org.apache.accumulo.harness.SharedMiniClusterIT.java Source code

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Here is the source code for org.apache.accumulo.harness.SharedMiniClusterIT.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;

import java.io.File;
import java.util.Random;

import org.apache.accumulo.core.client.Connector;
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.minicluster.impl.MiniAccumuloClusterImpl;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
import org.apache.hadoop.security.UserGroupInformation;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Convenience class which starts a single MAC instance for a test to leverage.
 *
 * There isn't a good way to build this off of the {@link AccumuloClusterIT} (as would be the logical place) because we need to start the MiniAccumuloCluster in
 * a static BeforeClass-annotated method. Because it is static and invoked before any other BeforeClass methods in the implementation, the actual test classes
 * can't expose any information to tell the base class that it is to perform the one-MAC-per-class semantics.
 */
public abstract class SharedMiniClusterIT extends AccumuloIT {
    private static final Logger log = LoggerFactory.getLogger(SharedMiniClusterIT.class);
    private static final String TRUE = Boolean.toString(true);

    private static String principal = "root";
    private static String rootPassword;
    private static AuthenticationToken token;
    private static MiniAccumuloClusterImpl cluster;
    private static TestingKdc krb;

    @BeforeClass
    public static void startMiniCluster() throws Exception {
        File baseDir = new File(System.getProperty("user.dir") + "/target/mini-tests");
        baseDir.mkdirs();

        // Make a shared MAC instance instead of spinning up one per test method
        MiniClusterHarness harness = new MiniClusterHarness();

        if (TRUE.equals(System.getProperty(MiniClusterHarness.USE_KERBEROS_FOR_IT_OPTION))) {
            krb = new TestingKdc();
            krb.start();
            // Enabled krb auth
            Configuration conf = new Configuration(false);
            conf.set(CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
            UserGroupInformation.setConfiguration(conf);
            // Login as the client
            UserGroupInformation.loginUserFromKeytab(krb.getClientPrincipal(),
                    krb.getClientKeytab().getAbsolutePath());
            // Get the krb token
            principal = krb.getClientPrincipal();
            token = new KerberosToken(principal);
        } else {
            rootPassword = "rootPasswordShared1";
            token = new PasswordToken(rootPassword);
        }

        cluster = harness.create(SharedMiniClusterIT.class.getName(),
                System.currentTimeMillis() + "_" + new Random().nextInt(Short.MAX_VALUE), token, krb);
        cluster.start();
    }

    @AfterClass
    public static void stopMiniCluster() throws Exception {
        if (null != cluster) {
            try {
                cluster.stop();
            } catch (Exception e) {
                log.error("Failed to stop minicluster", e);
            }
        }
        if (null != krb) {
            try {
                krb.stop();
            } catch (Exception e) {
                log.error("Failed to stop KDC", e);
            }
        }
    }

    public static String getRootPassword() {
        return rootPassword;
    }

    public static AuthenticationToken getToken() {
        return token;
    }

    public static MiniAccumuloClusterImpl getCluster() {
        return cluster;
    }

    public static File getMiniClusterDir() {
        return cluster.getConfig().getDir();
    }

    public static Connector getConnector() {
        try {
            return getCluster().getConnector(principal, getToken());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}