Examples with ServiceException org.apache.hadoop.lib.server.ServiceException used on opensource projects

Example 1 with ServiceException

use of org.apache.hadoop.lib.server.ServiceException in project hadoop by apache.

the class FileSystemAccessService method init.

@Override
protected void init() throws ServiceException {
    LOG.info("Using FileSystemAccess JARs version [{}]", VersionInfo.getVersion());
    String security = getServiceConfig().get(AUTHENTICATION_TYPE, "simple").trim();
    if (security.equals("kerberos")) {
        String defaultName = getServer().getName();
        String keytab = System.getProperty("user.home") + "/" + defaultName + ".keytab";
        keytab = getServiceConfig().get(KERBEROS_KEYTAB, keytab).trim();
        if (keytab.length() == 0) {
            throw new ServiceException(FileSystemAccessException.ERROR.H01, KERBEROS_KEYTAB);
        }
        String principal = defaultName + "/localhost@LOCALHOST";
        principal = getServiceConfig().get(KERBEROS_PRINCIPAL, principal).trim();
        if (principal.length() == 0) {
            throw new ServiceException(FileSystemAccessException.ERROR.H01, KERBEROS_PRINCIPAL);
        }
        Configuration conf = new Configuration();
        conf.set(HADOOP_SECURITY_AUTHENTICATION, "kerberos");
        UserGroupInformation.setConfiguration(conf);
        try {
            UserGroupInformation.loginUserFromKeytab(principal, keytab);
        } catch (IOException ex) {
            throw new ServiceException(FileSystemAccessException.ERROR.H02, ex.getMessage(), ex);
        }
        LOG.info("Using FileSystemAccess Kerberos authentication, principal [{}] keytab [{}]", principal, keytab);
    } else if (security.equals("simple")) {
        Configuration conf = new Configuration();
        conf.set(HADOOP_SECURITY_AUTHENTICATION, "simple");
        UserGroupInformation.setConfiguration(conf);
        LOG.info("Using FileSystemAccess simple/pseudo authentication, principal [{}]", System.getProperty("user.name"));
    } else {
        throw new ServiceException(FileSystemAccessException.ERROR.H09, security);
    }
    String hadoopConfDirProp = getServiceConfig().get(HADOOP_CONF_DIR, getServer().getConfigDir());
    File hadoopConfDir = new File(hadoopConfDirProp).getAbsoluteFile();
    if (!hadoopConfDir.exists()) {
        hadoopConfDir = new File(getServer().getConfigDir()).getAbsoluteFile();
    }
    if (!hadoopConfDir.exists()) {
        throw new ServiceException(FileSystemAccessException.ERROR.H10, hadoopConfDir);
    }
    try {
        serviceHadoopConf = loadHadoopConf(hadoopConfDir);
    } catch (IOException ex) {
        throw new ServiceException(FileSystemAccessException.ERROR.H11, ex.toString(), ex);
    }
    LOG.debug("FileSystemAccess FileSystem configuration:");
    for (Map.Entry entry : serviceHadoopConf) {
        LOG.debug("  {} = {}", entry.getKey(), entry.getValue());
    }
    setRequiredServiceHadoopConf(serviceHadoopConf);
    nameNodeWhitelist = toLowerCase(getServiceConfig().getTrimmedStringCollection(NAME_NODE_WHITELIST));
}