Ignore unknown json properties from newer Keycloak versions

CHANGELOG.md

@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Added
 - Publish charts with github pages [#941](https://github.com/adorsys/keycloak-config-cli/issues/941)
 - Support for Keycloak 26.1
+- Ignore unknown json properties from newer Keycloak versions  [#1265](https://github.com/adorsys/keycloak-config-cli/issues/1265)
 
 ### Fixed
 -  Fix Initial Credentials Causes Update [819](https://github.com/adorsys/keycloak-config-cli/issues/819)

src/main/java/de/adorsys/keycloak/config/provider/KeycloakProvider.java

@@ -20,6 +20,8 @@
 
 package de.adorsys.keycloak.config.provider;
 
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import de.adorsys.keycloak.config.exception.KeycloakProviderException;
 import de.adorsys.keycloak.config.properties.KeycloakConfigProperties;
 import de.adorsys.keycloak.config.util.ResteasyUtil;
@@ -28,6 +30,7 @@
 import org.jboss.resteasy.client.jaxrs.ResteasyClient;
 import org.jboss.resteasy.client.jaxrs.ResteasyWebTarget;
 import org.jboss.resteasy.client.jaxrs.internal.BasicAuthentication;
+import org.jboss.resteasy.plugins.providers.jackson.ResteasyJackson2Provider;
 import org.keycloak.admin.client.Keycloak;
 import org.keycloak.admin.client.KeycloakBuilder;
 import org.slf4j.Logger;
@@ -44,6 +47,7 @@
 import jakarta.ws.rs.WebApplicationException;
 import jakarta.ws.rs.client.Entity;
 import jakarta.ws.rs.core.Form;
+import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.Response;
 
 /**
@@ -76,6 +80,7 @@ private KeycloakProvider(KeycloakConfigProperties properties) {
     public Keycloak getInstance() {
         if (keycloak == null || resteasyClient == null || keycloak.isClosed() || resteasyClient.isClosed()) {
             resteasyClient = resteasyClientSupplier.get();
+            resteasyClient.register(JacksonProvider.class);
             keycloak = createKeycloak();
 
             checkServerVersion();
@@ -233,4 +238,20 @@ private void logout() {
     public boolean isClosed() {
         return keycloak == null || keycloak.isClosed();
     }
+
+    /*
+    Similar to
+    https://github.com/keycloak/keycloak-client/blob/0ca751f23022c9295f2e7dc9fa72725e4380f4ed/admin-client/src/main/java/org/keycloak/admin/client/JacksonProvider.java
+    but without objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL).
+    JsonInclude.Include.NON_NULL will cause errors with some unit tests
+    in ImportClientsIT.
+     */
+    public static class JacksonProvider extends ResteasyJackson2Provider {
+
+        public ObjectMapper locateMapper(Class<?> type, MediaType mediaType) {
+            ObjectMapper objectMapper = super.locateMapper(type, mediaType);
+            objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+            return objectMapper;
+        }
+    }
 }