From 57d2e1f319148218482f6bd099311b98bf64713c Mon Sep 17 00:00:00 2001
From: Yang Hu <yhuz@amazon.com>
Date: Thu, 27 Aug 2020 12:18:55 -0500
Subject: [PATCH] add check for nil

---
 exporter/prometheusremotewriteexporter/exporter.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/exporter/prometheusremotewriteexporter/exporter.go b/exporter/prometheusremotewriteexporter/exporter.go
index 2eaa3509ca8..ea1362ca965 100644
--- a/exporter/prometheusremotewriteexporter/exporter.go
+++ b/exporter/prometheusremotewriteexporter/exporter.go
@@ -90,10 +90,19 @@ func (prwe *prwExporter) pushMetrics(ctx context.Context, md pdata.Metrics) (int
 		errs := []string{}
 
 		resourceMetrics := data.MetricDataToOtlp(pdatautil.MetricsToInternalMetrics(md))
-		for _, r := range resourceMetrics {
-			for _, instMetrics := range r.InstrumentationLibraryMetrics {
+		for _, resourceMetric := range resourceMetrics {
+			if resourceMetric == nil {
+				continue
+			}
+			for _, instMetrics := range resourceMetric.InstrumentationLibraryMetrics {
+				if instMetrics == nil {
+					continue
+				}
 				// TODO: decide if instrumentation library information should be exported as labels
 				for _, metric := range instMetrics.Metrics {
+					if metric == nil {
+						continue
+					}
 					// check for valid type and temporality combination
 					if ok := validateMetrics(metric.MetricDescriptor); !ok {
 						dropped++