Togglz feature state change notification

Question

I have two application - api and dashboard. Both of these applications use the same Features from the same database. Togglz console is only active in dashboard application. The issue is that when I change the state of the feature in my dashboard application, api application is not immediately aware about that. I need to restart my api in order to refresh the features state.

Is it possible to notify api application about changes of feature state without restarting?

UPDATED - Togglz configuration added

This is the a base configuration in my Maven common project(api and dashboard projects depend on this one):

@Configuration
public class FeatureToggleConfiguration {

    @Autowired
    private DataSource dataSource;

    @Bean
    public FeatureManager getFeatureManager() {
        // @formatter:off
        FeatureManager featureManager = new FeatureManagerBuilder()
            .stateRepository(new CachingStateRepository(new JDBCStateRepository(dataSource)))
            .featureEnum(ApplicationFeatures.class)
            .userProvider(new SpringSecurityUserProvider(Authority.Type.ROLE_ADMIN.getName()))
            .build();
        // @formatter:on
        return featureManager;
    }

}

ApplicationFeatures(also placed in common project):

public enum ApplicationFeatures implements Feature {

    // @formatter:off
    @EnabledByDefault
    @Label("Log Events Feature")
    LOG_EVENT_FEATURE,

    @EnabledByDefault
    @Label("Log Ok Sessions Feature")
    LOG_OK_SESSIONS_FEATURE,

    @EnabledByDefault
    @Label("Log HTTP Requests Data Feature")
    LOG_HTTP_REQUESTS_DATA_FEATURE;
    // @formatter:on

    public boolean isActive() {
        return FeatureContext.getFeatureManager().isActive(this);
    }

}

This is DashboardFeatureToggleConfiguration(for Togglz web console) from my dashboard project:

@Configuration
public class DashboardFeatureToggleConfiguration {

    @Bean
    public ServletRegistrationBean getTogglzConsole() {
        ServletRegistrationBean servlet = new ServletRegistrationBean();
        servlet.setName("TogglzConsole");
        servlet.setServlet(new TogglzConsoleServlet());
        servlet.setUrlMappings(Collections.singletonList("/togglz/*"));
        return servlet;
    }

}

Could you please include your full Togglz configuration? – chkal Mar 14 '16 at 05:54 — chkal, Mar 14 '16 at 05:54
@chkal I have added my configuration – alexanoid Mar 14 '16 at 07:06 — alexanoid, Mar 14 '16 at 07:06

score 2 · Accepted Answer · answered Mar 14 '16 at 07:50

You are using CachingStateRepository which is causing the problem your are describing. You have basically two options:

First you could remove the CachingStateRepository and use JDBCStateRepository directly. This way you will have much more hits on the database but this may be acceptable. So your configuration would look like this:

.stateRepository(new JDBCStateRepository(dataSource))

Our you could specify the TTL value for the CachingStateRepository which means that the cached entries will be cached only for a specific time:

.stateRepository(
   new CachingStateRepository(new JDBCStateRepository(dataSource), 10000)
)

In this example the TTL is set to 10000 which means that the feature state will only be cached for 10 seconds.

Togglz feature state change notification

1 Answers1