feat(ticketing-eai/client-internal): add autoconfiguration and properties

Author: simonhir

ticketing-eai/api-client-internal/pom.xml

@@ -59,6 +59,15 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-validation</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-oauth2-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <optional>true</optional>
+        </dependency>
 
         <!-- openApi -->
         <dependency>

ticketing-eai/api-client-internal/src/main/java/de/muenchen/oss/dbs/ticketing/eai/client/ApiClientAutoConfiguration.java

@@ -0,0 +1,60 @@
+package de.muenchen.oss.dbs.ticketing.eai.client;
+
+import de.muenchen.oss.dbs.ticketing.eai.client.api.ArticlesApi;
+import de.muenchen.oss.dbs.ticketing.eai.client.api.OrganizationsApi;
+import de.muenchen.oss.dbs.ticketing.eai.client.api.TicketsApi;
+import de.muenchen.oss.dbs.ticketing.eai.client.api.UsersApi;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.oauth2.client.AuthorizedClientServiceOAuth2AuthorizedClientManager;
+import org.springframework.security.oauth2.client.OAuth2AuthorizedClientService;
+import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
+import org.springframework.security.oauth2.client.web.reactive.function.client.ServletOAuth2AuthorizedClientExchangeFilterFunction;
+import org.springframework.web.reactive.function.client.WebClient;
+
+@AutoConfiguration
+@EnableConfigurationProperties({ApiClientProperties.class})
+public class ApiClientAutoConfiguration {
+    @Bean
+    @ConditionalOnMissingBean
+    public ApiClient apiClient(final ApiClientProperties apiClientProperties,
+                               final ClientRegistrationRepository clientRegistrationRepository,
+                               final OAuth2AuthorizedClientService authorizedClientService) {
+        final ServletOAuth2AuthorizedClientExchangeFilterFunction oauth = new ServletOAuth2AuthorizedClientExchangeFilterFunction(
+                new AuthorizedClientServiceOAuth2AuthorizedClientManager(
+                        clientRegistrationRepository, authorizedClientService));
+        oauth.setDefaultClientRegistrationId(apiClientProperties.getOauthClientRegistration());
+        final WebClient webClient = ApiClient.buildWebClientBuilder()
+                .apply(oauth.oauth2Configuration())
+                .build();
+        final ApiClient apiClient = new ApiClient(webClient);
+        apiClient.setBasePath(apiClientProperties.getEaiBaseUrl());
+        return apiClient;
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public TicketsApi ticketsApi(final ApiClient apiClient) {
+        return new TicketsApi(apiClient);
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public ArticlesApi articlesApi(final ApiClient apiClient) {
+        return new ArticlesApi(apiClient);
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public OrganizationsApi organizationsApi(final ApiClient apiClient) {
+        return new OrganizationsApi(apiClient);
+    }
+
+    @Bean
+    @ConditionalOnMissingBean
+    public UsersApi usersApi(final ApiClient apiClient) {
+        return new UsersApi(apiClient);
+    }
+}

ticketing-eai/api-client-internal/src/main/java/de/muenchen/oss/dbs/ticketing/eai/client/ApiClientProperties.java

@@ -0,0 +1,36 @@
+package de.muenchen.oss.dbs.ticketing.eai.client;
+
+import jakarta.validation.constraints.NotBlank;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.validation.annotation.Validated;
+
+@ConfigurationProperties("dbs.eai.client")
+@Validated
+public class ApiClientProperties {
+    /**
+     * Base URL of the ticket-eai-service to make API calls against.
+     */
+    @NotBlank
+    private String eaiBaseUrl;
+    /**
+     * Name of the client registration configured via Spring oAuth client to use for authenticating API requests.
+     */
+    @NotBlank
+    private String oauthClientRegistration = "zammad";
+
+    public String getEaiBaseUrl() {
+        return eaiBaseUrl;
+    }
+
+    public void setEaiBaseUrl(String eaiBaseUrl) {
+        this.eaiBaseUrl = eaiBaseUrl;
+    }
+
+    public String getOauthClientRegistration() {
+        return oauthClientRegistration;
+    }
+
+    public void setOauthClientRegistration(String oauthClientRegistration) {
+        this.oauthClientRegistration = oauthClientRegistration;
+    }
+}

ticketing-eai/api-client-internal/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -0,0 +1 @@
+de.muenchen.oss.dbs.ticketing.eai.client.ApiClientAutoConfiguration