metron-streaming/Metron-MessageParsers/src/test/java/org/apache/metron/bolt/ParserBoltTest.java

/**
 * 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.metron.bolt;

import org.apache.metron.domain.Configurations;
import org.apache.metron.parser.interfaces.MessageFilter;
import org.apache.metron.parser.interfaces.MessageParser;
import org.apache.metron.writer.interfaces.MessageWriter;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.junit.Test;
import org.mockito.Mock;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

public class ParserBoltTest extends BaseBoltTest {

  @Mock
  private MessageParser<JSONObject> parser;

  @Mock
  private MessageWriter<JSONObject> writer;

  @Mock
  private MessageFilter<JSONObject> filter;

  @Test
  public void test() throws Exception {
    String sensorType = "yaf";
    ParserBolt parserBolt = new ParserBolt("zookeeperUrl", sensorType, parser, writer);
    parserBolt.setCuratorFramework(client);
    parserBolt.setTreeCache(cache);
    parserBolt.prepare(new HashMap(), topologyContext, outputCollector);
    verify(parser, times(1)).init();
    verify(writer, times(1)).init();
    byte[] sampleBinary = "some binary message".getBytes();
    JSONParser jsonParser = new JSONParser();
    final JSONObject sampleMessage1 = (JSONObject) jsonParser.parse("{ \"field1\":\"value1\" }");
    final JSONObject sampleMessage2 = (JSONObject) jsonParser.parse("{ \"field2\":\"value2\" }");
    List<JSONObject> messages = new ArrayList<JSONObject>() {{
      add(sampleMessage1);
      add(sampleMessage2);
    }};
    final JSONObject finalMessage1 = (JSONObject) jsonParser.parse("{ \"field1\":\"value1\", \"source.type\":\"" + sensorType + "\" }");
    final JSONObject finalMessage2 = (JSONObject) jsonParser.parse("{ \"field2\":\"value2\", \"source.type\":\"" + sensorType + "\" }");
    when(tuple.getBinary(0)).thenReturn(sampleBinary);
    when(parser.parse(sampleBinary)).thenReturn(messages);
    when(parser.validate(eq(messages.get(0)))).thenReturn(true);
    when(parser.validate(eq(messages.get(1)))).thenReturn(false);
    parserBolt.execute(tuple);
    verify(writer, times(1)).write(eq(sensorType), any(Configurations.class), eq(tuple), eq(finalMessage1));
    verify(outputCollector, times(1)).ack(tuple);
    when(parser.validate(eq(messages.get(0)))).thenReturn(true);
    when(parser.validate(eq(messages.get(1)))).thenReturn(true);
    when(filter.emitTuple(messages.get(0))).thenReturn(false);
    when(filter.emitTuple(messages.get(1))).thenReturn(true);
    parserBolt.withMessageFilter(filter);
    parserBolt.execute(tuple);
    verify(writer, times(1)).write(eq(sensorType), any(Configurations.class), eq(tuple), eq(finalMessage2));
    verify(outputCollector, times(2)).ack(tuple);
    doThrow(new Exception()).when(writer).write(eq(sensorType), any(Configurations.class), eq(tuple), eq(finalMessage2));
    parserBolt.execute(tuple);
    verify(outputCollector, times(1)).reportError(any(Throwable.class));
  }

}