westphal-jan commented on a change in pull request #15140: URL: https://github.com/apache/flink/pull/15140#discussion_r594939796
########## File path: flink-connectors/flink-connector-rabbitmq2/src/test/java/org/apache/flink/connector/rabbitmq2/common/RabbitMQBaseTest.java ########## @@ -0,0 +1,198 @@ +/* + * 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.flink.connector.rabbitmq2.common; + +import org.apache.flink.api.common.eventtime.WatermarkStrategy; +import org.apache.flink.api.common.restartstrategy.RestartStrategies; +import org.apache.flink.api.common.serialization.SimpleStringSchema; +import org.apache.flink.connector.rabbitmq2.ConsistencyMode; +import org.apache.flink.connector.rabbitmq2.RabbitMQConnectionConfig; +import org.apache.flink.connector.rabbitmq2.sink.RabbitMQSink; +import org.apache.flink.connector.rabbitmq2.source.RabbitMQSource; +import org.apache.flink.runtime.testutils.MiniClusterResourceConfiguration; +import org.apache.flink.streaming.api.datastream.DataStream; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.streaming.api.functions.sink.SinkFunction; +import org.apache.flink.test.util.MiniClusterWithClientResource; + +import org.junit.Before; +import org.junit.Rule; +import org.testcontainers.containers.RabbitMQContainer; +import org.testcontainers.utility.DockerImageName; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.UUID; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.TimeoutException; + +/** + * The base class for rabbitmq tests. It sets up a flink cluster and a docker image for rabbitmq. It + * provides behavior to easily add onto the stream, send message to rabbitmq and get the message in + * rabbitmq. + */ +public abstract class RabbitMQBaseTest { + + protected static final int RABBITMQ_PORT = 5672; + protected RabbitMQContainerClient client; + protected String queueName; + + @Rule + public MiniClusterWithClientResource flinkCluster = + new MiniClusterWithClientResource( + new MiniClusterResourceConfiguration.Builder() + .setNumberSlotsPerTaskManager(1) + .setNumberTaskManagers(1) + .build()); + + protected StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(); + + @Rule + public RabbitMQContainer rabbitMq = + new RabbitMQContainer( + DockerImageName.parse("rabbitmq").withTag("3.7.25-management-alpine")) + .withExposedPorts(RABBITMQ_PORT); + + @Before + public void setUpContainerClient() { + client = new RabbitMQContainerClient(rabbitMq); + env = StreamExecutionEnvironment.getExecutionEnvironment(); + env.enableCheckpointing(1000); + env.setRestartStrategy(RestartStrategies.fixedDelayRestart(10, 1000)); + } + + public void addSinkOn(DataStream<String> stream, ConsistencyMode consistencyMode) + throws IOException, TimeoutException { + queueName = UUID.randomUUID().toString(); + client.createQueue(queueName, true); + final RabbitMQConnectionConfig connectionConfig = + new RabbitMQConnectionConfig.Builder() + .setHost(rabbitMq.getHost()) + .setVirtualHost("/") + .setUserName(rabbitMq.getAdminUsername()) + .setPassword(rabbitMq.getAdminPassword()) + .setPort(rabbitMq.getMappedPort(RABBITMQ_PORT)) + .build(); + + RabbitMQSink<String> sink = + RabbitMQSink.<String>builder() + .setConnectionConfig(connectionConfig) + .setQueueName(queueName) + .setSerializationSchema(new SimpleStringSchema()) + .setConsistencyMode(consistencyMode) + .build(); + stream.sinkTo(sink).setParallelism(1); + } + + public List<String> getMessageFromRabbit() throws IOException { + return client.readMessages(new SimpleStringSchema()); + } + + public DataStream<String> getSinkOn( + StreamExecutionEnvironment env, ConsistencyMode consistencyMode) + throws IOException, TimeoutException { + queueName = UUID.randomUUID().toString(); + client.createQueue(queueName); + final RabbitMQConnectionConfig connectionConfig = + new RabbitMQConnectionConfig.Builder() + .setHost(rabbitMq.getHost()) + .setVirtualHost("/") + .setUserName(rabbitMq.getAdminUsername()) + .setPassword(rabbitMq.getAdminPassword()) + .setPort(rabbitMq.getMappedPort(RABBITMQ_PORT)) + .build(); + + RabbitMQSource<String> rabbitMQSource = + new RabbitMQSource<>( + connectionConfig, queueName, new SimpleStringSchema(), consistencyMode); + + final DataStream<String> stream = + env.fromSource(rabbitMQSource, WatermarkStrategy.noWatermarks(), "RabbitMQSource") + .setParallelism(1); + + return stream; + } + + public void sendToRabbit(List<String> messages) throws IOException, InterruptedException { + for (String message : messages) { + client.sendMessages(new SimpleStringSchema(), message); + } + + TimeUnit.SECONDS.sleep(3); + } + + public void sendToRabbit(List<String> messages, List<String> correlationIds) + throws IOException, InterruptedException { + sendToRabbit(messages, correlationIds, 100); + } + + public void sendToRabbit(List<String> messages, List<String> correlationIds, int delay) + throws IOException, InterruptedException { + for (int i = 0; i < messages.size(); i++) { + TimeUnit.MILLISECONDS.sleep(delay); + client.sendMessages(new SimpleStringSchema(), messages.get(i), correlationIds.get(i)); + } + + TimeUnit.SECONDS.sleep(3); + } + + public void sendToRabbit(int numberOfMessage) throws IOException, InterruptedException { + sendToRabbit(getRandomMessages(numberOfMessage)); + } + + public List<String> getRandomMessages(int numberOfMessages) { + List<String> messages = new ArrayList<>(); + for (int i = 0; i < numberOfMessages; i++) { + messages.add(UUID.randomUUID().toString()); + } + return messages; + } + + public List<String> getSequentialMessages(int numberOfMessages) { + List<String> messages = new ArrayList<>(); + for (int i = 0; i < numberOfMessages; i++) { + messages.add("Message " + i); + } + return messages; + } + + public List<String> getCollectedSinkMessages() { + List<String> messages = new ArrayList<>(CollectSink.VALUES); + CollectSink.VALUES.clear(); + return messages; + } + + public void addCollectorSink(DataStream<String> stream) { + stream.addSink(new CollectSink()); + } + + /** CollectSink to access the messages from the stream. */ + public static class CollectSink implements SinkFunction<String> { + + // must be static + public static final List<String> VALUES = Collections.synchronizedList(new ArrayList<>()); Review comment: The problem is that the source and sink get serialized and deserialized and therefore are new objects. This means that we lose access to the values if we put it as an instance variable as the object we instantiated in the tests is not the same as the one used in the stream. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
