fix bug when instrumentation explicitly disabled (elastic#19355)

jsoriano · Jun 24, 2020 · 1498938 · 1498938
1 parent ebe5373
commit 1498938
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/libbeat/instrumentation/instrumentation.go b/libbeat/instrumentation/instrumentation.go
@@ -168,7 +168,7 @@ func initTracer(cfg Config, beatName, beatVersion string) (*instrumentation, err
 	if !cfg.IsEnabled() {
 		os.Setenv("ELASTIC_APM_ACTIVE", "false")
 		logger.Infof("APM instrumentation is disabled")
-		return nil, nil
+		return &instrumentation{}, nil
 	} else {
 		os.Setenv("ELASTIC_APM_ACTIVE", "true")
 		logger.Infof("APM instrumentation is enabled")

diff --git a/libbeat/instrumentation/instrumentation_test.go b/libbeat/instrumentation/instrumentation_test.go
@@ -80,3 +80,15 @@ func TestAPMTracerDisabledByDefault(t *testing.T) {
 	require.NotNil(t, tracer)
 	assert.False(t, tracer.Active())
 }
+
+func TestInstrumentationDisabled(t *testing.T) {
+	cfg := common.MustNewConfigFrom(map[string]interface{}{
+		"instrumentation": map[string]interface{}{
+			"enabled": "false",
+		},
+	})
+	instrumentation, err := New(cfg, "filebeat", version.GetDefaultVersion())
+	require.NoError(t, err)
+	require.NotNil(t, instrumentation)
+
+}