| /* |
| * 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 WARRANTIESOR 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.aries.tx.control.itests; |
| |
| |
| import static java.util.stream.Collectors.toList; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.sql.ResultSet; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Stream; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.ops4j.pax.exam.junit.PaxExam; |
| import org.ops4j.pax.exam.spi.reactors.ExamReactorStrategy; |
| import org.ops4j.pax.exam.spi.reactors.PerClass; |
| import org.osgi.service.transaction.control.jdbc.JDBCConnectionProviderFactory; |
| |
| |
| @RunWith(PaxExam.class) |
| @ExamReactorStrategy(PerClass.class) |
| public class ConnectionRefreshTest extends AbstractTransactionTest { |
| |
| private static final String COUNT_CONNECTION_CHECKS = "Select EXECUTION_COUNT from INFORMATION_SCHEMA.QUERY_STATISTICS WHERE SQL_STATEMENT='Select COUNT(*) from TEST_TABLE'"; |
| |
| private static final String COUNT_SESSIONS = "Select COUNT(*) from INFORMATION_SCHEMA.SESSIONS"; |
| |
| private static final int CONNECTIONS = 5; |
| |
| @Override |
| protected Map<String, Object> resourceProviderConfig() { |
| Map<String, Object> config = new HashMap<>(); |
| |
| // Add a test query for the aries.connection.test.query property so that the test query will be |
| // used by the Hikari pooling library to test if a connection is okay as opposed to using the default |
| // Connection.isValid() method. |
| config.put("aries.connection.test.query", "Select COUNT(*) from TEST_TABLE"); |
| |
| config.put(JDBCConnectionProviderFactory.MAX_CONNECTIONS, CONNECTIONS); |
| config.put(JDBCConnectionProviderFactory.MIN_CONNECTIONS, CONNECTIONS); |
| return config; |
| } |
| |
| /** |
| * Test that setting the aries.connection.test.query property will indeed be used by the Hikari pooling |
| * library to test if a connection is okay as opposed to using the default Connection.isValid() method. |
| * |
| * @throws Exception |
| */ |
| @Test |
| public void testConnectionTestQuery() throws Exception { |
| |
| System.out.println("-------------- start testConnectionTestQuery -------------------------"); |
| |
| // Enable statistics gathering so that all connection checks will be logged |
| |
| txControl.required(() -> |
| connection.createStatement().executeUpdate("SET QUERY_STATISTICS TRUE")); |
| |
| // Wait a second so that the pool will re-check connection liveness the next time |
| // that we use one |
| |
| Thread.sleep(1000); |
| |
| // Spin up some threads to execute some queries to ensure all connections in the pool |
| // are checked for liveness |
| List<Thread> threads = Stream.generate(() -> new Thread(new ExecuteQuery())) |
| .limit(CONNECTIONS * 2) |
| .collect(toList()); |
| |
| threads.stream().forEach(Thread::start); |
| |
| System.out.println("testConnectionTestQuery() - Waiting while queries are run"); |
| threads.stream().forEach(t -> { |
| try { |
| t.join(5000); |
| } catch (InterruptedException ie) {} |
| assertFalse("The query did not complete in time", t.isAlive()); |
| }); |
| |
| // Run a query to check that there are the expected number of connections to the Db server |
| txControl.notSupported(() -> { |
| |
| // First check we saturated the pool |
| System.out.println("testConnectionTestQuery() - Execute query to get number of active connections"); |
| ResultSet rs = connection.createStatement().executeQuery(COUNT_SESSIONS); |
| |
| assertTrue(rs.next()); |
| |
| int numberOfConnections = rs.getInt(1); |
| assertNotNull(numberOfConnections); |
| assertEquals("Number of connections " + numberOfConnections, CONNECTIONS, numberOfConnections); |
| |
| // Now check that each connection was tested for liveness |
| rs = connection.createStatement().executeQuery(COUNT_CONNECTION_CHECKS); |
| |
| assertTrue(rs.next()); |
| |
| assertEquals("There should be a check for every connection", CONNECTIONS, rs.getInt(1)); |
| |
| return null; |
| |
| }); |
| |
| |
| System.out.println("-------------- end testConnectionTestQuery -------------------------"); |
| |
| } |
| |
| public class ExecuteQuery implements Runnable { |
| |
| public void run() { |
| |
| txControl.required(() -> { |
| |
| System.out.println(" ExecuteQuery - query to get number of active connections after Db server has restarted"); |
| ResultSet rs = connection.createStatement().executeQuery(COUNT_SESSIONS); |
| |
| if(rs.next()) { |
| |
| Integer numberOfConnections = rs.getInt(1); |
| System.out.println(" ExecuteQuery - numberOfConnections after starting Db server =<" + numberOfConnections + ">"); |
| |
| } |
| // A short sleep to ensure contention for connections |
| Thread.sleep(100); |
| |
| return null; |
| |
| }); |
| } |
| } |
| } |