| /** |
| * 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 org.apache.hadoop.metrics2.sink.kafka; |
| |
| import com.yammer.metrics.core.Counter; |
| import com.yammer.metrics.core.Gauge; |
| import com.yammer.metrics.core.Histogram; |
| import com.yammer.metrics.core.Meter; |
| import com.yammer.metrics.core.Metric; |
| import com.yammer.metrics.core.MetricName; |
| import com.yammer.metrics.core.MetricsRegistry; |
| import com.yammer.metrics.core.Timer; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.spy; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| |
| public class ScheduledReporterTest { |
| private final Gauge gauge = mock(Gauge.class); |
| private final List<Metric> list = new ArrayList<Metric>(); |
| private final MetricsRegistry registry = new MetricsRegistry(); |
| private final ScheduledReporter reporter = spy(new ScheduledReporter(registry, "example", TimeUnit.SECONDS, |
| TimeUnit.MILLISECONDS) { |
| @Override |
| public void report(Set<Entry<MetricName, Metric>> metrics) { |
| // nothing doing! |
| } |
| }); |
| |
| @SuppressWarnings("unchecked") |
| @Before |
| public void setUp() throws Exception { |
| Gauge g = registry.newGauge(System.class, "gauge", gauge); |
| Counter counter = registry.newCounter(System.class, "counter"); |
| Histogram histogram = registry.newHistogram(System.class, "histogram"); |
| Meter meter = registry.newMeter(System.class, "meter", "empty", TimeUnit.MILLISECONDS); |
| Timer timer = registry.newTimer(System.class, "timer"); |
| list.add(g); |
| list.add(counter); |
| list.add(histogram); |
| list.add(meter); |
| list.add(timer); |
| reporter.start(200, TimeUnit.MILLISECONDS); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| reporter.stop(); |
| } |
| |
| @Test |
| public void pollsPeriodically() throws Exception { |
| Thread.sleep(500); |
| verify(reporter, times(2)).report(set(list)); |
| } |
| |
| private Set<Entry<MetricName, Metric>> set(List<Metric> metrics) { |
| final Map<MetricName, Metric> map = new HashMap<MetricName, Metric>(); |
| for (Metric metric : metrics) { |
| String name = null; |
| if (metric instanceof Gauge) { |
| name = "gauge"; |
| } else if (metric instanceof Counter) { |
| name = "counter"; |
| } else if (metric instanceof Histogram) { |
| name = "histogram"; |
| } else if (metric instanceof Meter) { |
| name = "meter"; |
| } else if (metric instanceof Timer) { |
| name = "timer"; |
| } |
| map.put(new MetricName(System.class, name), metric); |
| } |
| return map.entrySet(); |
| } |
| } |