Add option to completely skip the create metric descriptor logic. (#25)

Signed-off-by: Bogdan Drutu <[email protected]>

Author: bogdandrutu

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"`
 }

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,
 		})
 }

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)

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