Upgraded DataDog tracing library to 1.14.0

vendor/gopkg.in/DataDog/dd-trace-go.v1/internal/globalconfig/globalconfig.go

@@ -0,0 +1,28 @@
+// Package globalconfig stores configuration which applies globally to both the tracer
+// and integrations.
+package globalconfig
+
+import "sync"
+
+var cfg = &config{}
+
+type config struct {
+	mu            sync.RWMutex
+	analyticsRate float64
+}
+
+// AnalyticsRate returns the sampling rate at which events should be marked. It uses
+// synchronizing mechanisms, meaning that for optimal performance it's best to read it
+// once and store it.
+func AnalyticsRate() float64 {
+	cfg.mu.RLock()
+	defer cfg.mu.RUnlock()
+	return cfg.analyticsRate
+}
+
+// SetAnalyticsRate sets the given event sampling rate globally.
+func SetAnalyticsRate(rate float64) {
+	cfg.mu.Lock()
+	cfg.analyticsRate = rate
+	cfg.mu.Unlock()
+}