io.symcpe.hendrix.alerts.SuppressionMonitorBolt.java Source code

Introduction

Here is the source code for io.symcpe.hendrix.alerts.SuppressionMonitorBolt.java

Source

/**
 * Copyright 2016 Symantec Corporation.
 * 
 * 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.symcpe.hendrix.alerts;

import java.io.IOException;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.util.Map;

import org.apache.http.client.methods.HttpPut;
import org.apache.http.impl.client.CloseableHttpClient;

import backtype.storm.task.OutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.base.BaseRichBolt;
import backtype.storm.tuple.Tuple;
import io.symcpe.hendrix.storm.Constants;
import io.symcpe.hendrix.storm.StormContextUtil;
import io.symcpe.hendrix.storm.Utils;

/**
 * Ability to monitor suppression states for templates in real-time i.e. if a
 * template is being suppressed then suppression state will be true else it will
 * be false.
 * 
 * @author ambud_sharma
 */
public class SuppressionMonitorBolt extends BaseRichBolt {

    private static final long serialVersionUID = 1L;
    private static final String UI_ENDPOINT = "ui.endpoint.av";
    private transient OutputCollector collector;
    private transient String uiEndpoint;
    private transient CloseableHttpClient client;

    @SuppressWarnings("rawtypes")
    @Override
    public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
        this.collector = collector;
        if (stormConf.get(UI_ENDPOINT) != null) {
            this.uiEndpoint = stormConf.get(UI_ENDPOINT).toString();
        } else {
            this.uiEndpoint = "http://localhost:8080/ROOT/api/suppression/";
        }
    }

    @Override
    public void execute(Tuple tuple) {
        try {
            client = Utils.buildClient(this.uiEndpoint, 3000, 3000);
            HttpPut put = new HttpPut(
                    this.uiEndpoint + "/" + tuple.getShortByField(Constants.FIELD_ALERT_TEMPLATE_ID) + "/"
                            + tuple.getBooleanByField(Constants.SUPRESSION_STATE));
            client.execute(put);
            client.close();
        } catch (KeyManagementException | NoSuchAlgorithmException | KeyStoreException | IOException e) {
            collector.reportError(e);
        }
        collector.ack(tuple);
    }

    @Override
    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        StormContextUtil.declareErrorStream(declarer);
    }

}