Example usage for java.lang.reflect UndeclaredThrowableException UndeclaredThrowableException

Introduction

In this page you can find the example usage for java.lang.reflect UndeclaredThrowableException UndeclaredThrowableException.

Prototype

public UndeclaredThrowableException(Throwable undeclaredThrowable, String s) 

Source Link

Document

Constructs an UndeclaredThrowableException with the specified Throwable and a detail message.

Usage

From source file:com.bol.crazypigs.HBaseStorage15.java

/**
 * Get delegation token from hbase and add it to the Job
 *
 *///  w w  w  .ja  v a  2s . c  o m
@SuppressWarnings({ "rawtypes", "unchecked" })
private void addHBaseDelegationToken(Configuration hbaseConf, Job job) {

    if (!UDFContext.getUDFContext().isFrontend()) {
        return;
    }

    if ("kerberos".equalsIgnoreCase(hbaseConf.get(HBASE_SECURITY_CONF_KEY))) {
        // Will not be entering this block for 0.20.2 as it has no security.
        try {
            // getCurrentUser method is not public in 0.20.2
            Method m1 = UserGroupInformation.class.getMethod("getCurrentUser");
            UserGroupInformation currentUser = (UserGroupInformation) m1.invoke(null, (Object[]) null);
            // hasKerberosCredentials method not available in 0.20.2
            Method m2 = UserGroupInformation.class.getMethod("hasKerberosCredentials");
            boolean hasKerberosCredentials = (Boolean) m2.invoke(currentUser, (Object[]) null);
            if (hasKerberosCredentials) {
                // Class and method are available only from 0.92 security release
                Class tokenUtilClass = Class.forName("org.apache.hadoop.hbase.security.token.TokenUtil");
                Method m3 = tokenUtilClass.getMethod("obtainTokenForJob",
                        new Class[] { Configuration.class, UserGroupInformation.class, Job.class });
                m3.invoke(null, new Object[] { hbaseConf, currentUser, job });
            } else {
                LOG.info("Not fetching hbase delegation token as no Kerberos TGT is available");
            }
        } catch (ClassNotFoundException cnfe) {
            throw new RuntimeException("Failure loading TokenUtil class, " + "is secure RPC available?", cnfe);
        } catch (RuntimeException re) {
            throw re;
        } catch (Exception e) {
            throw new UndeclaredThrowableException(e, "Unexpected error calling TokenUtil.obtainTokenForJob()");
        }
    }
}

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From source file:org.apache.hadoop.security.UserGroupInformation.java

/**
 * Run the given action as the user, potentially throwing an exception.
 * @param <T> the return type of the run method
 * @param action the method to execute//w  w  w .  j av  a2 s. c  om
 * @return the value from the run method
 * @throws IOException if the action throws an IOException
 * @throws Error if the action throws an Error
 * @throws RuntimeException if the action throws a RuntimeException
 * @throws InterruptedException if the action throws an InterruptedException
 * @throws UndeclaredThrowableException if the action throws something else
 */
public <T> T doAs(PrivilegedExceptionAction<T> action) throws IOException, InterruptedException {
    try {
        logPriviledgedAction(subject, action);
        return Subject.doAs(subject, action);
    } catch (PrivilegedActionException pae) {
        Throwable cause = pae.getCause();
        LOG.error("PriviledgedActionException as:" + this + " cause:" + cause);
        if (cause instanceof IOException) {
            throw (IOException) cause;
        } else if (cause instanceof Error) {
            throw (Error) cause;
        } else if (cause instanceof RuntimeException) {
            throw (RuntimeException) cause;
        } else if (cause instanceof InterruptedException) {
            throw (InterruptedException) cause;
        } else {
            throw new UndeclaredThrowableException(pae, "Unknown exception in doAs");
        }
    }
}

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