| /* |
| * 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.cassandra.db.guardrails; |
| |
| import org.junit.Test; |
| |
| import org.apache.cassandra.schema.Schema; |
| |
| import static java.lang.String.format; |
| |
| /** |
| * Tests the guardrail for the max number of user keyspaces, {@link Guardrails#keyspaces}. |
| */ |
| public class GuardrailKeyspacesTest extends ThresholdTester |
| { |
| private static final int WARN_THRESHOLD = 3; // CQLTester creates two keyspaces |
| private static final int FAIL_THRESHOLD = WARN_THRESHOLD + 1; |
| |
| public GuardrailKeyspacesTest() |
| { |
| super(WARN_THRESHOLD, |
| FAIL_THRESHOLD, |
| Guardrails.keyspaces, |
| Guardrails::setKeyspacesThreshold, |
| Guardrails::getKeyspacesWarnThreshold, |
| Guardrails::getKeyspacesFailThreshold); |
| } |
| |
| @Override |
| protected long currentValue() |
| { |
| return Schema.instance.getUserKeyspaces().size(); |
| } |
| |
| @Test |
| public void testCreateKeyspace() throws Throwable |
| { |
| // create keyspaces until hitting the two warn/fail thresholds |
| String k1 = assertCreateKeyspaceValid(); |
| String k2 = assertCreateKeyspaceWarns(); |
| assertCreateKeyspaceFails(); |
| |
| // drop a keyspace and hit the warn/fail threshold again |
| dropKeyspace(k2); |
| String k3 = assertCreateKeyspaceWarns(); |
| assertCreateKeyspaceFails(); |
| |
| // drop two keyspaces and hit the warn/fail threshold again |
| dropKeyspace(k1); |
| dropKeyspace(k3); |
| assertCreateKeyspaceValid(); |
| assertCreateKeyspaceWarns(); |
| assertCreateKeyspaceFails(); |
| |
| // test excluded users |
| testExcludedUsers(this::createKeyspaceQuery, |
| this::createKeyspaceQuery, |
| this::createKeyspaceQuery); |
| } |
| |
| private void dropKeyspace(String keyspaceName) |
| { |
| schemaChange(format("DROP KEYSPACE %s", keyspaceName)); |
| } |
| |
| private String assertCreateKeyspaceValid() throws Throwable |
| { |
| String keyspaceName = createKeyspaceName(); |
| assertMaxThresholdValid(createKeyspaceQuery(keyspaceName)); |
| return keyspaceName; |
| } |
| |
| private String assertCreateKeyspaceWarns() throws Throwable |
| { |
| String keyspaceName = createKeyspaceName(); |
| assertThresholdWarns(createKeyspaceQuery(keyspaceName), |
| format("Creating keyspace %s, current number of keyspaces %d exceeds warning threshold of %d", |
| keyspaceName, currentValue() + 1, WARN_THRESHOLD) |
| ); |
| return keyspaceName; |
| } |
| |
| private void assertCreateKeyspaceFails() throws Throwable |
| { |
| String keyspaceName = createKeyspaceName(); |
| assertThresholdFails(createKeyspaceQuery(keyspaceName), |
| format("Cannot have more than %d keyspaces, aborting the creation of keyspace %s", |
| FAIL_THRESHOLD, keyspaceName) |
| ); |
| } |
| |
| private String createKeyspaceQuery() |
| { |
| return createKeyspaceQuery(createKeyspaceName()); |
| } |
| |
| private String createKeyspaceQuery(String keyspaceName) |
| { |
| return format("CREATE KEYSPACE %s WITH replication={ 'class' : 'SimpleStrategy', 'replication_factor' : 1 }", |
| keyspaceName); |
| } |
| } |