test/unit/org/apache/cassandra/net/MessagingServiceTest.java

/*
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 * 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
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 * Unless required by applicable law or agreed to in writing,
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package org.apache.cassandra.net;

import java.util.List;

import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.assertEquals;

public class MessagingServiceTest
{
    private final MessagingService messagingService = MessagingService.test();

    private static int metricScopeId = 0;

    @Before
    public void before() {
        messagingService.resetDroppedMessagesMap(Integer.toString(metricScopeId++));;
    }

    @Test
    public void testDroppedMessages()
    {
        MessagingService.Verb verb = MessagingService.Verb.READ;

        for (int i = 0; i < 5000; i++)
            messagingService.incrementDroppedMessages(verb, i % 2 == 0);

        List<String> logs = messagingService.getDroppedMessagesLogs();
        assertEquals(1, logs.size());
        assertEquals("READ messages were dropped in last 5000 ms: 2500 for internal timeout and 2500 for cross node timeout", logs.get(0));
        assertEquals(5000, (int)messagingService.getDroppedMessages().get(verb.toString()));

        logs = messagingService.getDroppedMessagesLogs();
        assertEquals(0, logs.size());

        for (int i = 0; i < 2500; i++)
            messagingService.incrementDroppedMessages(verb, i % 2 == 0);

        logs = messagingService.getDroppedMessagesLogs();
        assertEquals("READ messages were dropped in last 5000 ms: 1250 for internal timeout and 1250 for cross node timeout", logs.get(0));
        assertEquals(7500, (int)messagingService.getDroppedMessages().get(verb.toString()));
    }

}