/**
* Copyright (c) 2014-2017 by the respective copyright holders.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.eclipse.smarthome.config.discovery.inbox.events;
import org.eclipse.smarthome.config.discovery.DiscoveryResult;
import org.eclipse.smarthome.config.discovery.dto.DiscoveryResultDTO;
import org.eclipse.smarthome.config.discovery.dto.DiscoveryResultDTOMapper;
import org.eclipse.smarthome.core.events.AbstractEventFactory;
import org.eclipse.smarthome.core.events.Event;
import com.google.common.base.Preconditions;
import com.google.common.collect.Sets;
/**
* An {@link InboxEventFactory} is responsible for creating inbox event instances.
*
* @author Stefan Bußweiler - Initial contribution
*/
public class InboxEventFactory extends AbstractEventFactory {
private static final String INBOX_ADDED_EVENT_TOPIC = "smarthome/inbox/{thingUID}/added";
private static final String INBOX_REMOVED_EVENT_TOPIC = "smarthome/inbox/{thingUID}/removed";
private static final String INBOX_UPDATED_EVENT_TOPIC = "smarthome/inbox/{thingUID}/updated";
/**
* Constructs a new InboxEventFactory.
*/
public InboxEventFactory() {
super(Sets.newHashSet(InboxAddedEvent.TYPE, InboxUpdatedEvent.TYPE, InboxRemovedEvent.TYPE));
}
@Override
protected Event createEventByType(String eventType, String topic, String payload, String source) throws Exception {
Event event = null;
if (eventType.equals(InboxAddedEvent.TYPE)) {
event = createAddedEvent(topic, payload);
} else if (eventType.equals(InboxRemovedEvent.TYPE)) {
event = createRemovedEvent(topic, payload);
} else if (eventType.equals(InboxUpdatedEvent.TYPE)) {
event = createUpdatedEvent(topic, payload);
}
return event;
}
private Event createAddedEvent(String topic, String payload) {
DiscoveryResultDTO resultDTO = deserializePayload(payload, DiscoveryResultDTO.class);
return new InboxAddedEvent(topic, payload, resultDTO);
}
private Event createRemovedEvent(String topic, String payload) {
DiscoveryResultDTO resultDTO = deserializePayload(payload, DiscoveryResultDTO.class);
return new InboxRemovedEvent(topic, payload, resultDTO);
}
private Event createUpdatedEvent(String topic, String payload) {
DiscoveryResultDTO resultDTO = deserializePayload(payload, DiscoveryResultDTO.class);
return new InboxUpdatedEvent(topic, payload, resultDTO);
}
/**
* Creates an inbox added event.
*
* @param discoveryResult the discovery result
*
* @return the created inbox added event
*
* @throws IllegalArgumentException if discoveryResult is null
*/
public static InboxAddedEvent createAddedEvent(DiscoveryResult discoveryResult) {
assertValidArgument(discoveryResult);
String topic = buildTopic(INBOX_ADDED_EVENT_TOPIC, discoveryResult.getThingUID().getAsString());
DiscoveryResultDTO resultDTO = map(discoveryResult);
String payload = serializePayload(resultDTO);
return new InboxAddedEvent(topic, payload, resultDTO);
}
/**
* Creates an inbox removed event.
*
* @param discoveryResult the discovery result
*
* @return the created inbox removed event
*
* @throws IllegalArgumentException if discoveryResult is null
*/
public static InboxRemovedEvent createRemovedEvent(DiscoveryResult discoveryResult) {
assertValidArgument(discoveryResult);
String topic = buildTopic(INBOX_REMOVED_EVENT_TOPIC, discoveryResult.getThingUID().getAsString());
DiscoveryResultDTO resultDTO = map(discoveryResult);
String payload = serializePayload(resultDTO);
return new InboxRemovedEvent(topic, payload, resultDTO);
}
/**
* Creates an inbox updated event.
*
* @param discoveryResult the discovery result
*
* @return the created inbox updated event
*
* @throws IllegalArgumentException if discoveryResult is null
*/
public static InboxUpdatedEvent createUpdatedEvent(DiscoveryResult discoveryResult) {
assertValidArgument(discoveryResult);
String topic = buildTopic(INBOX_UPDATED_EVENT_TOPIC, discoveryResult.getThingUID().getAsString());
DiscoveryResultDTO resultDTO = map(discoveryResult);
String payload = serializePayload(resultDTO);
return new InboxUpdatedEvent(topic, payload, resultDTO);
}
private static void assertValidArgument(DiscoveryResult discoveryResult) {
Preconditions.checkArgument(discoveryResult != null, "The argument 'discoveryResult' must not be null.");
}
private static String buildTopic(String topic, String thingUID) {
return topic.replace("{thingUID}", thingUID);
}
private static DiscoveryResultDTO map(DiscoveryResult discoveryResult) {
return DiscoveryResultDTOMapper.map(discoveryResult);
}
}