| /* |
| * 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.streams.client.command; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import java.util.Properties; |
| |
| import org.apache.kafka.clients.CommonClientConfigs; |
| import org.apache.kafka.clients.consumer.Consumer; |
| import org.apache.kafka.clients.consumer.ConsumerConfig; |
| import org.apache.kafka.clients.consumer.KafkaConsumer; |
| import org.apache.kafka.clients.producer.KafkaProducer; |
| import org.apache.kafka.clients.producer.Producer; |
| import org.apache.kafka.clients.producer.ProducerConfig; |
| import org.apache.kafka.common.serialization.StringDeserializer; |
| import org.apache.kafka.common.serialization.StringSerializer; |
| import org.apache.rya.streams.api.entity.StreamsQuery; |
| import org.apache.rya.streams.api.exception.RyaStreamsException; |
| import org.apache.rya.streams.api.interactor.AddQuery; |
| import org.apache.rya.streams.api.interactor.defaults.DefaultAddQuery; |
| import org.apache.rya.streams.api.queries.InMemoryQueryRepository; |
| import org.apache.rya.streams.api.queries.QueryChange; |
| import org.apache.rya.streams.api.queries.QueryChangeLog; |
| import org.apache.rya.streams.api.queries.QueryRepository; |
| import org.apache.rya.streams.client.RyaStreamsCommand; |
| import org.apache.rya.streams.kafka.KafkaTopics; |
| import org.apache.rya.streams.kafka.queries.KafkaQueryChangeLog; |
| import org.apache.rya.streams.kafka.serialization.queries.QueryChangeDeserializer; |
| import org.apache.rya.streams.kafka.serialization.queries.QueryChangeSerializer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.beust.jcommander.JCommander; |
| import com.beust.jcommander.Parameter; |
| import com.beust.jcommander.ParameterException; |
| import com.google.common.base.Strings; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * A command that adds a new query into Rya Streams. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| public class AddQueryCommand implements RyaStreamsCommand { |
| private static final Logger log = LoggerFactory.getLogger(AddQueryCommand.class); |
| |
| /** |
| * Command line parameters that are used by this command to configure itself. |
| */ |
| private class AddParameters extends RyaStreamsCommand.KafkaParameters { |
| @Parameter(names = { "--query", "-q" }, required = true, description = "The SPARQL query to add to Rya Streams.") |
| private String query; |
| |
| @Override |
| public String toString() { |
| final StringBuilder parameters = new StringBuilder(); |
| parameters.append(super.toString()); |
| parameters.append("\n"); |
| |
| if (!Strings.isNullOrEmpty(query)) { |
| parameters.append("\tQuery: " + query); |
| parameters.append("\n"); |
| } |
| return parameters.toString(); |
| } |
| } |
| |
| @Override |
| public String getCommand() { |
| return "add-query"; |
| } |
| |
| @Override |
| public String getDescription() { |
| return "Add a new query to Rya Streams."; |
| } |
| |
| @Override |
| public String getUsage() { |
| final JCommander parser = new JCommander(new AddParameters()); |
| |
| final StringBuilder usage = new StringBuilder(); |
| parser.usage(usage); |
| return usage.toString(); |
| } |
| |
| @Override |
| public void execute(final String[] args) throws ArgumentsException, ExecutionException { |
| requireNonNull(args); |
| |
| // Parse the command line arguments. |
| final AddParameters params = new AddParameters(); |
| try { |
| new JCommander(params, args); |
| } catch(final ParameterException e) { |
| throw new ArgumentsException("Could not add a new query because of invalid command line parameters.", e); |
| } |
| log.trace("Executing the Add Query Command\n" + params.toString()); |
| |
| // Create properties for interacting with Kafka. |
| final Properties producerProperties = new Properties(); |
| producerProperties.setProperty(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, params.kafkaIP + ":" + params.kafkaPort); |
| producerProperties.setProperty(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class.getName()); |
| producerProperties.setProperty(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, QueryChangeSerializer.class.getName()); |
| |
| final Properties consumerProperties = new Properties(); |
| consumerProperties.setProperty(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, params.kafkaIP + ":" + params.kafkaPort); |
| consumerProperties.setProperty(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class.getName()); |
| consumerProperties.setProperty(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, QueryChangeDeserializer.class.getName()); |
| |
| final Producer<?, QueryChange> queryProducer = new KafkaProducer<>(producerProperties); |
| final Consumer<?, QueryChange> queryConsumer = new KafkaConsumer<>(consumerProperties); |
| |
| final QueryChangeLog changeLog = new KafkaQueryChangeLog(queryProducer, queryConsumer, KafkaTopics.queryChangeLogTopic(params.ryaInstance)); |
| final QueryRepository repo = new InMemoryQueryRepository(changeLog); |
| |
| // Execute the add query command. |
| final AddQuery addQuery = new DefaultAddQuery(repo); |
| try { |
| final StreamsQuery query = addQuery.addQuery(params.query); |
| log.trace("Added query: " + query.getSparql()); |
| } catch (final RyaStreamsException e) { |
| log.error("Unable to parse query: " + params.query, e); |
| } |
| |
| log.trace("Finished executing the Add Query Command."); |
| } |
| } |