| /* |
| * 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.virtual; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import com.google.common.collect.ImmutableList; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import com.codahale.metrics.Histogram; |
| import com.codahale.metrics.Snapshot; |
| import com.datastax.driver.core.ResultSet; |
| import org.apache.cassandra.cql3.CQLTester; |
| import org.apache.cassandra.cql3.statements.BatchStatement; |
| import org.apache.cassandra.metrics.BatchMetrics; |
| |
| import static java.lang.String.format; |
| import static org.junit.Assert.assertEquals; |
| |
| public class BatchMetricsTableTest extends CQLTester |
| { |
| private static final String KS_NAME = "vts"; |
| |
| @BeforeClass |
| public static void setUpClass() |
| { |
| CQLTester.setUpClass(); |
| } |
| |
| @Before |
| public void config() |
| { |
| BatchMetricsTable table = new BatchMetricsTable(KS_NAME); |
| VirtualKeyspaceRegistry.instance.register(new VirtualKeyspace(KS_NAME, ImmutableList.of(table))); |
| } |
| |
| @Test |
| public void testSelectAll() throws Throwable |
| { |
| BatchMetrics metrics = BatchStatement.metrics; |
| |
| for (int i = 0; i < 10; i++) |
| { |
| metrics.partitionsPerLoggedBatch.update(i); |
| metrics.partitionsPerUnloggedBatch.update(i + 10); |
| metrics.partitionsPerCounterBatch.update(i * 10); |
| } |
| |
| ResultSet result = executeNet(format("SELECT * FROM %s.batch_metrics", KS_NAME)); |
| assertEquals(5, result.getColumnDefinitions().size()); |
| AtomicInteger rowCount = new AtomicInteger(0); |
| result.forEach(r -> { |
| Snapshot snapshot = getExpectedHistogram(metrics, r.getString("name")).getSnapshot(); |
| assertEquals(snapshot.getMedian(), r.getDouble("p50th"), 0.0); |
| assertEquals(snapshot.get99thPercentile(), r.getDouble("p99th"), 0.0); |
| rowCount.addAndGet(1); |
| }); |
| |
| assertEquals(3, rowCount.get()); |
| } |
| |
| private Histogram getExpectedHistogram(BatchMetrics metrics, String name) |
| { |
| if ("partitions_per_logged_batch".equals(name)) |
| return metrics.partitionsPerLoggedBatch; |
| |
| if ("partitions_per_unlogged_batch".equals(name)) |
| return metrics.partitionsPerUnloggedBatch; |
| |
| return metrics.partitionsPerCounterBatch; |
| } |
| } |