com.facebook.presto.kudu.KuduQueryRunnerFactory.java Source code

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Here is the source code for com.facebook.presto.kudu.KuduQueryRunnerFactory.java

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/*
 * Licensed 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 com.facebook.presto.kudu;

import com.facebook.presto.Session;
import com.facebook.presto.testing.QueryRunner;
import com.facebook.presto.tests.DistributedQueryRunner;
import com.facebook.presto.tpch.TpchPlugin;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import io.airlift.tpch.TpchTable;

import java.util.Map;

import static com.facebook.presto.spi.type.TimeZoneKey.UTC_KEY;
import static com.facebook.presto.testing.TestingSession.testSessionBuilder;
import static com.facebook.presto.tests.QueryAssertions.copyTpchTables;
import static com.facebook.presto.tpch.TpchMetadata.TINY_SCHEMA_NAME;
import static io.airlift.testing.Closeables.closeAllSuppress;
import static java.util.Locale.ENGLISH;

public class KuduQueryRunnerFactory {
    private KuduQueryRunnerFactory() {
    }

    public static QueryRunner createKuduQueryRunner(String schema) throws Exception {
        QueryRunner runner = null;
        String kuduSchema = isSchemaEmulationEnabled() ? schema : "default";
        try {
            runner = DistributedQueryRunner.builder(createSession(kuduSchema)).setNodeCount(3).build();

            installKuduConnector(runner, kuduSchema);

            return runner;
        } catch (Throwable e) {
            closeAllSuppress(e, runner);
            throw e;
        }
    }

    public static QueryRunner createKuduQueryRunnerTpch(TpchTable<?>... tables) throws Exception {
        return createKuduQueryRunnerTpch(ImmutableList.copyOf(tables));
    }

    public static QueryRunner createKuduQueryRunnerTpch(Iterable<TpchTable<?>> tables) throws Exception {
        DistributedQueryRunner runner = null;
        String kuduSchema = isSchemaEmulationEnabled() ? "tpch" : "default";
        try {
            runner = DistributedQueryRunner.builder(createSession(kuduSchema)).setNodeCount(3).build();

            runner.installPlugin(new TpchPlugin());
            runner.createCatalog("tpch", "tpch");

            installKuduConnector(runner, kuduSchema);

            copyTpchTables(runner, "tpch", TINY_SCHEMA_NAME, createSession(kuduSchema), tables);

            return runner;
        } catch (Throwable e) {
            closeAllSuppress(e, runner);
            throw e;
        }
    }

    private static boolean isSchemaEmulationEnabled() {
        return getSchemaEmulationPrefix() != null;
    }

    private static String getSchemaEmulationPrefix() {
        String prefix = System.getProperty("kudu.schema-emulation.prefix");
        if (prefix == null || prefix.equals("null")) {
            return null;
        } else if (prefix.isEmpty()) {
            return "";
        }
        return prefix;
    }

    private static void installKuduConnector(QueryRunner runner, String schema) {
        String masterAddresses = System.getProperty("kudu.client.master-addresses", "localhost:7051");
        Map<String, String> properties;
        if (!isSchemaEmulationEnabled()) {
            properties = ImmutableMap.of("kudu.schema-emulation.enabled", "false", "kudu.client.master-addresses",
                    masterAddresses);
        } else {
            properties = ImmutableMap.of("kudu.schema-emulation.enabled", "true", "kudu.schema-emulation.prefix",
                    getSchemaEmulationPrefix(), "kudu.client.master-addresses", masterAddresses);
        }

        runner.installPlugin(new KuduPlugin());
        runner.createCatalog("kudu", "kudu", properties);

        if (isSchemaEmulationEnabled()) {
            runner.execute("DROP SCHEMA IF EXISTS " + schema);
            runner.execute("CREATE SCHEMA " + schema);
        }
    }

    public static Session createSession(String schema) {
        return testSessionBuilder().setCatalog("kudu").setSchema(schema).setTimeZoneKey(UTC_KEY).setLocale(ENGLISH)
                .build();
    }
}