/**
* Copyright © 2016-2017 The Thingsboard Authors
*
* Licensed 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.thingsboard.server.extensions.rabbitmq.plugin;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.thingsboard.server.extensions.api.component.Plugin;
import org.thingsboard.server.extensions.api.plugins.AbstractPlugin;
import org.thingsboard.server.extensions.api.plugins.PluginContext;
import org.thingsboard.server.extensions.api.plugins.handlers.RuleMsgHandler;
import org.thingsboard.server.extensions.rabbitmq.action.RabbitMqPluginAction;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import java.util.function.Consumer;
import java.util.stream.Collectors;
/**
* @author Andrew Shvayka
*/
@Plugin(name = "RabbitMQ Plugin", actions = {RabbitMqPluginAction.class},
descriptor = "RabbitMqPluginDescriptor.json", configuration = RabbitMqPluginConfiguration.class)
@Slf4j
public class RabbitMqPlugin extends AbstractPlugin<RabbitMqPluginConfiguration> {
private ConnectionFactory factory;
private Connection connection;
private RabbitMqMsgHandler handler;
@Override
public void init(RabbitMqPluginConfiguration configuration) {
factory = new ConnectionFactory();
factory.setHost(configuration.getHost());
factory.setPort(configuration.getPort());
set(configuration.getVirtualHost(), factory::setVirtualHost);
set(configuration.getUserName(), factory::setUsername);
set(configuration.getPassword(), factory::setPassword);
set(configuration.getAutomaticRecoveryEnabled(), factory::setAutomaticRecoveryEnabled);
set(configuration.getConnectionTimeout(), factory::setConnectionTimeout);
set(configuration.getHandshakeTimeout(), factory::setHandshakeTimeout);
set(configuration.getClientProperties(), props -> {
factory.setClientProperties(props.stream().collect(Collectors.toMap(
RabbitMqPluginConfiguration.RabbitMqPluginProperties::getKey,
RabbitMqPluginConfiguration.RabbitMqPluginProperties::getValue)));
});
init();
}
private <T> void set(T source, Consumer<T> setter) {
if (source != null && !StringUtils.isEmpty(source.toString())) {
setter.accept(source);
}
}
private void init() {
try {
this.connection = factory.newConnection();
this.handler = new RabbitMqMsgHandler(connection.createChannel());
} catch (IOException | TimeoutException e) {
throw new RuntimeException(e);
}
}
private void destroy() {
try {
this.handler = null;
this.connection.close();
} catch (Exception e) {
log.info("Failed to close connection during destroy()", e);
}
}
@Override
protected RuleMsgHandler getRuleMsgHandler() {
return handler;
}
@Override
public void resume(PluginContext ctx) {
init();
}
@Override
public void suspend(PluginContext ctx) {
destroy();
}
@Override
public void stop(PluginContext ctx) {
destroy();
}
}