feat: Added Microservices UI Client side composition #2698 (#3062)

* Added Microservices client side ui composition to the repo. Added ClientSideCompositionTest, ApiGateway, ClientSideIntegrator, FrontendComponent, CartFrontend, ProductFrontend, updated pom.xml, ReadME.md. * Improved some checkstyle changes. * Added Random variable to re-use the random instead of creating it everytime in FrontendComponent. * changed the Pom.xml and upadted the ReadME.md * Changes in the README.md File as per requirement, name of the file changed from ReadME.md to README.md --------- Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>
2026-05-20 07:26:49 +00:00 · 2025-01-07 00:25:08 +05:30
parent c06bd2c5a1
commit ab59dfe770
10 changed files with 442 additions and 0 deletions
@@ -0,0 +1,46 @@
+package com.iluwatar.clientsideuicomposition;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * ClientSideCompositionTest contains unit tests to validate dynamic route registration and UI composition.
+ */
+class ClientSideCompositionTest {
+
+  /**
+   * Tests dynamic registration of frontend components and dynamic composition of UI.
+   */
+  @Test
+  void testClientSideUIComposition() {
+    // Create API Gateway and dynamically register frontend components
+    ApiGateway apiGateway = new ApiGateway();
+    apiGateway.registerRoute("/products", new ProductFrontend());
+    apiGateway.registerRoute("/cart", new CartFrontend());
+
+    // Create the Client-Side Integrator
+    ClientSideIntegrator integrator = new ClientSideIntegrator(apiGateway);
+
+    // Dynamically pass parameters for data fetching
+    Map<String, String> productParams = new HashMap<>();
+    productParams.put("category", "electronics");
+
+    // Compose UI for products and cart with dynamic params
+    integrator.composeUi("/products", productParams);
+
+    Map<String, String> cartParams = new HashMap<>();
+    cartParams.put("userId", "user123");
+    integrator.composeUi("/cart", cartParams);
+
+    // Validate the dynamically fetched data
+    String productData = apiGateway.handleRequest("/products", productParams);
+    String cartData = apiGateway.handleRequest("/cart", cartParams);
+
+    assertTrue(productData.contains("Product List for category 'electronics'"));
+    assertTrue(cartData.contains("Shopping Cart for user 'user123'"));
+  }
+}