io.watchcat.node.monitoring.threshold.ThresholdPoller.java Source code

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Here is the source code for io.watchcat.node.monitoring.threshold.ThresholdPoller.java

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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Thomas Cashman
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package io.watchcat.node.monitoring.threshold;

import io.watchcat.node.ElasticSearchConstants;

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import javax.annotation.PostConstruct;

import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

/**
 * Polls the alert threshold settings from ElasticSearch
 *
 * @author Thomas Cashman
 */
@Component
public class ThresholdPoller implements Runnable {
    @Autowired
    private TransportClient transportClient;
    @Autowired
    private ScheduledExecutorService scheduledExecutorService;
    @Autowired
    @Qualifier("hostname")
    private String hostname;

    @Autowired
    private DiskThresholds diskUsageThresholds;
    @Autowired
    private LoadAverageThresholds loadAverageThresholds;
    @Autowired
    private MemoryUsageThresholds memoryUsageThresholds;

    @Autowired
    private ThresholdInitializer thresholdInitializer;

    @PostConstruct
    public void postConstruct() {
        thresholdInitializer.initializeThresholds();
        scheduledExecutorService.scheduleAtFixedRate(this, 5, 10, TimeUnit.SECONDS);
    }

    @Override
    public void run() {
        pollLoadAverageThresholds();
        pollMemoryUsageThresholds();
        pollDiskUsageThresholds();
    }

    private void pollLoadAverageThresholds() {
        GetResponse getResponse = transportClient
                .prepareGet(hostname, ElasticSearchConstants.THRESHOLD_TYPE, ElasticSearchConstants.LOAD_AVERAGE)
                .execute().actionGet();
        loadAverageThresholds.fromGetResponse(getResponse);
    }

    private void pollMemoryUsageThresholds() {
        GetResponse getResponse = transportClient
                .prepareGet(hostname, ElasticSearchConstants.THRESHOLD_TYPE, ElasticSearchConstants.MEMORY_USAGE)
                .execute().actionGet();
        memoryUsageThresholds.fromGetResponse(getResponse);
    }

    private void pollDiskUsageThresholds() {
        GetResponse getResponse = transportClient
                .prepareGet(hostname, ElasticSearchConstants.THRESHOLD_TYPE, ElasticSearchConstants.DISKS).execute()
                .actionGet();
        diskUsageThresholds.fromGetResponse(getResponse);
    }
}