pulsar-broker/src/test/java/com/yahoo/pulsar/broker/stats/ManagedLedgerMetricsTest.java

/**
 * Copyright 2016 Yahoo Inc.
 *
 * Licensed 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 com.yahoo.pulsar.broker.stats;

import java.util.List;
import java.util.Map.Entry;
import java.util.concurrent.TimeUnit;

import org.apache.bookkeeper.mledger.impl.ManagedLedgerFactoryImpl;
import org.apache.bookkeeper.mledger.impl.ManagedLedgerImpl;
import org.apache.bookkeeper.mledger.impl.ManagedLedgerMBeanImpl;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import com.yahoo.pulsar.broker.service.BrokerTestBase;
import com.yahoo.pulsar.broker.stats.metrics.ManagedLedgerMetrics;
import com.yahoo.pulsar.client.api.Producer;

import junit.framework.Assert;

/**
 */
public class ManagedLedgerMetricsTest extends BrokerTestBase {

    @BeforeClass
    @Override
    protected void setup() throws Exception {
        super.baseSetup();
    }

    @AfterClass
    @Override
    protected void cleanup() throws Exception {
        super.internalCleanup();
    }

    @Test
    public void testManagedLedgerMetrics() throws Exception {
        ManagedLedgerMetrics metrics = new ManagedLedgerMetrics(pulsar);

        final String addEntryRateKey = "brk_ml_AddEntryMessagesRate";
        List<Metrics> list1 = metrics.generate();
        Assert.assertTrue(list1.isEmpty());

        Producer producer = pulsarClient.createProducer("persistent://my-property/use/my-ns/my-topic1");
        for (int i = 0; i < 10; i++) {
            String message = "my-message-" + i;
            producer.send(message.getBytes());
        }

        for (Entry<String, ManagedLedgerImpl> ledger : ((ManagedLedgerFactoryImpl) pulsar.getManagedLedgerFactory())
                .getManagedLedgers().entrySet()) {
            ManagedLedgerMBeanImpl stats = (ManagedLedgerMBeanImpl) ledger.getValue().getStats();
            stats.refreshStats(1, TimeUnit.SECONDS);
        }

        List<Metrics> list2 = metrics.generate();
        Assert.assertEquals(list2.get(0).getMetrics().get(addEntryRateKey), 10.0D);

        for (int i = 0; i < 5; i++) {
            String message = "my-message-" + i;
            producer.send(message.getBytes());
        }
        for (Entry<String, ManagedLedgerImpl> ledger : ((ManagedLedgerFactoryImpl) pulsar.getManagedLedgerFactory())
                .getManagedLedgers().entrySet()) {
            ManagedLedgerMBeanImpl stats = (ManagedLedgerMBeanImpl) ledger.getValue().getStats();
            stats.refreshStats(1, TimeUnit.SECONDS);
        }
        List<Metrics> list3 = metrics.generate();
        Assert.assertEquals(list3.get(0).getMetrics().get(addEntryRateKey), 5.0D);

    }

}