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/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * 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 io.gravitee.gateway.services.hearbeat;

import io.gravitee.repository.management.api.EventRepository;
import io.gravitee.repository.management.model.Event;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.Date;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
public class HeartbeatThread implements Runnable {

    private static final Logger LOGGER = LoggerFactory.getLogger(HeartbeatThread.class);

    @Autowired
    private EventRepository eventRepository;

    private Event heartbeatEvent;

    HeartbeatThread(Event heartbeatEvent) {
        this.heartbeatEvent = heartbeatEvent;
    }

    @Override
    public void run() {
        LOGGER.debug("Run monitor for gateway at {}", new Date());

        try {
            // Update heartbeat timestamp
            heartbeatEvent.setUpdatedAt(new Date());
            heartbeatEvent.getProperties().put("last_heartbeat_at",
                    Long.toString(heartbeatEvent.getUpdatedAt().getTime()));
            LOGGER.debug("Sending an heartbeat event");
            eventRepository.update(heartbeatEvent);
        } catch (Exception ex) {
            LOGGER.error("An unexpected error occurs while monitoring the gateway", ex);
        }
    }
}