com.srotya.tau.ui.alerts.AlertReceiver.java Source code

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Here is the source code for com.srotya.tau.ui.alerts.AlertReceiver.java

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/**
 * 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 com.srotya.tau.ui.alerts;

import java.io.Serializable;
import java.util.LinkedList;
import java.util.Map;
import java.util.Queue;
import java.util.logging.Logger;

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;

import com.google.gson.Gson;
import com.srotya.tau.ui.ApplicationManager;
import com.srotya.tau.ui.Utils;

/**
 * Proxy to backend for alert receiver functionality
 * 
 * @author ambud_sharma
 */
public class AlertReceiver implements Serializable {

    private static final long serialVersionUID = 1L;
    private static final Logger logger = Logger.getLogger(AlertReceiver.class.getName());
    private static AlertReceiver instance = new AlertReceiver();
    private ApplicationManager am;

    private AlertReceiver() {
    }

    public static AlertReceiver getInstance() {
        return instance;
    }

    public void addChannel(short ruleId) throws Exception {
        CloseableHttpClient client = Utils.buildClient(am.getBaseUrl(), am.getConnectTimeout(),
                am.getRequestTimeout());
        HttpPost post = new HttpPost(am.getBaseUrl() + "/receive/open/" + ruleId);
        client.execute(post);
        logger.info("Requested channel open");
    }

    /**
     * @param ruleId
     * @return
     */
    @SuppressWarnings("unchecked")
    public Queue<Map<String, Object>> getChannel(short ruleId) throws Exception {
        CloseableHttpClient client = Utils.buildClient(am.getBaseUrl(), am.getConnectTimeout(),
                am.getRequestTimeout());
        HttpGet get = new HttpGet(am.getBaseUrl() + "/receive/events/" + ruleId);
        CloseableHttpResponse response = client.execute(get);
        if (response.getStatusLine().getStatusCode() < 300) {
            String result = EntityUtils.toString(response.getEntity());
            Gson gson = new Gson();
            Queue<Map<String, Object>> queue = gson.fromJson(result, Queue.class);
            return queue;
        }
        return new LinkedList<>();
    }

    /**
     * @param ruleId
     */
    public void closeChannel(short ruleId) throws Exception {
        CloseableHttpClient client = Utils.buildClient(am.getBaseUrl(), am.getConnectTimeout(),
                am.getRequestTimeout());
        HttpPost post = new HttpPost(am.getBaseUrl() + "/receive/close/" + ruleId);
        client.execute(post);
        logger.info("Requested channel closed");
    }

    /**
     * @return the am
     */
    public ApplicationManager getAm() {
        return am;
    }

    /**
     * @param am
     *            the am to set
     */
    public void setAm(ApplicationManager am) {
        this.am = am;
    }

}