/**
* @param args args[0] : configuration file
* @throws ConnectException
*/
public static void main(String[] args) {
/*
* Arguments
*/
for (int i = 0; i < args.length; i++) {
if (args[i].equals(ARGUMENT_CFGFILE)) {
configfile = args[++i];
} else if (args[i].equals(ARGUMENT_STOP)) {
stopService = true;
} else if (args[i].equals(ARGUMENT_TEST)) {
testService = true;
} else {
System.out.println("Unknown parameter '" + args[i] + "' will be ignored.");
}
}
if (!stopService) {
log.info("[" + myPID + "] ####### NEW WATCHSERVICE #######");
}
// configuration file
if (null == configfile) {
exit(1, "No configuration file given.");
}
File cfgFile = new File(configfile);
if (!cfgFile.exists()) {
exit(1, "Configuration file not found: " + cfgFile.getAbsolutePath());
}
if (!cfgFile.isFile()) {
exit(1, "Given file is no file: " + cfgFile.getAbsolutePath());
}
// PID file
setPidfile(cfgFile);
if (pidfile.exists()) {
int runningPID = getPidFromFile(pidfile);
if (processIsAlreadyRunning(runningPID, cfgFile.getName())) {
if (stopService) {
log.info("stopping process...");
try {
Runtime.getRuntime().exec("kill -9 " + runningPID);
pidfile.delete();
} catch (IOException e1) {
exit(1, "[" + runningPID + "] Could not stop service.", e1);
}
exit(0, "[" + runningPID + "] WaagenWatchService stopped.");
}
exit(1, "[error] Process already running (pid " + runningPID + ") ...");
} else {
if (stopService) {
pidfile.delete();
exit(0, "Specified WaagenWatchService is not running.");
}
// else: Write PID to PID file
}
}
// write PID to PID file
FileWriter w = null;
try {
w = new FileWriter(pidfile);
w.write(myPID);
} catch (IOException e) {
exit(1, "IOException in pid file.", e);
} finally {
try {
w.close();
} catch (IOException e) {
}
}
// AbasRueckmeldung erzeugen
if (!stopService) {
/*
* Configuration
*/
try {
waageConfigurationReader.read(cfgFile);
configuration = waageConfigurationReader.getConfiguration();
configuration.setPIDFile(pidfile);
} catch (IOException e) {
exit(1, e);
}
/*
* Existing files
*/
log.info("Handle existing files...");
log.info("Starting WaagenWatchservice...");
AbasRueckmeldung abasrueck;
Thread threadAbas =
new Thread(abasrueck = new AbasRueckmeldung(waageConfigurationReader.getConfiguration()));
threadAbas.start();
Long wartezaehler = new Long(0);
if (abasrueck == null) {
throw new NullPointerException("Es wurde kein Object abasRückmeldung angelegt!");
}
while (!abasrueck.isConnected()) {
wartezaehler = wartezaehler + 1;
if (wartezaehler % 100 == 0) {
log.info(wartezaehler.toString() + " Warten bis EDP-Verbindung steht");
}
if (wartezaehler > 10000000) {
exit(
1,
"Es konnte keine EDP-Verbindung hergestellt werden! Der Waagen service hat sich beendet!");
}
}
if (threadAbas.isAlive()) {
log.info("abasrueckmeldung Thread wurde erzeugt");
// Die einzelnen Waagenüberwachungen starten
boolean alive = threadAbas.isAlive();
try {
for (int i = 0; i < waageConfigurationReader.getConfiguration().getAnzahlWaagen(); i++) {
log.trace("WaageThread " + i + " wird gestartet");
SocketClient socket =
new SocketClient(waageConfigurationReader.getConfiguration(), i, abasrueck);
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
log.error(e);
}
} else {
System.err.println("abasrueckmeldung Thread konnte nicht erzeugt werden");
log.error("abasrueckmeldung Thread konnte nicht erzeugt werden");
}
}
//
}
public class WaageWatchService {
private static final String myPID = ManagementFactory.getRuntimeMXBean().getName().split("@")[0];
private static final Logger log = Logger.getLogger(WaageWatchService.class);
private static final String ARGUMENT_CFGFILE = "-cfg";
private static String configfile = null;
private static File pidfile = null;
private static final String ARGUMENT_STOP = "-stop";
private static boolean stopService = false;
private static final String ARGUMENT_TEST = "-test";
private static boolean testService = false;
private static WaageConfigurationReader waageConfigurationReader =
WaageConfigurationReader.getInstance();
private static WaageConfiguration configuration = WaageConfiguration.getInstance();
private static void exit(int exitCode, final String exitMessage) {
if (exitCode == 0) {
log.info(exitMessage);
System.out.println("[INFO] " + exitMessage);
} else {
log.error(exitMessage);
System.err.println("[ERROR] " + exitMessage);
System.out.println("[ERROR] " + exitMessage);
}
if (pidfile != null) {
pidfile.delete();
}
Runtime.getRuntime().exit(exitCode);
}
private static void exit(int exitCode, final Throwable e) {
log.error(e.getMessage(), e);
System.err.println("[ERROR] " + e.getMessage());
if (pidfile != null) {
pidfile.delete();
}
try {
Thread.sleep(10000);
} catch (InterruptedException e1) {
log.error("Beim Beenden konnte der Thread nicht schlafen gelegt werden!", e1);
}
Runtime.getRuntime().exit(exitCode);
}
private static void exit(int exitCode, String exitMessage, Throwable e) {
log.error(exitMessage + " # " + e.getMessage(), e);
System.err.println("[ERROR] " + exitMessage + " # " + e.getMessage());
if (pidfile != null) {
pidfile.delete();
}
try {
Thread.sleep(10000);
} catch (InterruptedException e1) {
log.error("Beim Beenden konnte der Thread nicht schlafen gelegt werden!", e1);
}
Runtime.getRuntime().exit(exitCode);
}
/**
* @param args args[0] : configuration file
* @throws ConnectException
*/
public static void main(String[] args) {
/*
* Arguments
*/
for (int i = 0; i < args.length; i++) {
if (args[i].equals(ARGUMENT_CFGFILE)) {
configfile = args[++i];
} else if (args[i].equals(ARGUMENT_STOP)) {
stopService = true;
} else if (args[i].equals(ARGUMENT_TEST)) {
testService = true;
} else {
System.out.println("Unknown parameter '" + args[i] + "' will be ignored.");
}
}
if (!stopService) {
log.info("[" + myPID + "] ####### NEW WATCHSERVICE #######");
}
// configuration file
if (null == configfile) {
exit(1, "No configuration file given.");
}
File cfgFile = new File(configfile);
if (!cfgFile.exists()) {
exit(1, "Configuration file not found: " + cfgFile.getAbsolutePath());
}
if (!cfgFile.isFile()) {
exit(1, "Given file is no file: " + cfgFile.getAbsolutePath());
}
// PID file
setPidfile(cfgFile);
if (pidfile.exists()) {
int runningPID = getPidFromFile(pidfile);
if (processIsAlreadyRunning(runningPID, cfgFile.getName())) {
if (stopService) {
log.info("stopping process...");
try {
Runtime.getRuntime().exec("kill -9 " + runningPID);
pidfile.delete();
} catch (IOException e1) {
exit(1, "[" + runningPID + "] Could not stop service.", e1);
}
exit(0, "[" + runningPID + "] WaagenWatchService stopped.");
}
exit(1, "[error] Process already running (pid " + runningPID + ") ...");
} else {
if (stopService) {
pidfile.delete();
exit(0, "Specified WaagenWatchService is not running.");
}
// else: Write PID to PID file
}
}
// write PID to PID file
FileWriter w = null;
try {
w = new FileWriter(pidfile);
w.write(myPID);
} catch (IOException e) {
exit(1, "IOException in pid file.", e);
} finally {
try {
w.close();
} catch (IOException e) {
}
}
// AbasRueckmeldung erzeugen
if (!stopService) {
/*
* Configuration
*/
try {
waageConfigurationReader.read(cfgFile);
configuration = waageConfigurationReader.getConfiguration();
configuration.setPIDFile(pidfile);
} catch (IOException e) {
exit(1, e);
}
/*
* Existing files
*/
log.info("Handle existing files...");
log.info("Starting WaagenWatchservice...");
AbasRueckmeldung abasrueck;
Thread threadAbas =
new Thread(abasrueck = new AbasRueckmeldung(waageConfigurationReader.getConfiguration()));
threadAbas.start();
Long wartezaehler = new Long(0);
if (abasrueck == null) {
throw new NullPointerException("Es wurde kein Object abasRückmeldung angelegt!");
}
while (!abasrueck.isConnected()) {
wartezaehler = wartezaehler + 1;
if (wartezaehler % 100 == 0) {
log.info(wartezaehler.toString() + " Warten bis EDP-Verbindung steht");
}
if (wartezaehler > 10000000) {
exit(
1,
"Es konnte keine EDP-Verbindung hergestellt werden! Der Waagen service hat sich beendet!");
}
}
if (threadAbas.isAlive()) {
log.info("abasrueckmeldung Thread wurde erzeugt");
// Die einzelnen Waagenüberwachungen starten
boolean alive = threadAbas.isAlive();
try {
for (int i = 0; i < waageConfigurationReader.getConfiguration().getAnzahlWaagen(); i++) {
log.trace("WaageThread " + i + " wird gestartet");
SocketClient socket =
new SocketClient(waageConfigurationReader.getConfiguration(), i, abasrueck);
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
log.error(e);
}
} else {
System.err.println("abasrueckmeldung Thread konnte nicht erzeugt werden");
log.error("abasrueckmeldung Thread konnte nicht erzeugt werden");
}
}
//
}
private static void setPidfile(File cfgFile) {
String[] cF = configfile.split("/");
String cFName = cF[cF.length - 1];
cFName = cFName.substring(0, cFName.lastIndexOf("."));
if (null == cfgFile.getParent()) {
pidfile = new File(cFName + ".pid");
} else {
pidfile = new File(cfgFile.getParent().toString() + '/' + cFName + ".pid");
}
cFName = null;
cF = null;
}
private static boolean processIsAlreadyRunning(int pid, String cfgFile) {
log.debug("processIsAlreadyRunning(" + pid + ", " + cfgFile + ") ...");
if (pid == 0) {
exit(1, "PID file corrupted. Please check WatchService manually.");
}
String jarName = System.getProperty("java.class.path");
jarName = jarName.split("/")[jarName.split("/").length - 1];
String[] cmd = {
"/bin/sh",
"-c",
"ps -o \"pid user command\" -p "
+ pid
+ " | sed 1d | grep -E '.*"
+ jarName
+ ".* -cfg .*"
+ cfgFile
+ ".*' | wc -l"
};
if (cmd.length >= 3) {
log.debug(cmd[2]);
}
Process p = null;
try {
p = Runtime.getRuntime().exec(cmd);
} catch (IOException e) {
exit(1, "IOException in ps command.", e);
}
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
int numOfLines = 0;
try {
numOfLines = Integer.valueOf(br.readLine());
if (numOfLines >= 1) {
return true;
}
return false;
} catch (NumberFormatException e) {
log.error("NumberFormatException in numOfLines of BufferedReader.", e);
} catch (IOException e) {
log.error("IOException in BufferedReader", e);
} finally {
try {
br.close();
} catch (IOException e) {
}
}
return false;
}
private static int getPidFromFile(File pidfile) {
int runningPID = 0;
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader(pidfile));
runningPID = Integer.valueOf(br.readLine());
} catch (IOException e) {
exit(1, e);
} finally {
try {
br.close();
} catch (IOException e) {
}
}
return runningPID;
}
}
