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[英]Multi-tenancy in Spring Boot + Hibernate5 - Schema per tenant
[英]Multi-tenancy using single database multiple schema with Hibernate and Spring Boot saving data to wrong schema
我正在嘗試使用數據為我的多租戶(單個數據庫、多個模式)系統播種,但遇到了一個問題,當我對單個數據庫使用相同的代碼時,該問題不存在。 我完全期望在我的研究過程中我錯過了一些明顯的東西。
每個模式都將包含完全相同的表結構。
這是我的租戶上下文
public class TenantContext {
public static final String DEFAULT_TENANT_IDENTIFIER = "public";
private static final ThreadLocal<String> TENANT_IDENTIFIER = new ThreadLocal<>();
public static void setTenant(String tenantIdentifier) {
TENANT_IDENTIFIER.set(tenantIdentifier);
}
public static void reset(String tenantIdentifier) {
TENANT_IDENTIFIER.remove();
}
@Component
public static class TenantIdentifierResolver implements CurrentTenantIdentifierResolver {
@Override
public String resolveCurrentTenantIdentifier() {
String currentTenantId = TENANT_IDENTIFIER.get();
return currentTenantId != null ?
currentTenantId :
DEFAULT_TENANT_IDENTIFIER;
}
@Override
public boolean validateExistingCurrentSessions() {
return false;
}
}
}
還有我的 HibernateConfig
@Configuration
public class HibernateConfig {
@Autowired
private JpaProperties jpaProperties;
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
return new HibernateJpaVendorAdapter();
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource,
MultiTenantConnectionProvider multiTenantConnectionProvider, CurrentTenantIdentifierResolver currentTenantIdentifierResolver) {
Map<String, Object> jpaPropertiesMap = new HashMap<>();
jpaPropertiesMap.putAll(jpaProperties.getProperties());
jpaPropertiesMap.put(Environment.MULTI_TENANT, MultiTenancyStrategy.SCHEMA);
jpaPropertiesMap.put(Environment.MULTI_TENANT_CONNECTION_PROVIDER, multiTenantConnectionProvider);
jpaPropertiesMap.put(Environment.MULTI_TENANT_IDENTIFIER_RESOLVER, TenantContext.TenantIdentifierResolver.class);
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource);
entityManagerFactoryBean.setPackagesToScan(UppStudentAppBeApplication.class.getPackage().getName());
entityManagerFactoryBean.setJpaVendorAdapter(jpaVendorAdapter());
entityManagerFactoryBean.setJpaPropertyMap(jpaPropertiesMap);
return entityManagerFactoryBean;
}
}
還有我的 TenantConenctionProvider
@Component
public class TenantConnectionProvider implements MultiTenantConnectionProvider {
private static Logger logger = LoggerFactory.getLogger(TenantConnectionProvider.class);
@Autowired
private DataSource dataSource;
public TenantConnectionProvider(DataSource dataSource) {
this.dataSource = dataSource;
}
@Override
public Connection getAnyConnection() throws SQLException {
return dataSource.getConnection();
}
@Override
public void releaseAnyConnection(Connection connection) throws SQLException {
connection.close();
}
@Override
public Connection getConnection(String tenantIdentifier) throws SQLException {
logger.info("Get connection for tenant " + String.join(":", tenantIdentifier ));
final Connection connection = getAnyConnection();
try {
//connection.createStatement().execute( String.format("SET SCHEMA \"%s\";", tenantIdentifier));
connection.setSchema(tenantIdentifier);
} catch ( SQLException e ) {
throw new HibernateException(
"Could not alter JDBC connection to specified schema [" +
tenantIdentifier + "]",
e
);
}
return connection;
}
@Override
public void releaseConnection(String tenantIdentifier, Connection connection) throws SQLException {
try {
//connection.createStatement().execute( String.format("SET SCHEMA \"%s\";", TenantContext.DEFAULT_TENANT_IDENTIFIER) );
connection.setSchema(TenantContext.DEFAULT_TENANT_IDENTIFIER);
} catch ( SQLException e ) {
throw new HibernateException(
"Could not alter JDBC connection to specified schema [" +
tenantIdentifier + "]",
e
);
}
releaseAnyConnection(connection);
}
@Override
public boolean supportsAggressiveRelease() {
return false;
}
@Override
public boolean isUnwrappableAs(Class unwrapType) {
return false;
}
@Override
public <T> T unwrap(Class<T> unwrapType) {
return null;
}
}
我將我的種子稱為 class,它使用 flyway 遷移構建了我的租戶和模式。
然后我嘗試遍歷保存的租戶切換 TenantContext。 當調試似乎起作用時。 但是,當我嘗試對 repo 做任何事情時,我收到以下錯誤。
ohengine.jdbc.spi.SqlExceptionHelper: 錯誤: 列 Campus0_.createdat 不存在
提示:也許您的意思是引用列“campus0_.created_at”。
Position:32
正如我之前所說,當它是單個數據庫和模式時,它以前工作得很好。 我不是 100% 確定我哪里出錯了。 我應該如何注冊模式? 如果是這樣,我如何在不重新部署的情況下加入新租戶? 我應該在這個階段使用使用 repo 中的模式的自定義查詢嗎?
提前感謝您的任何幫助或建議。
編輯 1所以我現在通過檢查 hibernate 屬性克服了我最初的障礙,因此通過如下更改 hibernate 配置
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource,
MultiTenantConnectionProvider multiTenantConnectionProvider,
HibernateProperties hibernateProperties) {
Map<String, Object> jpaPropertiesMap = hibernateProperties.determineHibernateProperties(jpaProperties.getProperties(), new HibernateSettings());
//jpaPropertiesMap.putAll(jpaProperties.getProperties());
jpaPropertiesMap.put(Environment.MULTI_TENANT, MultiTenancyStrategy.SCHEMA);
jpaPropertiesMap.put(Environment.MULTI_TENANT_CONNECTION_PROVIDER, multiTenantConnectionProvider);
jpaPropertiesMap.put(Environment.MULTI_TENANT_IDENTIFIER_RESOLVER, TenantContext.TenantIdentifierResolver.class);
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource);
entityManagerFactoryBean.setPackagesToScan(UppStudentAppBeApplication.class.getPackage().getName());
entityManagerFactoryBean.setJpaVendorAdapter(jpaVendorAdapter());
entityManagerFactoryBean.setJpaPropertyMap(jpaPropertiesMap);
return entityManagerFactoryBean;
}
這現在已經消除了上述命名錯誤。 但是現在它保存到我的默認架構而不是 TenantIdentifierResolver 中設置的架構。
你實現AsyncHandlerInterceptor
- Spring 的攔截器。 也應該在WebMvcConfigurer
中注冊。
@Component
public class TenantRequestInterceptor implements AsyncHandlerInterceptor{
private SecurityDomain securityDomain;
public TenantRequestInterceptor(SecurityDomain securityDomain) {
this.securityDomain = securityDomain;
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
return Optional.ofNullable(request)
.map(req -> securityDomain.getTenantIdFromJwt(req))
.map(tenant -> setTenantContext(tenant))
.orElse(false);
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
TenantContext.reset();
}
private boolean setTenantContext(String tenant) {
TenantContext.setCurrentTenant(tenant);
return true;
}
}
這很重要,因為在這里您使用租戶填充 TenantContext。 您是否調試過方法getConnection(String tenantIdentifier)
作為tenantIdentifier 的值是什么?
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