1 files changed, 104 insertions, 0 deletions
diff --git a/lib/src/main/java/org/onap/portal/bff/config/clients/KeycloakConfig.java b/lib/src/main/java/org/onap/portal/bff/config/clients/KeycloakConfig.java
new file mode 100644
index 0000000..0935a00
--- /dev/null
+++ b/lib/src/main/java/org/onap/portal/bff/config/clients/KeycloakConfig.java
@@ -0,0 +1,104 @@
+/*
+ *
+ * Copyright (c) 2022. Deutsche Telekom AG
+ *
+ * Licensed 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ *
+ */
+
+package org.onap.portal.bff.config.clients;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.util.List;
+import java.util.function.Function;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.portal.bff.config.BeansConfig;
+import org.onap.portal.bff.config.PortalBffConfig;
+import org.onap.portal.bff.exceptions.DownstreamApiProblemException;
+import org.onap.portal.bff.openapi.client_portal_keycloak.ApiClient;
+import org.onap.portal.bff.openapi.client_portal_keycloak.api.KeycloakApi;
+import org.onap.portal.bff.openapi.client_portal_keycloak.model.ErrorResponseKeycloakDto;
+import org.onap.portal.bff.openapi.server.model.ProblemApiDto;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.client.reactive.ClientHttpConnector;
+import org.springframework.web.reactive.function.client.ExchangeFilterFunction;
+import org.springframework.web.reactive.function.client.WebClient;
+
+@Slf4j
+@Configuration
+public class KeycloakConfig extends AbstractClientConfig<ErrorResponseKeycloakDto> {
+  private final ObjectMapper objectMapper;
+  private final PortalBffConfig bffConfig;
+  private final ExchangeFilterFunction oauth2ExchangeFilterFunction;
+
+  @Autowired
+  public KeycloakConfig(
+      @Qualifier(BeansConfig.OAUTH2_EXCHANGE_FILTER_FUNCTION)
+          ExchangeFilterFunction oauth2ExchangeFilterFunction,
+      ObjectMapper objectMapper,
+      PortalBffConfig bffConfig) {
+    super(ErrorResponseKeycloakDto.class);
+    this.objectMapper = objectMapper;
+    this.bffConfig = bffConfig;
+    this.oauth2ExchangeFilterFunction = oauth2ExchangeFilterFunction;
+  }
+
+  @Bean
+  public KeycloakApi keycloakApi(WebClient.Builder webClientBuilder) {
+    return constructApiClient(webClientBuilder, KeycloakApi::new);
+  }
+
+  private <T> T constructApiClient(
+      WebClient.Builder webClientBuilder, Function<ApiClient, T> apiConstructor) {
+    final ApiClient apiClient =
+        new ApiClient(
+            getWebClient(webClientBuilder, List.of(oauth2ExchangeFilterFunction)),
+            objectMapper,
+            objectMapper.getDateFormat());
+
+    // Extract service name and version from BasePath
+    String urlBasePathPrefix =
+        String.format("%s/auth/admin/realms/%s", bffConfig.getKeycloakUrl(), bffConfig.getRealm());
+
+    return apiConstructor.apply(apiClient.setBasePath(urlBasePathPrefix));
+  }
+
+  @Override
+  protected DownstreamApiProblemException mapException(
+      ErrorResponseKeycloakDto errorResponse, HttpStatus httpStatus) {
+    String errorDetail =
+        errorResponse.getErrorMessage() != null
+            ? errorResponse.getErrorMessage()
+            : errorResponse.getError();
+
+    return DownstreamApiProblemException.builder()
+        .title(httpStatus.toString())
+        .detail(errorDetail)
+        .downstreamSystem(ProblemApiDto.DownstreamSystemEnum.KEYCLOAK.toString())
+        .downstreamMessageId("not set by downstream system")
+        .downstreamStatus(httpStatus.value())
+        .build();
+  }
+
+  @Override
+  protected ClientHttpConnector getClientHttpConnector() {
+    return null;
+  }
+}