fix: using Micronaut's Response.getReason instead of javax core Response

function-aws-api-proxy/src/main/java/io/micronaut/function/aws/proxy/MicronautResponseWriter.java

@@ -33,7 +33,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.ws.rs.core.Response;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.nio.charset.Charset;
@@ -109,8 +108,7 @@ public AwsProxyResponse writeResponse(
         if (containerResponse.getAwsProxyRequest().getRequestSource() == AwsProxyRequest.RequestSource.ALB) {
             final HttpStatus status = containerResponse.getStatus();
             awsProxyResponse.setStatusDescription(
-                    status + " " +
-                            Response.Status.fromStatusCode(status.getCode()).getReasonPhrase());
+                    status + " " + status.getReason());
         }
 
         Timer.stop(TIMER_NAME);

function-aws-api-proxy/src/test/groovy/io/micronaut/function/aws/proxy/ResponseStatusSpec.groovy

@@ -43,6 +43,29 @@ class ResponseStatusSpec extends Specification {
         handler.close()
     }
 
+    void "test multi status with alb"() {
+        given:
+
+        def handler = new MicronautLambdaContainerHandler(
+                ApplicationContext.builder().properties([
+                        'micronaut.security.enabled': false,
+                        'spec.name': 'ResponseStatusSpec'
+                ])
+        )
+
+        AwsProxyRequestBuilder builder = new AwsProxyRequestBuilder('/response-status/multi-status', HttpMethod.GET.toString()).alb()
+        builder.header(HttpHeaders.CONTENT_TYPE, MediaType.TEXT_PLAIN)
+
+        when:
+        def response = handler.proxy(builder.build(), lambdaContext)
+
+        then:
+        response.statusCode == 207
+
+        cleanup:
+        handler.close()
+    }
+
     void "test optional causes 404"() {
         given:
 
@@ -164,5 +187,11 @@ class ResponseStatusSpec extends Specification {
         void deleteSomething() {
             // do nothing
         }
+
+        @Get(uri = "/multi-status", processes = MediaType.TEXT_PLAIN)
+        @Status(HttpStatus.MULTI_STATUS)
+        void multiStatus() {
+            // do nothing
+        }
     }
 }