extensions-core/protobuf-extensions/src/test/java/org/apache/druid/data/input/protobuf/ProtobufInputFormatTest.java

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 * 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
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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package org.apache.druid.data.input.protobuf;

import com.fasterxml.jackson.databind.InjectableValues;
import com.fasterxml.jackson.databind.Module;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.Lists;
import org.apache.druid.data.input.InputRow;
import org.apache.druid.data.input.InputRowSchema;
import org.apache.druid.data.input.impl.ByteEntity;
import org.apache.druid.data.input.impl.DimensionsSpec;
import org.apache.druid.data.input.impl.NestedInputFormat;
import org.apache.druid.data.input.impl.StringDimensionSchema;
import org.apache.druid.data.input.impl.TimestampSpec;
import org.apache.druid.jackson.DefaultObjectMapper;
import org.apache.druid.java.util.common.parsers.JSONPathFieldSpec;
import org.apache.druid.java.util.common.parsers.JSONPathFieldType;
import org.apache.druid.java.util.common.parsers.JSONPathSpec;
import org.joda.time.DateTime;
import org.joda.time.chrono.ISOChronology;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import java.io.IOException;

public class ProtobufInputFormatTest
{
  @Rule
  public ExpectedException expectedException = ExpectedException.none();

  private TimestampSpec timestampSpec;
  private DimensionsSpec dimensionsSpec;
  private JSONPathSpec flattenSpec;
  private FileBasedProtobufBytesDecoder decoder;

  private final ObjectMapper jsonMapper = new DefaultObjectMapper();

  @Before
  public void setUp()
  {
    timestampSpec = new TimestampSpec("timestamp", "iso", null);
    dimensionsSpec = new DimensionsSpec(Lists.newArrayList(
        new StringDimensionSchema("event"),
        new StringDimensionSchema("id"),
        new StringDimensionSchema("someOtherId"),
        new StringDimensionSchema("isValid")
    ), null, null);
    flattenSpec = new JSONPathSpec(
        true,
        Lists.newArrayList(
            new JSONPathFieldSpec(JSONPathFieldType.ROOT, "eventType", "eventType"),
            new JSONPathFieldSpec(JSONPathFieldType.PATH, "foobar", "$.foo.bar"),
            new JSONPathFieldSpec(JSONPathFieldType.PATH, "bar0", "$.bar[0].bar")
        )
    );
    decoder = new FileBasedProtobufBytesDecoder("prototest.desc", "ProtoTestEvent");
    for (Module jacksonModule : new ProtobufExtensionsModule().getJacksonModules()) {
      jsonMapper.registerModule(jacksonModule);
    }
    jsonMapper.setInjectableValues(
        new InjectableValues.Std().addValue(ObjectMapper.class, new DefaultObjectMapper())
    );
  }

  @Test
  public void testSerde() throws IOException
  {
    ProtobufInputFormat inputFormat = new ProtobufInputFormat(
        flattenSpec,
        decoder
    );
    NestedInputFormat inputFormat2 = jsonMapper.readValue(
        jsonMapper.writeValueAsString(inputFormat),
        NestedInputFormat.class
    );

    Assert.assertEquals(inputFormat, inputFormat2);
  }

  @Test
  public void testSerdeForSchemaRegistry() throws IOException
  {
    ProtobufInputFormat inputFormat = new ProtobufInputFormat(
        flattenSpec,
        new SchemaRegistryBasedProtobufBytesDecoder("http://test:8081", 100, null, null, null, null)
    );
    NestedInputFormat inputFormat2 = jsonMapper.readValue(
        jsonMapper.writeValueAsString(inputFormat),
        NestedInputFormat.class
    );
    Assert.assertEquals(inputFormat, inputFormat2);
  }

  @Test
  public void testParseNestedData() throws Exception
  {
    //configure parser with desc file
    ProtobufInputFormat protobufInputFormat = new ProtobufInputFormat(flattenSpec, decoder);

    //create binary of proto test event
    DateTime dateTime = new DateTime(2012, 7, 12, 9, 30, ISOChronology.getInstanceUTC());
    ProtoTestEventWrapper.ProtoTestEvent event = ProtobufInputRowParserTest.buildNestedData(dateTime);

    final ByteEntity entity = new ByteEntity(ProtobufInputRowParserTest.toByteBuffer(event));

    InputRow row = protobufInputFormat.createReader(new InputRowSchema(timestampSpec, dimensionsSpec, null), entity, null).read().next();

    ProtobufInputRowParserTest.verifyNestedData(row, dateTime);
  }

  @Test
  public void testParseFlatData() throws Exception
  {
    //configure parser with desc file
    ProtobufInputFormat protobufInputFormat = new ProtobufInputFormat(null, decoder);

    //create binary of proto test event
    DateTime dateTime = new DateTime(2012, 7, 12, 9, 30, ISOChronology.getInstanceUTC());
    ProtoTestEventWrapper.ProtoTestEvent event = ProtobufInputRowParserTest.buildFlatData(dateTime);

    final ByteEntity entity = new ByteEntity(ProtobufInputRowParserTest.toByteBuffer(event));

    InputRow row = protobufInputFormat.createReader(new InputRowSchema(timestampSpec, dimensionsSpec, null), entity, null).read().next();

    ProtobufInputRowParserTest.verifyFlatData(row, dateTime);
  }
}