com.metamx.tranquility.javatests.StormJavaApiTest.java Source code

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Metamarkets 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 com.metamx.tranquility.javatests;

import backtype.storm.task.IMetricsContext;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableList;
import com.metamx.common.Granularity;
import com.metamx.tranquility.beam.Beam;
import com.metamx.tranquility.beam.ClusteredBeamTuning;
import com.metamx.tranquility.druid.DruidBeams;
import com.metamx.tranquility.druid.DruidLocation;
import com.metamx.tranquility.druid.DruidRollup;
import com.metamx.tranquility.storm.BeamBolt;
import com.metamx.tranquility.storm.BeamFactory;
import com.metamx.tranquility.typeclass.JavaObjectWriter;
import com.metamx.tranquility.typeclass.Timestamper;
import com.twitter.finagle.Service;
import io.druid.granularity.QueryGranularity;
import io.druid.query.aggregation.AggregatorFactory;
import io.druid.query.aggregation.CountAggregatorFactory;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.RetryOneTime;
import org.apache.curator.test.TestingCluster;
import org.joda.time.DateTime;
import org.joda.time.Period;
import org.junit.Assert;
import org.junit.Test;

import javax.ws.rs.core.MediaType;
import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class StormJavaApiTest {
    private static final List<String> dimensions = ImmutableList.of("column");
    private static final List<AggregatorFactory> aggregators = ImmutableList
            .<AggregatorFactory>of(new CountAggregatorFactory("cnt"));

    public static class MyBeamFactory implements BeamFactory<Map<String, Object>> {
        @Override
        public Beam<Map<String, Object>> makeBeam(Map<?, ?> conf, IMetricsContext metrics) {
            try (final TestingCluster cluster = new TestingCluster(1);
                    final CuratorFramework curator = CuratorFrameworkFactory.builder()
                            .connectString(cluster.getConnectString()).retryPolicy(new RetryOneTime(1000))
                            .build()) {
                cluster.start();
                curator.start();

                final String dataSource = "hey";

                final DruidBeams.Builder<Map<String, Object>, Map<String, Object>> builder = DruidBeams
                        .builder(new Timestamper<Map<String, Object>>() {
                            @Override
                            public DateTime timestamp(Map<String, Object> theMap) {
                                return new DateTime(theMap.get("timestamp"));
                            }
                        }).curator(curator).discoveryPath("/test/discovery")
                        .location(
                                DruidLocation.create("druid:local:indexer", "druid:local:firehose:%s", dataSource))
                        .rollup(DruidRollup.create(dimensions, aggregators, QueryGranularity.MINUTE))
                        .tuning(ClusteredBeamTuning.builder().segmentGranularity(Granularity.HOUR)
                                .windowPeriod(new Period("PT10M")).build())
                        .objectWriter(new JavaObjectWriter<Map<String, Object>>() {
                            final ObjectMapper objectMapper = new ObjectMapper();

                            @Override
                            public byte[] asBytes(Map<String, Object> obj) {
                                try {
                                    return objectMapper.writeValueAsBytes(obj);
                                } catch (JsonProcessingException e) {
                                    throw Throwables.propagate(e);
                                }
                            }

                            @Override
                            public byte[] batchAsBytes(Iterator<Map<String, Object>> objects) {
                                try {
                                    return objectMapper.writeValueAsBytes(ImmutableList.of(objects));
                                } catch (JsonProcessingException e) {
                                    throw Throwables.propagate(e);
                                }
                            }

                            @Override
                            public String contentType() {
                                return MediaType.APPLICATION_JSON;
                            }
                        });

                final Service<List<Map<String, Object>>, Integer> service = builder.buildJavaService();
                Assert.assertNotNull(service);
                final Beam<Map<String, Object>> beam = builder.buildBeam();
                Assert.assertNotNull(beam);
                return beam;
            } catch (Exception e) {
                throw Throwables.propagate(e);
            }
        }
    }

    @Test
    public void testDruidBeamBoltConstruction() throws Exception {
        final BeamBolt<Map<String, Object>> beamBolt = new BeamBolt<>(new MyBeamFactory());

        // Ensure serializability
        final ObjectOutputStream objectOutputStream = new ObjectOutputStream(new ByteArrayOutputStream());
        objectOutputStream.writeObject(beamBolt);
        Assert.assertTrue(true);
    }
}