zipkin2.collector.rabbitmq.ITRabbitMQCollector.java Source code

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Here is the source code for zipkin2.collector.rabbitmq.ITRabbitMQCollector.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 zipkin2.collector.rabbitmq;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeoutException;

import com.rabbitmq.client.Channel;
import org.junit.After;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import zipkin2.Span;
import zipkin2.codec.SpanBytesEncoder;
import zipkin2.collector.CollectorMetrics;
import zipkin2.storage.InMemoryStorage;

import static org.assertj.core.api.Java6Assertions.assertThat;
import static zipkin2.TestObjects.LOTS_OF_SPANS;
import static zipkin2.collector.rabbitmq.RabbitMQCollector.builder;

public class ITRabbitMQCollector {
    List<Span> spans = Arrays.asList(LOTS_OF_SPANS[0], LOTS_OF_SPANS[1]);

    @ClassRule
    public static RabbitMQCollectorRule rabbit = new RabbitMQCollectorRule("rabbitmq:3.6-alpine");

    @After
    public void clear() {
        rabbit.metrics.clear();
        rabbit.storage.clear();
    }

    @Rule
    public ExpectedException thrown = ExpectedException.none();

    @Test
    public void checkPasses() {
        assertThat(rabbit.collector.check().ok()).isTrue();
    }

    @Test
    public void startFailsWithInvalidRabbitMqServer() throws Exception {
        // we can be pretty certain RabbitMQ isn't running on localhost port 80
        String notRabbitMqAddress = "localhost:80";
        try (RabbitMQCollector collector = builder().addresses(Collections.singletonList(notRabbitMqAddress))
                .build()) {
            thrown.expect(IllegalStateException.class);
            thrown.expectMessage("Unable to establish connection to RabbitMQ server");
            collector.start();
        }
    }

    /** Ensures list encoding works: a json encoded list of spans */
    @Test
    public void messageWithMultipleSpans_json() throws Exception {
        byte[] message = SpanBytesEncoder.JSON_V1.encodeList(spans);
        rabbit.publish(message);

        Thread.sleep(1000);
        assertThat(rabbit.storage.acceptedSpanCount()).isEqualTo(spans.size());

        assertThat(rabbit.rabbitmqMetrics.messages()).isEqualTo(1);
        assertThat(rabbit.rabbitmqMetrics.bytes()).isEqualTo(message.length);
        assertThat(rabbit.rabbitmqMetrics.spans()).isEqualTo(spans.size());
    }

    /** Ensures list encoding works: a version 2 json list of spans */
    @Test
    public void messageWithMultipleSpans_json2() throws Exception {
        messageWithMultipleSpans(SpanBytesEncoder.JSON_V2);
    }

    /** Ensures list encoding works: proto3 ListOfSpans */
    @Test
    public void messageWithMultipleSpans_proto3() throws Exception {
        messageWithMultipleSpans(SpanBytesEncoder.PROTO3);
    }

    void messageWithMultipleSpans(SpanBytesEncoder encoder)
            throws IOException, TimeoutException, InterruptedException {

        byte[] message = encoder.encodeList(spans);
        rabbit.publish(message);

        Thread.sleep(1000);
        assertThat(rabbit.storage.acceptedSpanCount()).isEqualTo(spans.size());

        assertThat(rabbit.rabbitmqMetrics.messages()).isEqualTo(1);
        assertThat(rabbit.rabbitmqMetrics.bytes()).isEqualTo(message.length);
        assertThat(rabbit.rabbitmqMetrics.spans()).isEqualTo(spans.size());
    }

    /** Ensures malformed spans don't hang the collector */
    @Test
    public void skipsMalformedData() throws Exception {
        rabbit.publish(SpanBytesEncoder.JSON_V2.encodeList(spans));
        rabbit.publish(new byte[0]);
        rabbit.publish("[\"='".getBytes()); // screwed up json
        rabbit.publish("malformed".getBytes());
        rabbit.publish(SpanBytesEncoder.JSON_V2.encodeList(spans));

        Thread.sleep(1000);
        assertThat(rabbit.rabbitmqMetrics.messages()).isEqualTo(5);
        assertThat(rabbit.rabbitmqMetrics.messagesDropped()).isEqualTo(3);
    }

    /** See GitHub issue #2068 */
    @Test
    public void startsWhenConfiguredQueueAlreadyExists() throws IOException, TimeoutException {
        Channel channel = rabbit.collector.connection.get().createChannel();
        // make a queue with non-default properties
        channel.queueDeclare("zipkin-test2", true, false, false,
                Collections.singletonMap("x-message-ttl", 36000000));
        try {
            RabbitMQCollector.builder().storage(InMemoryStorage.newBuilder().build())
                    .metrics(CollectorMetrics.NOOP_METRICS).queue("zipkin-test2")
                    .addresses(Collections.singletonList(rabbit.address())).build().start().close();
        } finally {
            channel.queueDelete("zipkin-test2");
            channel.close();
        }
    }

    /** Guards against errors that leak from storage, such as InvalidQueryException */
    @Test
    public void skipsOnSpanConsumerException() {
        // TODO: reimplement
    }

    @Test
    public void messagesDistributedAcrossMultipleThreadsSuccessfully() {
        // TODO: reimplement
    }
}