Feature/allow multiple notification urls (#90)

src/main/java/de/app/fivegla/Application.java

@@ -17,7 +17,7 @@
 import org.springframework.web.client.RestTemplate;
 import org.springframework.web.servlet.config.annotation.EnableWebMvc;
 
-import java.util.Collections;
+import java.util.List;
 
 /**
  * The main class of the application.
@@ -56,8 +56,8 @@ public class Application {
     @Value("${app.fiware.contextBrokerUrl}")
     private String contextBrokerUrl;
 
-    @Value("${app.fiware.subscriptions.notificationUrl}")
-    private String notificationUrl;
+    @Value("${app.fiware.subscriptions.notificationUrls}")
+    private String[] notificationUrls;
 
     @Value("${app.fiware.tenant}")
     private String tenant;
@@ -123,7 +123,7 @@ public StatusService statusService() {
      */
     @Bean
     public SubscriptionService subscriptionService() {
-        return new SubscriptionService(contextBrokerUrl, tenant, Collections.singletonList(notificationUrl));
+        return new SubscriptionService(contextBrokerUrl, tenant, List.of(notificationUrls));
     }
 
     /**

src/main/resources/application.yml

@@ -71,7 +71,7 @@ app:
     contextBrokerUrl: ${CONTEXT_BROKER_URL}
     subscriptions:
       enabled: true
-      notificationUrl: ${NOTIFICATION_URL}
+      notificationUrls: ${NOTIFICATION_URLS}
     tenant: ${FIWARE_TENANT}
   cors:
     allowed-origins: ${CORS_ALLOWED_ORIGINS}

src/test/java/de/app/fivegla/ApplicationConfigurationIntegrationTest.java

@@ -0,0 +1,23 @@
+package de.app.fivegla;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringBootTest
+class ApplicationConfigurationIntegrationTest extends SpringBootIntegrationTestBase {
+
+    @Value("${app.fiware.subscriptions.notificationUrls}")
+    private String[] notificationUrls;
+
+    @Test
+    void givenValidConfigurationWhenResolvingNotificationUrlsThenReturnValidUrls() {
+        assertThat(notificationUrls).isNotEmpty();
+        assertThat(notificationUrls.length).isEqualTo(2);
+        assertThat(notificationUrls[0]).isEqualTo("https://cygnus1.5gla.de");
+        assertThat(notificationUrls[1]).isEqualTo("https://cygnus2.5gla.de");
+    }
+
+}

src/test/resources/application.yml

@@ -71,7 +71,7 @@ app:
     contextBrokerUrl: https://orion.5gla.de
     subscriptions:
       enabled: false
-      notificationUrl: https://cygnus.5gla.de
+      notificationUrls: https://cygnus1.5gla.de, https://cygnus2.5gla.de
     tenant: default
   cors:
     allowed-origins: "http://localhost:8080,https://app.5gla.de/"