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   1 /**
   2  * Copyright (c) 2010-2020 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.mqtt;
  14
  15 import static org.junit.Assert.assertTrue;
  16
  17 import java.util.concurrent.Semaphore;
  18 import java.util.concurrent.TimeUnit;
  19
  20 import org.eclipse.jdt.annotation.NonNull;
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.core.io.transport.mqtt.MqttBrokerConnection;
  24 import org.openhab.core.io.transport.mqtt.MqttConnectionObserver;
  25 import org.openhab.core.io.transport.mqtt.MqttConnectionState;
  26 import org.openhab.core.io.transport.mqtt.MqttService;
  27 import org.openhab.core.io.transport.mqtt.MqttServiceObserver;
  28 import org.openhab.io.mqttembeddedbroker.Constants;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 /**
  33  * A full implementation test, that starts the embedded MQTT broker and publishes a homeassistant MQTT discovery device
  34  * tree.
  35  *
  36  * @author David Graeff - Initial contribution
  37  */
  38 @NonNullByDefault
  39 public class EmbeddedBrokerTools {
  40     private final Logger logger = LoggerFactory.getLogger(EmbeddedBrokerTools.class);
  41     public @Nullable MqttBrokerConnection embeddedConnection = null;
  42
  43     /**
  44      * Request the embedded broker connection from the {@link MqttService} and wait for a connection to be established.
  45      *
  46      * @throws InterruptedException
  47      */
  48     public MqttBrokerConnection waitForConnection(MqttService mqttService) throws InterruptedException {
  49         embeddedConnection = mqttService.getBrokerConnection(Constants.CLIENTID);
  50         if (embeddedConnection == null) {
  51             Semaphore semaphore = new Semaphore(1);
  52             semaphore.acquire();
  53             MqttServiceObserver observer = new MqttServiceObserver() {
  54
  55                 @Override
  56                 public void brokerAdded(@NonNull String brokerID, @NonNull MqttBrokerConnection broker) {
  57                     if (brokerID.equals(Constants.CLIENTID)) {
  58                         embeddedConnection = broker;
  59                         semaphore.release();
  60                     }
  61                 }
  62
  63                 @Override
  64                 public void brokerRemoved(@NonNull String brokerID, @NonNull MqttBrokerConnection broker) {
  65                 }
  66             };
  67             mqttService.addBrokersListener(observer);
  68             assertTrue("Wait for embedded connection client failed", semaphore.tryAcquire(700, TimeUnit.MILLISECONDS));
  69         }
  70         MqttBrokerConnection embeddedConnection = this.embeddedConnection;
  71         if (embeddedConnection == null) {
  72             throw new IllegalStateException();
  73         }
  74
  75         logger.warn("waitForConnection {}", embeddedConnection.connectionState());
  76         Semaphore semaphore = new Semaphore(1);
  77         semaphore.acquire();
  78         MqttConnectionObserver mqttConnectionObserver = (state, error) -> {
  79             if (state == MqttConnectionState.CONNECTED) {
  80                 semaphore.release();
  81             }
  82         };
  83         embeddedConnection.addConnectionObserver(mqttConnectionObserver);
  84         if (embeddedConnection.connectionState() == MqttConnectionState.CONNECTED) {
  85             semaphore.release();
  86         }
  87         assertTrue("Connection " + embeddedConnection.getClientId() + " failed. State: "
  88                 + embeddedConnection.connectionState(), semaphore.tryAcquire(500, TimeUnit.MILLISECONDS));
  89         return embeddedConnection;
  90     }
  91 }