com.linkedin.pinot.common.metrics.MetricsHelperTest.java Source code

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Here is the source code for com.linkedin.pinot.common.metrics.MetricsHelperTest.java

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/**
 * Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * 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.linkedin.pinot.common.metrics;

import com.yammer.metrics.core.MetricName;
import com.yammer.metrics.core.MetricsRegistry;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.MapConfiguration;
import org.testng.annotations.Test;

import static org.testng.Assert.assertTrue;

/**
 * Tests for the MetricsHelper class.
 *
 */
public class MetricsHelperTest {
    public static boolean listenerOneOkay;
    public static boolean listenerTwoOkay;

    public static class ListenerOne implements MetricsRegistryRegistrationListener {
        @Override
        public void onMetricsRegistryRegistered(MetricsRegistry metricsRegistry) {
            listenerOneOkay = true;
        }
    }

    public static class ListenerTwo implements MetricsRegistryRegistrationListener {
        @Override
        public void onMetricsRegistryRegistered(MetricsRegistry metricsRegistry) {
            listenerTwoOkay = true;
        }
    }

    @Test
    public void testMetricsHelperRegistration() {
        listenerOneOkay = false;
        listenerTwoOkay = false;

        Map<String, String> configKeys = new HashMap<String, String>();
        configKeys.put("pinot.broker.metrics.metricsRegistryRegistrationListeners",
                ListenerOne.class.getName() + "," + ListenerTwo.class.getName());
        Configuration configuration = new MapConfiguration(configKeys);

        MetricsRegistry registry = new MetricsRegistry();

        // Initialize the MetricsHelper and create a new timer
        MetricsHelper.initializeMetrics(configuration.subset("pinot.broker.metrics"));
        MetricsHelper.registerMetricsRegistry(registry);
        MetricsHelper.newTimer(registry, new MetricName(MetricsHelperTest.class, "dummy"), TimeUnit.MILLISECONDS,
                TimeUnit.MILLISECONDS);

        // Check that the two listeners fired
        assertTrue(listenerOneOkay);
        assertTrue(listenerTwoOkay);
    }
}