How do i get a device token of my computer?

Question

I am trying to create a small application that will read the CPU load of computers / laptops and send a push notification to the browser of my main laptop, which will contain the user name and how much the processor is loaded. As a technology for sending notifications, I chose FCM. The code itself is already ready, but I lack one detail. I need to get the device token of my laptop, to which this push notification will be sent (because as I understand it, the device token is the token of the computer where the notification is sent). But I do not know how to get this token. Most of the guidelines are directed to Android, and I need to send it from computer to computer. Maybe someone can tell me a different approach to sending these notifications, or the option that I attached is also suitable for a start? If so, how can I get this token?

public class MetricTesting {      
 Process p = Runtime.getRuntime().exec("typeperf \"\\238(_Total)\\6\"");
    BufferedReader br = new BufferedReader(new 
    InputStreamReader(p.getInputStream()));
    String line;
    double pr = 0;
    Pattern pattern = Pattern.compile("[\\d]{0,3}\\.\\d{4,}");
    while ((line = br.readLine()) != null) {
        System.out.println(line);
        Matcher m = pattern.matcher(line);
        if (!m.find()) {
            continue;
        }
        line = m.group();
        pr = Math.round(Double.parseDouble(line) * 10.0) / 10.0;
        System.out.println(pr);
        if (pr > 5) {
            PushNotificationSender.sendPushNotification("??", Double.toString(pr));   
            System.out.println(System.getProperty("user.name") + ", Processor loaded " + pr + " %");

        }

    }
    String[] g = br.readLine().split("");
    System.out.println(Arrays.toString(g));
    br.close();
}

}




  class PushNotificationSender {

public final static String AUTH_KEY_FCM = "//";
public final static String API_URL_FCM = "https://fcm.googleapis.com/fcm/send";

public static String sendPushNotification(String deviceToken, String pr)
        throws IOException, JSONException {
    String result = "";
    URL url = new URL(API_URL_FCM);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    conn.setUseCaches(false);
    conn.setDoInput(true);
    conn.setDoOutput(true);

    conn.setRequestMethod("POST");
    conn.setRequestProperty("Authorization", "key=" + AUTH_KEY_FCM);
    conn.setRequestProperty("Content-Type", "application/json");

    JSONObject json = new JSONObject();

    json.put("to", deviceToken.trim());
    JSONObject info = new JSONObject();
    info.put("title", "CPU is overloaded"); 
    info.put("body", System.getProperty("user.name")+"\n"+pr);
    json.put("notification", info);
    try {
        OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
        wr.write(json.toString());
        wr.flush();

        BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

        String output;
        while ((output = br.readLine()) != null) {
            System.out.println(output);
        }
        result = "OK";
    } catch (Exception e) {
        e.printStackTrace();
        result = "BAD";
    }

    return result;
}
}

score 1 · Answer 1 · answered Apr 12 '19 at 02:45

You must try https://firebase.google.com/docs/cloud-messaging/js/client to create a web client for firebase push notification. In the above article, generating firebase token is also mentioned. You can try to push notification thru topic instead of firebase token as well.

How do i get a device token of my computer?

1 Answers1