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// The contents of this file are subject to the Mozilla Public 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 https://www.mozilla.org/en-US/MPL/2.0/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
// the License for the specific language governing rights and
// limitations under the License.
//
// The Original Code is RabbitMQ.
//
// The Initial Developer of the Original Code is Pivotal Software, Inc.
// Copyright (c) 2020 VMware, Inc. or its affiliates. All rights reserved.
//
package com.rabbitmq.stream;
import static org.assertj.core.api.Assertions.assertThat;
import com.rabbitmq.stream.impl.Client;
import java.nio.charset.StandardCharsets;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.function.BiConsumer;
import java.util.function.Function;
import java.util.stream.IntStream;
import java.util.stream.Stream;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
@ExtendWith(TestUtils.StreamTestInfrastructureExtension.class)
public class StreamTest {
String stream;
TestUtils.ClientFactory cf;
static Stream<Arguments> shouldBePossibleToPublishFromAnyNodeAndConsumeFromAnyMember() {
return Stream.of(
brokers(
"leader", metadata -> metadata.getLeader(), "leader", metadata -> metadata.getLeader()),
brokers(
"leader",
metadata -> metadata.getLeader(),
"replica",
metadata -> metadata.getReplicas().iterator().next()),
brokers(
"replica",
metadata -> metadata.getReplicas().iterator().next(),
"leader",
metadata -> metadata.getLeader()),
brokers(
"replica",
metadata -> new ArrayList<>(metadata.getReplicas()).get(0),
"replica",
metadata -> new ArrayList<>(metadata.getReplicas()).get(1)));
}
static Arguments brokers(
String dp,
Function<Client.StreamMetadata, Client.Broker> publisherBroker,
String dc,
Function<Client.StreamMetadata, Client.Broker> consumerBroker) {
return Arguments.of(
new FunctionWithToString<>(dp, publisherBroker),
new FunctionWithToString<>(dc, consumerBroker));
}
@ParameterizedTest
@MethodSource
void shouldBePossibleToPublishFromAnyNodeAndConsumeFromAnyMember(
Function<Client.StreamMetadata, Client.Broker> publisherBroker,
Function<Client.StreamMetadata, Client.Broker> consumerBroker)
throws Exception {
int messageCount = 10_000;
Client client = cf.get(new Client.ClientParameters().port(TestUtils.streamPortNode1()));
Map<String, Client.StreamMetadata> metadata = client.metadata(stream);
assertThat(metadata).hasSize(1).containsKey(stream);
Client.StreamMetadata streamMetadata = metadata.get(stream);
CountDownLatch publishingLatch = new CountDownLatch(messageCount);
Client publisher =
cf.get(
new Client.ClientParameters()
.port(publisherBroker.apply(streamMetadata).getPort())
.publishConfirmListener(
(publisherId, publishingId) -> publishingLatch.countDown()));
IntStream.range(0, messageCount)
.forEach(
i ->
publisher.publish(
stream,
(byte) 1,
Collections.singletonList(
publisher
.messageBuilder()
.addData(("hello " + i).getBytes(StandardCharsets.UTF_8))
.build())));
assertThat(publishingLatch.await(10, TimeUnit.SECONDS)).isTrue();
CountDownLatch consumingLatch = new CountDownLatch(messageCount);
Set<String> bodies = ConcurrentHashMap.newKeySet(messageCount);
Client consumer =
cf.get(
new Client.ClientParameters()
.port(consumerBroker.apply(streamMetadata).getPort())
.chunkListener(
(client1, subscriptionId, offset, messageCount1, dataSize) ->
client1.credit(subscriptionId, 10))
.messageListener(
(subscriptionId, offset, message) -> {
bodies.add(new String(message.getBodyAsBinary(), StandardCharsets.UTF_8));
consumingLatch.countDown();
}));
consumer.subscribe((byte) 1, stream, OffsetSpecification.first(), 10);
assertThat(consumingLatch.await(10, TimeUnit.SECONDS)).isTrue();
assertThat(bodies).hasSize(messageCount);
IntStream.range(0, messageCount).forEach(i -> assertThat(bodies.contains("hello " + i)));
}
@Test
void metadataOnClusterShouldReturnLeaderAndReplicas() {
Client client = cf.get(new Client.ClientParameters().port(TestUtils.streamPortNode1()));
Map<String, Client.StreamMetadata> metadata = client.metadata(stream);
assertThat(metadata).hasSize(1).containsKey(stream);
Client.StreamMetadata streamMetadata = metadata.get(stream);
assertThat(streamMetadata.getResponseCode()).isEqualTo(Constants.RESPONSE_CODE_OK);
assertThat(streamMetadata.getReplicas()).hasSize(2);
BiConsumer<Client.Broker, Client.Broker> assertNodesAreDifferent =
(node, anotherNode) -> {
assertThat(node.getHost()).isEqualTo(anotherNode.getHost());
assertThat(node.getPort()).isNotEqualTo(anotherNode.getPort());
};
streamMetadata
.getReplicas()
.forEach(replica -> assertNodesAreDifferent.accept(replica, streamMetadata.getLeader()));
List<Client.Broker> replicas = new ArrayList<>(streamMetadata.getReplicas());
assertNodesAreDifferent.accept(replicas.get(0), replicas.get(1));
}
static class FunctionWithToString<T, R> implements Function<T, R> {
final String toString;
final Function<T, R> delegate;
FunctionWithToString(String toString, Function<T, R> delegate) {
this.toString = toString;
this.delegate = delegate;
}
@Override
public R apply(T t) {
return delegate.apply(t);
}
@Override
public String toString() {
return toString;
}
}
}
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