Example usage for org.apache.hadoop.util Shell execCommand

Introduction

In this page you can find the example usage for org.apache.hadoop.util Shell execCommand.

Prototype

public static String execCommand(String... cmd) throws IOException 

Source Link

Document

Static method to execute a shell command.

Usage

From source file:ParascaleFileStatus.java

License:Apache License

static String execCommand(final File f, final String... cmd) throws IOException {
    final String[] args = new String[cmd.length + 1];
    System.arraycopy(cmd, 0, args, 0, cmd.length);
    args[cmd.length] = f.getCanonicalPath();
    final String output = Shell.execCommand(args);
    return output;
}

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From source file:ChunkLocator.java

License:Apache License

protected String execCommand(File aFile, String[] command) throws IOException {
    final String[] args = new String[command.length + 1];
    System.arraycopy(command, 0, args, 0, command.length);
    args[command.length] = aFile.getCanonicalPath();
    return Shell.execCommand(args);
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.FixedUserIDMapper.java

License:Apache License

public static String getCurrentGroup() {
    File script = null;/*from   ww  w . j a  va2s  .  co  m*/
    try {
        script = File.createTempFile("group", ".sh");
        String[] cmd = { "bash", script.getAbsolutePath() };
        Files.write("groups | cut -d ' ' -f 1", script, Charsets.UTF_8);
        return Shell.execCommand(cmd).trim();
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        if (script != null) {
            script.delete();
        }
    }
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.FixedUserIDMapper.java

License:Apache License

@Override
public int getGIDForGroup(String user, int defaultGID) throws Exception {
    return Integer.parseInt(Shell.execCommand("id -g").trim());
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.FixedUserIDMapper.java

License:Apache License

@Override
public int getUIDForUser(String user, int defaultUID) throws Exception {
    return Integer.parseInt(Shell.execCommand("id -u").trim());
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.TestWithClient.java

License:Apache License

protected String getOwner(File file) throws IOException {
    String[] cmd = new String[] { "stat", "-c", "%U", file.getCanonicalPath() };
    return Shell.execCommand(cmd).trim();
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.TestWithClient.java

License:Apache License

protected String getOwnerGroup(File file) throws IOException {
    String[] cmd = new String[] { "/usr/bin/stat", "-c", "%G", file.getAbsolutePath() };
    return Shell.execCommand(cmd).trim();
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.UserIDMapper.java

License:Apache License

/**
 * @return String username associated with the current process
 *///from   www. j  ava 2  s.com
public static String getCurrentUser() {
    String user = System.getenv("USER");
    if (user != null) {
        try {
            user = Shell.execCommand("whoami").trim();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
    return user;
}

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From source file:com.cloudera.hadoop.hdfs.nfs.nfs4.UserIDMapperSystem.java

License:Apache License

protected synchronized int getCachedID(String[] cmd, String name, int defaultID,
        Map<String, Long> negativeCache, Map<String, IDCache<Integer>> postitveCache) throws Exception {
    Long timestamp = negativeCache.get(name);
    if (timestamp != null) {
        if (System.currentTimeMillis() - timestamp < mNegativeCacheTime) {
            return defaultID;
        } else {// www.  j a  v a 2 s.  c o m
            negativeCache.remove(name);
        }
    }

    IDCache<Integer> cache = postitveCache.get(name);
    if (cache != null) {
        if (System.currentTimeMillis() - cache.timestamp < mPositiveCacheTime) {
            return cache.id;
        } else {
            postitveCache.remove(name);
        }
    }

    String result = null;
    try {
        result = Shell.execCommand(cmd);
        int id = Integer.parseInt(result.trim());
        postitveCache.put(name, new IDCache<Integer>(id));
        return id;
    } catch (Shell.ExitCodeException e) {
        LOGGER.warn("Error parsing '" + result + "' for name '" + name + "': " + e.getMessage().trim());
    }
    negativeCache.put(name, System.currentTimeMillis());
    return defaultID;
}

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From source file:hdfs.FileUtil.java

License:Apache License

static String execCommand(File f, String... cmd) throws IOException {
    String[] args = new String[cmd.length + 1];
    System.arraycopy(cmd, 0, args, 0, cmd.length);
    args[cmd.length] = f.getCanonicalPath();
    String output = Shell.execCommand(args);
    return output;
}

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