/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.streampipes.sinks.brokers.jvm.rabbitmq;

import org.apache.streampipes.commons.exceptions.SpRuntimeException;
import org.apache.streampipes.dataformat.json.JsonDataFormatDefinition;
import org.apache.streampipes.model.runtime.Event;
import org.apache.streampipes.pe.shared.PlaceholderExtractor;
import org.apache.streampipes.wrapper.context.EventSinkRuntimeContext;
import org.apache.streampipes.wrapper.runtime.EventSink;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class RabbitMqConsumer implements EventSink<RabbitMqParameters> {

  private RabbitMqPublisher publisher;
  private JsonDataFormatDefinition dataFormatDefinition;
  private String topic;

  private static final Logger LOG = LoggerFactory.getLogger(RabbitMqConsumer.class);

  public RabbitMqConsumer() {
    this.dataFormatDefinition = new JsonDataFormatDefinition();
  }

  @Override
  public void onInvocation(RabbitMqParameters parameters, EventSinkRuntimeContext runtimeContext) throws SpRuntimeException {
    this.publisher = new RabbitMqPublisher(parameters);
    this.topic = parameters.getRabbitMqTopic();

    if (!this.publisher.isConnected()) {
      throw new SpRuntimeException("Could not establish conntection to RabbitMQ broker. Host: " +
              parameters.getRabbitMqHost() + " Port: " + parameters.getRabbitMqPort());
    }
  }

  @Override
  public void onEvent(Event inputEvent) {
    try {
      publisher.fire(dataFormatDefinition.fromMap(inputEvent.getRaw()),
              PlaceholderExtractor.replacePlaceholders(inputEvent, topic));
    } catch (SpRuntimeException e) {
      LOG.error("Could not serialiaze event");
    }
  }

  @Override
  public void onDetach() throws SpRuntimeException {
    publisher.cleanup();
  }
}
