cassandra-trunk/test/unit/org/apache/cassandra/db/guardrails/GuardrailPartitionKeysInSelectTest.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
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 * See the License for the specific language governing permissions and
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package org.apache.cassandra.db.guardrails;

import org.junit.Before;
import org.junit.Test;

public class GuardrailPartitionKeysInSelectTest extends ThresholdTester
{
    private static final int PARTITION_KEYS_SELECT_WARN_THRESHOLD = 3;
    private static final int PARTITION_KEYS_SELECT_FAIL_THRESHOLD = 5;
    private String tableName;

    public GuardrailPartitionKeysInSelectTest()
    {
        super(PARTITION_KEYS_SELECT_WARN_THRESHOLD,
              PARTITION_KEYS_SELECT_FAIL_THRESHOLD,
              Guardrails.partitionKeysInSelect,
              Guardrails::setPartitionKeysInSelectThreshold,
              Guardrails::getPartitionKeysInSelectWarnThreshold,
              Guardrails::getPartitionKeysInSelectFailThreshold);
    }

    @Before
    public void setupTest()
    {
        tableName = createTable("CREATE TABLE %s (k INT, c INT, v TEXT, PRIMARY KEY(k, c))");
    }

    @Test
    public void testSelectStatementAgainstInClausePartitionKeys() throws Throwable
    {
        assertValid("SELECT k, c, v FROM %s WHERE k=10");

        assertValid("SELECT k, c, v FROM %s WHERE k IN (2, 3)");

        assertValid("SELECT k, c, v FROM %s WHERE k = 2 and c IN (2, 3, 4, 5, 6, 7)");

        assertWarns("SELECT k, c, v FROM %s WHERE k IN (2, 3, 4, 5)",
                    String.format("Query with partition keys in IN clause on table %s, with " +
                                  "number of partition keys 4 exceeds warning threshold of 3.", tableName));

        assertFails("SELECT k, c, v FROM %s WHERE k IN (2, 3, 4, 5, 6, 7)",
                    String.format("Aborting query with partition keys in IN clause on table %s, " +
                                  "number of partition keys 6 exceeds fail threshold of 5.", tableName));
    }

    @Test
    public void testExcludedUsers() throws Throwable
    {
        testExcludedUsers(() -> "SELECT k, c, v FROM %s WHERE k IN (2, 3, 4, 5)",
                          () -> "SELECT k, c, v FROM %s WHERE k IN (2, 3, 4, 5, 6, 7)");
    }
}
