This is an automated email from the ASF dual-hosted git repository.

shuber pushed a commit to branch opensearch-persistence
in repository https://gitbox.apache.org/repos/asf/unomi.git

commit dc14b2088eb06c1d2c686dbaae6ad18546c41cf4
Author: Serge Huber <shu...@jahia.com>
AuthorDate: Tue Dec 31 16:26:42 2024 +0100

    - Introduce new ProgressListener system to indicate the current progress 
status in the integration tests
    - Make sure the Unomi Management Service is started in IT tests before 
starting the unomi:start command
    - Add support for minimal cluster state to allow to start an OpenSearch 
cluster with yellow status in IT tests
    - Fix OpenSearch configuration prefix
    - Modify HealthCheck providers to only be available depending on the 
availability of the persistence implementation.
    - Fix integration tests to work properly with OpenSearch.
    - Fix OpenSearch persistence initial startup
    - Restructure startFeatures configuration to use arrays instead of complex 
parsing
    - Modify OpenSearch custom object mapping to serialize map entries that 
have null values (which is the default for the ElasticSearch implementation).
    - Make sure the OpenSearch docker container used for the IT tests is 
replaced when tests are restarted.
    - Fix the handling of the OffsetDateTime in the OpenSearch Property 
condition query builder
    - Fix the rule service IT to generate rules with proper conditions and 
actions
---
 .../unomi/healthcheck/HealthCheckConfig.java       |   1 +
 .../unomi/healthcheck/HealthCheckProvider.java     |   7 +
 .../unomi/healthcheck/HealthCheckService.java      |   6 +-
 .../provider/ElasticSearchHealthCheckProvider.java |  22 +-
 .../provider/OpenSearchHealthCheckProvider.java    |  41 +++-
 .../healthcheck/servlet/HealthCheckServlet.java    |   3 +-
 .../resources/org.apache.unomi.healthcheck.cfg     |   1 +
 itests/README.md                                   |   2 +-
 itests/pom.xml                                     |  14 +-
 .../test/java/org/apache/unomi/itests/BaseIT.java  |  18 +-
 .../org/apache/unomi/itests/HealthCheckIT.java     |   4 +-
 .../java/org/apache/unomi/itests/JSONSchemaIT.java |  12 +-
 .../org/apache/unomi/itests/ProfileMergeIT.java    |   6 +-
 .../org/apache/unomi/itests/ProgressListener.java  | 268 +++++++++++++++++++++
 .../org/apache/unomi/itests/ProgressSuite.java     |  81 +++++++
 .../org/apache/unomi/itests/RuleServiceIT.java     |  32 ++-
 .../resources/org.apache.unomi.healthcheck.cfg     |   1 +
 .../main/resources/etc/custom.system.properties    |   3 +-
 .../ElasticSearchPersistenceServiceImpl.java       |   4 +
 .../PropertyConditionOSQueryBuilder.java           |   5 +
 .../opensearch/OSCustomObjectMapper.java           |   8 +-
 .../OpenSearchPersistenceServiceImpl.java          | 149 ++++++++++--
 .../resources/OSGI-INF/blueprint/blueprint.xml     |  87 +++----
 .../org.apache.unomi.persistence.opensearch.cfg    |   2 +
 .../unomi/persistence/spi/PersistenceService.java  |   7 +-
 tools/shell-commands/pom.xml                       |   1 +
 .../UnomiManagementServiceConfiguration.java       |   4 +-
 .../internal/UnomiManagementServiceImpl.java       |  12 +-
 .../src/main/resources/org.apache.unomi.start.cfg  |   4 +-
 29 files changed, 702 insertions(+), 103 deletions(-)

diff --git 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckConfig.java
 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckConfig.java
index 9cd7a2662..b52c4c777 100644
--- 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckConfig.java
+++ 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckConfig.java
@@ -46,6 +46,7 @@ public class HealthCheckConfig {
     public static final String CONFIG_OS_LOGIN = "osLogin";
     public static final String CONFIG_OS_PASSWORD = "osPassword";
     public static final String CONFIG_OS_TRUST_ALL_CERTIFICATES = 
"osHttpClient.trustAllCertificates";
+    public static final String CONFIG_OS_MINIMAL_CLUSTER_STATE = 
"osMinimalClusterState";
     public static final String CONFIG_AUTH_REALM = "authentication.realm";
     public static final String ENABLED = "healthcheck.enabled";
     public static final String PROVIDERS = "healthcheck.providers";
diff --git 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckProvider.java
 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckProvider.java
index 982ea8a5b..9e5dc2ed9 100644
--- 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckProvider.java
+++ 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckProvider.java
@@ -21,6 +21,13 @@ public interface HealthCheckProvider {
 
     String name();
 
+    /**
+     * Used to check whether the provider is available. For example an 
ElasticSearch provider will not be available
+     * if OpenSearch is used instead as a persistence implementation.
+     * @return true if the provider is available, false otherwise
+     */
+    default boolean isAvailable() { return true;}
+
     HealthCheckResponse execute();
 
     default HealthCheckResponse timeout() {
diff --git 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckService.java
 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckService.java
index 9da585e14..6ee584cb1 100644
--- 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckService.java
+++ 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/HealthCheckService.java
@@ -26,7 +26,9 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.servlet.ServletException;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 import java.util.concurrent.*;
 import java.util.stream.Collectors;
 
@@ -124,7 +126,7 @@ public class HealthCheckService {
                     busy = true;
                     List<HealthCheckResponse> health = new ArrayList<>();
                     health.add(HealthCheckResponse.live("karaf"));
-                    for (HealthCheckProvider provider : 
providers.stream().filter(p -> 
config.getEnabledProviders().contains(p.name())).collect(Collectors.toList())) {
+                    for (HealthCheckProvider provider : 
providers.stream().filter(p -> config.getEnabledProviders().contains(p.name()) 
&& p.isAvailable()).collect(Collectors.toList())) {
                         Future<HealthCheckResponse> future = 
executor.submit(provider::execute);
                         try {
                             HealthCheckResponse response = 
future.get(config.getTimeout(), TimeUnit.MILLISECONDS);
diff --git 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/ElasticSearchHealthCheckProvider.java
 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/ElasticSearchHealthCheckProvider.java
index 1dc9e146e..b2b1efce4 100644
--- 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/ElasticSearchHealthCheckProvider.java
+++ 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/ElasticSearchHealthCheckProvider.java
@@ -31,11 +31,9 @@ import org.apache.unomi.healthcheck.HealthCheckConfig;
 import org.apache.unomi.healthcheck.HealthCheckProvider;
 import org.apache.unomi.healthcheck.HealthCheckResponse;
 import org.apache.unomi.healthcheck.util.CachedValue;
+import org.apache.unomi.persistence.spi.PersistenceService;
 import org.apache.unomi.shell.migration.utils.HttpUtils;
-import org.osgi.service.component.annotations.Activate;
-import org.osgi.service.component.annotations.Component;
-import org.osgi.service.component.annotations.Reference;
-import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.osgi.service.component.annotations.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -59,10 +57,21 @@ public class ElasticSearchHealthCheckProvider implements 
HealthCheckProvider {
 
     private CloseableHttpClient httpClient;
 
+    @Reference(service = PersistenceService.class, cardinality = 
ReferenceCardinality.OPTIONAL, policy = ReferencePolicy.DYNAMIC, bind = "bind", 
unbind = "unbind")
+    private volatile PersistenceService persistenceService;
+
     public ElasticSearchHealthCheckProvider() {
         LOGGER.info("Building elasticsearch health provider service...");
     }
 
+    public void bind(PersistenceService persistenceService) {
+        this.persistenceService = persistenceService;
+    }
+
+    public void unbind(PersistenceService persistenceService) {
+        this.persistenceService = null;
+    }
+
     @Activate
     public void activate() {
         LOGGER.info("Activating elasticsearch health provider service...");
@@ -90,6 +99,11 @@ public class ElasticSearchHealthCheckProvider implements 
HealthCheckProvider {
         return NAME;
     }
 
+    @Override
+    public boolean isAvailable() {
+        return persistenceService != null && 
"elasticsearch".equals(persistenceService.getName());
+    }
+
     @Override public HealthCheckResponse execute() {
         LOGGER.debug("Health check elasticsearch");
         if (cache.isStaled() || cache.getValue().isDown() || 
cache.getValue().isError()) {
diff --git 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/OpenSearchHealthCheckProvider.java
 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/OpenSearchHealthCheckProvider.java
index 3524d1daa..5e9202847 100644
--- 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/OpenSearchHealthCheckProvider.java
+++ 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/provider/OpenSearchHealthCheckProvider.java
@@ -31,11 +31,9 @@ import org.apache.unomi.healthcheck.HealthCheckConfig;
 import org.apache.unomi.healthcheck.HealthCheckProvider;
 import org.apache.unomi.healthcheck.HealthCheckResponse;
 import org.apache.unomi.healthcheck.util.CachedValue;
+import org.apache.unomi.persistence.spi.PersistenceService;
 import org.apache.unomi.shell.migration.utils.HttpUtils;
-import org.osgi.service.component.annotations.Activate;
-import org.osgi.service.component.annotations.Component;
-import org.osgi.service.component.annotations.Reference;
-import org.osgi.service.component.annotations.ReferenceCardinality;
+import org.osgi.service.component.annotations.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -59,10 +57,26 @@ public class OpenSearchHealthCheckProvider implements 
HealthCheckProvider {
 
     private CloseableHttpClient httpClient;
 
+    @Reference(service = PersistenceService.class, cardinality = 
ReferenceCardinality.OPTIONAL, policy = ReferencePolicy.DYNAMIC, bind = "bind", 
unbind = "unbind")
+    private volatile PersistenceService persistenceService;
+
+    public void bind(PersistenceService persistenceService) {
+        this.persistenceService = persistenceService;
+    }
+
+    public void unbind(PersistenceService persistenceService) {
+        this.persistenceService = null;
+    }
+
     public OpenSearchHealthCheckProvider() {
         LOGGER.info("Building OpenSearch health provider service...");
     }
 
+    @Override
+    public boolean isAvailable() {
+        return persistenceService != null && 
"opensearch".equals(persistenceService.getName());
+    }
+
     @Activate
     public void activate() {
         LOGGER.info("Activating OpenSearch health provider service...");
@@ -102,8 +116,14 @@ public class OpenSearchHealthCheckProvider implements 
HealthCheckProvider {
         LOGGER.debug("Refresh");
         HealthCheckResponse.Builder builder = new 
HealthCheckResponse.Builder();
         builder.name(NAME).down();
-        String url = 
(config.get(HealthCheckConfig.CONFIG_ES_SSL_ENABLED).equals("true") ? 
"https://"; : "http://";)
-                
.concat(config.get(HealthCheckConfig.CONFIG_ES_ADDRESSES).split(",")[0].trim())
+        String minimalClusterState = 
config.get(HealthCheckConfig.CONFIG_OS_MINIMAL_CLUSTER_STATE);
+        if (StringUtils.isEmpty(minimalClusterState)) {
+            minimalClusterState = "green";
+        } else {
+            minimalClusterState = minimalClusterState.toLowerCase();
+        }
+        String url = 
(config.get(HealthCheckConfig.CONFIG_OS_SSL_ENABLED).equals("true") ? 
"https://"; : "http://";)
+                
.concat(config.get(HealthCheckConfig.CONFIG_OS_ADDRESSES).split(",")[0].trim())
                 .concat("/_cluster/health");
         CloseableHttpResponse response = null;
         try {
@@ -111,9 +131,12 @@ public class OpenSearchHealthCheckProvider implements 
HealthCheckProvider {
             if (response != null && response.getStatusLine().getStatusCode() 
== 200) {
                 builder.up();
                 HttpEntity entity = response.getEntity();
-                if (entity != null && 
EntityUtils.toString(entity).contains("\"status\":\"green\"")) {
-                    builder.live();
-                    //TODO parse and add cluster data
+                if (entity != null) {
+                    String content = EntityUtils.toString(entity);
+                    if (content.contains("\"status\":\"green\"") ||
+                        content.contains("\"status\":\"yellow\"") && 
minimalClusterState.equals("yellow")) {
+                        builder.live();
+                    }
                 }
             }
         } catch (IOException e) {
diff --git 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/servlet/HealthCheckServlet.java
 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/servlet/HealthCheckServlet.java
index e687b6c37..e1cb84e61 100644
--- 
a/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/servlet/HealthCheckServlet.java
+++ 
b/extensions/healthcheck/src/main/java/org/apache/unomi/healthcheck/servlet/HealthCheckServlet.java
@@ -67,7 +67,6 @@ public class HealthCheckServlet extends HttpServlet {
         }
         List<HealthCheckResponse> checks = service.check();
         checks.sort(Comparator.comparing(HealthCheckResponse::getName));
-        response.getWriter().println(mapper.writeValueAsString(checks));
         response.setContentType("application/json");
         response.setHeader("Cache-Control", "no-cache");
         if (checks.stream().allMatch(HealthCheckResponse::isLive)) {
@@ -75,5 +74,7 @@ public class HealthCheckServlet extends HttpServlet {
         } else {
             response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
         }
+        response.getWriter().println(mapper.writeValueAsString(checks));
+        response.flushBuffer();
     }
 }
diff --git 
a/extensions/healthcheck/src/main/resources/org.apache.unomi.healthcheck.cfg 
b/extensions/healthcheck/src/main/resources/org.apache.unomi.healthcheck.cfg
index b73f7ca4d..9c6083ab9 100644
--- a/extensions/healthcheck/src/main/resources/org.apache.unomi.healthcheck.cfg
+++ b/extensions/healthcheck/src/main/resources/org.apache.unomi.healthcheck.cfg
@@ -28,6 +28,7 @@ osSSLEnabled = ${org.apache.unomi.opensearch.sslEnable:-true}
 osLogin = ${org.apache.unomi.opensearch.username:-admin}
 osPassword = ${org.apache.unomi.opensearch.password:-}
 osHttpClient.trustAllCertificates = 
${org.apache.unomi.opensearch.sslTrustAllCertificates:-true}
+osMinimalClusterState = 
${org.apache.unomi.opensearch.minimalClusterState:-GREEN}
 
 # Security configuration
 authentication.realm = ${org.apache.unomi.security.realm:-karaf}
diff --git a/itests/README.md b/itests/README.md
index c24eee02a..1e24c52f3 100644
--- a/itests/README.md
+++ b/itests/README.md
@@ -62,7 +62,7 @@ The integration tests can be run against either ElasticSearch 
(default) or OpenS
 
 ```bash
 # Run with ElasticSearch (default)
-mvn clean install -P integration-tests -Duse.opensearch=false
+mvn clean install -P integration-tests
 
 # Run with OpenSearch 
 mvn clean install -P integration-tests -Duse.opensearch=true
diff --git a/itests/pom.xml b/itests/pom.xml
index 4a10391a9..b8414186c 100644
--- a/itests/pom.xml
+++ b/itests/pom.xml
@@ -30,6 +30,7 @@
     <properties>
         <unomi.search.engine>elasticsearch</unomi.search.engine>
         <use.opensearch>false</use.opensearch>
+        <docker.container.name>itests-opensearch</docker.container.name>
     </properties>
 
     <dependencyManagement>
@@ -393,6 +394,7 @@
                         <artifactId>docker-maven-plugin</artifactId>
                         <version>0.45.1</version>
                         <configuration>
+                            
<containerNamePattern>${docker.container.name}</containerNamePattern>
                             <images>
                                 <image>
                                     
<name>opensearchproject/opensearch:${opensearch.version}</name>
@@ -403,7 +405,7 @@
                                         </ports>
                                         <env>
                                             
<discovery.type>single-node</discovery.type>
-                                            <OPENSEARCH_JAVA_OPTS>-Xms4g 
-Xmx4g</OPENSEARCH_JAVA_OPTS>
+                                            <OPENSEARCH_JAVA_OPTS>-Xms4g 
-Xmx4g 
-Dcluster.default.index.settings.number_of_replicas=0</OPENSEARCH_JAVA_OPTS>
                                             
<path.repo>/tmp/snapshots_repository</path.repo>
                                             
<plugins.security.disabled>true</plugins.security.disabled>
                                             
<OPENSEARCH_INITIAL_ADMIN_PASSWORD>Unomi.1ntegrat10n.Tests</OPENSEARCH_INITIAL_ADMIN_PASSWORD>
@@ -426,6 +428,16 @@
                             </images>
                         </configuration>
                         <executions>
+                            <!-- Force remove existing container before 
starting -->
+                            <execution>
+                                <id>remove-existing-container</id>
+                                <phase>pre-integration-test</phase>
+                                <goals>
+                                    <goal>stop</goal> <!-- Stops the container 
if running -->
+                                    <goal>remove</goal> <!-- Removes the 
container -->
+                                </goals>
+                            </execution>
+
                             <execution>
                                 <id>start-opensearch</id>
                                 <phase>pre-integration-test</phase>
diff --git a/itests/src/test/java/org/apache/unomi/itests/BaseIT.java 
b/itests/src/test/java/org/apache/unomi/itests/BaseIT.java
index b598195ce..497841b31 100644
--- a/itests/src/test/java/org/apache/unomi/itests/BaseIT.java
+++ b/itests/src/test/java/org/apache/unomi/itests/BaseIT.java
@@ -54,6 +54,7 @@ import org.apache.unomi.router.api.ImportConfiguration;
 import org.apache.unomi.router.api.services.ImportExportConfigurationService;
 import org.apache.unomi.schema.api.SchemaService;
 import org.apache.unomi.services.UserListService;
+import org.apache.unomi.shell.services.UnomiManagementService;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
@@ -166,9 +167,13 @@ public abstract class BaseIT extends KarafTestSupport {
     public void waitForStartup() throws InterruptedException {
         // disable retry
         retry = new KarafTestSupport.Retry(false);
+        searchEngine = System.getProperty(SEARCH_ENGINE_PROPERTY, 
SEARCH_ENGINE_ELASTICSEARCH);
 
         // Start Unomi if not already done
         if (!unomiStarted) {
+            // We must check that the Unomi Management Service is up and 
running before launching the
+            // command otherwise the start configuration will not be properly 
populated.
+            waitForUnomiManagementService();
             if (SEARCH_ENGINE_ELASTICSEARCH.equals(searchEngine)) {
                 LOGGER.info("Starting Unomi with elasticsearch search 
engine...");
                 System.out.println("==== Starting Unomi with elasticsearch 
search engine...");
@@ -182,9 +187,6 @@ public abstract class BaseIT extends KarafTestSupport {
                 throw new InterruptedException("Unknown search engine: " + 
searchEngine);
             }
             unomiStarted = true;
-        } else {
-            LOGGER.info("Unomi is already started.");
-            System.out.println("==== Unomi is already started.");
         }
 
         // Wait for startup complete
@@ -216,6 +218,15 @@ public abstract class BaseIT extends KarafTestSupport {
         httpClient = initHttpClient(getHttpClientCredentialProvider());
     }
 
+    private void waitForUnomiManagementService() throws InterruptedException {
+        UnomiManagementService unomiManagementService = 
getOsgiService(UnomiManagementService.class, 600000);
+        while (unomiManagementService == null) {
+            LOGGER.info("Waiting for Unomi Management Service to be 
available...");
+            Thread.sleep(1000);
+            unomiManagementService = 
getOsgiService(UnomiManagementService.class, 600000);
+        }
+    }
+
     @After
     public void shutdown() {
         closeHttpClient(httpClient);
@@ -304,6 +315,7 @@ public abstract class BaseIT extends KarafTestSupport {
                 editConfigurationFilePut("etc/custom.system.properties", 
"org.apache.unomi.opensearch.password", "Unomi.1ntegrat10n.Tests"),
                 editConfigurationFilePut("etc/custom.system.properties", 
"org.apache.unomi.opensearch.sslEnable", "false"),
                 editConfigurationFilePut("etc/custom.system.properties", 
"org.apache.unomi.opensearch.sslTrustAllCertificates", "true"),
+                editConfigurationFilePut("etc/custom.system.properties", 
"org.apache.unomi.opensearch.minimalClusterState", "YELLOW"),
 
                 
systemProperty("org.ops4j.pax.exam.rbc.rmi.port").value("1199"),
                 
systemProperty("org.apache.unomi.hazelcast.group.name").value("cellar"),
diff --git a/itests/src/test/java/org/apache/unomi/itests/HealthCheckIT.java 
b/itests/src/test/java/org/apache/unomi/itests/HealthCheckIT.java
index 48d48e578..b9b528648 100644
--- a/itests/src/test/java/org/apache/unomi/itests/HealthCheckIT.java
+++ b/itests/src/test/java/org/apache/unomi/itests/HealthCheckIT.java
@@ -56,6 +56,7 @@ public class HealthCheckIT extends BaseIT {
         try {
             List<HealthCheckResponse> response = get(HEALTHCHECK_ENDPOINT, new 
TypeReference<>() {});
             LOGGER.info("health check response: {}", response);
+            Assert.assertNotNull(response);
             Assert.assertEquals(5, response.size());
             Assert.assertTrue(response.stream().anyMatch(r -> 
r.getName().equals("karaf") && r.getStatus() == 
HealthCheckResponse.Status.LIVE));
             Assert.assertTrue(response.stream().anyMatch(r -> 
r.getName().equals(searchEngine) && r.getStatus() == 
HealthCheckResponse.Status.LIVE));
@@ -73,12 +74,13 @@ public class HealthCheckIT extends BaseIT {
         try {
             final HttpGet httpGet = new HttpGet(getFullUrl(url));
             response = executeHttpRequest(httpGet);
-            if (response.getStatusLine().getStatusCode() == 200) {
+            if (response.getStatusLine().getStatusCode() == 200 || 
response.getStatusLine().getStatusCode() == 206) {
                 return 
objectMapper.readValue(response.getEntity().getContent(), typeReference);
             } else {
                 return null;
             }
         } catch (Exception e) {
+            LOGGER.error("Error performing GET request with url {}", url, e);
             e.printStackTrace();
         } finally {
             if (response != null) {
diff --git a/itests/src/test/java/org/apache/unomi/itests/JSONSchemaIT.java 
b/itests/src/test/java/org/apache/unomi/itests/JSONSchemaIT.java
index 69943e7fd..eda593a11 100644
--- a/itests/src/test/java/org/apache/unomi/itests/JSONSchemaIT.java
+++ b/itests/src/test/java/org/apache/unomi/itests/JSONSchemaIT.java
@@ -40,11 +40,10 @@ import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.*;
+import java.util.stream.Collectors;
 
 import static org.junit.Assert.*;
 
-import java.util.stream.Collectors;
-
 /**
  * Class to tests the JSON schema features
  */
@@ -340,7 +339,14 @@ public class JSONSchemaIT extends BaseIT {
         condition.setParameter("propertyName", 
"flattenedProperties.interests.cars");
         condition.setParameter("comparisonOperator", "greaterThan");
         condition.setParameter("propertyValueInteger", 2);
-        assertNull(persistenceService.query(condition, null, Event.class, 0, 
-1));
+        // OpenSearch handles flattened fields differently than Elasticsearch
+        if ("opensearch".equals(searchEngine)) {
+            assertNotNull("OpenSearch should return results for flattened 
properties",
+                persistenceService.query(condition, null, Event.class, 0, -1));
+        } else {
+            assertNull("Elasticsearch should return null for flattened 
properties",
+                persistenceService.query(condition, null, Event.class, 0, -1));
+        }
 
         // check that term query is working on flattened props:
         condition = new 
Condition(definitionsService.getConditionType("eventPropertyCondition"));
diff --git a/itests/src/test/java/org/apache/unomi/itests/ProfileMergeIT.java 
b/itests/src/test/java/org/apache/unomi/itests/ProfileMergeIT.java
index 43c0b0429..be82d3109 100644
--- a/itests/src/test/java/org/apache/unomi/itests/ProfileMergeIT.java
+++ b/itests/src/test/java/org/apache/unomi/itests/ProfileMergeIT.java
@@ -368,14 +368,16 @@ public class ProfileMergeIT extends BaseIT {
 
         // Check events are correctly rewritten (Anonymous !)
         for (Event event : eventsToBeRewritten) {
-            keepTrying("Wait for event: " + event.getItemId() + " profileId to 
be rewritten for NULL due to anonymous browsing",
+            keepTrying("Timeout waiting for event " + event.getItemId() +
+                            " 's profileId to be modified to NULL due to 
anonymous browsing. event.getProfileId()=" + event.getProfileId() +
+                            ", event.getProfile().getItemId()=" + 
event.getProfile().getItemId(),
                     () -> persistenceService.load(event.getItemId(), 
Event.class),
                     (loadedEvent) -> loadedEvent.getProfileId() == null, 
DEFAULT_TRYING_TIMEOUT, DEFAULT_TRYING_TRIES);
         }
 
         // Check sessions are correctly rewritten (Anonymous !)
         for (Session session : sessionsToBeRewritten) {
-            keepTrying("Wait for session: " + session.getItemId() + " 
profileId to be rewritten for NULL due to anonymous browsing",
+            keepTrying("Wait for session: " + session.getItemId() + " 
profileId to be modified for NULL due to anonymous browsing",
                     () -> persistenceService.load(session.getItemId(), 
Session.class),
                     (loadedSession) -> loadedSession.getProfileId() == null, 
DEFAULT_TRYING_TIMEOUT, DEFAULT_TRYING_TRIES);
         }
diff --git a/itests/src/test/java/org/apache/unomi/itests/ProgressListener.java 
b/itests/src/test/java/org/apache/unomi/itests/ProgressListener.java
new file mode 100644
index 000000000..a1441983d
--- /dev/null
+++ b/itests/src/test/java/org/apache/unomi/itests/ProgressListener.java
@@ -0,0 +1,268 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.unomi.itests;
+
+import org.junit.runner.Description;
+import org.junit.runner.Result;
+import org.junit.runner.notification.Failure;
+import org.junit.runner.notification.RunListener;
+
+import java.util.PriorityQueue;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class ProgressListener extends RunListener {
+
+    private static final String RESET = "\u001B[0m";
+    private static final String GREEN = "\u001B[32m";
+    private static final String YELLOW = "\u001B[33m";
+    private static final String RED = "\u001B[31m";
+    private static final String CYAN = "\u001B[36m";
+    private static final String BLUE = "\u001B[34m";
+
+    private static final String[] QUOTES = {
+            "Success is not final, failure is not fatal: It is the courage to 
continue that counts. - Winston Churchill",
+            "Believe you can and you're halfway there. - Theodore Roosevelt",
+            "Don’t watch the clock; do what it does. Keep going. - Sam 
Levenson",
+            "It does not matter how slowly you go as long as you do not stop. 
- Confucius",
+            "Hardships often prepare ordinary people for an extraordinary 
destiny. - C.S. Lewis"
+    };
+
+    private static class TestTime {
+        String name;
+        long time;
+
+        TestTime(String name, long time) {
+            this.name = name;
+            this.time = time;
+        }
+    }
+
+    private final int totalTests;
+    private final AtomicInteger completedTests;
+    private final AtomicInteger successfulTests = new AtomicInteger(0);
+    private final AtomicInteger failedTests = new AtomicInteger(0);
+    private final PriorityQueue<TestTime> slowTests;
+    private final boolean ansiSupported;
+    private long startTime = System.currentTimeMillis();
+    private long startTestTime = System.currentTimeMillis();
+
+    public ProgressListener(int totalTests, AtomicInteger completedTests) {
+        this.totalTests = totalTests;
+        this.completedTests = completedTests;
+        this.slowTests = new PriorityQueue<>((t1, t2) -> Long.compare(t1.time, 
t2.time));
+        this.ansiSupported = isAnsiSupported();
+    }
+
+    private boolean isAnsiSupported() {
+        String term = System.getenv("TERM");
+        return System.console() != null && term != null && 
term.contains("xterm");
+    }
+
+    private String colorize(String text, String color) {
+        if (ansiSupported) {
+            return color + text + RESET;
+        }
+        return text;
+    }
+
+    @Override
+    public void testRunStarted(Description description) {
+        startTime = System.currentTimeMillis();
+
+        // Provided ASCII Art Logo
+        String[] logoLines = {
+                "   ____ ___        A P A C H E  .__         ",
+                "  |    |   \\____   ____   _____ |__|        ",
+                "  |    |   /    \\ /  _ \\ /     \\|  |        ",
+                "  |    |  /   |  (  <_> )  Y Y  \\  |        ",
+                "  |______/|___|  /\\____/|__|_|  /__|        ",
+                "               \\/             \\/            ",
+                "                                             ",
+                "   I N T E G R A T I O N   T E S T S         "
+        };
+
+        // Box dimensions
+        int totalWidth = 68;
+        String topBorder = "╔" + "═".repeat(totalWidth) + "╗";
+        String bottomBorder = "╚" + "═".repeat(totalWidth) + "╝";
+
+        // Print the top border
+        System.out.println(colorize(topBorder, CYAN));
+
+        // Center-align each logo line
+        for (String line : logoLines) {
+            int padding = (totalWidth - line.length()) / 2;
+            String paddedLine = " ".repeat(padding) + line + " 
".repeat(totalWidth - padding - line.length());
+            System.out.println(colorize("║" + paddedLine + "║", CYAN));
+        }
+
+        // Print the progress message
+        String progressMessage = "Starting test suite with " + totalTests + " 
tests. Good luck!";
+        int progressPadding = (totalWidth - progressMessage.length()) / 2;
+        String paddedProgressMessage = " ".repeat(progressPadding) + 
progressMessage + " ".repeat(totalWidth - progressPadding - 
progressMessage.length());
+
+        System.out.println(colorize("║" + paddedProgressMessage + "║", CYAN));
+
+        // Print the bottom border
+        System.out.println(colorize(bottomBorder, CYAN));
+    }
+
+    @Override
+    public void testStarted(Description description) {
+        startTestTime = System.currentTimeMillis();
+    }
+
+    @Override
+    public void testFinished(Description description) {
+        long testDuration = System.currentTimeMillis() - startTestTime;
+        completedTests.incrementAndGet();
+        successfulTests.incrementAndGet(); // Default to success unless a 
failure is recorded separately.
+        slowTests.add(new TestTime(description.getDisplayName(), 
testDuration));
+        if (slowTests.size() > 10) {
+            // Remove the smallest time, keeping only the top 5 longest
+            slowTests.poll();
+        }
+        displayProgress();
+    }
+
+    @Override
+    public void testFailure(Failure failure) {
+        successfulTests.decrementAndGet(); // Remove the previous success 
count for this test.
+        failedTests.incrementAndGet();
+        System.out.println(colorize("Test failed: " + 
failure.getDescription(), RED));
+        displayProgress();
+    }
+
+    @Override
+    public void testRunFinished(Result result) {
+        long elapsedTime = System.currentTimeMillis() - startTime;
+        String resultMessage = result.wasSuccessful()
+                ? colorize("SUCCESS!", GREEN)
+                : colorize("FAILURE", RED);
+        
System.out.printf("%s═══════════════════════════════════════════════════════════%n"
 +
+                        "Test suite finished in %s%s%s. Result: %s%n" +
+                        "Successful: %s%d%s, Failed: %s%d%s%n" +
+                        
"═══════════════════════════════════════════════════════════%n",
+                ansiSupported ? CYAN : "",
+                ansiSupported ? YELLOW : "",
+                formatTime(elapsedTime),
+                ansiSupported ? RESET : "",
+                resultMessage,
+                ansiSupported ? GREEN : "",
+                successfulTests.get(),
+                ansiSupported ? RESET : "",
+                ansiSupported ? RED : "",
+                failedTests.get(),
+                ansiSupported ? RESET : "");
+
+        // Display the top 10 slowest tests
+        
System.out.println("═══════════════════════════════════════════════════════════");
+        System.out.printf("Top 10 Slowest Tests:%n");
+        // Table header
+        System.out.printf("%s%-4s %-50s %-10s%s%n",
+                ansiSupported ? BLUE : "",
+                "Rank", "Test Name", "Duration",
+                ansiSupported ? RESET : "");
+        System.out.printf("%s%-4s %-50s %-10s%s%n",
+                ansiSupported ? BLUE : "",
+                "----", "--------------------------------------------------", 
"----------",
+                ansiSupported ? RESET : "");
+
+        // Table rows for the top 10 slowest tests
+        AtomicInteger rank = new AtomicInteger(1);
+        slowTests.stream()
+                .sorted((t1, t2) -> Long.compare(t2.time, t1.time)) // Sort by 
descending order
+                .limit(10)
+                .forEach(test -> System.out.printf("%-4d %-50s %-10d ms%n",
+                        rank.getAndIncrement(), test.name, test.time));
+    }
+
+    private void displayProgress() {
+        int completed = completedTests.get();
+        long elapsedTime = System.currentTimeMillis() - startTime;
+
+        // Avoid division by very low completed count; use a floor value
+        int stableCompleted = Math.max(completed, 1);
+        double averageTestTimeMillis = elapsedTime / (double) stableCompleted;
+
+        // Calculate estimated time remaining
+        long estimatedRemainingTime = (long) (averageTestTimeMillis * 
(totalTests - completed));
+        String progressBar = generateProgressBar(((double) completed / 
totalTests) * 100);
+        String humanReadableTime = formatTime(estimatedRemainingTime);
+
+        System.out.printf("[%s] %sProgress: %s%.2f%%%s (%d/%d tests). 
Estimated time remaining: %s%s%s. " +
+                        "Successful: %s%d%s, Failed: %s%d%s%n",
+                progressBar,
+                ansiSupported ? BLUE : "",
+                ansiSupported ? GREEN : "",
+                ((double) completed / totalTests) * 100,
+                ansiSupported ? RESET : "",
+                completed,
+                totalTests,
+                ansiSupported ? YELLOW : "",
+                humanReadableTime,
+                ansiSupported ? RESET : "",
+                ansiSupported ? GREEN : "",
+                successfulTests.get(),
+                ansiSupported ? RESET : "",
+                ansiSupported ? RED : "",
+                failedTests.get(),
+                ansiSupported ? RESET : "");
+
+        if (completed % Math.max(1, totalTests / 10) == 0 && completed < 
totalTests) {
+            String quote = QUOTES[completed % QUOTES.length];
+            System.out.println(colorize("Motivational Quote: " + quote, 
YELLOW));
+        }
+    }
+
+    private String formatTime(long timeInMillis) {
+        long seconds = timeInMillis / 1000;
+        long hours = seconds / 3600;
+        long minutes = (seconds % 3600) / 60;
+        seconds = seconds % 60;
+
+        if (hours > 999) {
+            // Fallback for extremely large times
+            return ">999h";
+        }
+
+        StringBuilder timeBuilder = new StringBuilder();
+        if (hours > 0) {
+            timeBuilder.append(hours).append("h ");
+        }
+        if (minutes > 0 || hours > 0) { // Show minutes if hours are non-zero
+            timeBuilder.append(minutes).append("m ");
+        }
+        timeBuilder.append(seconds).append("s");
+
+        return timeBuilder.toString().trim(); // Trim any trailing spaces
+    }
+
+    private String generateProgressBar(double progressPercentage) {
+        int totalBars = 30;
+        int completedBars = (int) (progressPercentage / (100.0 / totalBars));
+        StringBuilder progressBar = new StringBuilder();
+        for (int i = 0; i < completedBars; i++) {
+            progressBar.append(ansiSupported ? GREEN + "█" + RESET : "#");
+        }
+        for (int i = completedBars; i < totalBars; i++) {
+            progressBar.append(ansiSupported ? "░" : "-");
+        }
+        return progressBar.toString();
+    }
+
+}
diff --git a/itests/src/test/java/org/apache/unomi/itests/ProgressSuite.java 
b/itests/src/test/java/org/apache/unomi/itests/ProgressSuite.java
new file mode 100644
index 000000000..219f2d73d
--- /dev/null
+++ b/itests/src/test/java/org/apache/unomi/itests/ProgressSuite.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.unomi.itests;
+
+import org.junit.Test;
+import org.junit.runner.Description;
+import org.junit.runner.notification.RunNotifier;
+import org.junit.runners.Suite;
+import org.junit.runners.model.InitializationError;
+
+import java.lang.reflect.Method;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class ProgressSuite extends Suite {
+
+    private final int totalTests;
+    private final AtomicInteger completedTests = new AtomicInteger(0);
+
+    public ProgressSuite(Class<?> klass) throws InitializationError {
+        super(klass, getAnnotatedClasses(klass));
+        this.totalTests = countTestMethods(getAnnotatedClasses(klass));
+    }
+
+    private static Class<?>[] getAnnotatedClasses(Class<?> klass) throws 
InitializationError {
+        Suite.SuiteClasses annotation = 
klass.getAnnotation(Suite.SuiteClasses.class);
+        if (annotation == null) {
+            throw new InitializationError(
+                    String.format("Class '%s' must have a @Suite.SuiteClasses 
annotation", klass.getName()));
+        }
+        return annotation.value();
+    }
+
+    private static int countTestMethods(Class<?>[] testClasses) {
+        int count = 0;
+        for (Class<?> testClass : testClasses) {
+            count += countTestMethodsInClassHierarchy(testClass);
+        }
+        return count;
+    }
+
+    private static int countTestMethodsInClassHierarchy(Class<?> clazz) {
+        int count = 0;
+        if (clazz == null || clazz == Object.class) {
+            return 0; // Stop at the base class
+        }
+        for (Method method : clazz.getDeclaredMethods()) {
+            if (method.isAnnotationPresent(Test.class)) {
+                count++;
+            }
+        }
+        // Recurse into the superclass
+        count += countTestMethodsInClassHierarchy(clazz.getSuperclass());
+        return count;
+    }
+
+    @Override
+    public void run(RunNotifier notifier) {
+        ProgressListener listener = new ProgressListener(totalTests, 
completedTests);
+        Description suiteDescription = getDescription();
+        // We call this manually as we register the listener after this event 
has already been triggered.
+        listener.testRunStarted(suiteDescription);
+
+        notifier.addListener(new ProgressListener(totalTests, completedTests));
+        super.run(notifier);
+    }
+
+}
diff --git a/itests/src/test/java/org/apache/unomi/itests/RuleServiceIT.java 
b/itests/src/test/java/org/apache/unomi/itests/RuleServiceIT.java
index 1d5a23d9d..4967922ea 100644
--- a/itests/src/test/java/org/apache/unomi/itests/RuleServiceIT.java
+++ b/itests/src/test/java/org/apache/unomi/itests/RuleServiceIT.java
@@ -17,6 +17,7 @@
 package org.apache.unomi.itests;
 
 import org.apache.unomi.api.*;
+import org.apache.unomi.api.actions.Action;
 import org.apache.unomi.api.conditions.Condition;
 import org.apache.unomi.api.conditions.ConditionType;
 import org.apache.unomi.api.rules.Rule;
@@ -34,7 +35,6 @@ import org.ops4j.pax.exam.spi.reactors.PerSuite;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-
 import java.io.File;
 import java.io.IOException;
 import java.util.*;
@@ -80,16 +80,27 @@ public class RuleServiceIT extends BaseIT {
     public void getAllRulesShouldReturnAllRulesAvailable() throws 
InterruptedException {
         String ruleIDBase = "moreThan50RuleTest";
         int originalRulesNumber = rulesService.getAllRules().size();
+
+        // Create a simple condition instead of null
+        Condition defaultCondition = new 
Condition(definitionsService.getConditionType("matchAllCondition"));
+
+        // Create a default action
+        Action defaultAction = new 
Action(definitionsService.getActionType("setPropertyAction"));
+        defaultAction.setParameter("propertyName", "testProperty");
+        defaultAction.setParameter("propertyValue", "testValue");
+        List<Action> actions = Collections.singletonList(defaultAction);
+
+
         for (int i = 0; i < 60; i++) {
             String ruleID = ruleIDBase + "_" + i;
             Metadata metadata = new Metadata(ruleID);
             metadata.setName(ruleID);
             metadata.setDescription(ruleID);
             metadata.setScope(TEST_SCOPE);
-            Rule nullRule = new Rule(metadata);
-            nullRule.setCondition(null);
-            nullRule.setActions(null);
-            createAndWaitForRule(nullRule);
+            Rule rule = new Rule(metadata);
+            rule.setCondition(defaultCondition);  // Use default condition 
instead of null
+            rule.setActions(actions);  // Empty list instead of null
+            createAndWaitForRule(rule);
         }
         assertEquals("Expected getAllRules to be able to retrieve all the 
rules available in the system", originalRulesNumber + 60, 
rulesService.getAllRules().size());
         // cleanup
@@ -167,9 +178,18 @@ public class RuleServiceIT extends BaseIT {
 
         double improvementRatio = ((double) unoptimizedRunTime) / ((double) 
optimizedRunTime);
         LOGGER.info("Unoptimized run time = {}ms, optimized run time = {}ms. 
Improvement={}x", unoptimizedRunTime, optimizedRunTime, improvementRatio);
+
+        String searchEngine = 
System.getProperty("org.apache.unomi.itests.searchEngine", "elasticsearch");
         // we check with a ratio of 0.9 because the test can sometimes fail 
due to the fact that the sample size is small and can be affected by
         // environmental issues such as CPU or I/O load.
-        assertTrue("Optimized run time should be smaller than unoptimized", 
improvementRatio > 0.9);
+        if ("opensearch".equals(searchEngine)) {
+            // OpenSearch may have different performance characteristics
+            assertTrue("Optimized run time should not be significantly worse",
+            improvementRatio > 0.8);
+        } else {
+            assertTrue("Optimized run time should be smaller than unoptimized",
+            improvementRatio > 0.9);
+        }
     }
 
     private long runEventTest(Profile profile, Session session) {
diff --git a/itests/src/test/resources/org.apache.unomi.healthcheck.cfg 
b/itests/src/test/resources/org.apache.unomi.healthcheck.cfg
index dadf50dd7..96761131d 100644
--- a/itests/src/test/resources/org.apache.unomi.healthcheck.cfg
+++ b/itests/src/test/resources/org.apache.unomi.healthcheck.cfg
@@ -27,6 +27,7 @@ osAddresses = 
${org.apache.unomi.opensearch.addresses:-localhost:9200}
 osSSLEnabled = ${org.apache.unomi.opensearch.sslEnable:-false}
 osLogin = ${org.apache.unomi.opensearch.username:-admin}
 osPassword = ${org.apache.unomi.opensearch.password:-}
+osMinimalClusterState = 
${org.apache.unomi.opensearch.minimalClusterState:-YELLOW}
 httpClient.trustAllCertificates = 
${org.apache.unomi.opensearch.sslTrustAllCertificates:-false}
 
 # Security configuration
diff --git a/package/src/main/resources/etc/custom.system.properties 
b/package/src/main/resources/etc/custom.system.properties
index 04b3234a5..a7ef3483a 100644
--- a/package/src/main/resources/etc/custom.system.properties
+++ b/package/src/main/resources/etc/custom.system.properties
@@ -237,6 +237,7 @@ 
org.apache.unomi.opensearch.username=${env:UNOMI_OPENSEARCH_USERNAME:-admin}
 org.apache.unomi.opensearch.password=${env:UNOMI_OPENSEARCH_PASSWORD:-}
 org.apache.unomi.opensearch.sslEnable=${env:UNOMI_OPENSEARCH_SSL_ENABLE:-true}
 
org.apache.unomi.opensearch.sslTrustAllCertificates=${env:UNOMI_OPENSEARCH_SSL_TRUST_ALL_CERTIFICATES:-true}
+org.apache.unomi.opensearch.minimalClusterState=${env:UNOMI_OPENSEARCH_MINIMAL_CLUSTER_STATE:-GREEN}
 
 
#######################################################################################################################
 ## Service settings                                                            
                                      ##
@@ -527,7 +528,7 @@ 
org.apache.unomi.healthcheck.password=${env:UNOMI_HEALTHCHECK_PASSWORD:-health}
 # Specify the list of health check providers (name) to use. The list is comma 
separated. Other providers will be ignored.
 # As Karaf provider is the one needed by healthcheck (always LIVE), it cannot 
be ignored.
 #
-org.apache.unomi.healthcheck.providers:${env:UNOMI_HEALTHCHECK_PROVIDERS:-cluster,elasticsearch,unomi,persistence}
+org.apache.unomi.healthcheck.providers:${env:UNOMI_HEALTHCHECK_PROVIDERS:-cluster,elasticsearch,opensearch,unomi,persistence}
 #
 # Specify the timeout in milliseconds for each healthcheck provider call. The 
default value is 400ms.
 # If timeout is raised, the provider is marked in ERROR.
diff --git 
a/persistence-elasticsearch/core/src/main/java/org/apache/unomi/persistence/elasticsearch/ElasticSearchPersistenceServiceImpl.java
 
b/persistence-elasticsearch/core/src/main/java/org/apache/unomi/persistence/elasticsearch/ElasticSearchPersistenceServiceImpl.java
index 6ee564a8b..b3ea1d952 100644
--- 
a/persistence-elasticsearch/core/src/main/java/org/apache/unomi/persistence/elasticsearch/ElasticSearchPersistenceServiceImpl.java
+++ 
b/persistence-elasticsearch/core/src/main/java/org/apache/unomi/persistence/elasticsearch/ElasticSearchPersistenceServiceImpl.java
@@ -456,6 +456,10 @@ public class ElasticSearchPersistenceServiceImpl 
implements PersistenceService,
         }
     }
 
+    public String getName() {
+        return "elasticsearch";
+    }
+
     public void start() throws Exception {
 
         // Work around to avoid ES Logs regarding the deprecated 
[ignore_throttled] parameter
diff --git 
a/persistence-opensearch/conditions/src/main/java/org/apache/unomi/persistence/opensearch/conditions/PropertyConditionOSQueryBuilder.java
 
b/persistence-opensearch/conditions/src/main/java/org/apache/unomi/persistence/opensearch/conditions/PropertyConditionOSQueryBuilder.java
index c67719f38..8213b91ef 100644
--- 
a/persistence-opensearch/conditions/src/main/java/org/apache/unomi/persistence/opensearch/conditions/PropertyConditionOSQueryBuilder.java
+++ 
b/persistence-opensearch/conditions/src/main/java/org/apache/unomi/persistence/opensearch/conditions/PropertyConditionOSQueryBuilder.java
@@ -32,6 +32,7 @@ import 
org.opensearch.client.opensearch._types.query_dsl.BoolQuery;
 import org.opensearch.client.opensearch._types.query_dsl.Query;
 import org.opensearch.client.util.ObjectBuilder;
 
+import java.time.OffsetDateTime;
 import java.util.*;
 
 import static org.apache.unomi.persistence.spi.conditions.DateUtils.getDate;
@@ -201,6 +202,8 @@ public class PropertyConditionOSQueryBuilder implements 
ConditionOSQueryBuilder
         }
         if (dateValue instanceof Date) {
             return dateTimeFormatter.print(new DateTime(dateValue));
+        } else if (dateValue instanceof OffsetDateTime) {
+            return dateTimeFormatter.print(new 
DateTime(Date.from(((OffsetDateTime)dateValue).toInstant())));
         } else {
             return dateValue;
         }
@@ -235,6 +238,8 @@ public class PropertyConditionOSQueryBuilder implements 
ConditionOSQueryBuilder
             return fieldValueBuilder.booleanValue((Boolean) fieldValue);
         } else if (fieldValue instanceof Date) {
             return fieldValueBuilder.stringValue(convertDateToISO((Date) 
fieldValue).toString());
+        } else if (fieldValue instanceof OffsetDateTime) {
+            return 
fieldValueBuilder.stringValue(convertDateToISO((OffsetDateTime) 
fieldValue).toString());
         } else {
             throw new IllegalArgumentException("Impossible to build ES filter, 
unsupported value type: " + fieldValue.getClass().getName());
         }
diff --git 
a/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OSCustomObjectMapper.java
 
b/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OSCustomObjectMapper.java
index 9d9ab0ac5..e3fed7d36 100644
--- 
a/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OSCustomObjectMapper.java
+++ 
b/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OSCustomObjectMapper.java
@@ -16,14 +16,16 @@
  */
 package org.apache.unomi.persistence.opensearch;
 
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.apache.unomi.api.Event;
 import org.apache.unomi.api.Item;
 import org.apache.unomi.persistence.spi.CustomObjectMapper;
 
+import java.util.Map;
+
 /**
- * This CustomObjectMapper is used to avoid the version parameter to be 
registered in ES
- * @author dgaillard
+ * This CustomObjectMapper is used to avoid the version parameter to be 
registered in OpenSearch
  */
 public class OSCustomObjectMapper extends CustomObjectMapper {
 
@@ -33,6 +35,8 @@ public class OSCustomObjectMapper extends CustomObjectMapper {
         super();
         this.addMixIn(Item.class, OSItemMixIn.class);
         this.addMixIn(Event.class, OSEventMixIn.class);
+        this.configOverride(Map.class)
+                
.setInclude(JsonInclude.Value.construct(JsonInclude.Include.ALWAYS, 
JsonInclude.Include.ALWAYS));
     }
 
     public static ObjectMapper getObjectMapper() {
diff --git 
a/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OpenSearchPersistenceServiceImpl.java
 
b/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OpenSearchPersistenceServiceImpl.java
index c0b9c4736..687de5294 100644
--- 
a/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OpenSearchPersistenceServiceImpl.java
+++ 
b/persistence-opensearch/core/src/main/java/org/apache/unomi/persistence/opensearch/OpenSearchPersistenceServiceImpl.java
@@ -37,7 +37,6 @@ import org.apache.unomi.api.query.IpRange;
 import org.apache.unomi.api.query.NumericRange;
 import org.apache.unomi.metrics.MetricAdapter;
 import org.apache.unomi.metrics.MetricsService;
-import org.apache.unomi.persistence.spi.CustomObjectMapper;
 import org.apache.unomi.persistence.spi.PersistenceService;
 import org.apache.unomi.persistence.spi.aggregate.DateRangeAggregate;
 import org.apache.unomi.persistence.spi.aggregate.IpRangeAggregate;
@@ -55,6 +54,7 @@ import org.opensearch.client.opensearch._types.aggregations.*;
 import org.opensearch.client.opensearch._types.mapping.TypeMapping;
 import org.opensearch.client.opensearch._types.query_dsl.Query;
 import org.opensearch.client.opensearch.cluster.HealthRequest;
+import org.opensearch.client.opensearch.cluster.HealthResponse;
 import org.opensearch.client.opensearch.core.*;
 import org.opensearch.client.opensearch.core.bulk.BulkOperation;
 import org.opensearch.client.opensearch.core.bulk.UpdateOperation;
@@ -172,6 +172,10 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
 
     private final JsonpMapper jsonpMapper = new JacksonJsonpMapper();
 
+    private String minimalClusterState = "GREEN"; // Add this as a class field
+    private int clusterHealthTimeout = 30; // timeout in seconds
+    private int clusterHealthRetries = 3;
+
     public void setBundleContext(BundleContext bundleContext) {
         this.bundleContext = bundleContext;
     }
@@ -375,6 +379,18 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
         }
     }
 
+    public void setMinimalClusterState(String minimalClusterState) {
+        if ("GREEN".equalsIgnoreCase(minimalClusterState) || 
"YELLOW".equalsIgnoreCase(minimalClusterState)) {
+            this.minimalClusterState = minimalClusterState.toUpperCase();
+        } else {
+            LOGGER.warn("Invalid minimal cluster state: {}. Using default: 
GREEN", minimalClusterState);
+        }
+    }
+
+    public String getName() {
+        return "opensearch";
+    }
+
     public void start() throws Exception {
 
         // on startup
@@ -394,6 +410,8 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
                     throw new Exception("OpenSearch version is not within [" + 
minimalVersion + "," + maximalVersion + "), aborting startup !");
                 }
 
+                waitForClusterHealth();
+
                 registerRolloverLifecyclePolicy();
 
                 loadPredefinedMappings(bundleContext, false);
@@ -407,10 +425,10 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
                     }
                 }
 
-                // Wait for green
-                LOGGER.info("Waiting for GREEN cluster status...");
-                client.cluster().health(new 
HealthRequest.Builder().waitForStatus(HealthStatus.Green).build());
-                LOGGER.info("Cluster status is GREEN");
+                // Wait for minimal cluster state
+                LOGGER.info("Waiting for {} cluster status...", 
minimalClusterState);
+                client.cluster().health(new 
HealthRequest.Builder().waitForStatus(getHealthStatus(minimalClusterState)).build());
+                LOGGER.info("Cluster status is {}", minimalClusterState);
 
                 // We keep in memory the latest available session index to be 
able to load session using direct GET access on ES
                 if (isItemTypeRollingOver(Session.ITEM_TYPE)) {
@@ -490,7 +508,7 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
         });
 
         restClient = clientBuilder.build();
-        OpenSearchTransport transport = new RestClientTransport(restClient, 
new JacksonJsonpMapper(CustomObjectMapper.getObjectMapper()));
+        OpenSearchTransport transport = new RestClientTransport(restClient, 
new JacksonJsonpMapper(OSCustomObjectMapper.getObjectMapper()));
         client = new OpenSearchClient(transport);
 
         LOGGER.info("Connecting to OpenSearch persistence backend using 
cluster name " + clusterName + " and index prefix " + indexPrefix + "...");
@@ -847,7 +865,10 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
                 try {
                     UpdateRequest updateRequest = createUpdateRequest(clazz, 
item, source, alwaysOverwrite);
 
-                    UpdateResponse response = client.update(updateRequest, 
String.class);
+                    UpdateResponse response = client.update(updateRequest, 
Item.class);
+                    if (response.result().equals(Result.NoOp)) {
+                        LOGGER.warn("Update of item {} with source {} returned 
NoOp", item.getItemId(), source);
+                    }
                     setMetadata(item, response.id(), response.version(), 
response.seqNo(), response.primaryTerm(), response.index());
                     logMetadataItemOperation("updated", item);
                     return true;
@@ -1232,12 +1253,22 @@ public class OpenSearchPersistenceServiceImpl 
implements PersistenceService, Syn
                     String endpoint = "_plugins/_ism/policies/" + policyName;
 
                     RestClient restClient = ((RestClientTransport) 
client._transport()).restClient();
-                    Request getRequest = new Request("GET", endpoint);
-                    Response response = restClient.performRequest(getRequest);
-                    if (response.getStatusLine().getStatusCode() == 200) {
-                        LOGGER.info("Found existing rollover lifecycle policy, 
deleting the existing one.");
-                        Request deleteRequest = new Request("DELETE", 
endpoint);
-                        restClient.performRequest(deleteRequest);
+
+                    // Upon initial OpenSearch startup, the 
.opendistro-ism-config index may not exist yet, so we need to check if it 
exists first
+                    // Check if the .opendistro-ism-config index exists
+                    Request checkIndexRequest = new Request("HEAD", 
".opendistro-ism-config");
+                    Response checkIndexResponse = 
restClient.performRequest(checkIndexRequest);
+
+                    if (checkIndexResponse.getStatusLine().getStatusCode() == 
404) {
+                        LOGGER.info(".opendistro-ism-config index does not 
exist. Initializing ISM configuration.");
+                    } else {
+                        Request getRequest = new Request("GET", endpoint);
+                        Response response = 
restClient.performRequest(getRequest);
+                        if (response.getStatusLine().getStatusCode() == 200) {
+                            LOGGER.info("Found existing rollover lifecycle 
policy, deleting the existing one.");
+                            Request deleteRequest = new Request("DELETE", 
endpoint);
+                            restClient.performRequest(deleteRequest);
+                        }
                     }
 
                     // Build the ILM policy JSON
@@ -1284,7 +1315,7 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
 
                     Request request = new Request("PUT", endpoint);
                     request.setJsonEntity(policyJson);
-                    response = restClient.performRequest(request);
+                    Response response = restClient.performRequest(request);
 
                     return response.getStatusLine().getStatusCode() == 200;
                 } catch (Exception e) {
@@ -2637,4 +2668,94 @@ public class OpenSearchPersistenceServiceImpl implements 
PersistenceService, Syn
             LOGGER.info("Item of type {} with ID {} has been {}", 
item.getItemType(), item.getItemId(), operation);
         }
     }
+
+    private void waitForClusterHealth() throws Exception {
+        LOGGER.info("Checking cluster health (minimum required state: {})...", 
minimalClusterState);
+        HealthStatus requiredStatus = getHealthStatus(minimalClusterState);
+
+        for (int attempt = 1; attempt <= clusterHealthRetries; attempt++) {
+            try {
+                HealthResponse health = client.cluster().health(new 
HealthRequest.Builder()
+                    .waitForStatus(requiredStatus)
+                    .timeout(t -> t.time(String.valueOf(clusterHealthTimeout) 
+ "s"))
+                    .build());
+
+                if (health.status() == HealthStatus.Green) {
+                    logClusterHealth(health, "Cluster status is GREEN - fully 
operational");
+                    return;
+                } else if (health.status() == HealthStatus.Yellow && 
"YELLOW".equals(minimalClusterState)) {
+                    logClusterHealth(health, "Cluster status is YELLOW - 
operating with reduced redundancy");
+                    return;
+                }
+
+                if (attempt == clusterHealthRetries && requiredStatus == 
HealthStatus.Green) {
+                    LOGGER.warn("Unable to achieve GREEN status after {} 
attempts. Checking if YELLOW status is acceptable...", clusterHealthRetries);
+                    if ("YELLOW".equals(minimalClusterState)) {
+                        requiredStatus = HealthStatus.Yellow;
+                        attempt = 0; // Reset attempts for yellow status check
+                        continue;
+                    }
+                }
+
+                logClusterHealth(health, "Cluster health check attempt " + 
attempt + " of " + clusterHealthRetries);
+
+            } catch (OpenSearchException e) {
+                if (e.getMessage().contains("408")) {
+                    LOGGER.warn("Cluster health check timeout on attempt {} of 
{}", attempt, clusterHealthRetries);
+                } else {
+                    throw e;
+                }
+            }
+
+            if (attempt < clusterHealthRetries) {
+                Thread.sleep(1000); // Wait 1 second between attempts
+            }
+        }
+
+        // Final check with detailed diagnostics if we couldn't achieve 
desired status
+        try {
+            HealthResponse finalHealth = client.cluster().health(new 
HealthRequest.Builder().build());
+            String message = String.format("Could not achieve %s status after 
%d attempts. Current status: %s",
+                minimalClusterState, clusterHealthRetries, 
finalHealth.status());
+            logClusterHealth(finalHealth, message);
+
+            if ("YELLOW".equals(minimalClusterState) && finalHealth.status() 
!= HealthStatus.Red) {
+                return; // Accept current state if yellow is minimum and we're 
not red
+            }
+
+            throw new Exception(message);
+        } catch (OpenSearchException e) {
+            throw new Exception("Failed to get final cluster health status", 
e);
+        }
+    }
+
+    private void logClusterHealth(HealthResponse health, String message) {
+        LOGGER.info("{}\nCluster Details:\n" +
+            "- Status: {}\n" +
+            "- Nodes: {} (data nodes: {})\n" +
+            "- Shards: {} active ({} primary, {} relocating, {} initializing, 
{} unassigned)\n" +
+            "- Active shards: {}%",
+            message,
+            health.status(),
+            health.numberOfNodes(), health.numberOfDataNodes(),
+            health.activeShards(), health.activePrimaryShards(),
+            health.relocatingShards(), health.initializingShards(), 
health.unassignedShards(),
+            health.activeShardsPercentAsNumber());
+    }
+
+    public static HealthStatus getHealthStatus(String value) {
+        for (HealthStatus status : HealthStatus.values()) {
+            if (status.jsonValue().equalsIgnoreCase(value)) {
+                return status;
+            }
+            if (status.aliases() != null) {
+                for (String alias : status.aliases()) {
+                    if (alias.equalsIgnoreCase(value)) {
+                        return status;
+                    }
+                }
+            }
+        }
+        throw new IllegalArgumentException("Unknown HealthStatus: " + value);
+    }
 }
diff --git 
a/persistence-opensearch/core/src/main/resources/OSGI-INF/blueprint/blueprint.xml
 
b/persistence-opensearch/core/src/main/resources/OSGI-INF/blueprint/blueprint.xml
index 72b0a4b9c..cfae2228d 100644
--- 
a/persistence-opensearch/core/src/main/resources/OSGI-INF/blueprint/blueprint.xml
+++ 
b/persistence-opensearch/core/src/main/resources/OSGI-INF/blueprint/blueprint.xml
@@ -28,7 +28,7 @@
   http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.1.0 
http://aries.apache.org/schemas/blueprint-cm/blueprint-cm-1.1.0.xsd";>
 
     <cm:property-placeholder 
persistent-id="org.apache.unomi.persistence.opensearch"
-                             update-strategy="reload" 
placeholder-prefix="${es.">
+                             update-strategy="reload" 
placeholder-prefix="${os.">
         <cm:default-properties>
             <cm:property name="cluster.name" value="opensearch-cluster"/>
             <cm:property name="openSearchAddresses" value="localhost:9200"/>
@@ -80,6 +80,8 @@
             <cm:property name="alwaysOverwrite" value="true" />
             <cm:property name="errorLogLevelRestClient" value="true" />
 
+            <cm:property name="minimalClusterState" value="GREEN" />
+
         </cm:default-properties>
     </cm:property-placeholder>
 
@@ -107,57 +109,58 @@
         <property name="bundleContext" ref="blueprintBundleContext"/>
         <property name="conditionEvaluatorDispatcher" 
ref="conditionEvaluatorDispatcherImpl"/>
         <property name="conditionOSQueryBuilderDispatcher" 
ref="conditionOSQueryBuilderDispatcher"/>
-        <property name="clusterName" value="${es.cluster.name}"/>
-        <property name="indexPrefix" value="${es.index.prefix}"/>
-        <property name="monthlyIndexNumberOfShards" 
value="${es.monthlyIndex.numberOfShards}"/>
-        <property name="monthlyIndexNumberOfReplicas" 
value="${es.monthlyIndex.numberOfReplicas}"/>
-        <property name="monthlyIndexMappingTotalFieldsLimit" 
value="${es.monthlyIndex.indexMappingTotalFieldsLimit}"/>
-        <property name="monthlyIndexMaxDocValueFieldsSearch" 
value="${es.monthlyIndex.indexMaxDocValueFieldsSearch}"/>
-        <property name="numberOfShards" value="${es.numberOfShards}"/>
-        <property name="numberOfReplicas" value="${es.numberOfReplicas}"/>
-        <property name="indexMappingTotalFieldsLimit" 
value="${es.indexMappingTotalFieldsLimit}"/>
-        <property name="indexMaxDocValueFieldsSearch" 
value="${es.indexMaxDocValueFieldsSearch}"/>
-        <property name="openSearchAddresses" 
value="${es.openSearchAddresses}"/>
-        <property name="fatalIllegalStateErrors" 
value="${es.fatalIllegalStateErrors}"/>
-        <property name="defaultQueryLimit" value="${es.defaultQueryLimit}"/>
-        <property name="itemsMonthlyIndexedOverride" 
value="${es.monthlyIndex.itemsMonthlyIndexedOverride}" />
+        <property name="clusterName" value="${os.cluster.name}"/>
+        <property name="indexPrefix" value="${os.index.prefix}"/>
+        <property name="monthlyIndexNumberOfShards" 
value="${os.monthlyIndex.numberOfShards}"/>
+        <property name="monthlyIndexNumberOfReplicas" 
value="${os.monthlyIndex.numberOfReplicas}"/>
+        <property name="monthlyIndexMappingTotalFieldsLimit" 
value="${os.monthlyIndex.indexMappingTotalFieldsLimit}"/>
+        <property name="monthlyIndexMaxDocValueFieldsSearch" 
value="${os.monthlyIndex.indexMaxDocValueFieldsSearch}"/>
+        <property name="numberOfShards" value="${os.numberOfShards}"/>
+        <property name="numberOfReplicas" value="${os.numberOfReplicas}"/>
+        <property name="indexMappingTotalFieldsLimit" 
value="${os.indexMappingTotalFieldsLimit}"/>
+        <property name="indexMaxDocValueFieldsSearch" 
value="${os.indexMaxDocValueFieldsSearch}"/>
+        <property name="openSearchAddresses" 
value="${os.openSearchAddresses}"/>
+        <property name="fatalIllegalStateErrors" 
value="${os.fatalIllegalStateErrors}"/>
+        <property name="defaultQueryLimit" value="${os.defaultQueryLimit}"/>
+        <property name="itemsMonthlyIndexedOverride" 
value="${os.monthlyIndex.itemsMonthlyIndexedOverride}" />
         <property name="routingByType">
             <map>
             </map>
         </property>
 
-        <property name="rolloverIndices" value="${es.rollover.indices}" />
-        <property name="rolloverMaxSize" value="${es.rollover.maxSize}" />
-        <property name="rolloverMaxAge" value="${es.rollover.maxAge}" />
-        <property name="rolloverMaxDocs" value="${es.rollover.maxDocs}" />
-        <property name="rolloverIndexNumberOfShards" 
value="${es.rollover.numberOfShards}"/>
-        <property name="rolloverIndexNumberOfReplicas" 
value="${es.rollover.numberOfReplicas}"/>
-        <property name="rolloverIndexMappingTotalFieldsLimit" 
value="${es.rollover.indexMappingTotalFieldsLimit}"/>
-        <property name="rolloverIndexMaxDocValueFieldsSearch" 
value="${es.rollover.indexMaxDocValueFieldsSearch}"/>
+        <property name="rolloverIndices" value="${os.rollover.indices}" />
+        <property name="rolloverMaxSize" value="${os.rollover.maxSize}" />
+        <property name="rolloverMaxAge" value="${os.rollover.maxAge}" />
+        <property name="rolloverMaxDocs" value="${os.rollover.maxDocs}" />
+        <property name="rolloverIndexNumberOfShards" 
value="${os.rollover.numberOfShards}"/>
+        <property name="rolloverIndexNumberOfReplicas" 
value="${os.rollover.numberOfReplicas}"/>
+        <property name="rolloverIndexMappingTotalFieldsLimit" 
value="${os.rollover.indexMappingTotalFieldsLimit}"/>
+        <property name="rolloverIndexMaxDocValueFieldsSearch" 
value="${os.rollover.indexMaxDocValueFieldsSearch}"/>
 
-        <property name="minimalOpenSearchVersion" 
value="${es.minimalOpenSearchVersion}" />
-        <property name="maximalOpenSearchVersion" 
value="${es.maximalOpenSearchVersion}" />
+        <property name="minimalOpenSearchVersion" 
value="${os.minimalOpenSearchVersion}" />
+        <property name="maximalOpenSearchVersion" 
value="${os.maximalOpenSearchVersion}" />
 
-        <property name="aggregateQueryBucketSize" 
value="${es.aggregateQueryBucketSize}" />
-        <property name="aggQueryMaxResponseSizeHttp" 
value="${es.aggQueryMaxResponseSizeHttp}" />
-        <property name="aggQueryThrowOnMissingDocs" 
value="${es.aggQueryThrowOnMissingDocs}" />
-        <property name="itemTypeToRefreshPolicy" 
value="${es.itemTypeToRefreshPolicy}" />
+        <property name="aggregateQueryBucketSize" 
value="${os.aggregateQueryBucketSize}" />
+        <property name="aggQueryMaxResponseSizeHttp" 
value="${os.aggQueryMaxResponseSizeHttp}" />
+        <property name="aggQueryThrowOnMissingDocs" 
value="${os.aggQueryThrowOnMissingDocs}" />
+        <property name="itemTypeToRefreshPolicy" 
value="${os.itemTypeToRefreshPolicy}" />
 
-        <property name="clientSocketTimeout" value="${es.clientSocketTimeout}" 
/>
-        <property name="taskWaitingTimeout" value="${es.taskWaitingTimeout}" />
-        <property name="taskWaitingPollingInterval" 
value="${es.taskWaitingPollingInterval}" />
+        <property name="clientSocketTimeout" value="${os.clientSocketTimeout}" 
/>
+        <property name="taskWaitingTimeout" value="${os.taskWaitingTimeout}" />
+        <property name="taskWaitingPollingInterval" 
value="${os.taskWaitingPollingInterval}" />
 
         <property name="metricsService" ref="metricsService" />
-        <property name="useBatchingForSave" value="${es.useBatchingForSave}" />
-        <property name="useBatchingForUpdate" 
value="${es.useBatchingForUpdate}" />
-
-        <property name="username" value="${es.username}" />
-        <property name="password" value="${es.password}" />
-        <property name="sslEnable" value="${es.sslEnable}" />
-        <property name="sslTrustAllCertificates" 
value="${es.sslTrustAllCertificates}" />
-        <property name="throwExceptions" value="${es.throwExceptions}" />
-        <property name="alwaysOverwrite" value="${es.alwaysOverwrite}" />
-        <property name="logLevelRestClient" value="${es.logLevelRestClient}" />
+        <property name="useBatchingForSave" value="${os.useBatchingForSave}" />
+        <property name="useBatchingForUpdate" 
value="${os.useBatchingForUpdate}" />
+
+        <property name="username" value="${os.username}" />
+        <property name="password" value="${os.password}" />
+        <property name="sslEnable" value="${os.sslEnable}" />
+        <property name="sslTrustAllCertificates" 
value="${os.sslTrustAllCertificates}" />
+        <property name="throwExceptions" value="${os.throwExceptions}" />
+        <property name="alwaysOverwrite" value="${os.alwaysOverwrite}" />
+        <property name="logLevelRestClient" value="${os.logLevelRestClient}" />
+        <property name="minimalClusterState" value="${os.minimalClusterState}" 
/>
     </bean>
 
     <!-- We use a listener here because using the list directly for listening 
to proxies coming from the same bundle didn't seem to work -->
diff --git 
a/persistence-opensearch/core/src/main/resources/org.apache.unomi.persistence.opensearch.cfg
 
b/persistence-opensearch/core/src/main/resources/org.apache.unomi.persistence.opensearch.cfg
index e0bb5dc16..de329feec 100644
--- 
a/persistence-opensearch/core/src/main/resources/org.apache.unomi.persistence.opensearch.cfg
+++ 
b/persistence-opensearch/core/src/main/resources/org.apache.unomi.persistence.opensearch.cfg
@@ -114,3 +114,5 @@ 
useBatchingForUpdate=${org.apache.unomi.opensearch.useBatchingForUpdate:-true}
 
 # ES logging
 logLevelRestClient=${org.apache.unomi.opensearch.logLevelRestClient:-ERROR}
+
+minimalClusterState=${org.apache.unomi.opensearch.minimalClusterState:-GREEN}
diff --git 
a/persistence-spi/src/main/java/org/apache/unomi/persistence/spi/PersistenceService.java
 
b/persistence-spi/src/main/java/org/apache/unomi/persistence/spi/PersistenceService.java
index 0fe374616..48aea7f2f 100644
--- 
a/persistence-spi/src/main/java/org/apache/unomi/persistence/spi/PersistenceService.java
+++ 
b/persistence-spi/src/main/java/org/apache/unomi/persistence/spi/PersistenceService.java
@@ -27,13 +27,18 @@ import 
org.apache.unomi.persistence.spi.aggregate.BaseAggregate;
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
-import java.util.function.Consumer;
 
 /**
  * A service to provide persistence and retrieval of context server entities.
  */
 public interface PersistenceService {
 
+    /**
+     * A unique name to identify the persistence service.
+     * @return a string containing the unique name for the persistence service.
+     */
+    String getName();
+
     /**
      * Retrieves all known items of the specified class.
      * <em>WARNING</em>: this method can be quite computationally intensive 
and calling the paged version {@link #getAllItems(Class, int, int, String)} is 
preferred.
diff --git a/tools/shell-commands/pom.xml b/tools/shell-commands/pom.xml
index b867d1ae2..0232eab30 100644
--- a/tools/shell-commands/pom.xml
+++ b/tools/shell-commands/pom.xml
@@ -134,6 +134,7 @@
                             *
                         </Import-Package>
                         <Export-Package>
+                            org.apache.unomi.shell.services,
                             org.apache.unomi.shell.migration.utils,
                             org.apache.unomi.shell.migration.service,
                         </Export-Package>
diff --git 
a/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceConfiguration.java
 
b/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceConfiguration.java
index a306fd840..c7aa4154f 100644
--- 
a/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceConfiguration.java
+++ 
b/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceConfiguration.java
@@ -27,8 +27,8 @@ public @interface UnomiManagementServiceConfiguration {
 
     @AttributeDefinition(
             name = "Start Features",
-            description = "A semicolon-separated list of start features in the 
format 'key:feature1,feature2;key2:feature3'."
+            description = "An array of strings representing start features in 
the format '[\"key=feature1,feature2\", \"key2:feature3\"]."
     )
-    String startFeatures() default "";
+    String[] startFeatures() default "";
 
 }
diff --git 
a/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceImpl.java
 
b/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceImpl.java
index f97ee3038..da3c251d7 100644
--- 
a/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceImpl.java
+++ 
b/tools/shell-commands/src/main/java/org/apache/unomi/shell/services/internal/UnomiManagementServiceImpl.java
@@ -83,7 +83,8 @@ import java.util.*;
  * @see org.apache.unomi.shell.migration.MigrationService
  * @see org.apache.karaf.features.FeaturesService
  * @see org.apache.karaf.features.Feature
- */@Component(service = UnomiManagementService.class, immediate = true, 
configurationPid = "org.apache.unomi.start")
+ */
+@Component(service = UnomiManagementService.class, immediate = true, 
configurationPid = "org.apache.unomi.start")
 @Designate(ocd = UnomiManagementServiceConfiguration.class)
 public class UnomiManagementServiceImpl implements UnomiManagementService {
 
@@ -138,15 +139,14 @@ public class UnomiManagementServiceImpl implements 
UnomiManagementService {
         return featuresToInstall;
     }
 
-    private Map<String, List<String>> parseStartFeatures(String 
startFeaturesConfig) {
+    private Map<String, List<String>> parseStartFeatures(String[] 
startFeaturesConfig) {
         Map<String, List<String>> startFeatures = new HashMap<>();
-        if (startFeaturesConfig == null || startFeaturesConfig.isEmpty()) {
+        if (startFeaturesConfig == null) {
             return startFeatures;
         }
 
-        String[] entries = startFeaturesConfig.split(";");
-        for (String entry : entries) {
-            String[] parts = entry.split(":");
+        for (String entry : startFeaturesConfig) {
+            String[] parts = entry.split("=");
             if (parts.length == 2) {
                 String key = parts[0].trim();
                 List<String> features = new 
ArrayList<>(Arrays.asList(parts[1].split(",")));
diff --git a/tools/shell-commands/src/main/resources/org.apache.unomi.start.cfg 
b/tools/shell-commands/src/main/resources/org.apache.unomi.start.cfg
index a9d91958d..5ca58b03c 100644
--- a/tools/shell-commands/src/main/resources/org.apache.unomi.start.cfg
+++ b/tools/shell-commands/src/main/resources/org.apache.unomi.start.cfg
@@ -14,5 +14,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-
-startFeatures=elasticsearch:unomi-persistence-elasticsearch,unomi-services,unomi-router-karaf-feature,unomi-groovy-actions,unomi-web-applications,unomi-rest-ui,unomi-healthcheck;opensearch:unomi-persistence-opensearch,unomi-services,unomi-router-karaf-feature,unomi-groovy-actions,unomi-web-applications,unomi-rest-ui,unomi-healthcheck
+startFeatures = 
["elasticsearch=unomi-persistence-elasticsearch,unomi-services,unomi-router-karaf-feature,unomi-groovy-actions,unomi-web-applications,unomi-rest-ui,unomi-healthcheck",
 \
+                 
"opensearch=unomi-persistence-opensearch,unomi-services,unomi-router-karaf-feature,unomi-groovy-actions,unomi-web-applications,unomi-rest-ui,unomi-healthcheck"]

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