Java tutorial
package de.prozesskraft.ptest; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import java.io.UnsupportedEncodingException; import java.nio.file.FileAlreadyExistsException; import java.nio.file.FileVisitOption; import java.nio.file.FileVisitResult; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.nio.file.SimpleFileVisitor; import java.sql.Timestamp; import java.util.ArrayList; import java.util.Arrays; import java.util.Date; import java.util.EnumSet; import javax.xml.bind.JAXBException; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.GnuParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.OptionBuilder; import org.apache.commons.cli.Options; import org.ini4j.Ini; import org.ini4j.InvalidFileFormatException; import de.prozesskraft.commons.*; import de.prozesskraft.ptest.*; import java.nio.file.attribute.*; public class Launch { /*---------------------------- structure ----------------------------*/ static CommandLine commandline; static String web = "www.prozesskraft.de"; static String author = "alexander.vogel@prozesskraft.de"; static String version = "[% version %]"; static String date = "[% date %]"; static Ini ini; /*---------------------------- constructors ----------------------------*/ // public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException public static void main(String[] args) throws org.apache.commons.cli.ParseException, IOException { // try // { // if (args.length != 3) // { // System.out.println("Please specify processdefinition file (xml) and an outputfilename"); // } // // } // catch (ArrayIndexOutOfBoundsException e) // { // System.out.println("***ArrayIndexOutOfBoundsException: Please specify processdefinition.xml, openoffice_template.od*, newfile_for_processdefinitions.odt\n" + e.toString()); // } /*---------------------------- get options from ini-file ----------------------------*/ File inifile = new java.io.File( WhereAmI.getInstallDirectoryAbsolutePath(Launch.class) + "/" + "../etc/ptest-launch.ini"); if (inifile.exists()) { try { ini = new Ini(inifile); } catch (InvalidFileFormatException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } else { System.err.println("ini file does not exist: " + inifile.getAbsolutePath()); System.exit(1); } /*---------------------------- create boolean options ----------------------------*/ Option ohelp = new Option("help", "print this message"); Option ov = new Option("v", "prints version and build-date"); /*---------------------------- create argument options ----------------------------*/ Option ospl = OptionBuilder.withArgName("DIR").hasArg() .withDescription("[mandatory] directory with sample input data") // .isRequired() .create("spl"); Option oinstancedir = OptionBuilder.withArgName("DIR").hasArg() .withDescription("[mandatory, default: .] directory where the test will be performed") // .isRequired() .create("instancedir"); Option ocall = OptionBuilder.withArgName("FILE").hasArg() .withDescription("[mandatory, default: random call in spl-directory] file with call-string") // .isRequired() .create("call"); Option oaltapp = OptionBuilder.withArgName("STRING").hasArg() .withDescription( "[optional] alternative app. this String replaces the first line of the .call-file.") // .isRequired() .create("altapp"); Option oaddopt = OptionBuilder.withArgName("STRING").hasArg() .withDescription("[optional] add an option to the call.") // .isRequired() .create("addopt"); Option onolaunch = new Option("nolaunch", "only create instance directory, copy all spl files, but do NOT launch the process"); /*---------------------------- create options object ----------------------------*/ Options options = new Options(); options.addOption(ohelp); options.addOption(ov); options.addOption(ospl); options.addOption(oinstancedir); options.addOption(ocall); options.addOption(oaltapp); options.addOption(oaddopt); options.addOption(onolaunch); /*---------------------------- create the parser ----------------------------*/ CommandLineParser parser = new GnuParser(); try { // parse the command line arguments commandline = parser.parse(options, args); } catch (Exception exp) { // oops, something went wrong System.err.println("Parsing failed. Reason: " + exp.getMessage()); exiter(); } /*---------------------------- usage/help ----------------------------*/ if (commandline.hasOption("help")) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp("launch", options); System.exit(0); } else if (commandline.hasOption("v")) { System.out.println("web: " + web); System.out.println("author: " + author); System.out.println("version:" + version); System.out.println("date: " + date); System.exit(0); } /*---------------------------- ueberpruefen ob eine schlechte kombination von parametern angegeben wurde ----------------------------*/ boolean error = false; String spl = null; String instancedir = null; String call = null; String altapp = null; ArrayList<String> addopt = new ArrayList<String>(); // spl initialisieren if (commandline.hasOption("spl")) { spl = commandline.getOptionValue("spl"); } else { System.err.println("option -spl is mandatory"); error = true; } // instancedir initialisieren if (commandline.hasOption("instancedir")) { instancedir = commandline.getOptionValue("instancedir"); } else { instancedir = System.getProperty("user.dir"); } // call initialisieren if (commandline.hasOption("call")) { call = commandline.getOptionValue("call"); } // altapp initialisieren if (commandline.hasOption("altapp")) { altapp = commandline.getOptionValue("altapp"); } // addopt initialisieren if (commandline.hasOption("addopt")) { for (String actString : commandline.getOptionValues("addopt")) { addopt.add(actString); } } // wenn fehler, dann exit if (error) { exiter(); } /*---------------------------- die lizenz ueberpruefen und ggf abbrechen ----------------------------*/ // check for valid license ArrayList<String> allPortAtHost = new ArrayList<String>(); allPortAtHost.add(ini.get("license-server", "license-server-1")); allPortAtHost.add(ini.get("license-server", "license-server-2")); allPortAtHost.add(ini.get("license-server", "license-server-3")); MyLicense lic = new MyLicense(allPortAtHost, "1", "user-edition", "0.1"); // lizenz-logging ausgeben for (String actLine : (ArrayList<String>) lic.getLog()) { System.err.println(actLine); } // abbruch, wenn lizenz nicht valide if (!lic.isValid()) { System.exit(1); } /*---------------------------- die eigentliche business logic ----------------------------*/ // das erste spl-objekt geben lassen Spl actSpl = new Splset(spl).getSpl().get(0); // den call, result und altapp ueberschreiben actSpl.setName("default"); if (call != null) { actSpl.setCall(new java.io.File(call)); } if (actSpl.getCall() == null) { System.err.println("error: no call information found"); System.exit(1); } if (altapp != null) { actSpl.setAltapp(altapp); } if (addopt.size() > 0) { actSpl.setAddopt(addopt); } actSpl.setResult(null); // das instancedir erstellen java.io.File actSplInstanceDir = new java.io.File(instancedir); System.err.println("info: creating directory " + actSplInstanceDir.getCanonicalPath()); actSplInstanceDir.mkdirs(); // Inputdaten in das InstanceDir exportieren actSpl.exportInput(actSplInstanceDir); // exit, wenn --nolaunch if (commandline.hasOption("nolaunch")) { System.err.println("info: exiting, because of -nolaunch"); System.exit(0); } // das logfile des Syscalls (zum debuggen des programms "process syscall" gedacht) String AbsLogSyscallWrapper = actSplInstanceDir.getCanonicalPath() + "/.log"; String AbsStdout = actSplInstanceDir.getCanonicalPath() + "/.stdout.txt"; String AbsStderr = actSplInstanceDir.getCanonicalPath() + "/.stderr.txt"; String AbsPid = actSplInstanceDir.getCanonicalPath() + "/.pid"; // beim starten von syscall werden parameter mit whitespaces an diesen auseinandergeschnitten und der nachfolgende aufruf schlaeft fehl // deshalb sollen whitespaces durch eine 'zeichensequenz' ersetzt werden // syscall ersetzt die zeichensequenz wieder zurueck in ein " " ArrayList<String> callFuerSyscall = actSpl.getCallAsArrayList(); ArrayList<String> callFuerSyscallMitTrennzeichen = new ArrayList<String>(); for (String actString : callFuerSyscall) { callFuerSyscallMitTrennzeichen.add(actString.replaceAll("\\s+", "%WHITESPACE%")); } try { // den Aufrufstring fuer die externe App (process syscall --version 0.6.0)) splitten // beim aufruf muss das erste argument im path zu finden sein, sonst gibt die fehlermeldung 'no such file or directory' ArrayList<String> processSyscallWithArgs = new ArrayList<String>( Arrays.asList(ini.get("apps", "pkraft-syscall").split(" "))); // die sonstigen argumente hinzufuegen processSyscallWithArgs.add("-call"); processSyscallWithArgs.add(String.join(" ", callFuerSyscallMitTrennzeichen)); // processSyscallWithArgs.add("\""+call+"\""); processSyscallWithArgs.add("-stdout"); processSyscallWithArgs.add(AbsStdout); processSyscallWithArgs.add("-stderr"); processSyscallWithArgs.add(AbsStderr); processSyscallWithArgs.add("-pid"); processSyscallWithArgs.add(AbsPid); processSyscallWithArgs.add("-mylog"); processSyscallWithArgs.add(AbsLogSyscallWrapper); processSyscallWithArgs.add("-maxrun"); processSyscallWithArgs.add("" + 3000); // erstellen prozessbuilder ProcessBuilder pb = new ProcessBuilder(processSyscallWithArgs); // erweitern des PATHs um den prozesseigenen path // Map<String,String> env = pb.environment(); // String path = env.get("PATH"); // log("debug", "$PATH="+path); // path = this.parent.getAbsPath()+":"+path; // env.put("PATH", path); // log("info", "path: "+path); // setzen der aktuellen directory (in der syscall ausgefuehrt werden soll) java.io.File directory = new java.io.File(instancedir); System.err.println("info: setting execution directory to: " + directory.getCanonicalPath()); pb.directory(directory); // zum debuggen ein paar ausgaben // java.lang.Process p1 = Runtime.getRuntime().exec("date >> ~/tmp.debug.work.txt"); // p1.waitFor(); // java.lang.Process p2 = Runtime.getRuntime().exec("ls -la "+this.getParent().getAbsdir()+" >> ~/tmp.debug.work.txt"); // p2.waitFor(); // java.lang.Process pro = Runtime.getRuntime().exec("nautilus"); // java.lang.Process superpro = Runtime.getRuntime().exec(processSyscallWithArgs.toArray(new String[processSyscallWithArgs.size()])); // p3.waitFor(); System.err.println("info: calling: " + pb.command()); // starten des prozesses java.lang.Process sysproc = pb.start(); // einfangen der stdout- und stderr des subprozesses InputStream is_stdout = sysproc.getInputStream(); InputStream is_stderr = sysproc.getErrorStream(); // Send your InputStream to an InputStreamReader: InputStreamReader isr_stdout = new InputStreamReader(is_stdout); InputStreamReader isr_stderr = new InputStreamReader(is_stderr); // That needs to go to a BufferedReader: BufferedReader br_stdout = new BufferedReader(isr_stdout); BufferedReader br_stderr = new BufferedReader(isr_stderr); // // oeffnen der OutputStreams zu den Ausgabedateien // FileWriter fw_stdout = new FileWriter(sStdout); // FileWriter fw_stderr = new FileWriter(sStderr); // zeilenweise in die files schreiben String line_out = new String(); String line_err = new String(); while (br_stdout.readLine() != null) { } // while (((line_out = br_stdout.readLine()) != null) || ((line_err = br_stderr.readLine()) != null)) // { // if (!(line_out == null)) // { // System.out.println(line_out); // System.out.flush(); // } // if (!(line_err == null)) // { // System.err.println(line_err); // System.err.flush(); // } // } int exitValue = sysproc.waitFor(); // fw_stdout.close(); // fw_stderr.close(); System.err.println("exitvalue: " + exitValue); sysproc.destroy(); System.exit(exitValue); // alternativer aufruf // java.lang.Process sysproc = Runtime.getRuntime().exec(StringUtils.join(args_for_syscall, " ")); // log("info", "call executed. pid="+sysproc.hashCode()); // wait 2 seconds for becoming the pid-file visible // Thread.sleep(2000); // int exitValue = sysproc.waitFor(); // // der prozess soll bis laengstens // if(exitValue != 0) // { // System.err.println("error: call returned a value indicating an error: "+exitValue); // } // else // { // System.err.println("info: call returned value: "+exitValue); // } // System.err.println("info: "+new Date().toString()); // System.err.println("info: bye"); // // sysproc.destroy(); // // System.exit(sysproc.exitValue()); } catch (Exception e2) { System.err.println("error: " + e2.getMessage()); System.exit(1); } } private static void exiter() { System.err.println("try -help for help."); System.exit(1); } }