Single dimension for Cold start

Author: Pankaj Agrawal

example/HelloWorldFunction/src/main/java/helloworld/App.java

@@ -47,9 +47,9 @@ public APIGatewayProxyResponseEvent handleRequest(final APIGatewayProxyRequestEv
 
         metricsLogger().putMetric("CustomMetric1", 1, Unit.COUNT);
 
-        withSingleMetric("CustomMetrics2", 1, Unit.COUNT, "Another", (logger) -> {
-            logger.setDimensions(DimensionSet.of("AnotherService", "CustomService"));
-            logger.setDimensions(DimensionSet.of("AnotherService1", "CustomService1"));
+        withSingleMetric("CustomMetrics2", 1, Unit.COUNT, "Another", (metric) -> {
+            metric.setDimensions(DimensionSet.of("AnotherService", "CustomService"));
+            metric.setDimensions(DimensionSet.of("AnotherService1", "CustomService1"));
         });
 
         PowertoolsLogger.appendKey("test", "willBeLogged");

powertools-metrics/src/main/java/software/amazon/lambda/powertools/metrics/internal/LambdaMetricsAspect.java

@@ -81,8 +81,7 @@ && isColdStart()) {
                 Context context = contextOptional.orElseThrow(() -> new IllegalStateException("Context not found"));
 
                 withSingleMetric("ColdStart", 1, Unit.COUNT, namespace(powertoolsMetrics), (logger) ->
-                        logger.setDimensions(DimensionSet.of("service", service(powertoolsMetrics)),
-                                DimensionSet.of("function_name", context.getFunctionName())));
+                        logger.setDimensions(DimensionSet.of("service", service(powertoolsMetrics), "function_name", context.getFunctionName())));
             }
         }
     }