fix: ClientCaller bugs

src/main/java/vn/zalopay/benchmark/core/ClientCaller.java

@@ -30,6 +30,7 @@
 import java.nio.charset.StandardCharsets;
 import java.util.LinkedHashMap;
 import java.util.Map;
+import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
@@ -197,6 +198,14 @@ public GrpcResponse call(String deadlineMs) {
                     .blockingUnaryCall(requestMessages, streamObserver, callOptions(deadline))
                     .get();
         } catch (Exception e) {
+            grpcResponse.setSuccess(false);
+            Throwable ex;
+            if (e instanceof ExecutionException) {
+                ex = e.getCause();
+            } else {
+                ex = e;
+            }
+            grpcResponse.setThrowable(ex);
             shutdownNettyChannel();
         }
 

src/test/java/vn/zalopay/benchmark/core/sampler/GrpcSamplerTest.java

@@ -167,7 +167,7 @@ public void testCanSendSampleRequestWithErrorNullResponse() {
         grpcSampler.setHost(hostAndPort.getHost());
         grpcSampler.setPort(Integer.toString(hostAndPort.getPort()));
         grpcSampler.setFullMethod(FULL_METHOD);
-        grpcSampler.setDeadline("1");
+        grpcSampler.setDeadline("500");
         grpcSampler.setTls(false);
         grpcSampler.setTlsDisableVerification(false);
         grpcSampler.setRequestJson(REQUEST_JSON);