From 272725c97f0d0b308cbb400db8f0ab8ae864845d Mon Sep 17 00:00:00 2001
From: Bogdan Drutu <bogdandrutu@gmail.com>
Date: Fri, 11 Oct 2019 13:59:50 -0700
Subject: [PATCH] Add option to completely skip the create metric descriptor
 logic. (#25)

Signed-off-by: Bogdan Drutu <bogdandrutu@gmail.com>
---
 exporter/stackdriverexporter/config.go            |  1 +
 exporter/stackdriverexporter/config_test.go       | 10 ++++++----
 exporter/stackdriverexporter/stackdriver.go       |  3 +++
 exporter/stackdriverexporter/testdata/config.yaml |  2 ++
 4 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/exporter/stackdriverexporter/config.go b/exporter/stackdriverexporter/config.go
index 3435828eac47..447276497b35 100644
--- a/exporter/stackdriverexporter/config.go
+++ b/exporter/stackdriverexporter/config.go
@@ -23,4 +23,5 @@ type Config struct {
 	Prefix                        string                   `mapstructure:"metric-prefix"`
 	Endpoint                      string                   `mapstructure:"endpoint"`
 	NumOfWorkers                  int                      `mapstructure:"number-of-workers"`
+	SkipCreateMetricDescriptor    bool                     `mapstructure:"skip-create-metric-descriptor"`
 }
diff --git a/exporter/stackdriverexporter/config_test.go b/exporter/stackdriverexporter/config_test.go
index 1c763b504f6d..3e19bbb31e9f 100644
--- a/exporter/stackdriverexporter/config_test.go
+++ b/exporter/stackdriverexporter/config_test.go
@@ -46,9 +46,11 @@ func TestLoadConfig(t *testing.T) {
 	r1 := cfg.Exporters["stackdriver/customname"].(*Config)
 	assert.Equal(t, r1,
 		&Config{
-			ExporterSettings: configmodels.ExporterSettings{TypeVal: typeStr, NameVal: "stackdriver/customname"},
-			ProjectID:        "my-project",
-			Prefix:           "prefix",
-			Endpoint:         "test-endpoint",
+			ExporterSettings:           configmodels.ExporterSettings{TypeVal: typeStr, NameVal: "stackdriver/customname"},
+			ProjectID:                  "my-project",
+			Prefix:                     "prefix",
+			Endpoint:                   "test-endpoint",
+			NumOfWorkers:               3,
+			SkipCreateMetricDescriptor: true,
 		})
 }
diff --git a/exporter/stackdriverexporter/stackdriver.go b/exporter/stackdriverexporter/stackdriver.go
index e2eae1299c85..edecfca020e3 100644
--- a/exporter/stackdriverexporter/stackdriver.go
+++ b/exporter/stackdriverexporter/stackdriver.go
@@ -75,6 +75,9 @@ func newStackdriverMetricsExporter(cfg *Config) (exporter.MetricsExporter, error
 	if cfg.NumOfWorkers > 0 {
 		options.NumberOfWorkers = cfg.NumOfWorkers
 	}
+	if cfg.SkipCreateMetricDescriptor {
+		options.SkipCMD = true
+	}
 	sde, serr := stackdriver.NewExporter(options)
 	if serr != nil {
 		return nil, fmt.Errorf("cannot configure Stackdriver metric exporter: %v", serr)
diff --git a/exporter/stackdriverexporter/testdata/config.yaml b/exporter/stackdriverexporter/testdata/config.yaml
index 0f4bbc385767..b8a982bb15ce 100644
--- a/exporter/stackdriverexporter/testdata/config.yaml
+++ b/exporter/stackdriverexporter/testdata/config.yaml
@@ -10,6 +10,8 @@ exporters:
     project: my-project
     metric-prefix: prefix
     endpoint: test-endpoint
+    number-of-workers: 3
+    skip-create-metric-descriptor: true
   stackdriver/disabled: # will be ignored
     disabled: true