nova/Chatto
1
0
Fork 0
Code Issues 7 Pull Requests Releases Wiki Activity

db init service now uses hibernate connection instead of separate connection. Also, user sessions are now reset using jdbc as well

Browse Source
This commit is contained in:
Rohan Sircar 2019-11-21 23:24:15 +05:30
parent bee90dcef0
commit 0ecfda9980
1 changed files with 68 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
chatto/src/main/java/org/ros/chatto/service/DBInitializerService.java
View File

@ -12,6 +12,11 @@ import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.stream.Collectors; import java.util.stream.Collectors;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.Transactional;
import org.hibernate.Session;
import org.ros.chatto.model.ApplicationStatus; import org.ros.chatto.model.ApplicationStatus;
import org.ros.chatto.model.UserSession; import org.ros.chatto.model.UserSession;
import org.ros.chatto.repository.UserSessionRepository; import org.ros.chatto.repository.UserSessionRepository;
@ -57,6 +62,8 @@ public class DBInitializerService {
private final Logger logger = LoggerFactory.getLogger(DBInitializerService.class); private final Logger logger = LoggerFactory.getLogger(DBInitializerService.class);
@PersistenceContext
private EntityManager entityManager;
public void connectDB() throws SQLException { public void connectDB() throws SQLException {
connection = DriverManager.getConnection(url, userName, password); connection = DriverManager.getConnection(url, userName, password);
@ -77,26 +84,67 @@ public class DBInitializerService {
return numTables; return numTables;
} }
public int getNumTables(Connection connection) throws SQLException {
PreparedStatement preparedStatement = connection.prepareStatement(numTablesQuery);
// preparedStatement.get
preparedStatement.setString(1, dbName);
ResultSet resultSet = preparedStatement.executeQuery();
// while(resultSet.next())
// {
// System.out.println(resultSet.get);
// }
resultSet.next();
int numTables = resultSet.getInt("num_tables");
// System.out.println(numTables);
return numTables;
}
@EventListener(ApplicationReadyEvent.class) @EventListener(ApplicationReadyEvent.class)
@Transactional
public void doSomethingAfterStartup() throws SQLException, IOException { public void doSomethingAfterStartup() throws SQLException, IOException {
// setProperties(); // setProperties();
connectDB(); // connectDB();
logger.info("Application Started - running initializer service"); logger.info("Application Started - running initializer service");
// System.out.println("Checking database and application state"); // System.out.println("Checking database and application state");
//
if (getNumTables() == 0) { Session session = entityManager.unwrap(Session.class);
session.doWork(connection -> {
if (getNumTables(connection) == 0) {
logger.info("Database is empty. Populating tables and roles"); logger.info("Database is empty. Populating tables and roles");
populateDB(); try {
populateDB(connection);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} }
closeConnection(); }
});
// if (getNumTables() == 0) {
// logger.info("Database is empty. Populating tables and roles");
// populateDB();
// }
// closeConnection();
session.doWork(connection -> {
resetAllUserSessions(connection);
});
resetAllUserSessions(userSessionRepository.findAll()); resetAllUserSessions(userSessionRepository.findAll());
} }
public void populateDB() throws SQLException, IOException { private void populateDB() throws SQLException, IOException {
ScriptUtils.executeSqlScript(connection,
new EncodedResource(new ClassPathResource("scheme.sql"), StandardCharsets.UTF_8));
ScriptUtils.executeSqlScript(connection,
new EncodedResource(new ClassPathResource("datae.sql"), StandardCharsets.UTF_8));
}
private void populateDB(Connection connection) throws SQLException, IOException {
ScriptUtils.executeSqlScript(connection, ScriptUtils.executeSqlScript(connection,
new EncodedResource(new ClassPathResource("scheme.sql"), StandardCharsets.UTF_8)); new EncodedResource(new ClassPathResource("scheme.sql"), StandardCharsets.UTF_8));
ScriptUtils.executeSqlScript(connection, ScriptUtils.executeSqlScript(connection,
@ -114,7 +162,6 @@ public class DBInitializerService {
new EncodedResource(new ClassPathResource("datae.sql"), StandardCharsets.UTF_8)); new EncodedResource(new ClassPathResource("datae.sql"), StandardCharsets.UTF_8));
} }
Map<String, Boolean> listToMap(List<ApplicationStatus> applicationStatusList) { Map<String, Boolean> listToMap(List<ApplicationStatus> applicationStatusList) {
Map<String, Boolean> statusMap = new HashMap<>(); Map<String, Boolean> statusMap = new HashMap<>();
for (ApplicationStatus applicationStatus : applicationStatusList) { for (ApplicationStatus applicationStatus : applicationStatusList) {
@ -136,4 +183,13 @@ public class DBInitializerService {
userSessionRepository.saveAll(userSessionsResetList); userSessionRepository.saveAll(userSessionsResetList);
} }
private void resetAllUserSessions(Connection connection) throws SQLException
{
String sql = "update user_sessions set online=0, num_sessions=0";
PreparedStatement preparedStatement = connection.prepareStatement(sql);
preparedStatement.executeUpdate();
}
} }