Implementation Lambda Function

SecurityDemo/build.gradle

@@ -23,6 +23,19 @@ dependencies {
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.security:spring-security-test'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+    implementation 'org.springframework:spring-test'
+
+    implementation 'com.amazonaws:aws-lambda-java-core:1.2.1'
+    implementation 'com.amazonaws:aws-lambda-java-events:3.11.2'
+    implementation 'org.springframework.cloud:spring-cloud-function-adapter-aws:3.2.2'
+    implementation 'org.springframework.cloud:spring-cloud-function-web:3.2.2'
+
+    implementation 'com.fasterxml.jackson.core:jackson-databind'
+
+    implementation 'ch.qos.logback:logback-classic'
+
+    runtimeOnly 'org.springframework.boot:spring-boot-starter-tomcat'
+
 }
 
 tasks.named('test') {

SecurityDemo/src/main/java/com/securitydemo/LambdaHandler.java

@@ -0,0 +1,43 @@
+package com.securitydemo;
+
+import com.amazonaws.services.lambda.runtime.Context;
+import com.amazonaws.services.lambda.runtime.RequestHandler;
+import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyRequestEvent;
+import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyResponseEvent;
+import org.springframework.boot.SpringApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class LambdaHandler implements RequestHandler<APIGatewayProxyRequestEvent, APIGatewayProxyResponseEvent> {
+    private static ConfigurableApplicationContext applicationContext;
+    private static SpringApiGatewayRequestHandler requestHandler;
+
+    @Override
+    public APIGatewayProxyResponseEvent handleRequest(APIGatewayProxyRequestEvent input, Context context) {
+        try {
+            // Initialize Spring context if not already done
+            if (applicationContext == null) {
+                applicationContext = SpringApplication.run(SecurityDemoApplication.class);
+                requestHandler = new SpringApiGatewayRequestHandler(applicationContext);
+            }
+
+            // Process the request through Spring
+            return requestHandler.handle(input);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            APIGatewayProxyResponseEvent errorResponse = new APIGatewayProxyResponseEvent();
+            errorResponse.setStatusCode(500);
+            errorResponse.setBody("{\"error\":\"" + e.getMessage() + "\"}");
+
+            // Add only Content-Type header without CORS
+            Map<String, String> headers = new HashMap<>();
+            headers.put("Content-Type", "application/json");
+            errorResponse.setHeaders(headers);
+
+            return errorResponse;
+        }
+    }
+}

SecurityDemo/src/main/java/com/securitydemo/SecurityDemoApplication.java

@@ -14,6 +14,7 @@
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
 
+
 @SpringBootApplication
 @EnableMethodSecurity
 public class SecurityDemoApplication {