fix response log format issue

Author: arturopala

LambdaEnvironment.scala

@@ -83,7 +83,7 @@ final class LambdaEnvironment(
   final val shouldLogInJsonArrayFormat: Boolean =
     maybeGetProperty("LAMBDA_RUNTIME_LOG_FORMAT")
       .map(_.toUpperCase().contains("JSON_ARRAY"))
-      .getOrElse(false)
+      .getOrElse(true)
 
   final val shouldLogInJsonStringFormat: Boolean =
     maybeGetProperty("LAMBDA_RUNTIME_LOG_FORMAT")

LambdaRuntime.scala

@@ -356,14 +356,14 @@ trait LambdaRuntime extends EventHandler, EventHandlerTag {
             }
           )
 
+      val t1 = System.currentTimeMillis()
+
       val output = result.fold(identity, identity)
 
       val isJsonReponse =
         (output.startsWith("{") && output.endsWith("}"))
           || (output.startsWith("[") && output.endsWith("]"))
 
-      val t1 = System.currentTimeMillis()
-
       // https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Embedded_Metric_Format_Specification.html
       val awsEmbededMetric =
         s""""_aws":{"Timestamp":$t1,"CloudWatchMetrics":[{"Namespace":"lambda-${functionName}-metrics","Dimensions":[${
@@ -388,7 +388,7 @@ trait LambdaRuntime extends EventHandler, EventHandlerTag {
               .getRuntime()
               .maxMemory()},"totalMemory":${Runtime
               .getRuntime()
-              .totalMemory()},"freeMemory":${Runtime.getRuntime().freeMemory()},$awsEmbededMetric,}"""
+              .totalMemory()},"freeMemory":${Runtime.getRuntime().freeMemory()},$awsEmbededMetric}"""
         else {
           s"[$id]$tag ${RESPONSE}LAMBDA RESPONSE [${t1 - t0}ms] ${AnsiColor.BOLD}$output"
         }