bbejeck commented on code in PR #17021: URL: https://github.com/apache/kafka/pull/17021#discussion_r1806988296
########## streams/src/test/java/org/apache/kafka/streams/integration/KafkaStreamsTelemetryIntegrationTest.java: ########## @@ -0,0 +1,497 @@ +/* + * 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.integration; + +import org.apache.kafka.clients.admin.Admin; +import org.apache.kafka.clients.admin.AdminClientConfig; +import org.apache.kafka.clients.consumer.Consumer; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.consumer.KafkaConsumer; +import org.apache.kafka.clients.producer.KafkaProducer; +import org.apache.kafka.clients.producer.Producer; +import org.apache.kafka.common.Metric; +import org.apache.kafka.common.MetricName; +import org.apache.kafka.common.Uuid; +import org.apache.kafka.common.metrics.KafkaMetric; +import org.apache.kafka.common.metrics.Measurable; +import org.apache.kafka.common.metrics.MetricConfig; +import org.apache.kafka.common.metrics.MetricsReporter; +import org.apache.kafka.common.serialization.ByteArrayDeserializer; +import org.apache.kafka.common.serialization.ByteArraySerializer; +import org.apache.kafka.common.serialization.Deserializer; +import org.apache.kafka.common.serialization.Serdes; +import org.apache.kafka.common.utils.Time; +import org.apache.kafka.server.authorizer.AuthorizableRequestContext; +import org.apache.kafka.server.telemetry.ClientTelemetry; +import org.apache.kafka.server.telemetry.ClientTelemetryPayload; +import org.apache.kafka.server.telemetry.ClientTelemetryReceiver; +import org.apache.kafka.streams.ClientInstanceIds; +import org.apache.kafka.streams.KafkaClientSupplier; +import org.apache.kafka.streams.KafkaStreams; +import org.apache.kafka.streams.StreamsBuilder; +import org.apache.kafka.streams.StreamsConfig; +import org.apache.kafka.streams.Topology; +import org.apache.kafka.streams.integration.utils.EmbeddedKafkaCluster; +import org.apache.kafka.streams.integration.utils.IntegrationTestUtils; +import org.apache.kafka.streams.kstream.Consumed; +import org.apache.kafka.streams.kstream.Produced; +import org.apache.kafka.test.TestUtils; + +import org.junit.jupiter.api.AfterAll; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeAll; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.DisplayName; +import org.junit.jupiter.api.Tag; +import org.junit.jupiter.api.Test; +import org.junit.jupiter.api.TestInfo; +import org.junit.jupiter.api.Timeout; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.Arguments; +import org.junit.jupiter.params.provider.MethodSource; + +import java.io.IOException; +import java.time.Duration; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashMap; +import java.util.List; +import java.util.Locale; +import java.util.Map; +import java.util.Properties; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import static org.apache.kafka.common.utils.Utils.mkEntry; +import static org.apache.kafka.common.utils.Utils.mkMap; +import static org.apache.kafka.common.utils.Utils.mkObjectProperties; +import static org.apache.kafka.streams.integration.utils.IntegrationTestUtils.safeUniqueTestName; +import static org.apache.kafka.test.TestUtils.waitForCondition; +import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertTrue; + +@Timeout(600) +@Tag("integration") +public class KafkaStreamsTelemetryIntegrationTest { + private static EmbeddedKafkaCluster cluster; + private String appId; + private String inputTopicTwoPartitions; + private String outputTopicTwoPartitions; + private String inputTopicOnePartition; + private String outputTopicOnePartition; + private final List<Properties> streamsConfigurations = new ArrayList<>(); + private static final List<MetricsInterceptingConsumer<byte[], byte[]>> INTERCEPTING_CONSUMERS = new ArrayList<>(); + private static final List<TestingMetricsInterceptingAdminClient> INTERCEPTING_ADMIN_CLIENTS = new ArrayList<>(); + private static final int NUM_BROKERS = 3; + private static final int FIRST_INSTANCE_CONSUMER = 0; + private static final int SECOND_INSTANCE_CONSUMER = 1; + + @BeforeAll + public static void startCluster() throws IOException { + final Properties properties = new Properties(); + properties.put("metric.reporters", TestingClientTelemetry.class.getName()); + cluster = new EmbeddedKafkaCluster(NUM_BROKERS, properties); + cluster.start(); + } + + @BeforeEach + public void setUp(final TestInfo testInfo) throws InterruptedException { + appId = safeUniqueTestName(testInfo); + inputTopicTwoPartitions = appId + "-input-two"; + outputTopicTwoPartitions = appId + "-output-two"; + inputTopicOnePartition = appId + "-input-one"; + outputTopicOnePartition = appId + "-output-one"; + cluster.createTopic(inputTopicTwoPartitions, 2, 1); + cluster.createTopic(outputTopicTwoPartitions, 2, 1); + cluster.createTopic(inputTopicOnePartition, 1, 1); + cluster.createTopic(outputTopicOnePartition, 1, 1); + } + + @AfterAll + public static void closeCluster() { + cluster.stop(); + } + + @AfterEach + public void tearDown() throws Exception { + INTERCEPTING_CONSUMERS.clear(); + INTERCEPTING_ADMIN_CLIENTS.clear(); + IntegrationTestUtils.purgeLocalStreamsState(streamsConfigurations); + streamsConfigurations.clear(); + } + + @Test + @DisplayName("Calling unregisterMetric on metrics not registered should not cause an error") + public void shouldNotThrowExceptionWhenRemovingNonExistingMetrics() throws InterruptedException { + final Properties properties = props(true); + final Topology topology = complexTopology(); + try (final KafkaStreams streams = new KafkaStreams(topology, properties)) { + streams.start(); + waitForCondition(() -> KafkaStreams.State.RUNNING == streams.state(), + IntegrationTestUtils.DEFAULT_TIMEOUT, + () -> "Kafka Streams never transitioned to a RUNNING state."); + + final Consumer<?, ?> embeddedConsumer = INTERCEPTING_CONSUMERS.get(FIRST_INSTANCE_CONSUMER); + final MetricName metricName = new MetricName("fakeMetric", "fakeGroup", "It's a fake metric", new HashMap<>()); + final KafkaMetric nonExitingMetric = new KafkaMetric(new Object(), metricName, (Measurable) (m, now) -> 1.0, new MetricConfig(), Time.SYSTEM); + assertDoesNotThrow(() -> embeddedConsumer.unregisterMetricFromSubscription(nonExitingMetric)); + } + } + + @Test + @DisplayName("End-to-end test validating metrics pushed to broker") + public void shouldPushMetricsToBroker() throws Exception { + final Properties properties = props(true); + final Topology topology = complexTopology(); + try (final KafkaStreams streams = new KafkaStreams(topology, properties)) { + IntegrationTestUtils.startApplicationAndWaitUntilRunning(streams); + + final ClientInstanceIds clientInstanceIds = streams.clientInstanceIds(Duration.ofSeconds(60)); + final Uuid adminInstanceId = clientInstanceIds.adminInstanceId(); + final Uuid mainConsumerInstanceId = clientInstanceIds.consumerInstanceIds().entrySet().stream() + .filter(entry -> entry.getKey().endsWith("1-consumer")) + .map(Map.Entry::getValue) + .findFirst().get(); + assertNotNull(adminInstanceId); + assertNotNull(mainConsumerInstanceId); Review Comment: Passable implementation complete -- This is an automated message from the Apache Git Service. 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