Introduce cache for rollouts status computation. (#509)

* Introduce cache for rollouts status computation.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Disable cache during tests.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Move cache into core.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* package private event listener.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fix cache invalidation.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fix sonar issues.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fixed a test that assumes that target to group assignment follows a rule
which si not the case.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

hawkbit-repository/hawkbit-repository-test/src/main/java/org/eclipse/hawkbit/repository/test/TestConfiguration.java

@@ -22,6 +22,7 @@ import org.eclipse.hawkbit.cache.DefaultDownloadIdCache;
 import org.eclipse.hawkbit.cache.DownloadIdCache;
 import org.eclipse.hawkbit.cache.TenantAwareCacheManager;
 import org.eclipse.hawkbit.event.BusProtoStuffMessageConverter;
+import org.eclipse.hawkbit.repository.RolloutStatusCache;
 import org.eclipse.hawkbit.repository.SystemManagement;
 import org.eclipse.hawkbit.repository.model.helper.EventPublisherHolder;
 import org.eclipse.hawkbit.repository.rsql.VirtualPropertyReplacer;
@@ -75,6 +76,14 @@ import org.springframework.util.AntPathMatcher;
 @EnableAutoConfiguration
 public class TestConfiguration implements AsyncConfigurer {
 
+    /**
+     * Disables caching during test to avoid concurrency failures during test.
+     */
+    @Bean
+    RolloutStatusCache rolloutStatusCache(final TenantAware tenantAware) {
+        return new RolloutStatusCache(tenantAware, 0);
+    }
+
     @Bean
     public LockRegistry lockRegistry() {
         return new DefaultLockRegistry();