Utilities.WebUtilities.java Source code

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Here is the source code for Utilities.WebUtilities.java

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/*
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package Utilities;

import Controller.Configuration;
import Statistics.NetRateStats;
import Statistics.VMStats;
import com.google.gson.JsonArray;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONArray;

/**
 *
 * @author kostas
 */
public class WebUtilities {

    Configuration _config;

    public WebUtilities(Configuration config) {

        this._config = config;

    }

    public String createVM(Hashtable parameters) throws IOException {

        //http://nitlab3.inf.uth.gr:4100/vm-create/server-john/precise/small/192.168.100.10/255.255.254.0/192.168.100.1/node

        String uri = "http://" + _config.getNitosServer() + ".inf.uth.gr:4100/vm-create/";
        String methodResponse = "";

        String vmName = String.valueOf(parameters.get("vmName"));
        String OS = String.valueOf(parameters.get("OS"));
        String vmType = String.valueOf(parameters.get("vmType"));
        String interIP = String.valueOf(parameters.get("interIP"));
        String interMask = String.valueOf(parameters.get("interMask"));
        String interDefaultGateway = String.valueOf(parameters.get("interDefaultGateway"));
        String hostName = String.valueOf(parameters.get("hostName"));

        uri += vmName + "/";
        uri += OS + "/";
        uri += vmType + "/";
        uri += interIP + "/";
        uri += interMask + "/";
        uri += interDefaultGateway + "/";
        uri += hostName;

        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(uri);
        CloseableHttpResponse response = httpclient.execute(httpget);

        try {

            System.out.println(response.getProtocolVersion());
            System.out.println(response.getStatusLine().getStatusCode());
            System.out.println(response.getStatusLine().getReasonPhrase());
            System.out.println(response.getStatusLine().toString());

        } finally {
            response.close();
        }

        return methodResponse;
    }

    public String startVM(String vmName, String hostName) throws IOException {

        //http://nitlab3.inf.uth.gr:4100/vm-start/server-john

        String uri = "http://" + _config.getNitosServer() + ".inf.uth.gr:4100/vm-start/";
        String methodResponse = "";

        uri += vmName;
        uri += "/" + hostName;

        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(uri);
        CloseableHttpResponse response = httpclient.execute(httpget);

        try {

            System.out.println(response.getProtocolVersion());
            System.out.println(response.getStatusLine().getStatusCode());
            System.out.println(response.getStatusLine().getReasonPhrase());
            System.out.println(response.getStatusLine().toString());

        } finally {
            response.close();
        }

        return methodResponse;
    }

    public String deleteVM(String name) throws IOException {

        String uri = "http://" + _config.getNitosServer() + ".inf.uth.gr:4100/vm-destroy/";
        String methodResponse = "";

        uri += name;

        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(uri);

        CloseableHttpResponse response = httpclient.execute(httpget);

        try {

            System.out.println(response.getProtocolVersion());
            System.out.println(response.getStatusLine().getStatusCode());
            System.out.println(response.getStatusLine().getReasonPhrase());
            System.out.println(response.getStatusLine().toString());

        } finally {
            response.close();
        }

        return methodResponse;
    }

    public List<VMStats> updateVMStats(String hostName, int instance, int slot) throws IOException {

        List<VMStats> statsList = new ArrayList<>();

        String uri = "http://" + _config.getNitosServer() + ".inf.uth.gr:4000/vm/";
        uri += hostName;

        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(uri);
        CloseableHttpResponse response = httpclient.execute(httpget);

        try {

            JSONObject body = new JSONObject(response);

            JSONArray vmStatsArray = body.getJSONArray("VMs");
            int vap_number = vmStatsArray.length();

            JSONObject vm;

            for (int i = 0; i < vap_number; ++i) {
                vm = vmStatsArray.getJSONObject(i);

                statsList.add(new VMStats());

                statsList.get(i).setSlot(slot);
                statsList.get(i).setSlot(instance);
                statsList.get(i).setDomain_ID(vm.getString("Domain_ID"));
                statsList.get(i).setDomain_name(vm.getString("Domain_name"));
                statsList.get(i).setCPU_ns(vm.getString("CPU_ns"));
                statsList.get(i).setCPU_percentage(vm.getString("CPU_percentage"));
                statsList.get(i).setMem_bytes(vm.getString("Mem_bytes"));
                statsList.get(i).setMem_percentage(vm.getString("Mem_percentage"));
                statsList.get(i).setBlock_RDRQ(vm.getString("Block_RDRQ"));
                statsList.get(i).setBlock_WRRQ(vm.getString("Block_WRRQ"));
                statsList.get(i).setNet_RXBY(vm.getString("Net_RXBY"));
                statsList.get(i).setNet_TXBY(vm.getString("Net_TXBY"));
                statsList.get(i).getNetRates().setKbps_in(vm.getDouble("Kbps in"));
                statsList.get(i).getNetRates().setKbps_out(vm.getDouble("Kbps out"));
                statsList.get(i).getNetRates().setInterface(vm.getString("interface"));
                statsList.get(i).getNetRates().setTimeStamp(vm.getString("timestamp"));

            }
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            response.close();
        }

        return statsList;
    }

    public void updateHostStats(String hostName, int instance, int slot) throws IOException {

        String uri = "http://" + _config.getNitosServer() + ".inf.uth.gr:4100/host/";
        uri += hostName;

        CloseableHttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(uri);
        CloseableHttpResponse response = httpclient.execute(httpget);

        try {

            String json = "";
            String output;
            BufferedReader br = new BufferedReader(new InputStreamReader((response.getEntity().getContent())));

            while ((output = br.readLine()) != null) {
                json += output;
            }

            JSONObject body = new JSONObject(json);

            System.out.println(response.getProtocolVersion());
            System.out.println(response.getStatusLine().getStatusCode());
            System.out.println(response.getStatusLine().getReasonPhrase());
            System.out.println(response.getStatusLine().toString());

        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            response.close();
        }

    }

    public void checkVMListOnHost(String hostName) {

        String uri = "http://" + _config.getNitosServer() + ".inf.uth.gr:4100/virsh_list_all/";
        uri += hostName;

    }

}