/*
* 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.
*
* Copyright 2013 Near Infinity Corporation.
*/
package com.nearinfinity.honeycomb.hbase.generators;
import static com.google.common.base.Preconditions.checkState;
import java.util.Collection;
import java.util.Random;
import java.util.UUID;
import net.java.quickcheck.FrequencyGenerator;
import net.java.quickcheck.Generator;
import net.java.quickcheck.collection.Pair;
import net.java.quickcheck.generator.CombinedGenerators;
import net.java.quickcheck.generator.PrimitiveGenerators;
import net.java.quickcheck.generator.support.DefaultFrequencyGenerator;
import com.nearinfinity.honeycomb.hbase.rowkey.AutoIncRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.ColumnsRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.DataRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.IndexRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.IndexRowKeyBuilder;
import com.nearinfinity.honeycomb.hbase.rowkey.IndicesRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.RowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.RowsRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.SchemaRowKey;
import com.nearinfinity.honeycomb.hbase.rowkey.SortOrder;
import com.nearinfinity.honeycomb.hbase.rowkey.TablesRowKey;
import com.nearinfinity.honeycomb.mysql.QueryKey;
import com.nearinfinity.honeycomb.mysql.Row;
import com.nearinfinity.honeycomb.mysql.generators.QueryKeyGenerator;
import com.nearinfinity.honeycomb.mysql.generators.RowGenerator;
import com.nearinfinity.honeycomb.mysql.generators.TableSchemaGenerator;
import com.nearinfinity.honeycomb.mysql.generators.UUIDGenerator;
import com.nearinfinity.honeycomb.mysql.schema.IndexSchema;
import com.nearinfinity.honeycomb.mysql.schema.TableSchema;
public class RowKeyGenerator implements Generator<RowKey> {
private static final Random RAND = new Random();
private static final TablesRowKey tablesRow = new TablesRowKey();
private static final RowsRowKey rowsRow = new RowsRowKey();
private static final AutoIncRowKey autoIncRow = new AutoIncRowKey();
private static final SchemaRowKey schemaRow = new SchemaRowKey();
private static final Generator<Long> randIdGen = CombinedGenerators.uniqueValues(
PrimitiveGenerators.longs(0, 1024));
private static final Generator<SortOrder> randSortOrder = PrimitiveGenerators.enumValues(SortOrder.class);
private static final Generator<UUID> uuidGen = new UUIDGenerator();
private static final Generator<TableSchema> tableSchemaGen = new TableSchemaGenerator(1);
private final FrequencyGenerator<RowKey> rowKeyGen;
public RowKeyGenerator() {
// The duplicated generator types are testing the sorts of the different
// parts of the row key. E.G. There are two ColumnSchema generators.
// The first tests sorting on tableId, the second holds tableId constant
// and tests sorting on columnId.
rowKeyGen = new DefaultFrequencyGenerator<RowKey>(new PrefixRowGenerator(), 1);
rowKeyGen.add(new TableIDRowGenerator(), 1);
rowKeyGen.add(new DataRowKeyGenerator(randIdGen), 3);
rowKeyGen.add(new DataRowKeyGenerator(fixedLong()), 3);
rowKeyGen.add(new IndexRowKeyGenerator(randIdGen, randIdGen, tableSchemaGen.next(), randSortOrder), 4);
rowKeyGen.add(new IndexRowKeyGenerator(fixedLong(), randIdGen, tableSchemaGen.next(), randSortOrder), 4);
rowKeyGen.add(new IndexRowKeyGenerator(fixedLong(), fixedLong(), tableSchemaGen.next(), randSortOrder), 8);
}
private Generator<Long> fixedLong() {
return PrimitiveGenerators.fixedValues(randIdGen.next());
}
public static IndexRowKeyGenerator getAscIndexRowKeyGenerator(TableSchema schema) {
return new IndexRowKeyGenerator(
PrimitiveGenerators.fixedValues(randIdGen.next()),
PrimitiveGenerators.fixedValues(randIdGen.next()),
schema,
PrimitiveGenerators.fixedValues(SortOrder.Ascending)
);
}
public static IndexRowKeyGenerator getDescIndexRowKeyGenerator(TableSchema schema) {
return new IndexRowKeyGenerator(
PrimitiveGenerators.fixedValues(randIdGen.next()),
PrimitiveGenerators.fixedValues(randIdGen.next()),
schema,
PrimitiveGenerators.fixedValues(SortOrder.Descending)
);
}
@Override
public RowKey next() {
return rowKeyGen.next();
}
private class PrefixRowGenerator implements Generator<RowKey> {
@Override
public RowKey next() {
switch (RAND.nextInt(4)) {
case 0:
return tablesRow;
case 1:
return rowsRow;
case 2:
return autoIncRow;
case 3:
return schemaRow;
default:
throw new RuntimeException("Should never reach me");
}
}
}
private class TableIDRowGenerator implements Generator<RowKey> {
@Override
public RowKey next() {
if (RAND.nextBoolean()) {
return new ColumnsRowKey(randIdGen.next());
}
return new IndicesRowKey(randIdGen.next());
}
}
private class DataRowKeyGenerator implements Generator<RowKey> {
Generator<Long> tableIdGen;
public DataRowKeyGenerator(Generator<Long> generator) {
tableIdGen = generator;
}
@Override
public RowKey next() {
return new DataRowKey(tableIdGen.next(), uuidGen.next());
}
}
public static class IndexRowKeyGenerator implements Generator<RowKey> {
private final Generator<Long> tableIds;
private final Generator<Long> indexIds;
private final TableSchema tableSchema;
private final Generator<IndexSchema> indexSchemas;
private final Generator<Row> rows;
private final Generator<QueryKey> queryKeys;
private final Generator<SortOrder> order;
public IndexRowKeyGenerator(
Generator<Long> tableIds,
Generator<Long> indexIds,
TableSchema tableSchema,
Generator<SortOrder> order) {
this.tableIds = tableIds;
this.indexIds = indexIds;
this.tableSchema = tableSchema;
Collection<IndexSchema> indices = this.tableSchema.getIndices();
checkState(indices.size() > 0, "Generated table schema must have an index.");
indexSchemas = PrimitiveGenerators.fixedValues(indices);
rows = new RowGenerator(this.tableSchema);
queryKeys = new QueryKeyGenerator(this.tableSchema);
this.order = order;
}
@Override
public RowKey next() {
IndexRowKeyBuilder builder;
Row row = rows.next();
builder = IndexRowKeyBuilder
.newBuilder(tableIds.next(), indexIds.next())
.withRow(row,
indexSchemas.next().getIndexName(),
tableSchema)
.withUUID(row.getUUID());
return builder.withSortOrder(order.next()).build();
}
public Pair<IndexRowKey, QueryKey> nextWithQueryKey() {
QueryKey queryKey = queryKeys.next();
IndexRowKey rowKey = IndexRowKeyBuilder
.newBuilder(tableIds.next(), indexIds.next())
.withQueryKey(queryKey, tableSchema)
.withSortOrder(order.next())
.build();
return new Pair<IndexRowKey, QueryKey>(rowKey, queryKey);
}
}
}