Example usage for org.apache.commons.lang RandomStringUtils randomAlphanumeric

Introduction

In this page you can find the example usage for org.apache.commons.lang RandomStringUtils randomAlphanumeric.

Prototype

public static String randomAlphanumeric(int count)

Source Link

Document

Creates a random string whose length is the number of characters specified.

Characters will be chosen from the set of alpha-numeric characters.

Usage

From source file:org.apache.hadoop.fs.FSTestWrapper.java

public FSTestWrapper(String testRootDir) {
    // Use default test dir if not provided
    if (testRootDir == null || testRootDir.isEmpty()) {
        testRootDir = GenericTestUtils.getTestDir().getAbsolutePath();
    }//from  w  w w.j a va  2s  . c om
    // salt test dir with some random digits for safe parallel runs
    this.testRootDir = testRootDir + "/" + RandomStringUtils.randomAlphanumeric(10);
}

From source file:org.apache.hadoop.fs.TestWebHdfsFileContextMainOperations.java

@Before
public void setUp() throws Exception {
    URI webhdfsUrlReal = getWebhdfsUrl();
    Path testBuildData = new Path(
            webhdfsUrlReal + "/build/test/data/" + RandomStringUtils.randomAlphanumeric(10));
    Path rootPath = new Path(testBuildData, "root-uri");

    localFsRootPath = rootPath.makeQualified(webhdfsUrlReal, null);
    fc.mkdir(getTestRootPath(fc, "test"), FileContext.DEFAULT_PERM, true);
}

From source file:org.apache.hadoop.hdfs.TestDFSUtil.java

@Test
public void testUTFconversion() throws Exception {

    Random r = new Random(System.currentTimeMillis());
    for (int i = 0; i < 100000; i++) {
        // create random length string
        int len = r.nextInt(50) + 1;
        // full unicode string
        validateStringConversion(RandomStringUtils.random(len));
        // only ascii characters
        validateStringConversion(RandomStringUtils.randomAscii(len));
        // only alphanumeric characters
        validateStringConversion(RandomStringUtils.randomAlphanumeric(len));
        // validate singe-character, which translates to 1,2,3 bytes
        validateStringConversion(generateOneCharString(1));
        validateStringConversion(generateOneCharString(2));
        validateStringConversion(generateOneCharString(3));
    }/*from   w  w w .j  a va  2  s  .  co  m*/
}

From source file:org.apache.hadoop.hdfs.util.TestPosixUserNameChecker.java

@Test
public void test() {
    check("abc", true);
    check("a_bc", true);
    check("a1234bc", true);
    check("a1234bc45", true);
    check("_a1234bc45$", true);
    check("_a123-4bc45$", true);
    check("abc_", true);
    check("ab-c_$", true);
    check("_abc", true);
    check("ab-c$", true);
    check("-abc", false);
    check("-abc_", false);
    check("a$bc", false);
    check("9abc", false);
    check("-abc", false);
    check("$abc", false);
    check("", false);
    check(null, false);//w  w  w .jav a  2 s  . co  m
    check(RandomStringUtils.randomAlphabetic(100).toLowerCase(), true);
    check(RandomStringUtils.randomNumeric(100), false);
    check("a" + RandomStringUtils.randomNumeric(100), true);
    check("_" + RandomStringUtils.randomNumeric(100), true);
    check("a" + RandomStringUtils.randomAlphanumeric(100).toLowerCase(), true);
    check("_" + RandomStringUtils.randomAlphanumeric(100).toLowerCase(), true);
    check(RandomStringUtils.random(1000), false); //unicode
}

From source file:org.apache.hadoop.mapreduce.checkpoint.RandomNameCNS.java

@Override
public String getNewName() {
    return "checkpoint_" + RandomStringUtils.randomAlphanumeric(8);
}

From source file:org.apache.hadoop.test.GenericTestUtils.java

/**
 * Get a temp path. This may or may not be relative; it depends on what the
 * {@link #SYSPROP_TEST_DATA_DIR} is set to. If unset, it returns a path
 * under the relative path {@link #DEFAULT_TEST_DATA_PATH}
 * @param subpath sub path, with no leading "/" character
 * @return a string to use in paths//www .j av a2s  . c  o m
 */
public static String getRandomizedTempPath() {
    return getTempPath(RandomStringUtils.randomAlphanumeric(10));
}

From source file:org.apache.hadoop.test.PathUtils.java

public static File getTestDir(Class<?> caller, boolean create) {
    File dir = new File(System.getProperty("test.build.data", "target/test/data") + "/"
            + RandomStringUtils.randomAlphanumeric(10), caller.getSimpleName());
    if (create) {
        dir.mkdirs();//w  w w  .j  av a2s. c  o  m
    }
    return dir;
}

From source file:org.apache.hadoop.yarn.server.nodemanager.DirectoryCollection.java

/**
 * Function to test whether a dir is working correctly by actually creating a
 * random directory./*from  ww w .  j  ava2  s.c om*/
 *
 * @param dir
 *          the dir to test
 */
private void verifyDirUsingMkdir(File dir) throws IOException {

    String randomDirName = RandomStringUtils.randomAlphanumeric(5);
    File target = new File(dir, randomDirName);
    int i = 0;
    while (target.exists()) {

        randomDirName = RandomStringUtils.randomAlphanumeric(5) + i;
        target = new File(dir, randomDirName);
        i++;
    }
    try {
        DiskChecker.checkDir(target);
    } finally {
        FileUtils.deleteQuietly(target);
    }
}

From source file:org.apache.hadoop.yarn.server.resourcemanager.security.TestingRMAppSecurityActions.java

@Override
public String generateJWT(JWTSecurityHandler.JWTMaterialParameter jwtParameter)
        throws URISyntaxException, IOException {
    return RandomStringUtils.randomAlphanumeric(16);
}

From source file:org.apache.hadoop.yarn.server.resourcemanager.security.TestingRMAppSecurityActions.java

@Override
public String renewJWT(JWTSecurityHandler.JWTMaterialParameter jwtParameter)
        throws URISyntaxException, IOException {
    // Nothing to do
    LOG.info("Renewing JWT " + jwtParameter.getAppUser() + "/" + jwtParameter.getApplicationId());
    return RandomStringUtils.randomAlphanumeric(16);
}