I am trying to migrate my application from spring boot 2.2.6 to 2.3.6. This update also updates the spring-data-couchbase 3.2.6 to 4.0.2. Earlier version was throwing OptimisticLockingFailureException but with this upgrade the exception is never thrown. I am using the debugger to stop the execution just before persisting, then changing the data manually in couchbase UI and continue the execution. Exception is thrown in spring-data-couchbase 3.2.6 but not in 4.0.2
spring-data-couchbase 3.2.6
CouchbaseConfiguration.java
#Configuration
#EnableCouchbaseRepositories
public class CouchbaseConfiguration extends AbstractCouchbaseConfiguration {
#Value("${couchbase.cluster.bucketName}")
private String bucketName;
#Value("${couchbase.cluster.ip}")
private String ip;
#Value("${couchbase.cluster.password}")
private String password;
#Override
protected String getBucketName() {
return bucketName;
}
#Override
protected String getBucketPassword() {
return this.password;
}
#Override
protected List<String> getBootstrapHosts() {
return Arrays.asList(ip);
}
#Bean(name = BeanNames.COUCHBASE_TEMPLATE)
#Override
public CouchbaseTemplate couchbaseTemplate() throws Exception {
final CouchbaseTemplate template = super.couchbaseTemplate();
template.setWriteResultChecking(WriteResultChecking.EXCEPTION);
return template;
}
#Override
protected Consistency getDefaultConsistency() {
return Consistency.READ_YOUR_OWN_WRITES;
}
PersistenceSnippet.java
entity = repository.findById(id)
try {
return Optional.of(repository.save(entity)); // stop execution here in debugger
} catch (OptimisticLockingFailureException e) {
log.warn("failed to persist optimistically");
return Optional.empty();
}
spring-data-couchbase 4.0.2
CouchbaseConfiguration.java
#Configuration
#EnableCouchbaseRepositories
public class CouchbaseConfiguration extends AbstractCouchbaseConfiguration {
#Value("${couchbase.cluster.bucketName}")
private String bucketName;
#Value("${couchbase.cluster.ip}")
private String ip;
#Value("${couchbase.cluster.password}")
private String password;
#Value("${couchbase.durability:lenient}")
private String durability;
#Override
public String getConnectionString() {
return ip;
}
#Override
public String getUserName() {
return bucketName;
}
#Override
public String getPassword() {
return password;
}
#Override
public String getBucketName() {
return bucketName;
}
Is it because of the difference of template.setWriteResultChecking(WriteResultChecking.EXCEPTION);? But couchbase template in 4.0.2 does not have any such method. Is there any configuration I am missing in 4.0.2 to be able to throw OptimisicLockingFailureExpception? My Entity object has #Version long version; and #Document annotations
Related
I tried to create tables in cassandra db on start-up of spring boot application but it doesn't seem to be able to create tables. Below is my configuration. I have the #EnableCassandraRepositories in my Application class. I already created my keyspace by default. So its just the tables that I'm looking to create.
Configuration
#Configuration
public class CassandraConfig extends AbstractCassandraConfiguration {
#Value("${cassandra.contactpoints}")
private String contactPoints;
#Value("${cassandra.port}")
private int port;
#Value("${cassandra.keyspace}")
private String keySpace;
#Value("${cassandra.basePackages}")
private String basePackages;
#Autowired
private Environment environment;
#Override
protected String getKeyspaceName() {
return keySpace;
}
#Override
#Bean
public CassandraClusterFactoryBean cluster() {
final CassandraClusterFactoryBean cluster = new CassandraClusterFactoryBean();
cluster.setContactPoints(contactPoints);
cluster.setPort(port);
return cluster;
}
#Override
#Bean
public CassandraMappingContext cassandraMapping() throws ClassNotFoundException {
return new BasicCassandraMappingContext();
}
}
Entity
#Table
#Getter
#Setter
#NoArgsConstructor
#AllArgsConstructor
public class AssessmentAttemptDetailsEntity implements Serializable {
#PrimaryKeyColumn(type = PrimaryKeyType.PARTITIONED)
private String assessmentId;
#PrimaryKeyColumn(type = PrimaryKeyType.CLUSTERED)
private String attempid;
}
Application
#SpringBootApplication
#ComponentScan(basePackages = {"com.lte.assessmentanalytics.service","com.lte.assessmentanalytics.config", "com.lte.assessmentanalytics.model", "com.lte.assessmentanalytics.listener"})
#EnableCassandraRepositories("com.lte.assessmentanalytics.model")
public class AssessmentanalyticsApplication {
#Autowired
private AssessmentAttemptRepository assessmentAttemptRepository;
public static void main(String[] args) {
SpringApplication.run(AssessmentanalyticsApplication.class, args);
}
}
Repository
#Repository
public interface AssessmentAttemptRepository extends CassandraRepository<AssessmentAttemptDetailsEntity, Long> {
}
I was able to fix this by modifying my CassandraConfig class to.
#Configuration
#EnableCassandraRepositories("com.lte.assessmentanalytics.model")
public class CassandraConfig extends AbstractCassandraConfiguration {
#Value("${cassandra.contactpoints}")
private String contactPoints;
#Value("${cassandra.port}")
private int port;
#Value("${cassandra.keyspace}")
private String keySpace;
#Value("${cassandra.basePackages}")
private String basePackages;
#Override
protected String getKeyspaceName() {
return keySpace;
}
#Override
protected String getContactPoints() {
return contactPoints;
}
#Override
protected int getPort() {
return port;
}
#Override
public SchemaAction getSchemaAction() {
return SchemaAction.CREATE_IF_NOT_EXISTS;
}
#Override
public String[] getEntityBasePackages() {
return new String[] {basePackages};
}
}
When trying to implement a DistributedCommandBus using Spring Cloud, I am getting the following error intermittently. I have reason to believe that there is some sort of race condition happening with the auto-configuration of my aggregate root class, its command handlers, and my configuration bean class.
org.axonframework.commandhandling.NoHandlerForCommandException: No
node known to accept.
I am using Axon Version 3.3.5.
Here is my configurations class:
#Configuration
#AutoConfigureBefore(CustomerAggregate.class)
public class AxonConfig {
#Value("${mongo.servers}")
private String mongoUrl;
#Value("${mongo.db}")
private String mongoDbName;
#Value("${axon.events.collection.name}")
private String eventsCollectionName;
#Value("${axon.snapshot.collection.name}")
private String snapshotCollectionName;
#Value("${axon.saga.collection.name}")
private String sagaCollectionName;
#Bean
#Primary
public CommandGateway commandGateway(#Qualifier("distributedBus") DistributedCommandBus commandBus) throws Exception {
return new DefaultCommandGateway(commandBus, new IntervalRetryScheduler(Executors.newSingleThreadScheduledExecutor(), 1000, 10));
}
#Bean
#Primary
#Qualifier("springCloudRouter")
public CommandRouter springCloudCommandRouter(DiscoveryClient client, Registration localServiceInstance) {
return new SpringCloudCommandRouter(client, localServiceInstance, new AnnotationRoutingStrategy());
}
#Bean
#Primary
#Qualifier("springCloudConnector")
public SpringHttpCommandBusConnector connector() {
return new SpringHttpCommandBusConnector(new SimpleCommandBus(), new RestTemplate(), new JacksonSerializer());
}
#Bean
#Primary
#Qualifier("distributedBus")
public DistributedCommandBus springCloudDistributedCommandBus(#Qualifier("springCloudRouter") CommandRouter router) {
return new DistributedCommandBus(router, connector());
}
#Bean
#Primary
public AggregateFactory<CustomerAggregate> aggregateFactory(){
return new GenericAggregateFactory<CustomerAggregate>(CustomerAggregate.class);
}
#Bean
#Primary
public EventCountSnapshotTriggerDefinition countSnapshotTriggerDefinition(){
return new EventCountSnapshotTriggerDefinition(snapShotter(), 3);
}
#Bean
#Primary
public Snapshotter snapShotter(){
return new AggregateSnapshotter(eventStore(), aggregateFactory());
}
#Bean
#Primary
public EventSourcingRepository<CustomerAggregate> customerAggregateRepository(){
return new EventSourcingRepository<>(aggregateFactory(), eventStore(), countSnapshotTriggerDefinition());
}
#Bean(name = "axonMongoTemplate")
public MongoTemplate axonMongoTemplate() {
return new DefaultMongoTemplate(mongoClient(), mongoDbName)
.withDomainEventsCollection(eventsCollectionName)
.withSnapshotCollection(snapshotCollectionName)
.withSagasCollection(sagaCollectionName);
}
#Bean
public MongoClient mongoClient() {
MongoFactory mongoFactory = new MongoFactory();
mongoFactory.setMongoAddresses(Arrays.asList(new ServerAddress(mongoUrl)));
return mongoFactory.createMongo();
}
#Bean
#Primary
public MongoEventStorageEngine engine() {
return new MongoEventStorageEngine(new JacksonSerializer(), null, axonMongoTemplate(), new DocumentPerEventStorageStrategy());
}
#Bean
#Primary
public EventStore eventStore() {
return new EmbeddedEventStore(engine());
}
}
And here is my aggregate class with command handlers:
#Aggregate(repository = "customerAggregateRepository")
public class CustomerAggregate {
Logger logger = LoggerFactory.getLogger(this.getClass());
#AggregateIdentifier
private String id;
private String firstName;
private String lastName;
private String email;
private CustomerAggregate() {}
public String getId() {
return id;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getEmail() {
return email;
}
#CommandHandler
public CustomerAggregate(CreateCustomer cmd) {
logger.debug("Received creation command: " + cmd.toString());
apply(new CustomerCreated(cmd.getId(),cmd.getFirstName(),cmd.getLastName(), cmd.getEmail()));
}
#CommandHandler
public void on(UpdateCustomer cmd) {
logger.debug("Received update command: " + cmd.toString());
apply(new CustomerUpdated(this.id,cmd.getFirstName(),cmd.getLastName(), cmd.getEmail()));
}
#CommandHandler
public void on(UpdateCustomerEmail cmd) {
logger.debug("Received update command for existing customer: " + cmd.toString());
apply(new CustomerUpdated(cmd.getId(), this.firstName, this.lastName, cmd.getEmail()));
}
// Various event handlers...
}
Any help is much appreciated.
I would like to retrieve the value of a property in file application.properties in my service layer of my application, the value of setVersion is null
version=5.4.3
and the function for recovery the version
#Override
public ProductDto getVersionApp() {
ProductDto dto = new ProductDto();
Properties prop = new Properties();
try {
prop.load(new FileInputStream("/concerto-rest-api/src/main/resources/application.properties"));
dto.setVersion(prop.getProperty("version"));
LOG.info("version ",prop.getProperty("version"));
} catch (IOException ex) {}
return dto;
}
You can use #Value("${version}") in you service, provided you service is a spring bean.
If you are using the spring-boot framework, there are several ways you can get that property.
First:
#SpringBootApplication
public class SpringBoot01Application {
public static void main(String[] args) {
ConfigurableApplicationContext context=SpringApplication.run(SpringBoot01Application.class, args);
String str1=context.getEnvironment().getProperty("version");
System.out.println(str1);
}
}
Second:
#Component
public class Student {
#Autowired
private Environment env;
public void speak() {
System.out.println("=========>" + env.getProperty("version"));
}
}
Third:
#Component
#PropertySource("classpath:jdbc.properties")//if is application.properties，then you don't need to write #PropertyScource("application.properties")
public class Jdbc {
#Value("${jdbc.user}")
private String user;
#Value("${jdbc.password}")
private String password;
public void speack(){
System.out.println("username:"+user+"------"+"password:"+password);
}
}
I created a small example project to show two problems I'm experiencing in the configuration of Spring Boot validation and its integration with Hibernate.
I already tried other replies I found about the topic but unfortunately they didn't work for me or that asked to disable Hibernate validation.
I want use a custom Validator implementing ConstraintValidator<ValidUser, User> and inject in it my UserRepository.
At the same time I want to keep the default behaviour of Hibernate that checks for validation errors during update/persist.
I write here for completeness main sections of the app.
Custom configuration
In this class I set a custom validator with a custom MessageSource, so Spring will read messages from the file resources/messages.properties
#Configuration
public class CustomConfiguration {
#Bean
public MessageSource messageSource() {
ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
messageSource.setBasenames("classpath:/messages");
messageSource.setUseCodeAsDefaultMessage(false);
messageSource.setCacheSeconds((int) TimeUnit.HOURS.toSeconds(1));
messageSource.setFallbackToSystemLocale(false);
return messageSource;
}
#Bean
public LocalValidatorFactoryBean validator() {
LocalValidatorFactoryBean factoryBean = new LocalValidatorFactoryBean();
factoryBean.setValidationMessageSource(messageSource());
return factoryBean;
}
#Bean
public MethodValidationPostProcessor methodValidationPostProcessor() {
MethodValidationPostProcessor methodValidationPostProcessor = new MethodValidationPostProcessor();
methodValidationPostProcessor.setValidator(validator());
return methodValidationPostProcessor;
}
}
The bean
Nothing special here if not the custom validator #ValidUser
#ValidUser
#Entity
public class User extends AbstractPersistable<Long> {
private static final long serialVersionUID = 1119004705847418599L;
#NotBlank
#Column(nullable = false)
private String name;
/** CONTACT INFORMATION **/
#Pattern(regexp = "^\\+{1}[1-9]\\d{1,14}$")
private String landlinePhone;
#Pattern(regexp = "^\\+{1}[1-9]\\d{1,14}$")
private String mobilePhone;
#NotBlank
#Column(nullable = false, unique = true)
private String username;
#Email
private String email;
#JsonIgnore
private String password;
#Min(value = 0)
private BigDecimal cashFund = BigDecimal.ZERO;
public User() {
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getLandlinePhone() {
return landlinePhone;
}
public void setLandlinePhone(String landlinePhone) {
this.landlinePhone = landlinePhone;
}
public String getMobilePhone() {
return mobilePhone;
}
public void setMobilePhone(String mobilePhone) {
this.mobilePhone = mobilePhone;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public BigDecimal getCashFund() {
return cashFund;
}
public void setCashFund(BigDecimal cashFund) {
this.cashFund = cashFund;
}
}
Custom validator
Here is where I try to inject the repository. The repository is always null if not when I disable Hibernate validation.
public class UserValidator implements ConstraintValidator<ValidUser, User> {
private Logger log = LogManager.getLogger();
#Autowired
private UserRepository userRepository;
#Override
public void initialize(ValidUser constraintAnnotation) {
}
#Override
public boolean isValid(User value, ConstraintValidatorContext context) {
try {
User foundUser = userRepository.findByUsername(value.getUsername());
if (foundUser != null && foundUser.getId() != value.getId()) {
context.disableDefaultConstraintViolation();
context.buildConstraintViolationWithTemplate("{ValidUser.unique.username}").addConstraintViolation();
return false;
}
} catch (Exception e) {
log.error("", e);
return false;
}
return true;
}
}
messages.properties
#CUSTOM VALIDATORS
ValidUser.message = I dati inseriti non sono validi. Verificare nuovamente e ripetere l'operazione.
ValidUser.unique.username = L'username [${validatedValue.getUsername()}] è già stato utilizzato. Sceglierne un altro e ripetere l'operazione.
#DEFAULT VALIDATORS
org.hibernate.validator.constraints.NotBlank.message = Il campo non può essere vuoto
# === USER ===
Pattern.user.landlinePhone = Il numero di telefono non è valido. Dovrebbe essere nel formato E.123 internazionale (https://en.wikipedia.org/wiki/E.123)
In my tests, you can try from the source code, I've two problems:
The injected repository inside UserValidator is null if I don't disable Hibernate validation (spring.jpa.properties.javax.persistence.validation.mode=none)
Even if I disable Hibernate validator, my test cases fail because something prevent Spring to use the default string interpolation for validation messages that should be something like [Constraint].[class name lowercase].[propertyName]. I don't want to use the constraint annotation with the value element like this #NotBlank(message="{mycustom.message}") because I don't see the point considering that has his own convetion for interpolation and I can take advantage of that...that means less coding.
I attach the code; you can just run Junit tests and see errors (Hibernate validation is enable, check application.properties).
What am I doing wrong? What could I do to solve those two problems?
====== UPDATE ======
Just to clarify, reading Spring validation documentation https://docs.spring.io/spring/docs/current/spring-framework-reference/core.html#validation-beanvalidation-spring-constraints they say:
By default, the LocalValidatorFactoryBean configures a SpringConstraintValidatorFactory that uses Spring to create ConstraintValidator instances. This allows your custom ConstraintValidators to benefit from dependency injection like any other Spring bean.
As you can see, a ConstraintValidator implementation may have its dependencies #Autowired like any other Spring bean.
In my configuration class I created my LocalValidatorFactoryBean as they write.
Another interesting questions are this and this, but I had not luck with them.
====== UPDATE 2 ======
After a lot of reseach, seems with Hibernate validator the injection is not provided.
I found a couple of way you can do that:
1st way
Create this configuration class:
#Configuration
public class HibernateValidationConfiguration extends HibernateJpaAutoConfiguration {
public HibernateValidationConfiguration(DataSource dataSource, JpaProperties jpaProperties,
ObjectProvider<JtaTransactionManager> jtaTransactionManager,
ObjectProvider<TransactionManagerCustomizers> transactionManagerCustomizers) {
super(dataSource, jpaProperties, jtaTransactionManager, transactionManagerCustomizers);
}
#Autowired
private Validator validator;
#Override
protected void customizeVendorProperties(Map<String, Object> vendorProperties) {
super.customizeVendorProperties(vendorProperties);
vendorProperties.put("javax.persistence.validation.factory", validator);
}
}
2nd way
Create an utility bean
#Service
public class BeanUtil implements ApplicationContextAware {
private static ApplicationContext context;
#Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
context = applicationContext;
}
public static <T> T getBean(Class<T> beanClass) {
return context.getBean(beanClass);
}
}
and then in the validator initialization:
#Override
public void initialize(ValidUser constraintAnnotation) {
userRepository = BeanUtil.getBean(UserRepository.class);
em = BeanUtil.getBean(EntityManager.class);
}
very important
In both cases, in order to make the it works you have to "reset" the entity manager in this way:
#Override
public boolean isValid(User value, ConstraintValidatorContext context) {
try {
em.setFlushMode(FlushModeType.COMMIT);
//your code
} finally {
em.setFlushMode(FlushModeType.AUTO);
}
}
Anyway, I don't know if this is really a safe way. Probably it's not a good practice access to the persistence layer at all.
If you really need to use injection in your Validator try adding #Configurable annotation on it:
#Configurable(autowire = Autowire.BY_TYPE, dependencyCheck = true)
public class UserValidator implements ConstraintValidator<ValidUser, User> {
private Logger log = LogManager.getLogger();
#Autowired
private UserRepository userRepository;
// this initialize method wouldn't be needed if you use HV 6.0 as it has a default implementation now
#Override
public void initialize(ValidUser constraintAnnotation) {
}
#Override
public boolean isValid(User value, ConstraintValidatorContext context) {
try {
User foundUser = userRepository.findByUsername( value.getUsername() );
if ( foundUser != null && foundUser.getId() != value.getId() ) {
context.disableDefaultConstraintViolation();
context.buildConstraintViolationWithTemplate( "{ValidUser.unique.username}" ).addConstraintViolation();
return false;
}
} catch (Exception e) {
log.error( "", e );
return false;
}
return true;
}
}
From the documentation to that annotation:
Marks a class as being eligible for Spring-driven configuration
So this should solve your null problem. To make it work though, you would need to configure AspectJ... (Check how to use #Configurable in Spring for that)
By default Togglz admin console runs on application port (configured by server.port property). I want to expose it on management.port. My question: is it possible?
If you use Togglz >= 2.4.0 then this feature is available out of the box.
For older releases solution is below:
I managed to expose a raw servlet on management.port by wrapping it with MvcEndpoint.
The easiest way to do it to use Spring Cloud module which does all the job for you (for example in the HystrixStreamEndpoint):
public class HystrixStreamEndpoint extends ServletWrappingEndpoint {
public HystrixStreamEndpoint() {
super(HystrixMetricsStreamServlet.class, "hystrixStream", "/hystrix.stream",
true, true);
}
}
In the case of TogglzConsoleServlet there is unfortunately one more hack to do with path's due to the way it extracts prefix from request URI, so the whole solution looks a little bit ugly:
#Component
class TogglzConsoleEndpoint implements MvcEndpoint {
private static final String ADMIN_CONSOLE_URL = "/togglz-console";
private final TogglzConsoleServlet togglzConsoleServlet;
#Autowired
TogglzConsoleEndpoint(final ServletContext servletContext) throws ServletException {
this.togglzConsoleServlet = new TogglzConsoleServlet();
togglzConsoleServlet.init(new DelegatingServletConfig(servletContext));
}
#Override
public String getPath() {
return ADMIN_CONSOLE_URL;
}
#Override
public boolean isSensitive() {
return true;
}
#Override
public Class<? extends Endpoint> getEndpointType() {
return null;
}
#RequestMapping("**")
public ModelAndView handle(HttpServletRequest request, HttpServletResponse response) throws Exception {
HttpServletRequestWrapper requestWrapper = new HttpServletRequestWrapper(request) {
#Override
public String getServletPath() {
return ADMIN_CONSOLE_URL;
}
};
togglzConsoleServlet.service(requestWrapper, response);
return null;
}
private class DelegatingServletConfig implements ServletConfig {
private final ServletContext servletContext;
DelegatingServletConfig(final ServletContext servletContext) {
this.servletContext = servletContext;
}
#Override
public String getServletName() {
return TogglzConsoleEndpoint.this.togglzConsoleServlet.getServletName();
}
#Override
public ServletContext getServletContext() {
return servletContext;
}
#Override
public String getInitParameter(final String name) {
return servletContext.getInitParameter(name);
}
#Override
public Enumeration<String> getInitParameterNames() {
return servletContext.getInitParameterNames();
}
}
}