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Moved around OSAL and implemented /proc/net/arp parser

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Ziver Koc 2016-09-30 16:57:43 +02:00
parent ab8239a809
commit 1e5e114300
13 changed files with 1160 additions and 941 deletions
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src/zutil/osal/app/linux/NutUPSClient.java
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package zutil.osal.app.linux;
import zutil.Timer;
import zutil.log.LogUtil;
import java.io.*;
import java.net.Socket;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Provides a java interface for the linux service "upsd" from the
* The NUT (Network UPS Tools) package.
*
* Created by Ziver on 2016-04-01.
*/
public class NutUPSClient {
private static final Logger logger = LogUtil.getLogger();
public static final String DEFAULT_HOST = "localhost";
public static final int DEFAULT_PORT = 3493;
public static final int POLL_INTERVAL = 2000;
private static final Pattern keyValuePattern = Pattern.compile("\\W*:\\W*");
private static final String PARAMETER_MANUFACTURER = "ups.mfr";
private static final String PARAMETER_MODEL = "ups.model";
private static final String PARAMETER_DESCRIPTION = "ups.description";
private static final String PARAMETER_POWER_LOAD = "ups.load"; //ups.power
private static final String PARAMETER_POWER_USAGE = "ups.realpower"; //ups.power
private static final String PARAMETER_BATTERY_CHARGE = "battery.charge";
private static final String PARAMETER_BATTERY_VOLTAGE = "battery.voltage";
private static final String PARAMETER_POLL_INTERVAL = "driver.parameter.pollinterval";
private String host;
private int port;
private ArrayList<UPSDevice> upsDevices;
private Timer pollTimer;
public NutUPSClient(String host, int port){
this.upsDevices = new ArrayList<>();
this.host = host;
this.port = port;
this.pollTimer = new Timer(POLL_INTERVAL);
}
public UPSDevice getUPS(String id){
update();
return __getUPS(id);
}
private UPSDevice __getUPS(String id){
for (UPSDevice ups : upsDevices){
if (ups.equals(id))
return ups;
}
return null;
}
public UPSDevice[] getUPSList(){
update();
return upsDevices.toArray(new UPSDevice[0]);
}
protected synchronized void update(){
if(pollTimer.hasTimedOut()){
logger.fine("Starting UPS data refresh ("+host+":"+port+")");
try(Socket s = new Socket(host, port)) {
Writer out = new OutputStreamWriter(s.getOutputStream());
BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
// Refresh device list
HashMap<String,String> tmp = new HashMap<>();
sendListCommand(out, in, "UPS", tmp);
for (String upsId : tmp.keySet()){
if(__getUPS(upsId) == null) {
logger.fine("Registering new UPS device: "+upsId);
upsDevices.add(new UPSDevice(upsId));
}
}
// Refresh device data
for (UPSDevice ups : upsDevices){
ups.update(out, in);
}
} catch (Exception e){
logger.log(Level.WARNING, null, e);
}
// reset timer
pollTimer.start();
}
}
/**
* Reference http://networkupstools.org/docs/developer-guide.chunked/ar01s09.html
*/
private void sendListCommand(Writer out, BufferedReader in, String cmd, HashMap<String,String> parameters) throws IOException {
String request = "LIST " + cmd;
out.write(request + "\n");
out.flush();
String line = in.readLine();
if ( ! line.startsWith("BEGIN LIST"))
throw new IOException("Unexpected response from upsd: Request: '"+request+"' Response: '"+line+"'");
Pattern listKeyValuePatter = Pattern.compile("\\w* (?:\\w* )?([\\w.]+) \"(.*)\"");
while ((line=in.readLine()) != null){
if (line.startsWith("END"))
break;
Matcher m = listKeyValuePatter.matcher(line);
m.matches();
parameters.put(
m.group(1),
m.group(2));
}
}
public class UPSDevice{
private String id;
private HashMap<String, String> parameters = new HashMap<>();
protected UPSDevice(String id){
this.id = id;
}
protected synchronized void update(Writer out, BufferedReader in) throws IOException {
if(pollTimer == null || pollTimer.hasTimedOut()){
parameters.clear();
logger.fine("Updating UPS parameters for: "+id);
sendListCommand(out, in, "VAR "+id, parameters);
}
}
public boolean equals(Object o){
if (o instanceof String)
return id.equals(o);
else if (o instanceof UPSDevice)
return id.equals(((UPSDevice) o).id);
return false;
}
public String getId(){
return id;
}
public String getModelName(){
return parameters.get(PARAMETER_MANUFACTURER) + " " + parameters.get(PARAMETER_MODEL);
}
public String getDescription() {
return parameters.get(PARAMETER_DESCRIPTION);
}
public int getPowerLoad(){
return Integer.parseInt(parameters.get(PARAMETER_POWER_LOAD));
}
public int getPowerUsage(){
return Integer.parseInt(parameters.get(PARAMETER_POWER_USAGE));
}
public int getBatteryCharge(){
return Integer.parseInt(parameters.get(PARAMETER_BATTERY_CHARGE));
}
public double getBatteryVoltage(){
return Double.parseDouble(parameters.get(PARAMETER_BATTERY_VOLTAGE));
}
}
}