gobblin.metrics.reporter.KafkaAvroEventReporterWithSchemaRegistryTest.java Source code

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Here is the source code for gobblin.metrics.reporter.KafkaAvroEventReporterWithSchemaRegistryTest.java

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/*
 * 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 gobblin.metrics.reporter;

import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.util.Map;

import org.apache.avro.Schema;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.testng.Assert;
import org.testng.annotations.Test;

import com.google.common.collect.Maps;

import gobblin.metrics.GobblinTrackingEvent;
import gobblin.metrics.MetricContext;
import gobblin.metrics.kafka.KafkaAvroEventReporter;
import gobblin.metrics.kafka.KafkaAvroSchemaRegistry;
import gobblin.metrics.kafka.KafkaEventReporter;
import gobblin.metrics.kafka.SchemaRegistryException;

public class KafkaAvroEventReporterWithSchemaRegistryTest {

    private final Map<String, Schema> schemas = Maps.newConcurrentMap();

    @Test
    public void test() throws Exception {

        MetricContext context = MetricContext.builder("context").build();

        MockKafkaPusher pusher = new MockKafkaPusher();
        KafkaAvroSchemaRegistry registry = Mockito.mock(KafkaAvroSchemaRegistry.class);
        Mockito.when(registry.register(Mockito.any(Schema.class))).thenAnswer(new Answer<String>() {
            @Override
            public String answer(InvocationOnMock invocation) throws Throwable {
                return register((Schema) invocation.getArguments()[0]);
            }
        });
        Mockito.when(registry.register(Mockito.any(Schema.class), Mockito.anyString()))
                .thenAnswer(new Answer<String>() {
                    @Override
                    public String answer(InvocationOnMock invocation) throws Throwable {
                        return register((Schema) invocation.getArguments()[0]);
                    }
                });
        KafkaEventReporter kafkaReporter = KafkaAvroEventReporter.forContext(context).withKafkaPusher(pusher)
                .withSchemaRegistry(registry).build("localhost:0000", "topic");

        GobblinTrackingEvent event = new GobblinTrackingEvent(0l, "namespace", "name",
                Maps.<String, String>newHashMap());

        context.submitEvent(event);

        try {
            Thread.sleep(100);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

        kafkaReporter.report();

        try {
            Thread.sleep(100);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

        byte[] nextMessage = pusher.messageIterator().next();
        DataInputStream is = new DataInputStream(new ByteArrayInputStream(nextMessage));
        Assert.assertEquals(is.readByte(), KafkaAvroSchemaRegistry.MAGIC_BYTE);
        byte[] readId = new byte[20];
        Assert.assertEquals(is.read(readId), 20);
        String readStringId = Hex.encodeHexString(readId);
        Assert.assertTrue(this.schemas.containsKey(readStringId));

        Schema schema = this.schemas.get(readStringId);
        Assert.assertFalse(schema.toString().contains("avro.java.string"));

        is.close();
    }

    private String register(Schema schema) throws SchemaRegistryException {
        String id = DigestUtils.sha1Hex(schema.toString().getBytes());
        this.schemas.put(id, schema);
        return id;
    }

}