Spring boot starters for API and Gateway services

settings.gradle

@@ -8,6 +8,9 @@ include 'thunx-model'
 include 'thunx-pdp'
 include 'thunx-pdp-opa'
 include 'thunx-spring'
+include 'thunx-autoconfigure'
+include 'thunx-api-spring-boot-starter'
+include 'thunx-gateway-spring-boot-starter'
 
 include 'thunx-encoding-json'
 include 'thunx-predicates-querydsl'
@@ -18,3 +21,4 @@ include 'thunx-predicates-querydsl'
 //        substitute module('eu.xenit.contentcloud:rego-java') with project(':rego-java')
 //    }
 //}
+

thunx-api-spring-boot-starter/build.gradle

@@ -0,0 +1,14 @@
+plugins {
+    id 'java-library'
+}
+
+apply from: "${rootDir}/gradle/publish.gradle"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api project(':thunx-spring')
+    api project(':thunx-autoconfigure')
+}

thunx-autoconfigure/build.gradle

@@ -0,0 +1,47 @@
+plugins {
+    id 'java-library'
+}
+
+apply from: "${rootDir}/gradle/publish.gradle"
+
+dependencies {
+
+    compileOnly platform("org.springframework.boot:spring-boot-dependencies:${springBootBomVersion}")
+    compileOnly platform("org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}")
+
+    implementation "org.springframework.boot:spring-boot-autoconfigure"
+
+    compileOnly "org.projectlombok:lombok"
+
+    compileOnly project(':thunx-spring')
+    compileOnly project(':thunx-pdp-opa')
+    compileOnly "eu.xenit.contentcloud:opa-async-java-client:0.2.0"
+
+    compileOnly 'org.springframework.security:spring-security-web'
+
+    compileOnly 'org.springframework.data:spring-data-rest-core'
+    compileOnly 'org.springframework.cloud:spring-cloud-starter-gateway'
+
+    annotationProcessor "org.springframework.boot:spring-boot-autoconfigure-processor:${springBootBomVersion}"
+    annotationProcessor "org.projectlombok:lombok:${lombokVersion}"
+
+    testImplementation platform("org.springframework.boot:spring-boot-dependencies:${springBootBomVersion}")
+    testImplementation platform("org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}")
+
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'org.assertj:assertj-core:3.21.0'
+    testImplementation 'org.mockito:mockito-core:2.1.0'
+    testImplementation "org.springframework.boot:spring-boot-test"
+    testImplementation "org.springframework.boot:spring-boot-starter-data-jpa"
+    testImplementation "org.springframework.boot:spring-boot-starter-data-rest"
+    testImplementation 'org.springframework.security:spring-security-web'
+    testImplementation 'org.springframework.cloud:spring-cloud-starter-gateway'
+    testImplementation 'com.h2database:h2:1.4.200'
+    testImplementation project(':thunx-spring')
+    testImplementation project(':thunx-pdp-opa')
+    testImplementation "eu.xenit.contentcloud:opa-async-java-client:0.2.0"
+}
+
+test {
+    useJUnitPlatform()
+}

thunx-autoconfigure/src/main/java/eu/xenit/contentcloud/thunx/api/autoconfigure/AbacAutoConfiguration.java

@@ -0,0 +1,16 @@
+package eu.xenit.contentcloud.thunx.api.autoconfigure;
+
+import eu.xenit.contentcloud.thunx.spring.data.EnableAbac;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+
+@Configuration
+@ConditionalOnClass(RepositoryRestResource.class)
+public class AbacAutoConfiguration {
+
+    @Configuration
+    @EnableAbac
+    public static class EnableAbacAutoConfiguration {
+    }
+}

thunx-autoconfigure/src/main/java/eu/xenit/contentcloud/thunx/gateway/autoconfigure/GatewayAutoConfiguration.java

@@ -0,0 +1,58 @@
+package eu.xenit.contentcloud.thunx.gateway.autoconfigure;
+
+import eu.xenit.contentcloud.opa.client.OpaClient;
+import eu.xenit.contentcloud.opa.client.rest.RestClientConfiguration;
+import eu.xenit.contentcloud.thunx.pdp.PolicyDecisionComponentImpl;
+import eu.xenit.contentcloud.thunx.pdp.PolicyDecisionPointClient;
+import eu.xenit.contentcloud.thunx.pdp.opa.OpaQueryProvider;
+import eu.xenit.contentcloud.thunx.pdp.opa.OpenPolicyAgentPDPClient;
+import eu.xenit.contentcloud.thunx.spring.gateway.filter.AbacGatewayFilterFactory;
+import eu.xenit.contentcloud.thunx.spring.security.ReactivePolicyAuthorizationManager;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.authorization.ReactiveAuthorizationManager;
+import org.springframework.security.web.server.authorization.AuthorizationContext;
+
+@Configuration
+@ConditionalOnClass({OpaClient.class, AbstractGatewayFilterFactory.class})
+@EnableConfigurationProperties(OpaProperties.class)
+public class GatewayAutoConfiguration {
+
+    @Bean
+    @ConditionalOnMissingBean
+    public OpaClient opaClient(OpaProperties opaProperties) {
+        return OpaClient.builder()
+                .httpLogging(RestClientConfiguration.LogSpecification::all)
+                .url(opaProperties.getService().getUrl())
+                .build();
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public OpaQueryProvider propertyBasedOpaQueryProvider(OpaProperties opaProperties) {
+        return request -> opaProperties.getQuery();
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public PolicyDecisionPointClient pdpClient(OpaClient opaClient, OpaQueryProvider queryProvider) {
+        return new OpenPolicyAgentPDPClient(opaClient, queryProvider);
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public ReactiveAuthorizationManager<AuthorizationContext> reactiveAuthenticationManager(
+            PolicyDecisionPointClient pdpClient) {
+        return new ReactivePolicyAuthorizationManager(new PolicyDecisionComponentImpl(pdpClient));
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public AbacGatewayFilterFactory abacGatewayFilterFactory() {
+        return new AbacGatewayFilterFactory();
+    }
+}

thunx-autoconfigure/src/main/java/eu/xenit/contentcloud/thunx/gateway/autoconfigure/OpaProperties.java

@@ -0,0 +1,16 @@
+package eu.xenit.contentcloud.thunx.gateway.autoconfigure;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+@Data
+@ConfigurationProperties(prefix = "opa")
+public class OpaProperties {
+    private OpaServiceProperties service;
+    private String query;
+
+    @Data
+    public static class OpaServiceProperties {
+        private String url;
+    }
+}

thunx-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -0,0 +1,4 @@
+# Auto Configure
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+eu.xenit.contentcloud.thunx.api.autoconfigure.AbacAutoConfiguration,\
+eu.xenit.contentcloud.thunx.gateway.autoconfigure.GatewayAutoConfiguration

thunx-autoconfigure/src/test/java/eu/xenit/contentcloud/thunx/api/autoconfigure/AbacAutoConfigurationTest.java

@@ -0,0 +1,50 @@
+package eu.xenit.contentcloud.thunx.api.autoconfigure;
+
+import eu.xenit.contentcloud.thunx.encoding.ThunkExpressionDecoder;
+import eu.xenit.contentcloud.thunx.spring.data.rest.AbacExceptionHandler;
+import eu.xenit.contentcloud.thunx.spring.data.rest.AbacRequestFilter;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.support.Repositories;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+public class AbacAutoConfigurationTest {
+
+    @Test
+    public void shouldEnableAbac() {
+
+        ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+                .withConfiguration(AutoConfigurations.of(
+                        AbacAutoConfiguration.class
+                ));
+
+        contextRunner.withUserConfiguration(TestContext.class).run((context) -> {
+            assertThat(context.getBean(ThunkExpressionDecoder.class), is(not(nullValue())));
+            assertThat(context.getBean(AbacExceptionHandler.class), is(not(nullValue())));
+            assertThat(context.getBean(AbacRequestFilter.class), is(not(nullValue())));
+            assertThat(context.getBean("abacFilterRegistration"), is(not(nullValue())));
+            assertThat(context.getBean("interceptRepositoryRestMvcConfiguration"), is(not(nullValue())));
+            assertThat(context.getBean("ensureQueryDslPredication"), is(not(nullValue())));
+        });
+    }
+
+    @Configuration
+    @EnableAutoConfiguration(exclude={
+            org.springframework.cloud.gateway.config.GatewayAutoConfiguration.class,
+            eu.xenit.contentcloud.thunx.gateway.autoconfigure.GatewayAutoConfiguration.class
+    })
+    public static class TestContext {
+
+        @Bean
+        public Repositories repositories(ApplicationContext context) {
+            return new Repositories(context);
+        }
+    }
+}

thunx-autoconfigure/src/test/java/eu/xenit/contentcloud/thunx/gateway/autoconfigure/GatewayAutoConfigurationTest.java

@@ -0,0 +1,102 @@
+package eu.xenit.contentcloud.thunx.gateway.autoconfigure;
+
+import eu.xenit.contentcloud.opa.client.OpaClient;
+import eu.xenit.contentcloud.thunx.pdp.PolicyDecisionPointClient;
+import eu.xenit.contentcloud.thunx.pdp.opa.OpaQueryProvider;
+import eu.xenit.contentcloud.thunx.spring.gateway.filter.AbacGatewayFilterFactory;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.authorization.ReactiveAuthorizationManager;
+import org.springframework.security.web.server.authorization.AuthorizationContext;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+public class GatewayAutoConfigurationTest {
+
+    @Test
+    public void shouldEnableGatewayBeans() {
+
+        ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+                .withConfiguration(AutoConfigurations.of(
+                        GatewayAutoConfiguration.class
+                ));
+
+        contextRunner.withUserConfiguration(TestContext.class)
+            .withPropertyValues("opa.service.url=https://some/opa/service")
+            .run((context) -> {
+                assertThat(context.getBean(OpaClient.class)).isNotNull();
+                assertThat(context.getBean(OpaQueryProvider.class)).isNotNull();
+                assertThat(context.getBean(PolicyDecisionPointClient.class)).isNotNull();
+                assertThat(context.getBean(ReactiveAuthorizationManager.class)).isNotNull();
+                assertThat(context.getBean(AbacGatewayFilterFactory.class)).isNotNull();
+        });
+    }
+
+    @Test
+    public void shouldUseProvidedGatewayBeans() {
+
+        ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+                .withConfiguration(AutoConfigurations.of(
+                        GatewayAutoConfiguration.class
+                ));
+
+        contextRunner.withUserConfiguration(TestContextWithBeans.class)
+                .run((context) -> {
+                    assertThat(context.getBean(OpaClient.class)).isSameAs(context.getBean(TestContextWithBeans.class).opaClient());
+                    assertThat(context.getBean(OpaQueryProvider.class)).isSameAs(context.getBean(TestContextWithBeans.class).customQueryProvider());
+                    assertThat(context.getBean(PolicyDecisionPointClient.class)).isSameAs(context.getBean(TestContextWithBeans.class).pdpClient());
+                    assertThat(context.getBean(ReactiveAuthorizationManager.class)).isSameAs(context.getBean(TestContextWithBeans.class).reactiveAuthenticationManager());
+                    assertThat(context.getBean(AbacGatewayFilterFactory.class)).isSameAs(context.getBean(TestContextWithBeans.class).abacGatewayFilterFactory());
+                });
+    }
+
+    @Configuration
+    @EnableAutoConfiguration(exclude={
+            org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration.class,
+            org.springframework.cloud.gateway.config.GatewayAutoConfiguration.class,
+            eu.xenit.contentcloud.thunx.api.autoconfigure.AbacAutoConfiguration.class
+    })
+    public static class TestContext {
+    }
+
+    @Configuration
+    @EnableAutoConfiguration(exclude={
+            org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration.class,
+            org.springframework.cloud.gateway.config.GatewayAutoConfiguration.class,
+            eu.xenit.contentcloud.thunx.api.autoconfigure.AbacAutoConfiguration.class
+    })
+    public static class TestContextWithBeans {
+
+        @Bean
+        public OpaClient opaClient() {
+            return mock(OpaClient.class);
+        }
+
+        @Bean
+        @ConditionalOnMissingBean
+        public PolicyDecisionPointClient pdpClient() {
+            return mock(PolicyDecisionPointClient.class);
+        }
+
+        @Bean
+        public ReactiveAuthorizationManager<AuthorizationContext> reactiveAuthenticationManager() {
+            return mock(ReactiveAuthorizationManager.class);
+        }
+
+        @Bean
+        public AbacGatewayFilterFactory abacGatewayFilterFactory() {
+            return mock(AbacGatewayFilterFactory.class);
+        }
+
+        @Bean
+        public OpaQueryProvider customQueryProvider() {
+            return mock(OpaQueryProvider.class);
+        }
+    }
+}

thunx-gateway-spring-boot-starter/build.gradle

@@ -0,0 +1,14 @@
+plugins {
+    id 'java-library'
+}
+
+apply from: "${rootDir}/gradle/publish.gradle"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api project(':thunx-pdp-opa')
+    api project(':thunx-autoconfigure')
+}