content: /*
   * 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.index.sai.metrics;
  
  import javax.management.InstanceNotFoundException;
  
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  
  import com.datastax.driver.core.ResultSet;
  
  import static org.apache.cassandra.index.sai.metrics.TableStateMetrics.TABLE_STATE_METRIC_TYPE;
  import static org.assertj.core.api.Assertions.assertThatThrownBy;
  import static org.junit.Assert.assertEquals;
  
  public class StateMetricsTest extends AbstractMetricsTest
  {
      private static final String CREATE_TABLE_TEMPLATE = "CREATE TABLE %s.%s (id1 TEXT PRIMARY KEY, v1 INT, v2 TEXT) WITH compaction = " +
                                                          "{'class' : 'SizeTieredCompactionStrategy', 'enabled' : false }";
      private static final String CREATE_INDEX_TEMPLATE = "CREATE CUSTOM INDEX IF NOT EXISTS %s ON %s.%s(%s) USING 'StorageAttachedIndex'";
  
      @Rule
      public ExpectedException exception = ExpectedException.none();
  
      @Test
      public void testMetricRelease() throws Throwable
      {
          String table = "test_metric_release";
          String index = "test_metric_release_index";
  
          String keyspace = createKeyspace(CREATE_KEYSPACE_TEMPLATE);
  
          createTable(String.format(CREATE_TABLE_TEMPLATE, keyspace, table));
          createIndex(String.format(CREATE_INDEX_TEMPLATE, index, keyspace, table, "v1"));
  
          execute("INSERT INTO " + keyspace + '.' + table + " (id1, v1, v2) VALUES ('0', 0, '0')");
  
          ResultSet rows = executeNet("SELECT id1 FROM " + keyspace + '.' + table + " WHERE v1 = 0");
          assertEquals(1, rows.all().size());
          assertEquals(1L, getTableStateMetrics(keyspace, table, "TotalIndexCount"));
  
          // If we drop the last index on the table, we should no longer see the table-level state metrics:
          dropIndex(String.format("DROP INDEX %s." + index, keyspace));
          assertThatThrownBy(() -> getTableStateMetrics(keyspace, table, "TotalIndexCount")).hasCauseInstanceOf(InstanceNotFoundException.class);
      }
  
      @Test
      public void testMetricCreation() throws Throwable
      {
          String table = "test_table";
          String index = "test_index";
  
          String keyspace = createKeyspace(CREATE_KEYSPACE_TEMPLATE);
          createTable(String.format(CREATE_TABLE_TEMPLATE, keyspace, table));
          createIndex(String.format(CREATE_INDEX_TEMPLATE, index + "_v1", keyspace, table, "v1"));
          createIndex(String.format(CREATE_INDEX_TEMPLATE, index + "_v2", keyspace, table, "v2"));
  
          execute("INSERT INTO " + keyspace + '.' + table + " (id1, v1, v2) VALUES ('0', 0, '0')");
          execute("INSERT INTO " + keyspace + '.' + table + " (id1, v1, v2) VALUES ('1', 1, '1')");
          execute("INSERT INTO " + keyspace + '.' + table + " (id1, v1, v2) VALUES ('2', 2, '2')");
          execute("INSERT INTO " + keyspace + '.' + table + " (id1, v1, v2) VALUES ('3', 3, '3')");
  
          ResultSet rows = executeNet("SELECT id1, v1, v2 FROM " + keyspace + '.' + table + " WHERE v1 >= 0");
  
          int actualRows = rows.all().size();
          assertEquals(4, actualRows);
  
          waitForEquals(objectNameNoIndex("TotalIndexCount", keyspace, table, TABLE_STATE_METRIC_TYPE), 2);
          waitForEquals(objectNameNoIndex("TotalQueryableIndexCount", keyspace, table, TABLE_STATE_METRIC_TYPE), 2);
      }
  
      private int getTableStateMetrics(String keyspace, String table, String metricsName)
      {
          return (int) getMetricValue(objectNameNoIndex(metricsName, keyspace, table, TABLE_STATE_METRIC_TYPE));
      }
  }
  