I've got problem with my state machine. After rerunnig my service, statemachine that restored is missing StateMachineInterceptor, that I added when was creating the statemachine instance for the first time.
Interceptor is important for me, because of some post processing after each transition, and listener looks not suitable for it (I need stateMachineInstance in default method)
All realated code located below:
public class StateMachineConfig extends EnumStateMachineConfigurerAdapter<S,E>{
#Override
public void configure(StateMachineConfigurationConfigurer<S, E> config) throws Exception {
config
.withPersistence()
.runtimePersister(stateMachinePersister);
config
.withConfiguration()
.autoStartup(false)
.listener(listener);
}
StateMachineService config:
#Configuration
#RequiredArgsConstructor
public class StateMachineServiceConfig {
private final StateMachineFactory<S, E> factory;
private final StateMachineRuntimePersister<S, E, String> stateMachinePersister;
#Bean
public StateMachineService<S, E> stateMachineService() {
return new DefaultStateMachineService<>(factory, stateMachinePersister);
}
}
My persister:
#Configuration
public class StateMachinePersistenceConfiguration {
#Bean
public StateMachineRuntimePersister<S, E, String> stateMachinePersister(
final JpaStateMachineRepository jpaStateMachineRepository) {
return new JpaPersistingStateMachineInterceptor<>(jpaStateMachineRepository);
}
}
I'm also a bit confused because it uses only state_machine table, other were created once and had no changes.
Class for creating and restoring stateMachines:
#Service
#RequiredArgsConstructor
#Slf4j
public class RelocationRequestsSSMService {
private final StateMachineService<S, E> stateMachineService;
private final MyInterceptor stateMachineInterceptor;
public StateMachine<S, E> createStateMachine() {
StateMachine<S, E> stateMachine = stateMachineService.acquireStateMachine(UUID.randomUuid());
stateMachine.getStateMachineAccessor().withRegion().addStateMachineInterceptor(stateMachineInterceptor);
log.debug("Created ssm with id: " + stateMachine.getId());
return stateMachine;
}
private StateMachine<S, E> getStateMachineBySsmId(String ssmId) {
log.debug("Request ssm from persister with id: " + ssmId);
StateMachine<S, E> stateMachine = stateMachineService.acquireStateMachine(ssmId);
log.debug("Get ssm from persister with id and uuid: " + stateMachine.getId() + " " + stateMachine.getUuid());
return stateMachine;
}
Maybe persister saves the statemachine instance incorrectly, so if I misconfigured it pls help
Thanks in advance!
Related
I need to bind several exchanges with several routing keys to one single queue and be able to send messages by exchange and routing key and receive it by listening to queue by queue-name.
my code:
#Configuration
#RequiredArgsConstructor
#EnableConfigurationProperties(ExchangeConfig.class)
public class RabbitConfig {
private final ExchangeConfig exchangeConfig;
#Bean
public List<Binding> bindings() {
List<Binding> bindings = new ArrayList<>();
exchangeConfig.getExchangesWithKeys()
.forEach(exchangeWithKeys -> exchangeWithKeys.getRoutingKeys()
.forEach(key -> {
Exchange exchange = ExchangeBuilder.directExchange(exchangeWithKeys.getExchange()).build();
Queue queue = QueueBuilder.durable(exchangeConfig.getLogsQueue()).build();
Binding binding = BindingBuilder.bind(queue).to(exchange)
.with(key).noargs();
bindings.add(binding);
}));
return bindings;
}
}
config:
spring:
rabbitmq:
host: localhost
port: 5672
rabbitmq:
exchanges-with-keys:
- exchange: exchange1
routing-keys: exchange1.live, exchange1.after
- exchange: exchange2
routing-keys: exchange2.live, exchange2.after
- exchange: exchange3
routing-keys: exchange3.live, exchange3.after
logs-queue: log-messages_q
props:
#Data
#Component
#ConfigurationProperties(prefix = "rabbitmq")
public class ExchangeConfig {
private String logsQueue;
private List<ExchangeWithKeys> exchangesWithKeys;
#Data
public static class ExchangeWithKeys {
private String exchange;
private List<String> routingKeys;
}
}
listener:
#Component
#Slf4j
#RequiredArgsConstructor
public class LogsListener {
private final LogMessageEventProcessor logMessageEventProcessor;
#RabbitListener(queues = "${rabbitmq.logs-queue}")
public void onLiveEvent(LogMessageEvent event) {
log.info("Received log event message [{}]", event.getBody());
logMessageEventProcessor.processLogMessageEvent(event);
}
}
test:
#SpringBootTest
#ContextConfiguration(initializers = LogsListenerTest.Initializer.class)
class LogsListenerTest {
#Autowired
private RabbitTemplate template;
#ClassRule
private static final RabbitMQContainer container = new RabbitMQContainer("rabbitmq:3.7.25-management-alpine")
.withExposedPorts(5672, 15672).withQueue("log-messages_q");
#BeforeAll
private static void startRabbit() {container.start();}
#AfterAll
private static void stopRabbit() {
container.stop();
}
#Test
public void test() {
template.convertAndSend("exchange1", "exchange1.live", new LogMessageEvent());
template.receiveAndConvert("log-messages_q");
}
public static class Initializer implements
ApplicationContextInitializer<ConfigurableApplicationContext> {
#Override
public void initialize(#NotNull ConfigurableApplicationContext configurableApplicationContext) {
val values = TestPropertyValues.of(
"spring.rabbitmq.host=" + container.getContainerIpAddress(),
"spring.rabbitmq.port=" + container.getMappedPort(5672)
);
values.applyTo(configurableApplicationContext);
}
}
}
Everything above does not working.
So where should i put these bindings to make it work? Thanks.
What version are you using? The use of List<Binding> has been replaced by Declarables.
See https://docs.spring.io/spring-amqp/docs/current/reference/html/#collection-declaration
The documentation is a bit out of date, the admin declareCollections property was removed in 2.2.
I have set the following property
server.servlet.session.timeout=30s
in my application properties but the session time out is not triggerd.
but after setting
server.servlet.session.cookie.max-age=30s
the session time out got trigger but following code for updating logout time is not getting triggerd.
#Component
public class LogoutListener implements ApplicationListener<SessionDestroyedEvent> {
#Override
public void onApplicationEvent(SessionDestroyedEvent event)
{
List<SecurityContext> lstSecurityContext = event.getSecurityContexts();
UserDetails ud;
for (SecurityContext securityContext : lstSecurityContext)
{
ud = (UserDetails) securityContext.getAuthentication().getPrincipal();
us.findAllUsersByEmail(ud.getUsername()).get(0).setLastLogout(LocalDateTime.now());
System.out.println("lastloginspec : " + ud.getUsername() + " : 00 : " + LocalDateTime.now());
}
}
}
#Bean
public ServletListenerRegistrationBean<HttpSessionEventPublisher> httpSessionEventPublisher() {
return new ServletListenerRegistrationBean<HttpSessionEventPublisher>(new HttpSessionEventPublisher());
}
Could any one Help me out ?
I have implemented the session listener by following way.
Create a custom http session listener.
#Component
public class CustomHttpSessionListener implements HttpSessionListener{
private static final Logger LOG= LoggerFactory.getLogger(Test.class);
#Override
public void sessionCreated(HttpSessionEvent se) {
LOG.info("New session is created.");
UserPrincipal principal = (UserPrincipal) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
}
#Override
public void sessionDestroyed(HttpSessionEvent se) {
LOG.info("Session destroyed.");
UserPrincipal principal = (UserPrincipal) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
}}
Invoke new ServletListenerRegistrationBean and add CustomHttpListener to it and annotate it as #Bean.
#Autowired private CustomHttpSessionListener customHttpSessionListener;
#Bean
public ServletListenerRegistrationBean<CustomSessionListner>sessionListenerWithMetrics() { ServletListenerRegistrationBean<CustomSessionListner>
listenerRegBean = new ServletListenerRegistrationBean<>();
listenerRegBean.setListener(customHttpSessionListener);
return listenerRegBean;
}
Adding a property to application.properties
server.servlet.session.timeout = 15m
This is not a full answer, but a step to isolate and troubleshoot. Replace your LogoutListener with and see when you start the application if it is printing any events. If it is not printing your issue is not specific SessionDestroyedEvent instead generic to your listener.
#Component
public class LogoutListener
implements ApplicationListener<ApplicationEvent> {
#Override
public void onApplicationEvent(ApplicationEvent event)
{
System.out.println("event caught at LogoutListener: " + event);
}
}
And also add this to application.properties to see if event is fired as it should log Publishing event:
logging.level.org.springframework.security.web.session.HttpSessionEventPublisher=DEBUG
I am getting "Couldn't find PersistentEntity for type class" error when I am using #EnableMongoAuditing features along with MongoRepository.
This happens when I save a document when collection isn't already present in database.
I tried whatever is mentioned in:
https://github.com/spring-projects/spring-boot/issues/12023
https://jira.spring.io/browse/DATAMONGO-1999
Spring boot mongodb auditing error
but nothing is working.
Mentioned things are:
Extend MongoConfig by AbstractMongoConfiguration and override all methods.
Here is my code which reproduced the same error:
MongoConfig class
#Configuration
public class MongoConfig extends AbstractMongoConfiguration {
#Value("${spring.data.mongodb.host}")
private String mongoHost;
#Value("${spring.data.mongodb.port}")
private String mongoPort;
#Value("${spring.data.mongodb.database}")
private String mongoDB;
#Override
public MongoDbFactory mongoDbFactory() {
return new SimpleMongoDbFactory(new MongoClient(mongoHost + ":" + mongoPort), mongoDB);
}
#Override
public MongoClient mongoClient() {
return new MongoClient(mongoHost, Integer.parseInt(mongoPort));
}
#Override
public MongoTemplate mongoTemplate() {
return new MongoTemplate(mongoDbFactory());
}
#Override
public MappingMongoConverter mappingMongoConverter() {
return new MappingMongoConverter(new DefaultDbRefResolver(mongoDbFactory()), new MongoMappingContext());
}
#Override
protected String getDatabaseName() {
return mongoDB;
}
}
Person Collection class
#Document
public class Person {
#Id
private String id;
private String name;
#CreatedDate
private LocalDateTime createdAt;
#LastModifiedDate
private LocalDateTime lastModified;
// Getter Setters Constructors omitted for brevity
}
Main Application class
#EnableMongoAuditing
#EnableMongoRepositories ({"com.example.*", "org.apache.*"})
#SpringBootApplication
#ComponentScan({"com.example.*", "org.apache.*"})
public class DemoApplication implements CommandLineRunner {
#Autowired
PersonRepository personRepository;
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
#Override
public void run(String... args) throws Exception {
Person p1 = new Person("1", "prakhar");
personRepository.save(p1);
}
}
Expected Result is Person entity should be saved in database.
Actual Result is "Couldn't find PersistentEntity for type class Person" error
Looks like you ran into https://github.com/spring-projects/spring-boot/issues/12023
Extending AbstractMongoConfiguration will switch off Spring Boot's auto-configuration of various Mongo components and also customises the base packages that are used to scan for mappings. I would recommend that you don't use it in Spring Boot.
Update
I managed to get the example running with the configuration as simple as
#Configuration
public class MongoConfig {
#Value("${spring.data.mongodb.host}")
private String mongoHost;
#Value("${spring.data.mongodb.port}")
private String mongoPort;
#Value("${spring.data.mongodb.database}")
private String mongoDB;
#Bean
public MongoDbFactory mongoDbFactory() {
return new SimpleMongoDbFactory(new MongoClient(mongoHost + ":" + mongoPort), mongoDB);
}
#Bean
public MongoClient mongoClient() {
return new MongoClient(mongoHost, Integer.parseInt(mongoPort));
}
}
and the app class
#EnableMongoAuditing
#SpringBootApplication
public class DemoApplication implements CommandLineRunner {
#Autowired
PersonRepository personRepository;
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
#Override
public void run(String... args) throws Exception {
Thread.sleep(2000);
Person p1 = new Person("1", "prakhar");
personRepository.save(p1);
}
}
Notice that I followed my own advice and did't inherit from AbstractMongoConfiguration
Explanation
The problem lies in the initialization of
#Bean
public MappingMongoConverter mappingMongoConverter() {
return new MappingMongoConverter(new DefaultDbRefResolver(mongoDbFactory()), new MongoMappingContext());
}
You simply call MongoMappingContext constructor, without calling setInitialEntitySet. Compare that with MongoDataConfiguration auto-configuration class.
#Bean
#ConditionalOnMissingBean
public MongoMappingContext mongoMappingContext(MongoCustomConversions conversions)
throws ClassNotFoundException {
MongoMappingContext context = new MongoMappingContext();
context.setInitialEntitySet(new EntityScanner(this.applicationContext)
.scan(Document.class, Persistent.class));
Class<?> strategyClass = this.properties.getFieldNamingStrategy();
if (strategyClass != null) {
context.setFieldNamingStrategy(
(FieldNamingStrategy) BeanUtils.instantiateClass(strategyClass));
}
context.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
return context;
}
Even worse, you don't register MongoMappingContext as a managed bean.
Due to this fact, auto-configuration class is still created. This leads to a race condition, I tried to run the original code and could easily reproduce the error, but with a breakpoint in AbstractMappingContext.addPersistentEntity the test always passed.
For me I resolved this issue by adding following method in MongoConfig if your class extends from AbstractMongoConfiguration
#Override
protected String getMappingBasePackage() {
return "com.companyName.modulename"
}
If MongoConfig extends from MongoConfigurationSupport then add below method
#Override
protected Collection<String> getMappingBasePackages() {
return Arrays.asList("com.companyName.module1","com.companyName.module2");
}
Note that in later case I can specify multiple package names as base packages.
I have spring component class annotated with #Component and in it I have field ConcurrentHashMap map, which is init in constructor of component and used in spring stream listener:
#Component
public class FooService {
private ConcurrentHashMap<Long, String> fooMap;
public FooService () {
fooMap = new ConcurrentHashMap<>();
}
#StreamListener(value = Sink.INPUT)
private void handler(Foo foo) {
fooMap.put(foo.id, foo.body);
}
}
Listener handle messages sent by rest controller. Can you tell me why I always got there fooMap.put(...) NullPointerException because fooMap is null and not initialzied.
EDIT:
After #OlegZhurakousky answer I find out problem is with async method. When I add #Async on some method and add #EnableAsync I can't anymore use private modificator for my #StreamListener method. Do you have idea why and how to fix it?
https://github.com/schwantner92/spring-cloud-stream-issue
Thanks.
Could you try using #PostConstruct instead of constructor?
#PostConstruct
public void init(){
this.fooMap = new ConcurrentHashMap<>();
}
#Denis Stephanov
When I say bare minimum, here is what I mean. So try this as a start, you'll see that the map is not null and start evolving your app from there.
#SpringBootApplication
#EnableBinding(Processor.class)
public class DemoApplication {
private final Map<String, String> map;
public static void main(String[] args) {
SpringApplication.run(DemoRabbit174Application.class, args);
}
public DemoApplication() {
this.map = new HashMap<>();
}
#StreamListener(Processor.INPUT)
public void sink(String string) {
System.out.println(string);
}
}
With Spring everything has to be injected.
You need to declare a #Bean for the ConcurrentHashMap, that will be injected in you Component. So create a Configuration class like:
#Configuration
public class FooMapConfiguration {
#Bean("myFooMap")
public ConcurrentHashMap<Long, String> myFooMap() {
return new ConcurrentHashMap<>();
}
}
Then modify your Component:
#Component
public class FooService {
#Autowired
#Qualifier("myFooMap")
private ConcurrentHashMap<Long, String> fooMap;
public FooService () {
}
#StreamListener(value = Sink.INPUT)
private void handler(Foo foo) {
fooMap.put(foo.id, foo.body); // <= No more NPE here
}
}
I have Spring converter which uses Spring Data REST's component called EnumTranslator
#Component
public class TranslationStringToSpecificationStatusEnumConverter implements Converter<String, Specification.Status> {
private final EnumTranslator enumTranslator;
#Autowired
public TranslationStringToSpecificationStatusEnumConverter(EnumTranslator enumTranslator) {
this.enumTranslator = enumTranslator;
}
#Override
public Specification.Status convert(String source) {
return enumTranslator.fromText(Specification.Status.class, source);
}
}
Recommended way to register such converter is to subclass RepositoryRestConfigurerAdapter as follows:
#Configuration
public class RepositoryRestConfig extends RepositoryRestConfigurerAdapter {
private final TranslationStringToSpecificationStatusEnumConverter converter;
#Autowired
public RepositoryRestConfig(TranslationStringToSpecificationStatusEnumConverter converter) {
this.converter = converter;
}
#Override
public void configureConversionService(ConfigurableConversionService conversionService) {
conversionService.addConverter(converter);
super.configureConversionService(conversionService);
}
}
When I run the Spring Boot application, it fails on the following:
***************************
APPLICATION FAILED TO START
***************************
Description:
The dependencies of some of the beans in the application context form a cycle:
┌─────┐
| translationStringToSpecificationStatusEnumConverter defined in file ...
↑ ↓
| org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration (field java.util.List org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration.configurers)
↑ ↓
| repositoryRestConfig defined in file ...
└─────┘
So there is circular bean dependency.
How can I register the converter above so that I don't introduce circular bean dependency?
To make it work:
#Override
public void configureConversionService(ConfigurableConversionService conversionService) {
conversionService.addConverter(String.class, Status.class, new StringToTranslatedEnumConverter<>(Status.class));
super.configureConversionService(conversionService);
}
First I created utility class that help me work with Spring beans in unmanaged objects:
#Component
public final class SpringUtils {
#Autowired private ApplicationContext ctx;
private static SpringUtils instance;
#PostConstruct
private void registerInstance() {
instance = this;
}
public static <T> T getBean(Class<T> clazz) {
return instance.ctx.getBean(clazz);
}
}
Then I created the converter:
public class StringToTranslatedEnumConverter<T extends Enum<T> & TranslatedEnum> implements Converter<String, T> {
private final ConcurrentMapCache cache;
private EnumTranslator enumTranslator;
private Class<T> type;
public StringToTranslatedEnumConverter(Class<T> type) {
this.type = type;
cache = new ConcurrentMapCache(type.getName());
}
#Override
public T convert(String from) {
if (enumTranslator == null) {
enumTranslator = SpringUtils.getBean(EnumTranslator.class);
}
Cache.ValueWrapper wrapper = cache.get(from);
if (wrapper != null) {
//noinspection unchecked
return (T) wrapper.get();
}
T translatedEnum = enumTranslator.fromText(type, from);
cache.put(from, translatedEnum);
return translatedEnum;
}
}
UPDATED
TranslatedEnum - it's interface-marker, used to mark enums which translation is only need.
public interface TranslatedEnum {
}
public enum Status implements TranslatedEnum {
CREATED, DELETED
}
The solution to this problem is Spring Core specific. In order to break circle bean dependency cycle, we have to delay setting converter in RepositoryRestConfig. It can be achieved with setter injection:
#Component
public class RepositoryRestConfig extends RepositoryRestConfigurerAdapter {
private TranslationStringToSpecificationStatusEnumConverter converter;
#Override
public void configureConversionService(ConfigurableConversionService conversionService) {
conversionService.addConverter(converter);
super.configureConversionService(conversionService);
}
#Autowired
public void setConverter(TranslationStringToSpecificationStatusEnumConverter converter) {
this.converter = converter;
}
}
You can find how to solve it in this commit by Greg Turnquist: https://github.com/pmihalcin/custom-converter-in-spring-data-rest/commit/779a6477d76dc77515b3e923079e5a6543242da2