/**
* Check whether a configuration is fully configured to be used with an Accumulo {@link
* InputFormat}.
*
* @param job the Hadoop context for the configured job
* @throws java.io.IOException if the context is improperly configured
* @since 1.5.0
*/
protected static void validateOptions(JobConf job) throws IOException {
final Instance inst = InputConfigurator.validateInstance(CLASS, job);
String principal = InputConfigurator.getPrincipal(CLASS, job);
AuthenticationToken token = InputConfigurator.getAuthenticationToken(CLASS, job);
// In secure mode, we need to convert the DelegationTokenStub into a real DelegationToken
token = ConfiguratorBase.unwrapAuthenticationToken(job, token);
Connector conn;
try {
conn = inst.getConnector(principal, token);
} catch (Exception e) {
throw new IOException(e);
}
InputConfigurator.validatePermissions(CLASS, job, conn);
}
/**
* Gets the user name from the configuration.
*
* @param job the Hadoop context for the configured job
* @return the user name
* @since 1.5.0
* @see #setConnectorInfo(JobConf, String, AuthenticationToken)
*/
protected static String getPrincipal(JobConf job) {
return InputConfigurator.getPrincipal(CLASS, job);
}
/**
* Gets the user name from the configuration.
*
* @param context the Hadoop context for the configured job
* @return the user name
* @since 1.5.0
* @see #setConnectorInfo(Job, String, AuthenticationToken)
*/
protected static String getPrincipal(JobContext context) {
return InputConfigurator.getPrincipal(CLASS, context.getConfiguration());
}
