core/src/main/java/org/apache/accumulo/testing/core/randomwalk/concurrent/Setup.java

/*
 * 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.testing.core.randomwalk.concurrent;

import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Random;

import org.apache.accumulo.testing.core.randomwalk.RandWalkEnv;
import org.apache.accumulo.testing.core.randomwalk.State;
import org.apache.accumulo.testing.core.randomwalk.Test;

public class Setup extends Test {

  @Override
  public void visit(State state, RandWalkEnv env, Properties props) throws Exception {
    Random rand = new Random();
    state.set("rand", rand);

    int numTables = Integer.parseInt(props.getProperty("numTables", "9"));
    int numNamespaces = Integer.parseInt(props.getProperty("numNamespaces", "2"));
    log.debug("numTables = " + numTables);
    log.debug("numNamespaces = " + numNamespaces);
    List<String> tables = new ArrayList<>();
    List<String> namespaces = new ArrayList<>();

    for (int i = 0; i < numNamespaces; i++) {
      namespaces.add(String.format("nspc_%03d", i));
    }

    // Make tables in the default namespace
    double tableCeil = Math.ceil((double) numTables / (numNamespaces + 1));
    for (int i = 0; i < tableCeil; i++) {
      tables.add(String.format("ctt_%03d", i));
    }

    // Make tables in each namespace
    double tableFloor = Math.floor(numTables / (numNamespaces + 1));
    for (String n : namespaces) {
      for (int i = 0; i < tableFloor; i++) {
        tables.add(String.format(n + ".ctt_%03d", i));
      }
    }

    state.set("tables", tables);
    state.set("namespaces", namespaces);

    int numUsers = Integer.parseInt(props.getProperty("numUsers", "5"));
    log.debug("numUsers = " + numUsers);
    List<String> users = new ArrayList<>();
    for (int i = 0; i < numUsers; i++)
      users.add(String.format("user%03d", i));
    state.set("users", users);
  }

}