/*
* 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.kafka.streams.processor.internals;
import org.apache.kafka.common.Metric;
import org.apache.kafka.common.MetricName;
import org.apache.kafka.common.metrics.Metrics;
import org.apache.kafka.common.metrics.Sensor;
import org.junit.Test;
import java.util.HashMap;
import java.util.Map;
import static org.junit.Assert.assertEquals;
public class StreamsMetricsImplTest {
@Test(expected = NullPointerException.class)
public void testNullMetrics() throws Exception {
String groupName = "doesNotMatter";
Map<String, String> tags = new HashMap<>();
StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(null, groupName, tags);
}
@Test(expected = NullPointerException.class)
public void testRemoveNullSensor() {
String groupName = "doesNotMatter";
Map<String, String> tags = new HashMap<>();
StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(new Metrics(), groupName, tags);
streamsMetrics.removeSensor(null);
}
@Test
public void testRemoveSensor() {
String groupName = "doesNotMatter";
String sensorName = "sensor1";
String scope = "scope";
String entity = "entity";
String operation = "put";
Map<String, String> tags = new HashMap<>();
StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(new Metrics(), groupName, tags);
Sensor sensor1 = streamsMetrics.addSensor(sensorName, Sensor.RecordingLevel.DEBUG);
streamsMetrics.removeSensor(sensor1);
Sensor sensor1a = streamsMetrics.addSensor(sensorName, Sensor.RecordingLevel.DEBUG, sensor1);
streamsMetrics.removeSensor(sensor1a);
Sensor sensor2 = streamsMetrics.addLatencyAndThroughputSensor(scope, entity, operation, Sensor.RecordingLevel.DEBUG);
streamsMetrics.removeSensor(sensor2);
Sensor sensor3 = streamsMetrics.addThroughputSensor(scope, entity, operation, Sensor.RecordingLevel.DEBUG);
streamsMetrics.removeSensor(sensor3);
}
@Test
public void testLatencyMetrics() {
String groupName = "doesNotMatter";
String scope = "scope";
String entity = "entity";
String operation = "put";
Map<String, String> tags = new HashMap<>();
StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(new Metrics(), groupName, tags);
Sensor sensor1 = streamsMetrics.addLatencyAndThroughputSensor(scope, entity, operation, Sensor.RecordingLevel.DEBUG);
Map<MetricName, ? extends Metric> metrics = streamsMetrics.metrics();
// 6 metrics plus a common metric that keeps track of total registered metrics in Metrics() constructor
assertEquals(metrics.size(), 7);
streamsMetrics.removeSensor(sensor1);
metrics = streamsMetrics.metrics();
assertEquals(metrics.size(), 1);
}
@Test
public void testThroughputMetrics() {
String groupName = "doesNotMatter";
String scope = "scope";
String entity = "entity";
String operation = "put";
Map<String, String> tags = new HashMap<>();
StreamsMetricsImpl streamsMetrics = new StreamsMetricsImpl(new Metrics(), groupName, tags);
Sensor sensor1 = streamsMetrics.addThroughputSensor(scope, entity, operation, Sensor.RecordingLevel.DEBUG);
Map<MetricName, ? extends Metric> metrics = streamsMetrics.metrics();
// 2 metrics plus a common metric that keeps track of total registered metrics in Metrics() constructor
assertEquals(metrics.size(), 3);
streamsMetrics.removeSensor(sensor1);
metrics = streamsMetrics.metrics();
assertEquals(metrics.size(), 1);
}
}