org.apache.accumulo.harness.conf.AccumuloMiniClusterConfiguration.java Source code

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Here is the source code for org.apache.accumulo.harness.conf.AccumuloMiniClusterConfiguration.java

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/*
 * 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.accumulo.harness.conf;

import static java.util.Objects.requireNonNull;

import java.io.IOException;
import java.util.Map;

import org.apache.accumulo.cluster.ClusterUser;
import org.apache.accumulo.core.client.ClientConfiguration;
import org.apache.accumulo.core.client.security.tokens.AuthenticationToken;
import org.apache.accumulo.core.client.security.tokens.KerberosToken;
import org.apache.accumulo.core.client.security.tokens.PasswordToken;
import org.apache.accumulo.harness.AccumuloClusterHarness;
import org.apache.accumulo.harness.AccumuloClusterHarness.ClusterType;
import org.apache.accumulo.harness.MiniClusterHarness;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
import org.apache.hadoop.security.UserGroupInformation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Extract configuration properties for a MiniAccumuloCluster from Java properties
 */
public class AccumuloMiniClusterConfiguration extends AccumuloClusterPropertyConfiguration {
    private static final Logger log = LoggerFactory.getLogger(AccumuloMiniClusterConfiguration.class);
    private static final String TRUE = Boolean.toString(true);

    public static final String ACCUMULO_MINI_PRINCIPAL_KEY = ACCUMULO_MINI_PREFIX + "principal";
    public static final String ACCUMULO_MINI_PRINCIPAL_DEFAULT = "root";
    public static final String ACCUMULO_MINI_PASSWORD_KEY = ACCUMULO_MINI_PREFIX + "password";
    public static final String ACCUMULO_MINI_PASSWORD_DEFAULT = "rootPassword1";

    private final Map<String, String> conf;
    private final boolean saslEnabled;
    private ClientConfiguration clientConf;

    public AccumuloMiniClusterConfiguration() {
        ClusterType type = getClusterType();
        if (ClusterType.MINI != type) {
            throw new IllegalStateException("Expected only to see mini cluster state");
        }

        this.conf = getConfiguration(type);
        this.saslEnabled = TRUE.equals(System.getProperty(MiniClusterHarness.USE_KERBEROS_FOR_IT_OPTION));
        log.debug("SASL is {}enabled", (saslEnabled ? "" : "not "));
    }

    @Override
    public String getAdminPrincipal() {
        if (saslEnabled) {
            return AccumuloClusterHarness.getKdc().getRootUser().getPrincipal();
        } else {
            String principal = conf.get(ACCUMULO_MINI_PRINCIPAL_KEY);
            if (null == principal) {
                principal = ACCUMULO_MINI_PRINCIPAL_DEFAULT;
            }

            return principal;
        }
    }

    @Override
    public AuthenticationToken getAdminToken() {
        if (saslEnabled) {
            // Turn on Kerberos authentication so UGI acts properly
            final Configuration conf = new Configuration(false);
            conf.set(CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
            UserGroupInformation.setConfiguration(conf);

            ClusterUser rootUser = AccumuloClusterHarness.getKdc().getRootUser();
            try {
                UserGroupInformation.loginUserFromKeytab(rootUser.getPrincipal(),
                        rootUser.getKeytab().getAbsolutePath());
                return new KerberosToken();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        } else {
            String password = conf.get(ACCUMULO_MINI_PASSWORD_KEY);
            if (null == password) {
                password = ACCUMULO_MINI_PASSWORD_DEFAULT;
            }

            return new PasswordToken(password);
        }
    }

    @Override
    public ClusterType getClusterType() {
        return ClusterType.MINI;
    }

    @Override
    public ClientConfiguration getClientConf() {
        return clientConf;
    }

    public void setClientConf(ClientConfiguration conf) {
        requireNonNull(conf, "Client configuration was null");
        this.clientConf = conf;
    }
}