Upload preferences

Issue-ID: PORTAL-1082

Signed-off-by: Fiete Ostkamp <Fiete.Ostkamp@telekom.de>
Change-Id: I265e0c8be481a279347aa653acc483c5017c996d

43 files changed, 2620 insertions, 0 deletions

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..c8de995
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,4 @@
+# Ignore everything
+*
+# ... but the build jar
+!/app/build/libs
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2d8e73e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,39 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+gradle.properties
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+.attach_pid*
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..08ba08e
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,5 @@
+FROM onap-repo/openjdk:17
+ARG JAR_FILE=/app/build/libs/app-*.jar
+COPY ${JAR_FILE} app.jar
+EXPOSE 9080
+ENTRYPOINT [ "java","-jar","app.jar" ]
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..15bc29d
--- /dev/null
+++ b/README.md
@@ -0,0 +1,42 @@
+# Portal-prefs
+This microservice manages the user specific config for the `portal-ui` frontend application. It is a Spring Boot application that is build upon a MongoDB and Webflux.
+
+## Build
+```sh
+./gradlew build
+```
+
+## Run
+```sh
+./gradlew bootRun
+```
+
+## Test
+```sh
+./gradlew test                                                                # run all tests
+./gradlew test --tests GetTileIntegrationTest                                 # run all tests in file
+./gradlew test --tests GetTileIntegrationTest.thatTileCanBeRetrieved          # run individual test in file
+./gradlew test --tests GetTileIntegrationTest.thatTileCanBeRetrieved --debug  # run individual test in file with debug enabled
+```
+
+## Development
+You can run the service locally for evaluation or development purposes using the provided `docker-compose.yml` file in the development folder. This will launch a Keycloak, a Postgres and a Mongo db in the background.
+
+**Prerequisites:** Running local docker daemon and a docker cli
+
+To start the service execute the `run.sh` in the development folder:
+```sh
+development/run.sh
+```
+
+Example request against the portal-prefs service can be run in your preferred IDE with the `request.http` file from the development folder.
+
+You can access the Keycloak UI via browser.  
+URL: http://localhost:8080  
+**username:** admin  
+**password:** password  
+
+To stop the portal-prefs service, Keycloak and the databases run:
+```sh
+development/stop.sh
+```
diff --git a/app/LICENSE b/app/LICENSE
new file mode 100644
index 0000000..abe3069
--- /dev/null
+++ b/app/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
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+
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+   6. Trademarks. This License does not grant permission to use the trade
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+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
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+      To apply the Apache License to your work, attach the following
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+   Copyright 2021 TNAP / development / system-team
+
+   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,
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diff --git a/app/LICENSE_HEADER b/app/LICENSE_HEADER
new file mode 100644
index 0000000..66e028a
--- /dev/null
+++ b/app/LICENSE_HEADER
@@ -0,0 +1,20 @@
+/*
+ *
+ * Copyright (c) ${year}. 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
+ *
+ *
+ */
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..1551d9e
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,109 @@
+plugins {
+	id 'java'
+	id 'idea'
+	id 'application'
+	id 'io.spring.dependency-management'
+	id 'org.springframework.boot'
+	id 'jacoco'
+	id 'org.sonarqube'
+	id 'com.gorylenko.gradle-git-properties'
+}
+
+group = 'org.onap'
+version = '0.1.1'
+sourceCompatibility = '17'
+targetCompatibility = '17'
+
+application {
+    mainClass = 'org.onap.portal.prefs.PortalPrefsApplication'
+}
+
+configurations {
+	compileOnly {
+		extendsFrom annotationProcessor
+	}
+
+	// avoid "LoggerFactory is not a Logback LoggerContext but Logback is on the classpath" error
+    all*.exclude module : 'logback-classic'
+}
+
+repositories {
+	mavenCentral()
+	maven {
+			url "https://plugins.gradle.org/m2/"
+	}
+}
+
+ext {
+        vavrVersion = '0.10.4'
+        problemVersion = '0.27.1'
+        logstashLogbackVersion = '7.2'
+		embedMongoVersion = '3.2.8'
+		embedMongoIntegrationVersion = '1.1.0-spring27x'
+        springCloudWiremockVersion = '3.1.0'
+}
+
+dependencies {
+	implementation project(':openapi')
+	implementation 'org.springframework.boot:spring-boot-starter-actuator'
+	implementation 'org.springframework.boot:spring-boot-starter-data-mongodb-reactive'
+	implementation 'org.springframework.boot:spring-boot-starter-oauth2-resource-server'
+	implementation 'org.springframework.boot:spring-boot-starter-security'
+	implementation 'org.springframework.boot:spring-boot-starter-webflux'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation "io.vavr:vavr:$vavrVersion"
+	implementation "org.zalando:problem:$problemVersion"
+	implementation "net.logstash.logback:logstash-logback-encoder:$logstashLogbackVersion"
+
+	compileOnly 'org.projectlombok:lombok'
+
+	developmentOnly 'org.springframework.boot:spring-boot-devtools'
+
+	annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
+	annotationProcessor 'org.projectlombok:lombok'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'io.projectreactor:reactor-test'
+	testImplementation 'io.rest-assured:rest-assured'
+	testImplementation "org.springframework.cloud:spring-cloud-contract-wiremock:$springCloudWiremockVersion"
+	testImplementation "de.flapdoodle.embed:de.flapdoodle.embed.mongo:$embedMongoVersion"
+	testImplementation "de.flapdoodle.embed:de.flapdoodle.embed.mongo.spring:$embedMongoIntegrationVersion"
+	testCompileOnly 'org.projectlombok:lombok'
+	testAnnotationProcessor 'org.projectlombok:lombok'
+}
+
+test {
+	useJUnitPlatform()
+	finalizedBy(jacocoTestReport)
+}
+
+jacocoTestReport {
+	reports {
+		xml.enabled true
+	}
+}
+
+sonarqube {
+	properties {
+		property "sonar.projectKey", "tnap.SONAR.portal.portal-prefs"
+		property "sonar.projectName", "portal-prefs"
+	}
+}
+
+configurations.implementation.setCanBeResolved(true)
+
+// avoid generating X.X.X-plain.jar
+jar {
+    enabled = false
+}
+
+springBoot {
+	buildInfo {
+		properties {
+			artifact = "onap-portal-prefs"
+			version = rootProject.file('version').text.trim()
+			group = "org.onap"
+			name = "Portal user preferences service"
+		}
+	}
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/PortalPrefsApplication.java b/app/src/main/java/org/onap/portal/prefs/PortalPrefsApplication.java
new file mode 100644
index 0000000..092c533
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/PortalPrefsApplication.java
@@ -0,0 +1,37 @@
+/*
+ *
+ * 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.prefs;
+
+import org.onap.portal.prefs.configuration.PortalPrefsConfig;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+
+@EnableConfigurationProperties(PortalPrefsConfig.class)
+@SpringBootApplication
+public class PortalPrefsApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(PortalPrefsApplication.class, args);
+	}
+
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/configuration/BeansConfig.java b/app/src/main/java/org/onap/portal/prefs/configuration/BeansConfig.java
new file mode 100644
index 0000000..77ef7f0
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/configuration/BeansConfig.java
@@ -0,0 +1,35 @@
+/*
+ *
+ * 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.prefs.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.time.Clock;
+
+@Configuration
+public class BeansConfig {
+  @Bean
+  Clock clock() {
+    return Clock.systemUTC();
+  }
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/configuration/LogInterceptor.java b/app/src/main/java/org/onap/portal/prefs/configuration/LogInterceptor.java
new file mode 100644
index 0000000..b653fe3
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/configuration/LogInterceptor.java
@@ -0,0 +1,59 @@
+/*
+ *
+ * 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.prefs.configuration;
+
+import org.onap.portal.prefs.util.Logger;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.reactive.ServerWebExchangeContextFilter;
+import org.springframework.web.server.ServerWebExchange;
+import org.springframework.web.server.WebFilter;
+import org.springframework.web.server.WebFilterChain;
+import reactor.core.publisher.Mono;
+
+import java.util.List;
+
+@Component
+public class LogInterceptor implements WebFilter {
+  public static final String EXCHANGE_CONTEXT_ATTRIBUTE =
+      ServerWebExchangeContextFilter.class.getName() + ".EXCHANGE_CONTEXT";
+
+  public static final String X_REQUEST_ID = "X-Request-Id";
+
+  @Override
+  public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
+    List<String> xRequestIdList = exchange.getRequest().getHeaders().get(X_REQUEST_ID);
+    if (xRequestIdList != null && !xRequestIdList.isEmpty()) {
+      String xRequestId = xRequestIdList.get(0);
+      Logger.requestLog(
+          xRequestId, exchange.getRequest().getMethod(), exchange.getRequest().getURI());
+      exchange.getResponse().getHeaders().add(X_REQUEST_ID, xRequestId);
+      exchange.getResponse().beforeCommit(() -> {
+        Logger.responseLog(xRequestId,exchange.getResponse().getStatusCode());
+        return Mono.empty();
+      });
+    }
+
+    return chain
+        .filter(exchange)
+        .contextWrite(cxt -> cxt.put(EXCHANGE_CONTEXT_ATTRIBUTE, exchange));
+  }
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/configuration/PortalPrefsConfig.java b/app/src/main/java/org/onap/portal/prefs/configuration/PortalPrefsConfig.java
new file mode 100644
index 0000000..3c03673
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/configuration/PortalPrefsConfig.java
@@ -0,0 +1,39 @@
+/*
+ *
+ * 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.prefs.configuration;
+
+import javax.validation.constraints.NotBlank;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConstructorBinding;
+
+import lombok.Data;
+
+@Data
+@ConstructorBinding
+@ConfigurationProperties("portal-prefs")
+public class PortalPrefsConfig {
+
+    @NotBlank
+    private final String realm;
+    
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/configuration/SecurityConfig.java b/app/src/main/java/org/onap/portal/prefs/configuration/SecurityConfig.java
new file mode 100644
index 0000000..531e90b
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/configuration/SecurityConfig.java
@@ -0,0 +1,53 @@
+/*
+ *
+ * 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.prefs.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpMethod;
+import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
+import org.springframework.security.config.web.server.ServerHttpSecurity;
+import org.springframework.security.web.server.SecurityWebFilterChain;
+
+/**
+ * Configures the access control of the API endpoints.
+ */
+// https://hantsy.github.io/spring-reactive-sample/security/config.html
+@EnableWebFluxSecurity
+@Configuration
+public class SecurityConfig {
+
+  @Bean
+  public SecurityWebFilterChain springSecurityWebFilterChain(ServerHttpSecurity http) {
+    return http.httpBasic().disable()
+        .formLogin().disable()
+        .csrf().disable()
+        .cors()
+        .and()
+        .authorizeExchange()
+        .pathMatchers(HttpMethod.GET, "/actuator/**").permitAll()
+        .anyExchange().authenticated()
+        .and()
+        .oauth2ResourceServer(ServerHttpSecurity.OAuth2ResourceServerSpec::jwt)
+        .build();
+  }
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/controller/PreferencesController.java b/app/src/main/java/org/onap/portal/prefs/controller/PreferencesController.java
new file mode 100644
index 0000000..584b3b4
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/controller/PreferencesController.java
@@ -0,0 +1,88 @@
+/*
+ *
+ * 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.prefs.controller;
+
+
+import javax.validation.Valid;
+
+import org.onap.portal.prefs.exception.ProblemException;
+import org.onap.portal.prefs.openapi.api.PreferencesApi;
+import org.onap.portal.prefs.openapi.model.Preferences;
+import org.onap.portal.prefs.services.PreferencesService;
+import org.onap.portal.prefs.util.IdTokenExchange;
+import org.onap.portal.prefs.util.Logger;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ServerWebExchange;
+
+import reactor.core.publisher.Mono;
+
+@RestController
+public class PreferencesController implements PreferencesApi {
+
+
+  private final PreferencesService preferencesService;
+
+  public PreferencesController(PreferencesService getPreferences){
+    this.preferencesService = getPreferences;
+  }
+
+  @Override
+  public Mono<ResponseEntity<Preferences>> getPreferences(String xRequestId, ServerWebExchange exchange) {
+    return IdTokenExchange
+      .extractUserId(exchange)
+      .flatMap(userid ->
+        preferencesService.getPreferences(userid)
+          .map(ResponseEntity::ok))
+          .onErrorResume(ProblemException.class, ex -> {
+              Logger.errorLog(xRequestId,"user preferences", null, "portal-prefs" );
+              return Mono.error(ex);
+          })
+      .onErrorReturn(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+
+  }
+
+  @Override
+  public Mono<ResponseEntity<Preferences>> savePreferences(String xRequestId, @Valid Mono<Preferences> preferences,
+                                                           ServerWebExchange exchange) {
+  return IdTokenExchange
+    .extractUserId(exchange)
+    .flatMap(userid ->
+      preferences
+        .flatMap( pref ->
+          preferencesService
+            .savePreferences(xRequestId, userid, pref)))
+            .map( ResponseEntity::ok)
+        .onErrorResume(ProblemException.class, ex -> {
+          Logger.errorLog(xRequestId,"user preferences", null, "portal-prefs" );
+          return Mono.error(ex);
+        })
+    .onErrorReturn(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+  }
+
+  @Override
+  public Mono<ResponseEntity<Preferences>> updatePreferences(String xRequestId, @Valid Mono<Preferences> preferences, ServerWebExchange exchange) {
+    return savePreferences(xRequestId, preferences, exchange);
+  }
+
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/entities/PreferencesDto.java b/app/src/main/java/org/onap/portal/prefs/entities/PreferencesDto.java
new file mode 100644
index 0000000..45616a9
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/entities/PreferencesDto.java
@@ -0,0 +1,39 @@
+/*
+ *
+ * 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.prefs.entities;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document
+@Getter
+@Setter
+public class PreferencesDto {
+  @Id
+  private String userId;
+
+  private Object properties;
+
+}
+
diff --git a/app/src/main/java/org/onap/portal/prefs/exception/ProblemException.java b/app/src/main/java/org/onap/portal/prefs/exception/ProblemException.java
new file mode 100644
index 0000000..b9d2a3d
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/exception/ProblemException.java
@@ -0,0 +1,53 @@
+/*
+ *
+ * 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.prefs.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import org.zalando.problem.AbstractThrowableProblem;
+import org.zalando.problem.Problem;
+import org.zalando.problem.Status;
+import org.zalando.problem.StatusType;
+
+import java.net.URI;
+
+/** The default portal-prefs exception */
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(callSuper = true)
+public class ProblemException extends AbstractThrowableProblem {
+  @Builder.Default private final URI type = Problem.DEFAULT_TYPE;
+
+  @Builder.Default private final String title = "Bad preferences error";
+
+  @Builder.Default private final StatusType status = Status.BAD_REQUEST;
+
+  @Builder.Default private final String detail = "Please add more details here";
+
+  @Builder.Default private final URI instance = null;
+
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/repository/PreferencesRepository.java b/app/src/main/java/org/onap/portal/prefs/repository/PreferencesRepository.java
new file mode 100644
index 0000000..461ee1d
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/repository/PreferencesRepository.java
@@ -0,0 +1,28 @@
+/*
+ *
+ * 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.prefs.repository;
+
+import org.onap.portal.prefs.entities.PreferencesDto;
+import org.springframework.data.mongodb.repository.ReactiveMongoRepository;
+
+public interface PreferencesRepository extends ReactiveMongoRepository<PreferencesDto, String> {
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/services/PreferencesService.java b/app/src/main/java/org/onap/portal/prefs/services/PreferencesService.java
new file mode 100644
index 0000000..f96dfea
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/services/PreferencesService.java
@@ -0,0 +1,80 @@
+/*
+ *
+ * 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.prefs.services;
+
+import org.onap.portal.prefs.entities.PreferencesDto;
+import org.onap.portal.prefs.exception.ProblemException;
+import org.onap.portal.prefs.openapi.model.Preferences;
+import org.onap.portal.prefs.repository.PreferencesRepository;
+import org.onap.portal.prefs.util.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import reactor.core.publisher.Mono;
+
+@Service
+public class PreferencesService {
+
+  @Autowired
+  private PreferencesRepository repository;
+
+  public Mono<Preferences> getPreferences(String userId){
+    return repository
+      .findById(userId)
+      .switchIfEmpty(defaultPreferences())
+      .map(this::toPreferences);
+  }
+
+  public Mono<Preferences> savePreferences( String xRequestId, String userId, Preferences preferences){
+
+    var preferencesDto = new PreferencesDto();
+    preferencesDto.setUserId(userId);
+    preferencesDto.setProperties(preferences.getProperties());
+
+    return repository
+      .save(preferencesDto)
+      .map(this::toPreferences)  
+      .onErrorResume(ProblemException.class, ex -> {
+        Logger.errorLog(xRequestId,"user prefrences", userId, "portal-prefs" );
+        return Mono.error(ex);
+      });
+
+  }
+
+  private Preferences toPreferences(PreferencesDto preferencesDto) {
+    var preferences = new Preferences();
+    preferences.setProperties(preferencesDto.getProperties());
+    return preferences; 
+  }
+
+  /**
+   * Get a Preferences object that is initialised with an empty string.
+   * This is a) for convenience to not handle 404 on the consuming side and
+   * b) for security reasons
+   * @return PreferencesDto
+   */
+  private Mono<PreferencesDto> defaultPreferences() {
+    var preferencesDto = new PreferencesDto();
+    preferencesDto.setProperties("");
+    return Mono.just(preferencesDto);
+  }
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/util/IdTokenExchange.java b/app/src/main/java/org/onap/portal/prefs/util/IdTokenExchange.java
new file mode 100644
index 0000000..20f1581
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/util/IdTokenExchange.java
@@ -0,0 +1,91 @@
+/*
+ *
+ * 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.prefs.util;
+
+import com.nimbusds.jwt.JWTParser;
+import io.vavr.control.Option;
+import io.vavr.control.Try;
+import org.springframework.web.server.ServerWebExchange;
+import org.zalando.problem.Problem;
+import org.zalando.problem.Status;
+import reactor.core.publisher.Mono;
+
+/**
+ * Represents a function that handles the <a href="https://jwt.io/introduction">JWT</a> identity token.
+ * Use this to check if the incoming requests are authorized to call the given endpoint
+ */
+
+public final class IdTokenExchange {
+
+  public static final String X_AUTH_IDENTITY_HEADER = "X-Auth-Identity";
+  public static final String JWT_CLAIM_USERID = "sub";
+
+  private IdTokenExchange(){
+
+  }
+
+  /**
+   * Extract the identity header from the given {@link ServerWebExchange}.
+   * @param exchange the ServerWebExchange that contains information about the incoming request
+   * @return the identity header in the form of <code>Bearer {@literal <Token>}<c/ode>
+   */
+  private static Mono<String> extractIdentityHeader(ServerWebExchange exchange) {
+    return io.vavr.collection.List.ofAll(
+            exchange.getRequest().getHeaders().getOrEmpty(X_AUTH_IDENTITY_HEADER))
+        .headOption()
+        .map(Mono::just)
+        .getOrElse(Mono.error(Problem.valueOf(Status.FORBIDDEN, "ID token is missing")));
+  }
+
+    /**
+   * Extract the identity token from the given {@link ServerWebExchange}.
+   * @see <a href="https://openid.net/specs/openid-connect-core-1_0.html#IDToken">OpenId Connect ID Token</a>
+   * @param exchange the ServerWebExchange that contains information about the incoming request
+   * @return the identity token that contains user roles
+   */
+  private static Mono<String> extractIdToken(ServerWebExchange exchange) {
+    return extractIdentityHeader(exchange)
+        .map(identityHeader -> identityHeader.replace("Bearer ", ""));
+  }
+
+  /**
+   * Extract the <code>userId</code> from the given {@link ServerWebExchange}
+   * @param exchange the ServerWebExchange that contains information about the incoming request
+   * @return the id of the user
+   */
+  public static Mono<String> extractUserId(ServerWebExchange exchange) {
+     return extractIdToken(exchange)
+         .flatMap(
+             idToken ->
+                 Try.of(() -> JWTParser.parse(idToken))
+                     .mapTry(jwt -> Option.of(jwt.getJWTClaimsSet()))
+                     .map(
+                         optionJwtClaimSet ->
+                             optionJwtClaimSet
+                                 .flatMap(
+                                     jwtClaimSet ->
+                                         Option.of(jwtClaimSet.getClaim(JWT_CLAIM_USERID)))
+                                 .map(String.class::cast)
+                     .map( Mono::just).get())
+                     .getOrElseGet(Mono::error));
+  }
+}
diff --git a/app/src/main/java/org/onap/portal/prefs/util/Logger.java b/app/src/main/java/org/onap/portal/prefs/util/Logger.java
new file mode 100644
index 0000000..4f4ac6c
--- /dev/null
+++ b/app/src/main/java/org/onap/portal/prefs/util/Logger.java
@@ -0,0 +1,58 @@
+/*
+ *
+ * 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.prefs.util;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+
+import java.net.URI;
+
+@Slf4j
+public class Logger {
+
+  private Logger(){}
+
+  public static void requestLog(String xRequestId, HttpMethod methode, URI path) {
+    log.info("Portal-prefs - request - X-Request-Id {} {} {}", xRequestId, methode, path);
+  }
+
+  public static void responseLog(String xRequestId, HttpStatus code) {
+    log.info("Portal-prefs - response - X-Request-Id {} {}", xRequestId, code);
+  }
+
+  public static void errorLog(String xRequestId, String msg, String id, String app) {
+    log.info(
+        "Portal-prefs - error - X-Request-Id {} {} {} not found in {}", xRequestId, msg, id, app);
+  }
+
+  public static void errorLog(
+      String xRequestId, String msg, String id, String app, String errorDetails) {
+    log.info(
+        "Portal-prefs - error - X-Request-Id {} {} {} not found in {} error message: {}",
+        xRequestId,
+        msg,
+        id,
+        app,
+        errorDetails);
+  }
+}
diff --git a/app/src/main/resources/application-local.yml b/app/src/main/resources/application-local.yml
new file mode 100644
index 0000000..71fe8db
--- /dev/null
+++ b/app/src/main/resources/application-local.yml
@@ -0,0 +1,39 @@
+server:
+    port: 9001
+    address: 0.0.0.0
+
+spring:
+  jackson:
+    serialization:
+      # needed for serializing objects of type object
+      FAIL_ON_EMPTY_BEANS: false
+  security:
+    oauth2:
+      resourceserver:
+        jwt:
+          jwk-set-uri: http://localhost:8080/auth/realms/ONAP/protocol/openid-connect/certs #Keycloak Endpoint
+  data:
+    mongodb:
+      database: portal_prefs
+      host: localhost
+      port: 27017
+      username: root
+      password: password
+
+portal-prefs:
+    realm: ONAP
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+  info:
+    build:
+      enabled: true
+    env:
+      enabled: true
+    git:
+      enabled: true
+    java:
+      enabled: true
diff --git a/app/src/main/resources/application.yml b/app/src/main/resources/application.yml
new file mode 100644
index 0000000..eb5b313
--- /dev/null
+++ b/app/src/main/resources/application.yml
@@ -0,0 +1,39 @@
+server:
+    port: 9001
+    address: 0.0.0.0
+
+spring:
+  jackson:
+    serialization:
+      # needed for serializing objects of type object
+      FAIL_ON_EMPTY_BEANS: false
+  security:
+    oauth2:
+      resourceserver:
+        jwt:
+          jwk-set-uri: ${KEYCLOAK_URL}/auth/realms/${KEYCLOAK_REALM}/protocol/openid-connect/certs #Keycloak Endpoint
+  data:
+    mongodb:
+      database: ${PORTALPREFS_DATABASE}
+      host: ${PORTALPREFS_HOST}
+      port: ${PORTALPREFS_PORT}
+      username: ${PORTALPREFS_USERNAME}
+      password: ${PORTALPREFS_PASSWORD}
+
+portal-prefs:
+    realm: ${KEYCLOAK_REALM}
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+  info:
+    build:
+      enabled: true
+    env:
+      enabled: true
+    git:
+      enabled: true
+    java:
+      enabled: true
diff --git a/app/src/main/resources/logback-spring.xml b/app/src/main/resources/logback-spring.xml
new file mode 100644
index 0000000..05503bc
--- /dev/null
+++ b/app/src/main/resources/logback-spring.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true">
+    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
+        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
+            <level>${LOGBACK_LEVEL:-info}</level>
+        </filter>
+        <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
+    </appender>
+
+    <root level="all">
+        <appender-ref ref="stdout"/>
+    </root>
+</configuration>
diff --git a/app/src/test/java/org/onap/portal/prefs/BaseIntegrationTest.java b/app/src/test/java/org/onap/portal/prefs/BaseIntegrationTest.java
new file mode 100644
index 0000000..7852c41
--- /dev/null
+++ b/app/src/test/java/org/onap/portal/prefs/BaseIntegrationTest.java
@@ -0,0 +1,163 @@
+/*
+ *
+ * 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.prefs;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.github.tomakehurst.wiremock.client.WireMock;
+import com.nimbusds.jose.jwk.JWKSet;
+import org.onap.portal.prefs.util.IdTokenExchange;
+import org.onap.portal.prefs.configuration.PortalPrefsConfig;
+import io.restassured.RestAssured;
+import io.restassured.filter.log.RequestLoggingFilter;
+import io.restassured.filter.log.ResponseLoggingFilter;
+import io.restassured.specification.RequestSpecification;
+import io.vavr.collection.List;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.cloud.contract.wiremock.AutoConfigureWireMock;
+import org.springframework.http.MediaType;
+
+import java.util.UUID;
+
+/** Base class for all tests that has the common config including port, realm, logging and auth. */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureWireMock(port = 0)
+public abstract class BaseIntegrationTest {
+
+//  @TestConfiguration
+//  public static class Config {
+//    @Bean
+//    WireMockConfigurationCustomizer optionsCustomizer() {
+//      return options -> options.extensions(new ResponseTemplateTransformer(true));
+//    }
+//  }
+
+  @LocalServerPort protected int port;
+  @Value("${portal-prefs.realm}")
+  protected String realm;
+
+  @Autowired protected ObjectMapper objectMapper;
+  @Autowired private TokenGenerator tokenGenerator;
+  @Autowired protected PortalPrefsConfig portalPrefsConfig;
+
+  @BeforeAll
+  public static void setup() {
+    RestAssured.filters(new RequestLoggingFilter(), new ResponseLoggingFilter());
+  }
+
+  /** Mocks the OIDC auth flow. */
+  @BeforeEach
+  public void mockAuth() {
+    WireMock.reset();
+
+    WireMock.stubFor(
+        WireMock.get(
+                WireMock.urlMatching(
+                    String.format("/auth/realms/%s/protocol/openid-connect/certs", realm)))
+            .willReturn(
+                WireMock.aResponse()
+                    .withHeader("Content-Type", JWKSet.MIME_TYPE)
+                    .withBody(tokenGenerator.getJwkSet().toString())));
+
+    final TokenGenerator.TokenGeneratorConfig config =
+        TokenGenerator.TokenGeneratorConfig.builder().port(port).realm(realm).sub("test-user").build();
+
+    WireMock.stubFor(
+        WireMock.post(
+                WireMock.urlMatching(
+                    String.format("/auth/realms/%s/protocol/openid-connect/token", realm)))
+            .withBasicAuth("test", "test")
+            .withRequestBody(WireMock.containing("grant_type=client_credentials"))
+            .willReturn(
+                WireMock.aResponse()
+                    .withHeader("Content-Type", MediaType.APPLICATION_JSON_VALUE)
+                    .withBody(
+                        objectMapper
+                            .createObjectNode()
+                            .put("token_type", "bearer")
+                            .put("access_token", tokenGenerator.generateToken(config))
+                            .put("expires_in", config.getExpireIn().getSeconds())
+                            .put("refresh_token", tokenGenerator.generateToken(config))
+                            .put("refresh_expires_in", config.getExpireIn().getSeconds())
+                            .put("not-before-policy", 0)
+                            .put("session_state", UUID.randomUUID().toString())
+                            .put("scope", "email profile")
+                            .toString())));
+  }
+
+    /**
+   * Builds an OAuth2 configuration including the roles, port and realm. This config can be used to
+   * generate OAuth2 access tokens.
+   *
+   * @param sub the userId
+   * @param roles the roles used for RBAC
+   * @return the OAuth2 configuration
+   */
+  protected TokenGenerator.TokenGeneratorConfig getTokenGeneratorConfig(String sub, List<String> roles) {
+    return TokenGenerator.TokenGeneratorConfig.builder()
+        .port(port)
+        .sub(sub)
+        .realm(realm)
+        .roles(roles)
+        .build();
+  }
+
+  /** Get a RequestSpecification that does not have an Identity header. */
+  protected RequestSpecification unauthenticatedRequestSpecification() {
+    return RestAssured.given().port(port);
+  }
+
+  /**
+   * Object to store common attributes of requests that are going to be made. Adds an Identity
+   * header for the <code>onap_admin</code> role to the request.
+   * @return the definition of the incoming request (northbound)
+   */
+  protected RequestSpecification requestSpecification() {
+    final String idToken = tokenGenerator.generateToken(getTokenGeneratorConfig("test-user", List.of("foo")));
+
+    return unauthenticatedRequestSpecification()
+        .auth()
+        .preemptive()
+        .oauth2(idToken)
+        .header(IdTokenExchange.X_AUTH_IDENTITY_HEADER, "Bearer " + idToken);
+  }
+
+  /**
+   * Object to store common attributes of requests that are going to be made. Adds an Identity
+   * header for the <code>onap_admin</code> role to the request.
+   * @param userId the userId that should be contained in the incoming request
+   * @return the definition of the incoming request (northbound)
+   */
+  protected RequestSpecification requestSpecification(String userId) {
+    final String idToken = tokenGenerator.generateToken(getTokenGeneratorConfig(userId, List.of("foo")));
+
+    return unauthenticatedRequestSpecification()
+        .auth()
+        .preemptive()
+        .oauth2(idToken)
+        .header(IdTokenExchange.X_AUTH_IDENTITY_HEADER, "Bearer " + idToken);
+  }
+}
diff --git a/app/src/test/java/org/onap/portal/prefs/TokenGenerator.java b/app/src/test/java/org/onap/portal/prefs/TokenGenerator.java
new file mode 100644
index 0000000..6883064
--- /dev/null
+++ b/app/src/test/java/org/onap/portal/prefs/TokenGenerator.java
@@ -0,0 +1,130 @@
+/*
+ *
+ * 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.prefs;
+
+import java.time.Clock;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Date;
+import java.util.UUID;
+
+import com.nimbusds.jose.JOSEObjectType;
+import com.nimbusds.jose.JWSAlgorithm;
+import com.nimbusds.jose.JWSHeader;
+import com.nimbusds.jose.JWSSigner;
+import com.nimbusds.jose.crypto.RSASSASigner;
+import com.nimbusds.jose.jwk.JWKSet;
+import com.nimbusds.jose.jwk.KeyUse;
+import com.nimbusds.jose.jwk.RSAKey;
+import com.nimbusds.jose.jwk.gen.RSAKeyGenerator;
+import com.nimbusds.jwt.JWTClaimsSet;
+import com.nimbusds.jwt.SignedJWT;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import io.vavr.collection.List;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NonNull;
+
+@Component
+public class TokenGenerator {
+
+  private static final String ROLES_CLAIM = "roles";
+  private static final String USERID_CLAIM = "sub";
+
+  private final Clock clock;
+  private final RSAKey jwk;
+  private final JWKSet jwkSet;
+  private final JWSSigner signer;
+
+  @Autowired
+  public TokenGenerator(Clock clock) {
+    try {
+      this.clock = clock;
+      jwk =
+          new RSAKeyGenerator(2048)
+              .keyUse(KeyUse.SIGNATURE)
+              .keyID(UUID.randomUUID().toString())
+              .generate();
+      jwkSet = new JWKSet(jwk);
+      signer = new RSASSASigner(jwk);
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  public JWKSet getJwkSet() {
+    return jwkSet;
+  }
+
+  public String generateToken(TokenGeneratorConfig config) {
+    final Instant iat = clock.instant();
+    final Instant exp = iat.plus(config.expireIn);
+
+    final JWTClaimsSet claims =
+        new JWTClaimsSet.Builder()
+            .jwtID(UUID.randomUUID().toString())
+            .subject(UUID.randomUUID().toString())
+            .issuer(config.issuer())
+            .issueTime(Date.from(iat))
+            .expirationTime(Date.from(exp))
+            .claim(ROLES_CLAIM, config.getRoles())
+            .claim(USERID_CLAIM, config.getSub())
+            .build();
+
+    final SignedJWT jwt =
+        new SignedJWT(
+            new JWSHeader.Builder(JWSAlgorithm.RS256)
+                .keyID(jwk.getKeyID())
+                .type(JOSEObjectType.JWT)
+                .build(),
+            claims);
+
+    try {
+      jwt.sign(signer);
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+
+    return jwt.serialize();
+  }
+
+  @Getter
+  @Builder
+  public static class TokenGeneratorConfig {
+    private final int port;
+
+    @NonNull private final String sub;
+
+    @NonNull private final String realm;
+
+    @NonNull @Builder.Default private final Duration expireIn = Duration.ofMinutes(5);
+
+    @Builder.Default private final List<String> roles = List.empty();
+
+    public String issuer() {
+      return String.format("http://localhost:%d/auth/realms/%s", port, realm);
+    }
+  }
+}
diff --git a/app/src/test/java/org/onap/portal/prefs/actuator/ActuatorIntegrationTest.java b/app/src/test/java/org/onap/portal/prefs/actuator/ActuatorIntegrationTest.java
new file mode 100644
index 0000000..95e9b2a
--- /dev/null
+++ b/app/src/test/java/org/onap/portal/prefs/actuator/ActuatorIntegrationTest.java
@@ -0,0 +1,48 @@
+/*
+ *
+ * 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.prefs.actuator;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.onap.portal.prefs.BaseIntegrationTest;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.availability.ApplicationAvailability;
+import org.springframework.boot.availability.LivenessState;
+import org.springframework.boot.availability.ReadinessState;
+
+class ActuatorIntegrationTest extends BaseIntegrationTest {
+    
+    @Autowired private ApplicationAvailability applicationAvailability;
+
+    @Test
+    void livenessProbeIsAvailable() {
+      assertThat(applicationAvailability.getLivenessState()).isEqualTo(LivenessState.CORRECT);
+    }
+  
+    @Test
+    void readinessProbeIsAvailable() {
+  
+      assertThat(applicationAvailability.getReadinessState())
+          .isEqualTo(ReadinessState.ACCEPTING_TRAFFIC);
+    }
+}
diff --git a/app/src/test/java/org/onap/portal/prefs/preferences/PreferencesControllerIntegrationTest.java b/app/src/test/java/org/onap/portal/prefs/preferences/PreferencesControllerIntegrationTest.java
new file mode 100644
index 0000000..b5f4cf1
--- /dev/null
+++ b/app/src/test/java/org/onap/portal/prefs/preferences/PreferencesControllerIntegrationTest.java
@@ -0,0 +1,198 @@
+/*
+ *
+ * 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.prefs.preferences;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+import org.onap.portal.prefs.BaseIntegrationTest;
+import org.onap.portal.prefs.openapi.model.Preferences;
+import org.onap.portal.prefs.services.PreferencesService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+
+import io.restassured.http.ContentType;
+import io.restassured.http.Header;
+
+class PreferencesControllerIntegrationTest extends BaseIntegrationTest {
+
+    protected static final String X_REQUEST_ID = "addf6005-3075-4c80-b7bc-2c70b7d42b57";
+
+    @Autowired
+    PreferencesService preferencesService;
+
+    @Test
+    void thatUserPreferencesCanBeRetrieved() {
+        // First save a user preference before a GET can run
+        Preferences expectedResponse = new Preferences()
+            .properties("{\n" +
+                "    \"properties\": { \"appStarter\": \"value1\",\n" +
+                "    \"dashboard\": {\"key1:\" : \"value2\"}\n" +
+                "    } \n" +
+                "}");
+        preferencesService
+            .savePreferences(X_REQUEST_ID,"test-user", expectedResponse)
+            .block();
+
+        Preferences actualResponse = requestSpecification("test-user")
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .header(new Header("X-Request-Id", X_REQUEST_ID))
+            .when()
+            .get("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.OK.value())
+            .extract()
+            .body()
+            .as(Preferences.class);
+
+        assertThat(actualResponse).isNotNull();
+        assertThat(actualResponse.getProperties()).isEqualTo(expectedResponse.getProperties());
+    }
+    
+    @Test
+    void thatUserPreferencesCanNotBeRetrieved() {
+        unauthenticatedRequestSpecification()
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .contentType(ContentType.JSON)
+            .header(new Header("X-Request-Id", X_REQUEST_ID))
+            .when()
+            .get("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.UNAUTHORIZED.value());
+    }
+
+    @Test
+    void thatUserPreferencesCanBeSaved() {
+        Preferences expectedResponse = new Preferences()
+            .properties("{\n" +
+                "    \"properties\": { \"appStarter\": \"value1\",\n" +
+                "    \"dashboard\": {\"key1:\" : \"value2\"}\n" +
+                "    } \n" +
+                "}");
+        Preferences actualResponse = requestSpecification()
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .contentType(ContentType.JSON)
+            .header(new Header("X-Request-Id", X_REQUEST_ID))
+            .body(expectedResponse)
+            .when()
+            .post("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.OK.value())
+            .extract()
+            .body()
+            .as(Preferences.class);
+
+        assertThat(actualResponse).isNotNull();
+        assertThat(actualResponse.getProperties()).isEqualTo(expectedResponse.getProperties());
+    }
+
+    @Test
+    void thatUserPreferencesCanBeUpdated() {
+        // First save a user preference before a GET can run
+        Preferences initialPreferences = new Preferences()
+            .properties("{\n" +
+                "    \"properties\": { \"appStarter\": \"value1\",\n" +
+                "    \"dashboard\": {\"key1:\" : \"value2\"}\n" +
+                "    } \n" +
+                "}");
+        preferencesService
+            .savePreferences(X_REQUEST_ID,"test-user", initialPreferences)
+            .block();
+
+        Preferences expectedResponse = new Preferences()
+            .properties("{\n" +
+                "    \"properties\": { \"appStarter\": \"value3\",\n" +
+                "    \"dashboard\": {\"key2:\" : \"value4\"}\n" +
+                "    } \n" +
+                "}");
+        Preferences actualResponse = requestSpecification("test-user")
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .contentType(ContentType.JSON)
+            .header(new Header("X-Request-Id", X_REQUEST_ID))
+            .body(expectedResponse)
+            .when()
+            .put("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.OK.value())
+            .extract()
+            .body()
+            .as(Preferences.class);
+
+        assertThat(actualResponse).isNotNull();
+        assertThat(actualResponse.getProperties()).isEqualTo(expectedResponse.getProperties());
+    }
+
+    @Test
+    void thatUserPreferencesCanNotBeFound() {
+
+        Preferences actualResponse = requestSpecification("test-canNotBeFound")
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .header(new Header("X-Request-Id", X_REQUEST_ID))
+            .when()
+            .get("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.OK.value())
+            .extract()
+            .body()
+            .as(Preferences.class);
+
+        assertThat(actualResponse).isNotNull();
+        assertThat(actualResponse.getProperties()).isEqualTo("");
+    }
+
+    @Test
+    void thatUserPreferencesHasXRequestIdHeader() {
+
+        String actualResponse = requestSpecification("test-user")
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .header(new Header("X-Request-Id", X_REQUEST_ID))
+            .when()
+            .get("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.OK.value())
+            .extract()
+            .header("X-Request-Id");
+
+        assertThat(actualResponse).isNotNull().isEqualTo(X_REQUEST_ID);
+    }
+
+    @Test
+    void thatUserPreferencesHasNoXRequestIdHeader() {
+
+         requestSpecification("test-user")
+            .given()
+            .accept(MediaType.APPLICATION_JSON_VALUE)
+            .when()
+            .get("/v1/preferences")
+            .then()
+            .statusCode(HttpStatus.BAD_REQUEST.value());
+
+
+    }
+}
diff --git a/app/src/test/resources/application.yml b/app/src/test/resources/application.yml
new file mode 100644
index 0000000..3316c0d
--- /dev/null
+++ b/app/src/test/resources/application.yml
@@ -0,0 +1,35 @@
+server:
+  port: 9001
+  address: 0.0.0.0
+
+spring:
+  mongodb:
+    embedded:
+      version: 3.2.8
+  jackson:
+    serialization:
+      # needed for serializing objects of type object
+      FAIL_ON_EMPTY_BEANS: false
+  security:
+    oauth2:
+      resourceserver:
+        jwt:
+          jwk-set-uri: http://localhost:${wiremock.server.port}/auth/realms/ONAP/protocol/openid-connect/certs #Keycloak Endpoint
+
+portal-prefs:
+  realm: ONAP
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+  info:
+    build:
+      enabled: true
+    env:
+      enabled: true
+    git:
+      enabled: true
+    java:
+      enabled: true
diff --git a/app/src/test/resources/logback-spring.xml b/app/src/test/resources/logback-spring.xml
new file mode 100644
index 0000000..05503bc
--- /dev/null
+++ b/app/src/test/resources/logback-spring.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true">
+    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
+        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
+            <level>${LOGBACK_LEVEL:-info}</level>
+        </filter>
+        <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
+    </appender>
+
+    <root level="all">
+        <appender-ref ref="stdout"/>
+    </root>
+</configuration>
diff --git a/development/.env b/development/.env
new file mode 100644
index 0000000..ff65652
--- /dev/null
+++ b/development/.env
@@ -0,0 +1,15 @@
+KEYCLOAK_IMAGE=quay.io/keycloak/keycloak
+KEYCLOAK_VERSION=18.0.2-legacy
+KEYCLOAK_USER=admin
+KEYCLOAK_PASSWORD=password
+KEYCLOAK_DB=keycloak
+KEYCLOAK_DB_USER=keycloak
+KEYCLOAK_DB_PASSWORD=password
+POSTGRES_IMAGE=postgres
+POSTGRES_VERSION=15rc1
+MONGO_IMAGE=mongo
+MONGO_VERSION=latest
+MONGO_USER=root
+MONGO_PASSWORD=password
+
+
diff --git a/development/config/onap-realm.json b/development/config/onap-realm.json
new file mode 100644
index 0000000..75bdb6a
--- /dev/null
+++ b/development/config/onap-realm.json
@@ -0,0 +1,70 @@
+{
+  "id": "ONAP",
+  "realm": "ONAP",
+  "enabled": true,
+  "clients": [
+    {
+      "clientId": "portal-app",
+      "surrogateAuthRequired": false,
+      "enabled": true,
+      "alwaysDisplayInConsole": false,
+      "clientAuthenticatorType": "client-secret",
+      "redirectUris": [],
+      "webOrigins": [],
+      "notBefore": 0,
+      "bearerOnly": false,
+      "consentRequired": false,
+      "standardFlowEnabled": true,
+      "implicitFlowEnabled": false,
+      "directAccessGrantsEnabled": true,
+      "serviceAccountsEnabled": false,
+      "publicClient": true,
+      "frontchannelLogout": false,
+      "protocol": "openid-connect",
+      "attributes": {
+        "backchannel.logout.session.required": "true",
+        "backchannel.logout.revoke.offline.tokens": "false"
+      },
+      "authenticationFlowBindingOverrides": {},
+      "fullScopeAllowed": true,
+      "nodeReRegistrationTimeout": -1,
+      "defaultClientScopes": [
+        "web-origins",
+        "acr",
+        "profile",
+        "roles",
+        "email"
+      ],
+      "optionalClientScopes": [
+        "address",
+        "phone",
+        "offline_access",
+        "microprofile-jwt"
+      ]
+    }
+  ],
+  "users": [
+    {
+      "createdTimestamp": 1664965113698,
+      "username": "onap-admin",
+      "enabled": true,
+      "totp": false,
+      "emailVerified": false,
+      "credentials": [
+        {
+          "type": "password",
+          "createdDate": 1664965134586,
+          "secretData" : "{\"value\":\"nD4K4x8HEgk6xlWIAgzZOE+EOjdbovJfEa7N3WXwIMCWCfdXpn7Riys7hZhI1NbKcc9QPI9j8LQB/JSuZVcXKA==\",\"salt\":\"T8X9A9tT2cyLvEjHFo+zuQ==\",\"additionalParameters\":{}}",
+          "credentialData" : "{\"hashIterations\":27500,\"algorithm\":\"pbkdf2-sha256\",\"additionalParameters\":{}}"
+        }
+      ],
+      "disableableCredentialTypes": [],
+      "requiredActions": [],
+      "realmRoles": [
+        "default-roles-onap"
+      ],
+      "notBefore": 0,
+      "groups": []
+    }
+  ]
+}
\ No newline at end of file
diff --git a/development/docker-compose.yml b/development/docker-compose.yml
new file mode 100644
index 0000000..b08f7d5
--- /dev/null
+++ b/development/docker-compose.yml
@@ -0,0 +1,40 @@
+version: '3'
+
+volumes:
+  postgres_data:
+      driver: local
+
+services:
+  postgres:
+      image: "${POSTGRES_IMAGE}:${POSTGRES_VERSION}"
+      volumes:
+        - postgres_data:/var/lib/postgresql/data
+      environment:
+        POSTGRES_DB: ${KEYCLOAK_DB}
+        POSTGRES_USER: ${KEYCLOAK_DB_USER}
+        POSTGRES_PASSWORD: ${KEYCLOAK_DB_PASSWORD}
+  keycloak:
+      image: "${KEYCLOAK_IMAGE}:${KEYCLOAK_VERSION}"
+      environment:
+        DB_VENDOR: POSTGRES
+        DB_ADDR: postgres
+        DB_DATABASE: ${KEYCLOAK_DB}
+        DB_USER: ${KEYCLOAK_DB_USER}
+        DB_SCHEMA: public
+        DB_PASSWORD: ${KEYCLOAK_DB_PASSWORD}
+        KEYCLOAK_USER: ${KEYCLOAK_USER}
+        KEYCLOAK_PASSWORD: ${KEYCLOAK_PASSWORD}
+        KEYCLOAK_IMPORT: /config/onap-realm.json
+      ports:
+        - 8080:8080
+      volumes:
+        - ./config:/config
+      depends_on:
+        - postgres
+  mongo:
+    image: "${MONGO_IMAGE}:${MONGO_VERSION}"
+    ports:
+      - 27017:27017
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: ${MONGO_USER}
+      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_PASSWORD}
diff --git a/development/request.http b/development/request.http
new file mode 100644
index 0000000..403d4bc
--- /dev/null
+++ b/development/request.http
@@ -0,0 +1,48 @@
+POST http://localhost:8080/auth/realms/ONAP/protocol/openid-connect/token
+Content-Type: application/x-www-form-urlencoded
+
+client_id=portal-app&client_secret=&scope=openid&grant_type=password&username=onap-admin&password=password
+> {%
+ client.global.set("access_token", response.body.access_token);
+ client.global.set("id_token", response.body.id_token);
+ %}
+
+###
+
+POST http://localhost:9001/v1/preferences
+Accept: application/json
+Content-Type: application/json
+Authorization: Bearer {{access_token}}
+X-Auth-Identity: Bearer {{id_token}}
+X-Request-Id: {{$uuid}}
+
+{
+  "properties": {
+    "dashboard": {
+      "apps": {
+        "availableTiles": [
+          {
+            "type": "USER_LAST_ACTION_TILE",
+            "displayed": false
+          }
+        ],
+        "lastUserAction": {
+          "interval": "1H",
+          "filterType": "ALL"
+        }
+      }
+    }
+  }
+}
+
+###
+
+GET http://localhost:9001/v1/preferences
+Accept: application/json
+Authorization: Bearer {{access_token}}
+X-Auth-Identity: Bearer {{id_token}}
+X-Request-Id: {{$uuid}}
+
+###
+
+
diff --git a/development/run.sh b/development/run.sh
new file mode 100755
index 0000000..4f90ee5
--- /dev/null
+++ b/development/run.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+docker compose -f "$SCRIPT_DIR/docker-compose.yml" up -d
+
+cd $SCRIPT_DIR/..
+SPRING_PROFILES_ACTIVE=local ./gradlew bootRun
\ No newline at end of file
diff --git a/development/stop.sh b/development/stop.sh
new file mode 100755
index 0000000..9752a7f
--- /dev/null
+++ b/development/stop.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+
+# shutdown all docker container
+docker compose -f "$SCRIPT_DIR/docker-compose.yml" down -v
+
+cd $SCRIPT_DIR/..
+./gradlew -stop
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..249e583
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.jar
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..070cb70
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..a69d9cb
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,240 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# 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
+#
+#      https://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.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..53a6b23
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,91 @@
+@rem

+@rem Copyright 2015 the original author or authors.

+@rem

+@rem Licensed under the Apache License, Version 2.0 (the "License");

+@rem you may not use this file except in compliance with the License.

+@rem You may obtain a copy of the License at

+@rem

+@rem      https://www.apache.org/licenses/LICENSE-2.0

+@rem

+@rem Unless required by applicable law or agreed to in writing, software

+@rem distributed under the License is distributed on an "AS IS" BASIS,

+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+@rem See the License for the specific language governing permissions and

+@rem limitations under the License.

+@rem

+

+@if "%DEBUG%"=="" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%"=="" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Resolve any "." and ".." in APP_HOME to make it shorter.

+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if %ERRORLEVEL% equ 0 goto execute

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto execute

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*

+

+:end

+@rem End local scope for the variables with windows NT shell

+if %ERRORLEVEL% equ 0 goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+set EXIT_CODE=%ERRORLEVEL%

+if %EXIT_CODE% equ 0 set EXIT_CODE=1

+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%

+exit /b %EXIT_CODE%

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/lombok.config b/lombok.config
new file mode 100644
index 0000000..7a21e88
--- /dev/null
+++ b/lombok.config
@@ -0,0 +1 @@
+lombok.addLombokGeneratedAnnotation = true
diff --git a/openapi/build.gradle b/openapi/build.gradle
new file mode 100644
index 0000000..01664eb
--- /dev/null
+++ b/openapi/build.gradle
@@ -0,0 +1,53 @@
+plugins {
+    id 'java'
+    id 'idea'
+    id 'org.openapi.generator' version '5.3.0'
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.openapitools:openapi-generator:5.3.0'
+	implementation 'org.springframework.boot:spring-boot-starter-webflux:2.5.5'
+	// NOTE(KE) needed to add these dependencies, check in next version whether its removable...
+	// https://github.com/OpenAPITools/openapi-generator/issues/8360
+	compileOnly "io.springfox:springfox-swagger2:3.0.0"
+}
+
+// https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator-gradle-plugin/README.adoc
+openApiGenerate {
+    generatorName = "spring"
+    library = "spring-boot"
+    inputSpec = "$projectDir/src/main/resources/api/api.yml"
+    outputDir = "$buildDir/openapi"
+    configOptions = [
+		openApiNullable: "false",
+		skipDefaultInterface: "true",
+		dateLibrary: "java8",
+		interfaceOnly: "true",
+		useTags: "true",
+		useOptional: "true",
+		reactive: "true"
+    ]
+    generateApiTests = false
+    generateApiDocumentation = false
+    generateModelTests = false
+    generateModelDocumentation = false
+    invokerPackage = "org.onap.portal.prefs.openapi"
+    apiPackage = "org.onap.portal.prefs.openapi.api"
+    modelPackage = "org.onap.portal.prefs.openapi.model"
+}
+
+compileJava {
+    dependsOn tasks.openApiGenerate
+}
+
+sourceSets {
+    main {
+        java {
+            srcDirs += file("$buildDir/openapi/src/main/java")
+        }
+    }
+}
diff --git a/openapi/src/main/resources/api/api.yml b/openapi/src/main/resources/api/api.yml
new file mode 100644
index 0000000..e578911
--- /dev/null
+++ b/openapi/src/main/resources/api/api.yml
@@ -0,0 +1,240 @@
+openapi: 3.0.2
+info:
+  title: Config API
+  version: '1.0'
+servers:
+  - url: 'http://localhost:9001/{base}'
+    variables:
+      base:
+        default: 'portal-prefs'
+        description: Basepath
+paths:
+  /v1/preferences:
+    get:
+      description: Returns user preferences
+      summary: Get user preferences
+      operationId: getPreferences
+      parameters:
+        - $ref: '#/components/parameters/XRequestIdHeader'
+      tags:
+        - preferences
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Preferences'
+        '400':
+          $ref: '#/components/responses/BadRequest'
+        '401':
+          $ref: '#/components/responses/Unauthorized'
+        '403':
+          $ref: '#/components/responses/Forbidden'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
+        '502':
+          $ref: '#/components/responses/BadGateway'
+    put:
+      description: Updates user preferences
+      summary: Update user preferences
+      operationId: updatePreferences
+      parameters:
+        - $ref: '#/components/parameters/XRequestIdHeader'
+      tags:
+        - preferences
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Preferences'
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Preferences'
+        '400':
+          $ref: '#/components/responses/BadRequest'
+        '401':
+          $ref: '#/components/responses/Unauthorized'
+        '403':
+          $ref: '#/components/responses/Forbidden'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
+        '502':
+          $ref: '#/components/responses/BadGateway'
+    post:
+      description: Save user preferences
+      summary: Save user preferences
+      operationId: savePreferences
+      parameters:
+        - $ref: '#/components/parameters/XRequestIdHeader'
+      tags:
+        - preferences
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Preferences'
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Preferences'
+        '400':
+          $ref: '#/components/responses/BadRequest'
+        '401':
+          $ref: '#/components/responses/Unauthorized'
+        '403':
+          $ref: '#/components/responses/Forbidden'
+        '500':
+          $ref: '#/components/responses/InternalServerError'
+        '502':
+          $ref: '#/components/responses/BadGateway'
+components:
+  parameters:
+    XRequestIdHeader:
+      name: X-Request-Id
+      in: header
+      description: The unique identifier of the request
+      required: true
+      schema:
+        type: string
+  schemas:
+    Preferences:
+      type: object
+      properties:
+        properties:
+          type: object
+      required:
+        - properties
+    Problem:
+      type: object
+      properties:
+        type:
+          type: string
+          format: uri-reference
+          description: |
+            A URI reference that uniquely identifies the problem type only in the context of the provided API. Opposed to the specification in RFC-7807, it is neither recommended to be dereferencable and point to a human-readable documentation nor globally unique for the problem type.
+          default: 'about:blank'
+          example: /problem/connection-error
+        title:
+          type: string
+          description: |
+            A short summary of the problem type. Written in English and readable for engineers, usually not suited for non technical stakeholders and not localized.
+          example: Service Unavailable
+        status:
+          type: integer
+          format: int32
+          description: |
+            The HTTP status code generated by the origin server for this occurrence of the problem.
+          minimum: 100
+          maximum: 600
+          exclusiveMaximum: true
+          example: 503
+        detail:
+          type: string
+          description: |
+            A human readable explanation specific to this occurrence of the problem that is helpful to locate the problem and give advice on how to proceed. Written in English and readable for engineers, usually not suited for non technical stakeholders and not localized.
+          example: Connection to database timed out
+        instance:
+          type: string
+          format: uri-reference
+          description: |
+            A URI reference that identifies the specific occurrence of the problem, e.g. by adding a fragment identifier or sub-path to the problem type. May be used to locate the root of this problem in the source code.
+          example: /problem/connection-error#token-info-read-timed-out
+  responses:
+    BadRequest:
+      description: '400: Bad Request'
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    Unauthorized:
+      description: '401: Unauthorized'
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    Forbidden:
+      description: '403: Forbidden'
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    NotFound:
+      description: '404: Not Found'
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    NotAllowed:
+      description: '405: Method Not Allowed'
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    Conflict:
+      description: '409: Conflict'
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    InternalServerError:
+      description: Internal Server Error
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
+    BadGateway:
+      description: Bad Gateway
+      content:
+        application/problem+json:
+          schema:
+            $ref: '#/components/schemas/Problem'
+      headers:
+        X-Request-Id:
+          schema:
+            type: string
+          description: A <uuid4> in each response
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..dc99316
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,43 @@
+// Centrally declare plugin versions here
+pluginManagement {
+    // https://docs.gradle.org/current/userguide/plugins.html#sec:plugin_version_management
+    plugins {
+        id 'io.spring.dependency-management' version '1.0.13.RELEASE'
+        id 'org.springframework.boot' version '2.7.3'
+        id 'org.sonarqube' version '3.4.0.2513'
+        id 'com.github.hierynomus.license' version '0.16.1'
+        id 'com.gorylenko.gradle-git-properties' version '2.4.1'
+    }
+    // https://docs.gradle.org/current/userguide/plugins.html#sec:custom_plugin_repositories
+    repositories {
+        mavenCentral()
+        maven {
+            url "https://plugins.gradle.org/m2/"
+        }
+    }
+}
+
+// This is a preview feature, enable in the future and remove repositories blocks from sub build.gradles
+// https://docs.gradle.org/current/userguide/declaring_repositories.html#sub:centralized-repository-declaration
+// dependencyResolutionManagement {
+// 	maven {
+// 		url "${maven_central_url}"
+// 		credentials {
+// 			username = "${artifactory_user}"
+// 			password = "${artifactory_password}"
+// 		}
+// 	}
+// 	maven {
+// 		url "${gradle_plugins_url}"
+// 		credentials {
+// 			username = "${artifactory_user}"
+// 			password = "${artifactory_password}"
+// 		}
+// 	}
+// }
+
+rootProject.name = 'portal-prefs'
+
+include 'openapi'
+include 'app'
+
diff --git a/version b/version
new file mode 100644
index 0000000..6e8bf73
--- /dev/null
+++ b/version
@@ -0,0 +1 @@
+0.1.0