Is there a way to execute ansible playbook from java.Can you please help me with reference could not find any good tutorial.
The simplest way is to run your command using ProcessBuilder:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class AnsibleServive {
public static void main(String[] args) {
runCommand("ansible-playbook test.yml -i host.ini");
}
private static void runCommand(String command) {
ProcessBuilder processBuilder = new ProcessBuilder();
processBuilder.command("bash", "-c", command);
try {
Process process = processBuilder.start();
StringBuilder output = new StringBuilder();
StringBuilder errOutput = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
BufferedReader errReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));
while ((line = errReader.readLine()) != null) {
errOutput.append(line + "\n");
}
int exitVal = process.waitFor();
if (exitVal == 0) {
System.out.println("Command Successfully executed.");
System.out.println(output);
} else {
System.err.println("Error ocured during running command.");
System.out.println(output);
System.err.println(errOutput);
}
} catch (IOException | InterruptedException e) {
System.err.println("Failed to execute command.");
e.printStackTrace();
}
}
}
Related
I have an insert/update trigger for a Oracle table.
Is there a way to send the details of the affected row(all columns) as a message to JMS?
I can write a Java Program, 'loadjava' that and call from the trigger.
Does this way affect performance?
Is there any native way of achieving this?
There is indeed a native way: use AQ JMS from PL/SQL, see https://docs.oracle.com/database/121/ADQUE/jm_exmpl.htm#ADQUE1600. In short you create an AQ queue with a JMS payload type; then you can post messages with PL/SQL from the trigger. An external Java client can connect to the database and read the messages with JMS.
I don't know how much a call into Java would affect performance, but I try to avoid it. It was a nice idea but it never really caught on, so it remains a fringe case and at least early on there were always issues. PL/SQL on the other hand works.
If you need to send data to another message queue product (tags activemq and mq) you can read the messages in Java and forward them. It adds an extra step, but it is straightforward.
loadjava have many problems and not stable if there is many classes loaded and many business, take a look Calling Java from Oracle, PLSQL causing oracle.aurora.vm.ReadOnlyObjectException
Oracle AQ as i know is not free.
I have implemented the same need after trying many possibilities by creating only 1 class loaded to oracle with loadjava which is called as a procedure by a trigger and have the responsability to call an external java program with all needed parameters and log external process output to a table, as below.
i have encoded text mesage to BASE64 because i used JSON format and some specials caracters can causes problems as a parameters to external java program.
i have used "#*#jms_separator#*#" as a separator in the sent parameter string to parse the content if i need to send many parameters to the external program.
the whole duration of ShellExecutor.shellExec is around 500ms and running since 1 year without any problem.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Arrays;
import java.util.concurrent.FutureTask;
import sun.misc.BASE64Encoder;
public class ShellExecutor {
static {
System.setProperty("file.encoding", "UTF-8");
}
private static final String INSERT_LOGS_SQL = "INSERT INTO JMS_LOG (TEXT_LOG) VALUES (?) ";
private static final String DEFAULT_CONNECTION = "jdbc:default:connection:";
public static String SQLshellExec(String command) throws Exception {
long start = System.currentTimeMillis();
StringBuffer result = new StringBuffer();
ShellExecutor worker = new ShellExecutor();
try {
worker.shellExec(command, result);
} finally {
result.append("exe duration : " + (System.currentTimeMillis() - start + "\n"));
Connection dbConnection = null;
PreparedStatement logsStatement = null;
try {
dbConnection = DriverManager.getConnection(DEFAULT_CONNECTION);
logsStatement = dbConnection.prepareStatement(INSERT_LOGS_SQL);
logsStatement.clearParameters();
Clob clob = dbConnection.createClob();
clob.setString(1, result.toString());
logsStatement.setClob(1, clob);
logsStatement.executeUpdate();
} finally {
if (logsStatement != null) {
try {
logsStatement.close();
} catch (Exception e) {
}
}
}
}
return result.substring(result.length() - 3090);
}
public void shellExec(String command, StringBuffer result) throws Exception {
Process process = null;
int exit = -10;
try {
InputStream stdout = null;
String[] params = command.split("#*#jms_separator#*#");
BASE64Encoder benc = new BASE64Encoder();
for (int i = 0; i < params.length; i++) {
if (params[i].contains("{") || params[i].contains("}") || params[i].contains("<")
|| params[i].contains("/>")) {
params[i] = benc.encodeBuffer(params[i].getBytes("UTF-8"));
}
}
result.append("Using separator : " + "#*#jms_separator#*#").append("\n")
.append("Calling : " + Arrays.toString(params)).append("\n");
ProcessBuilder pb = new ProcessBuilder(params);
pb.redirectErrorStream(true);
process = pb.start();
stdout = process.getInputStream();
LogStreamReader lsr = new LogStreamReader(stdout, result);
FutureTask<String> stdoutFuture = new FutureTask<String>(lsr, null);
Thread thread = new Thread(stdoutFuture, "LogStreamReader");
thread.start();
try {
exit = process.waitFor();
} catch (InterruptedException e) {
try {
exit = process.waitFor();
} catch (Exception e1) {
}
}
stdoutFuture.get();
result.append("\n").append("exit code :").append(exit).append("\n");
if (exit != 0) {
throw new RuntimeException(result.toString());
}
} catch (Exception e) {
result.append("\nException(").append(e.toString()).append("):").append(e.getCause()).append("\n\n");
e.printStackTrace(System.err);
throw e;
} finally {
if (process != null) {
process.destroy();
}
}
}
}
class LogStreamReader implements Runnable {
private BufferedReader reader;
private StringBuffer result;
public LogStreamReader(InputStream is, StringBuffer result) {
this.reader = new BufferedReader(new InputStreamReader(is));
this.result = result;
}
public void run() {
try {
String line = null;
while ((line = reader.readLine()) != null) {
result.append(line).append("\n");
}
} catch (Exception e) {
result.append("\nException(").append(e.toString()).append("):").append(e.getCause()).append("\n\n");
e.printStackTrace(System.err);
} finally {
try {
reader.close();
} catch (IOException e) {
}
}
}
}
The class of the external Java program packaged as an executable with all needed librairies, a simple JMS sender :
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import javax.jms.Destination;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.commons.codec.binary.Base64;
import org.json.JSONObject;
import progress.message.jclient.ConnectionFactory;
import progress.message.jimpl.Connection;
public class JMSSender {
private static SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss.SSS");
public static void main(String[] args) throws Throwable {
doSend(args[0]);
}
public static void doSend(String text)
throws Throwable {
if (Base64.isBase64(text)) {
text = new String(Base64.decodeBase64(text));
}
String content = "\n\nsending message :" + text;
Connection con = null;
Session session = null;
try {
ConnectionFactory cf = new ConnectionFactory();
session = con.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination dest = session.createTopic(destination) ;
MessageProducer producer = session.createProducer(dest);
con.start();
JSONObject json = new JSONObject();
json.put("content", text);
json.put("date", sdf.format(new Date()));
TextMessage tm = session.createTextMessage(json.toString());
producer.send(tm);
content += " \n\n" + "sent message :" + json.toString();
} catch (Throwable e) {
content += " \n\n" + e.toString() + " \n\n" + Arrays.toString(e.getStackTrace());
if (e.getCause() != null) {
content += " \n\nCause : " + e.getCause().toString() + " \n\n"
+ Arrays.toString(e.getCause().getStackTrace());
}
e.printStackTrace(System.err);
throw e;
} finally {
write("steps on sending message : " + content);
if (session != null) {
try {
session.commit();
session.close();
} catch (Exception e) {
}
session = null;
}
if (con != null) {
try {
con.stop();
con.close();
} catch (Exception e) {
}
}
}
}
private static void write(String log) {
try {
if (System.out != null) {
System.out.println(log);
}
} catch (Exception e2) {
}
}
}
I have made a simple JavaFx application, wich read/write the txt file (the code is below). I have tested it on windows platform (7 and higher).
After i gave app my friend for test on Mac. But when we run it, just do nothing. The GUI did not appear.
I tried run it through terminal (just "drug and drop" the icon to terminal, then enter in teminal. I don't know did i do right?) and terminal returned message "Permission denied". Can somebody explain what is require to run application, and what is not permitted exactly?
I found the similar question there but it have not answer...
Code:
import javafx.application.*;
import javafx.concurrent.Task;
import javafx.geometry.Orientation;
import javafx.geometry.Pos;
import javafx.scene.*;
import javafx.scene.control.Label;
import javafx.scene.control.SplitPane;
import javafx.scene.text.Font;
import javafx.stage.*;
import javafx.scene.layout.*;
import java.io.*;
import java.nio.charset.Charset;
import java.util.*;
import java.util.concurrent.ThreadLocalRandom;
public class Main extends Application {
static Properties props;
static double fontSize;
static String charsetName;
static long mills;
static String delimiter;
static String pathToDictionary;
static String pathErrLog;
static {
String pathFileProps = System.getProperty("user.dir") + "\\props.txt";
props = new Properties();
try {
FileInputStream fis = new FileInputStream(pathFileProps);
props.load(fis);
fontSize = Double.parseDouble(props.getProperty("Font"));
charsetName = props.getProperty("Charset");
mills = Long.parseLong(props.getProperty("mills"));
delimiter = props.getProperty("delimiter");
pathToDictionary = props.getProperty("dict.path");
fis.close();
} catch (IOException e) {
try {
props.put("Font", "20");
props.put("Charset", "UTF-8");
props.put("mills", "1000");
props.put("delimiter", "\t");
props.put("dict.path", System.getProperty("user.dir") + "\\dict.txt");
System.out.println("dictPath:" + System.getProperty("user.dir") + "\\dict.txt");
System.setProperty("file.encoding", "UTF-8");
FileOutputStream fos = new FileOutputStream(pathFileProps);
props.store(fos
, "Props description:" + "\n" +
"Font" + "\t\t" + "size of font's words " + "\n" +
"Charset" + "\t" + "charset of file-dictionary" + "\n" +
"mills" + "\t\t" + "per animations in milliseconds" + "\n" +
"delimiter" + "\t" + "delimiter between a pair words in string: eng<->rus \"<->\" is delimiter there." + "\n" +
"dict.path" + "\t" + "path to file-dictionary. Use \"/\"-symbol in path. Ex: C:/temp/dict.txt" + "\n" +
"\t\t\t" + "Use only eng symbols to set path!" + "\n" +
"\tYou can change only values!\n");
fos.close();
System.exit(0);
} catch (IOException e1) {
errPrint(e1,"Ошибка создания файла: " + pathFileProps + "\n");
}
}
}
ArrayList<String> dictionary = new ArrayList<>();
public static void errPrint(Exception exc, String note) {
if (pathErrLog == null) {
pathErrLog = System.getProperty("user.dir") + "\\errors.log";
}
try {
PrintWriter outFile = new PrintWriter(new FileWriter(pathErrLog, true));
outFile.println(note);
exc.printStackTrace(outFile);
outFile.close();
System.exit(0);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
launch(args);
}
public void init() throws IOException {
try {
BufferedReader reader = new BufferedReader(new FileReader(pathToDictionary));
int cnt = 0;
while (reader.ready()) {
String line = new String(reader.readLine().getBytes(), Charset.forName(charsetName));
dictionary.add(line);
}
} catch (FileNotFoundException e) {
errPrint(e,"Не найден файл " + pathToDictionary);
} catch (IOException e) {
errPrint(e,"Ошибка чтения файла " + pathToDictionary);
}
}
public void start(Stage myStage) {
myStage.setTitle("WordsLearner");
SplitPane sp = new SplitPane();
sp.setOrientation(Orientation.VERTICAL);
Label labelUp = new Label();
Label labelDw = new Label();
labelUp.setFont(new Font(fontSize));
labelDw.setFont(new Font(fontSize));
Scene scene = new Scene(sp, 600, 200);
myStage.setScene(scene);
final StackPane sp1 = new StackPane();
sp1.getChildren().add(labelUp);
sp1.setAlignment(Pos.BOTTOM_CENTER);
final StackPane sp2 = new StackPane();
sp2.getChildren().add(labelDw);
sp2.setAlignment(Pos.TOP_CENTER);
final boolean[] flag = {true};
sp.setOnMouseClicked(event -> {
Task<Void> task = new Task<Void>() {
#Override
public Void call() throws Exception {
if (flag[0]) {
flag[0] = false;
final String[] str = new String[1];
final String[] eng = new String[1];
final String[] rus = new String[1];
while (true) {
Platform.runLater(() -> {
try {
str[0] = dictionary.get(ThreadLocalRandom.current().nextInt(0, dictionary.size()));
eng[0] = str[0].split(delimiter)[0];
rus[0] = str[0].split(delimiter)[1];
labelUp.setText(eng[0]);
labelDw.setText(rus[0]);
} catch (Exception e) {
System.exit(-1);
}
});
Thread.sleep(mills);
}
}
return null;
}
};
new Thread(task).start();
});
sp.getItems().addAll(sp1, sp2);
sp.setDividerPositions(0.5f, 0.5f);
myStage.show();
}
public void stop() {
System.exit(0);
}
}
I really need some help. I am working on this assignment in school. I'm supposed to read a txt file into a list or string, and Encrypt that list of string, save it and Decrypt it back into a list of string. I was able to Encrypt it and save it, but when I try to Decrypt it back, it give me an error message about Bad Padding. I really don't how to fix this problem. Any help will be really good.
This is my code for Encrypting it
import java.awt.FileDialog;
import java.awt.Frame;
import java.io.*;
import java.nio.file.*;
import java.security.*;
import java.util.*;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
public class WordAnalysisMenu {
private static KeyGenerator kgen;
private static SecretKey key;
private static byte[] iv = null;
static Scanner sc = new Scanner(System.in);
private static void init(){
try {
kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
key = kgen.generateKey();
} catch (NoSuchAlgorithmException e) {
}
}
public static void main (String [] arge) throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IOException, InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
List<String> warPeace = new ArrayList<>();
while(true) {
int choice = menu();
switch(choice) {
case 0:
break;
case 1:
//select file for reading
warPeace = readFile();
break;
case 7:
//apply the cipher and save it to a file
init();
Frame frame = new Frame();
FileDialog fileDialog = new FileDialog(frame, "", FileDialog.SAVE);
fileDialog.setVisible(true);
Path path = Paths.get(fileDialog.getDirectory() + fileDialog.getFile());
iv = ListEncrypter(warPeace, path, key);
break;
case 8:
// read the ciper file, decode, and print
init();
frame = new Frame();
fileDialog = new FileDialog(frame, "", FileDialog.LOAD);
fileDialog.setVisible(true);
Path inputFile = Paths.get(fileDialog.getDirectory() + fileDialog.getFile());
warPeace = ListDecrypter(inputFile, key, iv);
break;
case 9:
System.out.println("Good bye!");
System.exit(0);
break;
default:
break;
}
}
}
public static int menu() {
int choice = 0;
System.out.println("\nPlease make a selection: ");
System.out.println("1.\t Select a file for reading.");
System.out.println("7.\t Apply cipher & save");
System.out.println("8.\t Read encoded file");
System.out.println("9.\t Exit");
Scanner scan = new Scanner(System.in);
try {
choice = scan.nextInt();
scan.nextLine();
}
catch(InputMismatchException ime) {
System.out.println("Invalid input!");
}
return choice;
}
public static List<String> readFile() {
List<String> word = new ArrayList<String>();
Frame f = new Frame();
FileDialog saveBox = new FileDialog(f, "Reading text file", FileDialog.LOAD);
saveBox.setVisible(true);
String insName = saveBox.getFile();
String fileSavePlace = saveBox.getDirectory();
File inFile = new File(fileSavePlace + insName);
BufferedReader in = null;
try {
in = new BufferedReader(new FileReader(inFile));
String line;
while (((line = in.readLine()) != null)) {
System.out.println(line);
String s = new String();
word.add(line);
}
} catch (IOException io) {
System.out.println("There Was An Error Reading The File");
} finally {
try {
in.close();
} catch (Exception e) {
e.getMessage();
}
}
return word;
}
private static byte[] ListEncrypter(List<String> content, Path outputFile, SecretKey key)
throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IOException, IllegalBlockSizeException, BadPaddingException {
Cipher encryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//Cipher encryptCipher = Cipher.getInstance("AES/CFB8/NoPadding");
encryptCipher.init(Cipher.ENCRYPT_MODE, key);
StringBuilder sb = new StringBuilder();
content.stream().forEach(e -> sb.append(e).append(System.lineSeparator()));
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
CipherOutputStream cipherOutputStream = new CipherOutputStream(outputStream, encryptCipher);
cipherOutputStream.write(encryptCipher.doFinal(sb.toString().getBytes()));
//cipherOutputStream.write(sb.toString().getBytes());
cipherOutputStream.flush();
cipherOutputStream.close();
ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
Files.copy(inputStream, outputFile, StandardCopyOption.REPLACE_EXISTING);
return encryptCipher.getIV();
}
private static List<String> ListDecrypter(Path inputFile, SecretKey key, byte[] iv) throws
NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
InvalidAlgorithmParameterException, IOException, IllegalBlockSizeException, BadPaddingException {
Cipher decryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//Cipher decryptCipher = Cipher.getInstance("AES/CBC/CFB8NoPadding");
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv);
decryptCipher.init(Cipher.DECRYPT_MODE, key, ivParameterSpec);
List<String> fileContent = new ArrayList<>();
String line = null;
ByteArrayInputStream inputStream = new ByteArrayInputStream(Files.readAllBytes(inputFile));
try(CipherInputStream chipherInputStream = new CipherInputStream(new FileInputStream(inputFile.toFile()), decryptCipher);
BufferedReader br = new BufferedReader(new InputStreamReader(chipherInputStream))) {
while ((line = br.readLine()) != null) {
System.out.println(line);
//fileContent.add(line);
}
}
return null;
}
}
This is the error message.
Exception in thread "main" java.io.IOException:
javax.crypto.BadPaddingException: Given final block not properly
padded
I want to run elastic search from a servlet.
I use this method in my servlet to run elasticsearch but it does not seem to work.
ejbsessionbean.runcommand( "cmd C:\\ELK\\elasticsearch\\bin\\elasticsearch";)
The code for runcommand follows:
public static void runcommand(String ch) throws IOException {
if (ch.length() <= 0) {
System.err.println("Need command to run");
System.exit(-1);
}
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec(ch);
InputStream is = process.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line;
System.out.printf("Output of running %s is:",
ch);
while ((line = br.readLine()) != null) {
System.out.println(line);
}
}
I have found kannel access log parser accesslog_parser.pl in utils folder.
How to use this file for parse.
Also i want convert kannel_access.log in csv format. Please help me.
Assuming Kannel log is at /var/log/kannel/access.log
This should do
cat /var/log/kannel/access.log |accesslog_parser.pl
May be an old question but I'd like to share this small tool a wrote in java for parsing kannel log files and outputing the results in csv format:
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.StringTokenizer;
/**
*
* #author bashizip
*/
public class KannelLogsParser {
static String fileName;
/**
* #param args the command line arguments
*/
public static void main(String[] args) throws IOException {
// fileName = args[0];
fileName = "access_kannel.txt";
String allLines = readLines(fileName);
parseAndWriteToCsv(allLines);
}
static String readLines(String fileName) {
BufferedReader br = null;
String sCurrentLine = null;
StringBuilder sb = new StringBuilder();
try {
br = new BufferedReader(
new FileReader(fileName));
while ((sCurrentLine = br.readLine()) != null) {
sb.append(sCurrentLine).append("\n");
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (br != null) {
br.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return sb.toString();
}
private static void parseAndWriteToCsv(String allLines) throws IOException {
String[] lines = allLines.split("\n");
System.out.println("lines to parse : " + lines.length);
StringTokenizer st;
StringBuilder output = new StringBuilder();
output.append("DATE;Heure;sent;SMS; SMSC; SVC; ACT; BINF; FID; from; to; flags; msg;;udh"+"\n");
int count = 0;
for (String line : lines) {
count++;
System.out.println("Parsing ..." + 100 * count / lines.length + "%");
st = new StringTokenizer(line, " ");
while (st.hasMoreTokens()) {
String currentToken = st.nextToken();
boolean messageToken = false;
boolean afterMessageToken = false;
if (currentToken.startsWith("[")) {
System.out.println(currentToken);
messageToken = currentToken.startsWith("[msg");
try {
currentToken = currentToken.substring(currentToken.indexOf(":") + 1, currentToken.indexOf("]"));
} catch (Exception e) {
System.err.println(e.getMessage());
messageToken = true;
currentToken = currentToken.substring(currentToken.indexOf(":") + 1);
}
}
currentToken = currentToken.replace("[", "");
currentToken = currentToken.replace("]", "");
output.append(currentToken);
if (!messageToken) {
output.append(";");
} else if (afterMessageToken) {
afterMessageToken = false;
output.append(" ");
} else {
output.append(" ");
afterMessageToken = true;
}
}
output.append("\n");
}
Files.write(Paths.get(fileName + ".csv"), output.toString().getBytes());
System.out.println("Output CVS file: " + fileName + ".csv");
System.out.println("Finished !");
}
}
Hope it can help someone one day :-)