/**
* Check the autoCommit and Transaction Isolation levels of the DataSource.
*
* <p>If autoCommit is true this could be a real problem.
*
* <p>If the Isolation level is not READ_COMMITED then optimistic concurrency checking may not
* work as expected.
*/
private boolean checkDataSource(ServerConfig serverConfig) {
if (serverConfig.getDataSource() == null) {
if (serverConfig.getDataSourceConfig().isOffline()) {
// this is ok - offline DDL generation etc
return false;
}
throw new RuntimeException("DataSource not set?");
}
Connection c = null;
try {
c = serverConfig.getDataSource().getConnection();
if (c.getAutoCommit()) {
String m = "DataSource [" + serverConfig.getName() + "] has autoCommit defaulting to true!";
logger.warning(m);
}
return true;
} catch (SQLException ex) {
throw new PersistenceException(ex);
} finally {
if (c != null) {
try {
c.close();
} catch (SQLException ex) {
logger.log(Level.SEVERE, null, ex);
}
}
}
}
private SpiBackgroundExecutor createBackgroundExecutor(
ServerConfig serverConfig, int uniqueServerId) {
String namePrefix = "Ebean-" + serverConfig.getName();
// the size of the pool for executing periodic tasks (such as cache
// flushing)
int schedulePoolSize = GlobalProperties.getInt("backgroundExecutor.schedulePoolsize", 1);
// the side of the main pool for immediate background task execution
int minPoolSize = GlobalProperties.getInt("backgroundExecutor.minPoolSize", 1);
int poolSize = GlobalProperties.getInt("backgroundExecutor.poolsize", 20);
int maxPoolSize = GlobalProperties.getInt("backgroundExecutor.maxPoolSize", poolSize);
int idleSecs = GlobalProperties.getInt("backgroundExecutor.idlesecs", 60);
int shutdownSecs = GlobalProperties.getInt("backgroundExecutor.shutdownSecs", 30);
boolean useTrad = GlobalProperties.getBoolean("backgroundExecutor.traditional", true);
if (useTrad) {
// this pool will use Idle seconds between min and max so I think it is
// better
// as it will let the thread count float between the min and max
ThreadPool pool = ThreadPoolManager.getThreadPool(namePrefix);
pool.setMinSize(minPoolSize);
pool.setMaxSize(maxPoolSize);
pool.setMaxIdleTime(idleSecs * 1000);
return new TraditionalBackgroundExecutor(pool, schedulePoolSize, shutdownSecs, namePrefix);
} else {
return new DefaultBackgroundExecutor(
poolSize, schedulePoolSize, idleSecs, shutdownSecs, namePrefix);
}
}
/** Set the DatabasePlatform if it has not already been set. */
private void setDatabasePlatform(ServerConfig config) {
DatabasePlatform dbPlatform = config.getDatabasePlatform();
if (dbPlatform == null) {
DatabasePlatformFactory factory = new DatabasePlatformFactory();
DatabasePlatform db = factory.create(config);
config.setDatabasePlatform(db);
logger.info("DatabasePlatform name:" + config.getName() + " platform:" + db.getName());
}
}
private DataSource getDataSourceFromConfig(ServerConfig config) {
DataSource ds = null;
if (config.getDataSourceJndiName() != null) {
ds = jndiDataSourceFactory.lookup(config.getDataSourceJndiName());
if (ds == null) {
String m =
"JNDI lookup for DataSource " + config.getDataSourceJndiName() + " returned null.";
throw new PersistenceException(m);
} else {
return ds;
}
}
DataSourceConfig dsConfig = config.getDataSourceConfig();
if (dsConfig == null) {
String m = "No DataSourceConfig definded for " + config.getName();
throw new PersistenceException(m);
}
if (dsConfig.isOffline()) {
if (config.getDatabasePlatformName() == null) {
String m = "You MUST specify a DatabasePlatformName on ServerConfig when offline";
throw new PersistenceException(m);
}
return null;
}
if (dsConfig.getHeartbeatSql() == null) {
// use default heartbeatSql from the DatabasePlatform
String heartbeatSql = getHeartbeatSql(dsConfig.getDriver());
dsConfig.setHeartbeatSql(heartbeatSql);
}
return DataSourceGlobalManager.getDataSource(config.getName(), dsConfig);
}
/** Create using the ServerConfig object to configure the server. */
public static EbeanServer create(ServerConfig config) {
if (config.getName() == null) {
throw new PersistenceException("The name is null (it is required)");
}
EbeanServer server = serverFactory.createServer(config);
if (config.isDefaultServer()) {
GlobalProperties.setSkipPrimaryServer(true);
}
if (config.isRegister()) {
Ebean.register(server, config.isDefaultServer());
}
return server;
}
