StatusData.java

package dashboard;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class StatusData {
    //Variables:
    private String serverName;
    private String serverAddress;
    private String cpuUsage;
    private String cycles;
    private String io;
    private String lastUpdate;
    private String serverHealth;

    private static final String DELIMITER = ",";
    private static final int STATUS_LIMIT = 10;

    private StatusData[] statuses;

    // Default constructor
    public StatusData() {
    }

    public void create(String dest) {
        // Data for the CSV file
        String[] headers = {"ServerName", "ServerAddress", "CPUUsage", "Cycles", "IO", "LastUpdate", "ServerHealth"};
        String[][] data = {
                {"Server A", "192.168.1.101", "30%", "5000", "4GB", "30-10-2023 08:00", "Good"},
                {"Server B", "192.168.1.102", "20%", "4000", "8GB", "30-10-2023 08:01", "Fair"},
                {"Server C", "192.168.1.103", "40%", "6000", "2GB", "30-10-2023 08:02", "Excellent"},
                {"Server D", "192.168.1.104", "25%", "4500", "6GB", "30-10-2023 08:03", "Good"}
        };

        createCsvFile(dest, headers, data);

        System.out.println("statuses.csv file created successfully.");
    }

    private static void createCsvFile(String fileName, String[] headers, String[][] data) {
        try (FileWriter writer = new FileWriter(fileName)) {
            // Write headers to the CSV file
            for (String header : headers) {
                writer.append(header).append(",");
            }
            writer.append("\n");

            // Write data to the CSV file
            for (String[] row : data) {
                for (String value : row) {
                    writer.append(value).append(",");
                }
                writer.append("\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void load(String source) {
        File sourceFile = new File(source);

        try {
            Scanner sc = new Scanner(sourceFile);
            sc.useDelimiter(DELIMITER);

            // Skip the header line
            if (sc.hasNextLine()) {
                sc.nextLine();
            }

            ArrayList<StatusData> statusList = new ArrayList<>();

            while (sc.hasNextLine() && statusList.size() < STATUS_LIMIT) {
                String line = sc.nextLine();

                // Split the line into individual fields using ","
                String[] fields = line.split(DELIMITER);

                // Check if the line has the expected number of fields:
                if (fields.length == 7) {
                    String serverName = fields[0].trim();
                    String serverAddress = fields[1].trim();
                    String cpuUsage = fields[2].trim();
                    String cycles = fields[3].trim();
                    String io = fields[4].trim();
                    String lastUpdate = fields[5].trim();
                    String serverHealth = fields[6].trim();

                    statusList.add(new StatusData(serverName, serverAddress, cpuUsage, cycles, io, lastUpdate, serverHealth));
                } else {
                    System.out.println("Error: Missing tokens in the input file. Skipping the current line.");
                }
            }

            statuses = statusList.toArray(new StatusData[0]);

            System.out.println("\nNo. of statuses: " + statusList.size());

            sc.close();
        } catch (FileNotFoundException e) {
            System.out.println("Error: File not found.");
            System.out.println("Creating file...");
            create(source);
            load(source);
        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
            e.printStackTrace();
        }
    }

    //Constructors:

    public StatusData(String serverName, String serverAddress, String cpuUsage, String cycles, String io, String lastUpdate, String serverHealth) {
        this.serverName = serverName;
        this.serverAddress = serverAddress;
        this.cpuUsage = cpuUsage;
        this.cycles = cycles;
        this.io = io;
        this.lastUpdate = lastUpdate;
        this.serverHealth = serverHealth;
    }

    public StatusData[] getStatuses() {
        return statuses;
    }

    public String getServerName() {
        return serverName;
    }

    public String getServerAddress() {
        return serverAddress;
    }

    public String getCpuUsage() {
        return cpuUsage;
    }

    public String getCycles() {
        return cycles;
    }

    public String getIo() {
        return io;
    }

    public String getLastUpdate() {
        return lastUpdate;
    }

    public String getServerHealth() {
        return serverHealth;
    }
}