/**
* 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.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.MessageProperties;
import lombok.RequiredArgsConstructor;
import org.thingsboard.server.common.data.id.RuleId;
import org.thingsboard.server.common.data.id.TenantId;
import org.thingsboard.server.common.msg.core.BasicStatusCodeResponse;
import org.thingsboard.server.extensions.api.plugins.PluginContext;
import org.thingsboard.server.extensions.api.plugins.handlers.RuleMsgHandler;
import org.thingsboard.server.extensions.api.plugins.msg.ResponsePluginToRuleMsg;
import org.thingsboard.server.extensions.api.plugins.msg.RuleToPluginMsg;
import org.thingsboard.server.extensions.api.rules.RuleException;
import org.thingsboard.server.extensions.rabbitmq.action.RabbitMqActionMsg;
import org.thingsboard.server.extensions.rabbitmq.action.RabbitMqActionPayload;
import java.io.IOException;
import java.nio.charset.Charset;
/**
* @author Andrew Shvayka
*/
@RequiredArgsConstructor
public class RabbitMqMsgHandler implements RuleMsgHandler {
private static final Charset UTF8 = Charset.forName("UTF-8");
private final Channel channel;
@Override
public void process(PluginContext ctx, TenantId tenantId, RuleId ruleId, RuleToPluginMsg<?> msg) throws RuleException {
if (!(msg instanceof RabbitMqActionMsg)) {
throw new RuleException("Unsupported message type " + msg.getClass().getName() + "!");
}
RabbitMqActionPayload payload = ((RabbitMqActionMsg) msg).getPayload();
AMQP.BasicProperties properties = convert(payload.getMessageProperties());
try {
channel.basicPublish(
payload.getExchange() != null ? payload.getExchange() : "",
payload.getQueueName(),
properties,
payload.getPayload().getBytes(UTF8));
if (payload.isSync()) {
ctx.reply(new ResponsePluginToRuleMsg(msg.getUid(), tenantId, ruleId,
BasicStatusCodeResponse.onSuccess(payload.getMsgType(), payload.getRequestId())));
}
} catch (IOException e) {
throw new RuleException(e.getMessage(), e);
}
}
private static AMQP.BasicProperties convert(String name) throws RuleException {
switch (name) {
case "BASIC":
return MessageProperties.BASIC;
case "TEXT_PLAIN":
return MessageProperties.TEXT_PLAIN;
case "MINIMAL_BASIC":
return MessageProperties.MINIMAL_BASIC;
case "MINIMAL_PERSISTENT_BASIC":
return MessageProperties.MINIMAL_PERSISTENT_BASIC;
case "PERSISTENT_BASIC":
return MessageProperties.PERSISTENT_BASIC;
case "PERSISTENT_TEXT_PLAIN":
return MessageProperties.PERSISTENT_TEXT_PLAIN;
default:
throw new RuleException("Message Properties: '" + name + "' is undefined!");
}
}
}