map<String, String> taskConfig) throws ConnectException { |
| requireNonNull(taskConfig); |
| |
| // Parse the configuration object. |
| final AccumuloRyaSinkConfig config = new AccumuloRyaSinkConfig(taskConfig); |
| |
| // Connect to the instance of Accumulo. |
| final Connector connector; |
| try { |
| final Instance instance = new ZooKeeperInstance(config.getClusterName(), config.getZookeepers()); |
| connector = instance.getConnector(config.getUsername(), new PasswordToken( config.getPassword() )); |
| } catch (final AccumuloException | AccumuloSecurityException e) { |
| throw new ConnectException("Could not create a Connector to the configured Accumulo instance.", e); |
| } |
| |
| // Use a RyaClient to see if the configured instance exists. |
| try { |
| final AccumuloConnectionDetails connectionDetails = new AccumuloConnectionDetails( |
| config.getUsername(), |
| config.getPassword().toCharArray(), |
| config.getClusterName(), |
| config.getZookeepers()); |
| final RyaClient client = AccumuloRyaClientFactory.build(connectionDetails, connector); |
| |
| if(!client.getInstanceExists().exists( config.getRyaInstanceName() )) { |
| throw new ConnectException("The Rya Instance named " + |
| LogUtils.clean(config.getRyaInstanceName()) + " has not been installed."); |
| } |
| |
| } catch (final RyaClientException e) { |
| throw new ConnectException("Unable to determine if the Rya Instance named " + |
| LogUtils.clean(config.getRyaInstanceName()) + " has been installed.", e); |
| } |
| } |
| |
| @Override |
| protected Sail makeSail(final Map<String, String> taskConfig) throws ConnectException { |
| requireNonNull(taskConfig); |
| |
| // Parse the configuration object. |
| final AccumuloRyaSinkConfig config = new AccumuloRyaSinkConfig(taskConfig); |
| |
| // Move the configuration into a Rya Configuration object. |
| final AccumuloRdfConfiguration ryaConfig = new AccumuloRdfConfiguration(); |
| ryaConfig.setTablePrefix( config.getRyaInstanceName() ); |
| ryaConfig.setAccumuloZookeepers( config.getZookeepers() ); |
| ryaConfig.setAccumuloInstance( config.getClusterName() ); |
| ryaConfig.setAccumuloUser( config.getUsername() ); |
| ryaConfig.setAccumuloPassword( config.getPassword() ); |
| ryaConfig.setFlush(false); |
| |
| // Create the Sail object. |
| try { |
| return RyaSailFactory.getInstance(ryaConfig); |
| } catch (SailException | AccumuloException | AccumuloSecurityException | RyaDAOException | InferenceEngineException e) { |
| throw new ConnectException("Could not connect to the Rya Instance named " + config.getRyaInstanceName(), e); |
| } |
| } |
| } |