synchronized DataSource ds() {
if (ds == null) {
String providerClass = config.getString("provider_class");
if (providerClass == null) {
providerClass = DEFAULT_PROVIDER_CLASS;
}
try {
Class clazz = getClassLoader().loadClass(providerClass);
provider = (DataSourceProvider) clazz.newInstance();
ds = provider.getDataSource(config);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
return ds;
}
synchronized void close() {
if (--refCount == 0) {
if (provider != null) {
vertx.executeBlocking(
future -> {
try {
provider.close(ds);
future.complete();
} catch (SQLException e) {
future.fail(e);
}
},
null);
}
if (exec != null) {
exec.shutdown();
}
if (closeRunner != null) {
closeRunner.run();
}
}
}