Example usage for java.lang Process getInputStream

List of usage examples for java.lang Process getInputStream

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Introduction

In this page you can find the example usage for java.lang Process getInputStream.

Prototype

public abstract InputStream getInputStream();

Source Link

Document

Returns the input stream connected to the normal output of the process.

Usage

From source file:edu.cwru.jpdg.Dotty.java

/**
 * Compiles the graph to dotty.//from   w  w  w.j  a  v a2  s  . c  o  m
 */
public static String dotty(String graph) {

    byte[] bytes = graph.getBytes();

    try {
        ProcessBuilder pb = new ProcessBuilder("dotty");
        pb.redirectError(ProcessBuilder.Redirect.INHERIT);
        Process p = pb.start();
        OutputStream stdin = p.getOutputStream();
        stdin.write(bytes);
        stdin.close();

        String line;
        BufferedReader stdout = new BufferedReader(new InputStreamReader(p.getInputStream()));
        List<String> stdout_lines = new ArrayList<String>();
        line = stdout.readLine();
        while (line != null) {
            stdout_lines.add(line);
            line = stdout.readLine();
        }
        if (p.waitFor() != 0) {
            throw new RuntimeException("javac failed");
        }

        return StringUtils.join(stdout_lines, "\n");
    } catch (InterruptedException e) {
        throw new RuntimeException(e.getMessage());
    } catch (IOException e) {
        throw new RuntimeException(e.getMessage());
    }
}

From source file:edu.ku.brc.af.ui.ProcessListUtil.java

/**
 * @return/*from   w w  w. j av a2  s . c o m*/
 */
public static List<List<String>> getRunningProcessesUnix() {
    List<List<String>> processes = new ArrayList<List<String>>();
    try {
        Process process = Runtime.getRuntime().exec("ps aux");
        BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        Integer cmdInx = null;
        while ((line = input.readLine()) != null) {
            if (cmdInx == null) {
                cmdInx = line.indexOf("COMMAND");
            }
            if (!line.trim().equals("")) {
                ArrayList<String> fields = new ArrayList<String>();
                String[] tokens = StringUtils.split(line.substring(0, cmdInx).trim(), ' ');
                for (String tok : tokens) {
                    fields.add(tok);
                }
                fields.add(line.substring(cmdInx, line.length()));
                processes.add(fields);
                //System.out.println("["+line.substring(0, cmdInx).trim()+"]["+line.substring(cmdInx, line.length())+"]");
            }
        }
        input.close();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return processes;
}

From source file:at.ac.tuwien.dsg.cloud.salsa.engine.utils.SystemFunctions.java

public static int executeCommandGetReturnCode(String cmd, String workingDir, String executeFrom) {
    if (workingDir == null) {
        workingDir = "/tmp";
    }/*w w  w .java  2  s  .c  o  m*/
    logger.debug("Execute command: " + cmd + ". Working dir: " + workingDir);
    try {
        String[] splitStr = cmd.split("\\s+");
        ProcessBuilder pb = new ProcessBuilder(splitStr);
        pb.directory(new File(workingDir));
        pb = pb.redirectErrorStream(true); // this is important to redirect the error stream to output stream, prevent blocking with long output
        Map<String, String> env = pb.environment();
        String path = env.get("PATH");
        path = path + File.pathSeparator + "/usr/bin:/usr/sbin";
        logger.debug("PATH to execute command: " + pb.environment().get("PATH"));
        env.put("PATH", path);

        Process p = pb.start();

        BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String line;
        while ((line = reader.readLine()) != null) {
            logger.debug(line);
        }
        p.waitFor();
        int returnCode = p.exitValue();
        logger.debug("Execute command done: " + cmd + ". Get return code: " + returnCode);
        return returnCode;
    } catch (InterruptedException | IOException e1) {
        logger.error("Error when execute command. Error: " + e1);
    }
    return -1;
}

From source file:com.baifendian.swordfish.execserver.utils.OsUtil.java

/**
 *  linux/windows /*from www  .j a  v a2s.c  o  m*/
 *
 * @param commandStr
 * @return
 * @throws IOException
 */
public static String exeCmd(String commandStr) throws IOException {
    BufferedReader br = null;

    try {
        Process p = Runtime.getRuntime().exec(commandStr);
        br = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String line;
        StringBuilder sb = new StringBuilder();

        while ((line = br.readLine()) != null) {
            sb.append(line + "\n");
        }

        return sb.toString();
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (Exception e) {
                logger.error("close reader", e);
            }
        }
    }
}

From source file:hudson.os.WindowsUtil.java

/**
 * Creates an NTFS junction point if supported. Similar to symbolic links, NTFS provides junction points which
 * provide different features than symbolic links.
 * @param junction NTFS junction point to create
 * @param target target directory to junction
 * @return the newly created junction point
 * @throws IOException if the call to mklink exits with a non-zero status code
 * @throws InterruptedException if the call to mklink is interrupted before completing
 * @throws AssertionError if this method is called on a non-Windows platform
 *//*from   w  w w  .j a va  2s.  c  o  m*/
public static @Nonnull File createJunction(@Nonnull File junction, @Nonnull File target)
        throws IOException, InterruptedException {
    assertTrue(Functions.isWindows());
    Process mklink = execCmd("mklink", "/J", junction.getAbsolutePath(), target.getAbsolutePath());
    int result = mklink.waitFor();
    if (result != 0) {
        String stderr = IOUtils.toString(mklink.getErrorStream());
        String stdout = IOUtils.toString(mklink.getInputStream());
        throw new IOException("Process exited with " + result + "\nStandard Output:\n" + stdout
                + "\nError Output:\n" + stderr);
    }
    return junction;
}

From source file:krasa.visualvm.VisualVMHelper.java

private static SpecVersion getJavaVersion(String jdkHome) {
    try {/* ww w . ja va 2  s  .  c o m*/
        String javaCmd = jdkHome + File.separator + "bin" + File.separator + "java";
        Process prc = Runtime.getRuntime().exec(new String[] { javaCmd, "-version" });

        String version = getJavaVersion(prc.getErrorStream());
        if (version == null) {
            version = getJavaVersion(prc.getInputStream());
        }
        return new SpecVersion(version);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:de.uni_freiburg.informatik.ultimate.licence_manager.authors.SvnAuthorProvider.java

private static boolean isSvnAvailable() {
    final ProcessBuilder pbuilder = new ProcessBuilder("svn", "--version");
    try {/*from   w  w  w  .  j  a  va 2 s  .  com*/
        final Process process = pbuilder.start();
        if (process.waitFor(1000, TimeUnit.MILLISECONDS)) {
            final List<String> lines = IOUtils.readLines(process.getInputStream(), Charset.defaultCharset());
            if (lines == null || lines.isEmpty()) {
                return false;
            }
            sSvnVersion = lines.get(0);
            return true;
        }
    } catch (IOException | InterruptedException e) {
        System.err.println("Could not find 'svn' executable, disabling author provider");
        return false;
    }
    return false;
}

From source file:com.ebiznext.flume.source.TestMultiLineExecSource.java

private static List<String> exec(String command) throws Exception {
    String[] commandArgs = command.split("\\s+");
    Process process = new ProcessBuilder(commandArgs).start();
    BufferedReader reader = null;
    try {/*from  w  ww. j a  v a 2  s .c  o m*/
        reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
        List<String> result = Lists.newArrayList();
        String line;
        while ((line = reader.readLine()) != null) {
            result.add(line);
        }
        return result;
    } finally {
        process.destroy();
        if (reader != null) {
            reader.close();
        }
        int exit = process.waitFor();
        if (exit != 0) {
            throw new IllegalStateException("Command [" + command + "] exited with " + exit);
        }
    }
}

From source file:Main.java

public static String do_exec_with_root(String cmd) {
    String s = "\n";
    try {/*  w  w  w.  ja  v a2 s  .c o  m*/
        Process su_p = Runtime.getRuntime().exec("su");
        DataOutputStream dataOutputStream = new DataOutputStream(su_p.getOutputStream());
        dataOutputStream.writeBytes(cmd + "\n");
        dataOutputStream.writeBytes("exit" + "\n");
        dataOutputStream.flush();
        BufferedReader in = new BufferedReader(new InputStreamReader(su_p.getInputStream()));
        String line = null;
        while ((line = in.readLine()) != null) {
            s += line + "\n";
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return s;
}

From source file:com.kylinolap.metadata.tool.HiveSourceTableMgmt.java

public static InputStream executeHiveCommand(String command) throws IOException {

    ProcessBuilder pb = new ProcessBuilder("/bin/bash", "-c", "hive -e \"" + command + "\"");

    // Run hive/*from  w  w w  . ja v a 2s .c  o  m*/
    pb.redirectErrorStream(true);
    Process p = pb.start();
    InputStream is = p.getInputStream();

    return is;
}