Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.storm.messaging.netty; import java.util.HashMap; import java.util.Map; import javax.security.sasl.Sasl; import org.apache.commons.codec.binary.Base64; import org.apache.commons.io.Charsets; import org.apache.storm.Config; class SaslUtils { public static final String KERBEROS = "GSSAPI"; public static final String AUTH_DIGEST_MD5 = "DIGEST-MD5"; public static final String DEFAULT_REALM = "default"; static Map<String, String> getSaslProps() { Map<String, String> props = new HashMap<>(); props.put(Sasl.POLICY_NOPLAINTEXT, "true"); return props; } /** * Encode a password as a base64-encoded char[] array. * * @param password * as a byte array. * @return password as a char array. */ static char[] encodePassword(byte[] password) { return new String(Base64.encodeBase64(password), Charsets.UTF_8).toCharArray(); } /** * Encode a identifier as a base64-encoded char[] array. * * @param identifier * as a byte array. * @return identifier as a char array. */ static String encodeIdentifier(byte[] identifier) { return new String(Base64.encodeBase64(identifier), Charsets.UTF_8); } static String getSecretKey(Map<String, Object> conf) { return conf == null || conf.isEmpty() ? null : (String) conf.get(Config.STORM_ZOOKEEPER_TOPOLOGY_AUTH_PAYLOAD); } }