me.tango.cassandra.bench.SchemaLoader.java Source code

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Here is the source code for me.tango.cassandra.bench.SchemaLoader.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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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 me.tango.cassandra.bench;

import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.KSMetaData;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.db.commitlog.CommitLog;
import org.apache.cassandra.db.compaction.LeveledCompactionStrategy;
import org.apache.cassandra.db.marshal.*;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.gms.Gossiper;
import org.apache.cassandra.io.compress.CompressionParameters;
import org.apache.cassandra.io.compress.SnappyCompressor;
import org.apache.cassandra.io.util.FileUtils;
import org.apache.cassandra.locator.AbstractReplicationStrategy;
import org.apache.cassandra.locator.SimpleStrategy;
import org.apache.cassandra.service.MigrationManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.util.*;

public class SchemaLoader {
    private static Logger logger = LoggerFactory.getLogger(SchemaLoader.class);

    public static void loadSchema() throws ConfigurationException {
        prepareServer();

        // Migrations aren't happy if gossiper is not started.  Even if we don't use migrations though,
        // some tests now expect us to start gossip for them.
        startGossiper();

        // if you're messing with low-level sstable stuff, it can be useful to inject the schema directly
        //        Schema.instance.load(schemaDefinition());
        for (KSMetaData ksm : schemaDefinition()) {
            MigrationManager.announceNewKeyspace(ksm);
        }

        DatabaseDescriptor.loadSchemas(false);
    }

    public void leakDetect() throws InterruptedException {
        System.gc();
        System.gc();
        System.gc();
        Thread.sleep(10);
    }

    public static void prepareServer() {
        // Cleanup first
        // cleanupAndLeaveDirs();

        CommitLog.instance.allocator.enableReserveSegmentCreation();

        Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
            public void uncaughtException(Thread t, Throwable e) {
                logger.error("Fatal exception in thread " + t, e);
            }
        });

        Keyspace.setInitialized();
    }

    public static void startGossiper() {
        Gossiper.instance.start((int) (System.currentTimeMillis() / 1000));
    }

    public static void stopGossiper() {
        Gossiper.instance.stop();
    }

    public static Collection<KSMetaData> schemaDefinition() throws ConfigurationException {
        List<KSMetaData> schema = new ArrayList<KSMetaData>();

        // A whole bucket of shorthand
        String ks1 = "Keyspace1";

        Class<? extends AbstractReplicationStrategy> simple = SimpleStrategy.class;

        Map<String, String> opts_rf1 = KSMetaData.optsWithRF(1);
        AbstractType bytes = BytesType.instance;

        AbstractType<?> composite = CompositeType.getInstance(Arrays
                .asList(new AbstractType<?>[] { BytesType.instance, TimeUUIDType.instance, IntegerType.instance }));
        AbstractType<?> compositeMaxMin = CompositeType
                .getInstance(Arrays.asList(new AbstractType<?>[] { BytesType.instance, IntegerType.instance }));
        Map<Byte, AbstractType<?>> aliases = new HashMap<Byte, AbstractType<?>>();
        aliases.put((byte) 'b', BytesType.instance);
        aliases.put((byte) 't', TimeUUIDType.instance);
        aliases.put((byte) 'B', ReversedType.getInstance(BytesType.instance));
        aliases.put((byte) 'T', ReversedType.getInstance(TimeUUIDType.instance));
        AbstractType<?> dynamicComposite = DynamicCompositeType.getInstance(aliases);

        Map<String, String> leveledOptions = new HashMap<String, String>();
        leveledOptions.put("sstable_size_in_mb", "64");
        Map<String, String> compressionOptions = new HashMap<String, String>();
        compressionOptions.put("sstable_compression", "");

        // Keyspace 1
        schema.add(KSMetaData.testMetadata(ks1, simple, opts_rf1,

                // Column Families
                standardCFMD(ks1, "Standard1").compactionStrategyClass(LeveledCompactionStrategy.class)
                        .maxIndexInterval(256).compactionStrategyOptions(leveledOptions)
                        .compressionParameters(CompressionParameters.create(compressionOptions))));

        return schema;
    }

    private static void useCompression(List<KSMetaData> schema) {
        for (KSMetaData ksm : schema) {
            for (CFMetaData cfm : ksm.cfMetaData().values()) {
                cfm.compressionParameters(new CompressionParameters(SnappyCompressor.instance));
            }
        }
    }

    private static CFMetaData standardCFMD(String ksName, String cfName) {
        return CFMetaData.denseCFMetaData(ksName, cfName, BytesType.instance);
    }

    public static void cleanupAndLeaveDirs() {
        mkdirs();
        cleanup();
        mkdirs();
        CommitLog.instance.resetUnsafe(); // cleanup screws w/ CommitLog, this brings it back to safe state
    }

    public static void cleanup() {
        // clean up commitlog
        String[] directoryNames = { DatabaseDescriptor.getCommitLogLocation(), };
        for (String dirName : directoryNames) {
            File dir = new File(dirName);
            if (!dir.exists())
                throw new RuntimeException("No such directory: " + dir.getAbsolutePath());
            FileUtils.deleteRecursive(dir);
        }

        cleanupSavedCaches();

        // clean up data directory which are stored as data directory/keyspace/data files
        for (String dirName : DatabaseDescriptor.getAllDataFileLocations()) {
            File dir = new File(dirName);
            if (!dir.exists())
                throw new RuntimeException("No such directory: " + dir.getAbsolutePath());
            FileUtils.deleteRecursive(dir);
        }
    }

    public static void mkdirs() {
        DatabaseDescriptor.createAllDirectories();
    }

    protected static void cleanupSavedCaches() {
        File cachesDir = new File(DatabaseDescriptor.getSavedCachesLocation());

        if (!cachesDir.exists() || !cachesDir.isDirectory())
            return;

        FileUtils.delete(cachesDir.listFiles());
    }
}