public static synchronized void setUp()

in phoenix-queryserver-it/src/it/java/org/apache/phoenix/end2end/SecureQueryServerPhoenixDBIT.java [201:285]
58 lines of code
2 McCabe index (conditional complexity)

    public static synchronized void setUp() throws Exception {
        checkForCommandOnPath("python");
        checkForCommandOnPath("virtualenv");
        checkForCommandOnPath("kinit");

        final Configuration conf = UTIL.getConfiguration();
        conf.set("hbase.regionserver.wal.codec", "org.apache.hadoop.hbase.regionserver.wal.IndexedWALEditCodec");
        // Ensure the dirs we need are created/empty
        ensureIsEmptyDirectory(TEMP_DIR);
        ensureIsEmptyDirectory(KEYTAB_DIR);
        KEYTAB = new File(KEYTAB_DIR, "test.keytab");
        // Start a MiniKDC
        KDC = UTIL.setupMiniKdc(KEYTAB);
        // Create a service principal and spnego principal in one keytab
        // NB. Due to some apparent limitations between HDFS and HBase in the same JVM, trying to
        //     use separate identies for HBase and HDFS results in a GSS initiate error. The quick
        //     solution is to just use a single "service" principal instead of "hbase" and "hdfs"
        //     (or "dn" and "nn") per usual.
        KDC.createPrincipal(KEYTAB, SPNEGO_PRINCIPAL, PQS_PRINCIPAL, SERVICE_PRINCIPAL);
        // Start ZK by hand
        UTIL.startMiniZKCluster();

        // Create a number of unprivileged users
        createUsers(3);

        // Set configuration for HBase
        HBaseKerberosUtils.setPrincipalForTesting(SERVICE_PRINCIPAL + "@" + KDC.getRealm());
        HBaseKerberosUtils.setSecuredConfiguration(conf);
        setHdfsSecuredConfiguration(conf);
        UserGroupInformation.setConfiguration(conf);
        conf.setInt(HConstants.MASTER_PORT, 0);
        conf.setInt(HConstants.MASTER_INFO_PORT, 0);
        conf.setInt(HConstants.REGIONSERVER_PORT, 0);
        conf.setInt(HConstants.REGIONSERVER_INFO_PORT, 0);
        conf.setStrings(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
            TokenProvider.class.getName());

        // Secure Phoenix setup
        conf.set(QueryServerProperties.QUERY_SERVER_KERBEROS_HTTP_PRINCIPAL_ATTRIB_LEGACY,
            SPNEGO_PRINCIPAL + "@" + KDC.getRealm());
        conf.set(QueryServerProperties.QUERY_SERVER_HTTP_KEYTAB_FILENAME_ATTRIB,
            KEYTAB.getAbsolutePath());
        conf.set(QueryServerProperties.QUERY_SERVER_KERBEROS_PRINCIPAL_ATTRIB,
            PQS_PRINCIPAL + "@" + KDC.getRealm());
        conf.set(QueryServerProperties.QUERY_SERVER_KEYTAB_FILENAME_ATTRIB,
            KEYTAB.getAbsolutePath());
        conf.setBoolean(QueryServerProperties.QUERY_SERVER_DISABLE_KERBEROS_LOGIN, true);
        if(System.getProperty("do.not.randomize.pqs.port") == null) {
            conf.setInt(QueryServerProperties.QUERY_SERVER_HTTP_PORT_ATTRIB, 0);
        }
        // Required so that PQS can impersonate the end-users to HBase
        conf.set("hadoop.proxyuser.phoenixqs.groups", "*");
        conf.set("hadoop.proxyuser.phoenixqs.hosts", "*");

        // Clear the cached singletons so we can inject our own.
        InstanceResolver.clearSingletons();
        // Make sure the ConnectionInfo doesn't try to pull a default Configuration
        InstanceResolver.getSingleton(ConfigurationFactory.class, new ConfigurationFactory() {
            @Override
            public Configuration getConfiguration() {
                return conf;
            }
            @Override
            public Configuration getConfiguration(Configuration confToClone) {
                Configuration copy = new Configuration(conf);
                copy.addResource(confToClone);
                return copy;
            }
        });
        updateDefaultRealm();

        // Start HDFS
        UTIL.startMiniDFSCluster(1);
        // Use LocalHBaseCluster to avoid HBaseTestingUtility from doing something wrong
        // NB. I'm not actually sure what HTU does incorrect, but this was pulled from some test
        //     classes in HBase itself. I couldn't get HTU to work myself (2017/07/06)
        Path rootdir = UTIL.getDataTestDirOnTestFS(SecureQueryServerPhoenixDBIT.class.getSimpleName());
        // There is no setRootdir method that is available in all supported HBase versions.
        conf.set(HBASE_DIR, rootdir.toString());
        HBASE_CLUSTER = new LocalHBaseCluster(conf, 1);
        HBASE_CLUSTER.startup();

        // Then fork a thread with PQS in it.
        startQueryServer();
    }