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MockHiveMqtt5ClientFactory.java
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MockHiveMqtt5ClientFactory.java
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/*
* Copyright (c) 2019 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.connectivity.service.messaging.mqtt.hivemq;
import static org.mockito.Answers.RETURNS_SELF;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ForkJoinPool;
import java.util.function.Consumer;
import javax.annotation.Nullable;
import org.eclipse.ditto.connectivity.model.Connection;
import org.eclipse.ditto.connectivity.service.config.MqttConfig;
import org.eclipse.ditto.connectivity.service.messaging.monitoring.logs.ConnectionLogger;
import org.eclipse.ditto.connectivity.service.messaging.mqtt.MqttSpecificConfig;
import org.mockito.Mockito;
import com.hivemq.client.mqtt.datatypes.MqttTopic;
import com.hivemq.client.mqtt.datatypes.MqttTopicFilter;
import com.hivemq.client.mqtt.lifecycle.MqttClientConnectedListener;
import com.hivemq.client.mqtt.lifecycle.MqttClientDisconnectedListener;
import com.hivemq.client.mqtt.mqtt5.Mqtt5AsyncClient;
import com.hivemq.client.mqtt.mqtt5.Mqtt5Client;
import com.hivemq.client.mqtt.mqtt5.Mqtt5ClientBuilder;
import com.hivemq.client.mqtt.mqtt5.Mqtt5ClientConfig;
import com.hivemq.client.mqtt.mqtt5.advanced.Mqtt5ClientAdvancedConfigBuilder;
import com.hivemq.client.mqtt.mqtt5.advanced.interceptor.Mqtt5ClientInterceptorsBuilder;
import com.hivemq.client.mqtt.mqtt5.lifecycle.Mqtt5ClientConnectedContext;
import com.hivemq.client.mqtt.mqtt5.message.connect.Mqtt5ConnectBuilder;
import com.hivemq.client.mqtt.mqtt5.message.connect.connack.Mqtt5ConnAck;
import com.hivemq.client.mqtt.mqtt5.message.publish.Mqtt5Publish;
import com.hivemq.client.mqtt.mqtt5.message.subscribe.Mqtt5Subscribe;
import com.hivemq.client.mqtt.mqtt5.message.subscribe.suback.Mqtt5SubAck;
import akka.actor.ActorRef;
/**
* Mocks an MQTT connection with HiveMq client.
*/
class MockHiveMqtt5ClientFactory implements HiveMqtt5ClientFactory {
private Exception connectException = null;
private final Map<String, List<Mqtt5Publish>> messages = new HashMap<>();
private ActorRef testProbe;
private CompletableFuture<Mqtt5SubAck> subscribeFuture =
CompletableFuture.completedFuture(mock(Mqtt5SubAck.class));
private final List<Mqtt5AsyncClient> clients = new LinkedList<>();
MockHiveMqtt5ClientFactory withException(final Exception connectException) {
this.connectException = connectException;
return this;
}
private MockHiveMqtt5ClientFactory withMessage(final Mqtt5Publish message) {
messages.compute(message.getTopic().toString(), (key, value) -> {
final List<Mqtt5Publish> msgs = (value == null) ? new LinkedList<>() : value;
msgs.add(message);
return msgs;
});
return this;
}
MockHiveMqtt5ClientFactory withMessages(final List<Mqtt5Publish> messages) {
messages.forEach(this::withMessage);
return this;
}
MockHiveMqtt5ClientFactory withTestProbe(final ActorRef testProbe) {
this.testProbe = testProbe;
return this;
}
MockHiveMqtt5ClientFactory withFailingSubscribe() {
final CompletableFuture<Mqtt5SubAck> subscribeFuture = new CompletableFuture<>();
subscribeFuture.completeExceptionally(new IllegalStateException("you shall not pass"));
this.subscribeFuture = subscribeFuture;
return this;
}
void expectDisconnectCalled() {
// disconnect may be called multiple times, just be sure connection is closed
clients.forEach(c -> verify(c, timeout(500).atLeastOnce()).disconnect());
}
@Override
public Mqtt5AsyncClient newClient(final Connection connection,
final String identifier,
final MqttConfig mqttConfig,
final MqttSpecificConfig mqttSpecificConfig,
final boolean applyLastWillConfig,
@Nullable final MqttClientConnectedListener connectedListener,
@Nullable final MqttClientDisconnectedListener disconnectedListener,
final ConnectionLogger connectionLogger,
final boolean doubleDecodingEnabled) {
final Mqtt5AsyncClient client = mock(Mqtt5AsyncClient.class);
doReturn(client).when(client).toAsync();
final Mqtt5ConnectBuilder.Send send = mock(Mqtt5ConnectBuilder.Send.class, RETURNS_SELF);
final CompletableFuture<Mqtt5ConnAck> connectFuture = new CompletableFuture<>();
if (connectException != null) {
connectFuture.completeExceptionally(connectException);
} else {
connectFuture.complete(mock(Mqtt5ConnAck.class));
}
final CompletableFuture<Void> disconnectFuture = CompletableFuture.completedFuture(null);
// mock connect
when(client.connectWith()).thenReturn(send);
when(send.send()).then(invocation -> {
if (connectedListener != null) {
final Mqtt5ClientConnectedContext mock = mock(Mqtt5ClientConnectedContext.class);
when(mock.getClientConfig()).thenReturn(mock(Mqtt5ClientConfig.class));
connectedListener.onConnected(mock);
}
// remember which clients are connected to verify disconnect later
clients.add(client);
return connectFuture;
});
// mock disconnect
when(client.disconnect()).thenReturn(disconnectFuture);
// mock subscribe
when(client.subscribe(any(Mqtt5Subscribe.class), any(Consumer.class), anyBoolean())).thenAnswer(i -> {
if (!subscribeFuture.isCompletedExceptionally()) {
// try to send messages for this topic
final Mqtt5Subscribe sub = i.getArgument(0);
final Consumer<Mqtt5Publish> consumer = i.getArgument(1);
sub.getSubscriptions().forEach(s -> {
final MqttTopicFilter topicFilter = s.getTopicFilter();
messages.entrySet().stream()
.filter(e -> topicFilter.matches(MqttTopic.of(e.getKey())))
.flatMap(e -> e.getValue().stream())
.forEach(m -> ForkJoinPool.commonPool().execute(() -> consumer.accept(m)));
});
}
return subscribeFuture;
});
// mock publish
when(client.publish(any(Mqtt5Publish.class))).thenAnswer(i -> {
final Mqtt5Publish mqtt5Publish = i.getArgument(0);
if (testProbe != null) {
testProbe.tell(mqtt5Publish, ActorRef.noSender());
}
return CompletableFuture.completedFuture(mqtt5Publish);
});
return client;
}
@Override
public Mqtt5ClientBuilder newClientBuilder(final Connection connection,
final String identifier,
final MqttConfig mqttConfig,
final MqttSpecificConfig mqttSpecificConfig,
final boolean applyLastWillConfig,
@Nullable final MqttClientConnectedListener connectedListener,
@Nullable final MqttClientDisconnectedListener disconnectedListener,
final ConnectionLogger connectionLogger,
final boolean doubleDecodingEnabled) {
final Mqtt5Client client =
newClient(connection, identifier, mqttConfig, mqttSpecificConfig, applyLastWillConfig,
connectedListener, disconnectedListener, connectionLogger, doubleDecodingEnabled);
final Mqtt5ClientBuilder builder = Mockito.mock(Mqtt5ClientBuilder.class);
final Mqtt5ClientAdvancedConfigBuilder.Nested<Mqtt5ClientBuilder> advancedConfig =
Mockito.mock(Mqtt5ClientAdvancedConfigBuilder.Nested.class);
final Mqtt5ClientInterceptorsBuilder.Nested<Mqtt5ClientAdvancedConfigBuilder.Nested<Mqtt5ClientBuilder>>
interceptors = Mockito.mock(Mqtt5ClientInterceptorsBuilder.Nested.class);
doReturn(client).when(builder).build();
doReturn(advancedConfig).when(builder).advancedConfig();
doReturn(interceptors).when(advancedConfig).interceptors();
doReturn(interceptors).when(interceptors).incomingQos1Interceptor(any());
doReturn(interceptors).when(interceptors).incomingQos2Interceptor(any());
doReturn(advancedConfig).when(interceptors).applyInterceptors();
doReturn(builder).when(advancedConfig).applyAdvancedConfig();
return builder;
}
}