Initial QSfera import

Server/pkg/registry/expiry.go

@@ -0,0 +1,33 @@
+package registry
+
+import (
+	"os"
+	"time"
+)
+
+const (
+	_registryRegisterIntervalEnv = "EXPERIMENTAL_REGISTER_INTERVAL"
+	_registryRegisterTTLEnv      = "EXPERIMENTAL_REGISTER_TTL"
+
+	// Note: _defaultRegisterInterval should always be lower than _defaultRegisterTTL
+	_defaultRegisterInterval = time.Second * 25
+	_defaultRegisterTTL      = time.Second * 30
+)
+
+// GetRegisterInterval returns the register interval from the environment.
+func GetRegisterInterval() time.Duration {
+	d, err := time.ParseDuration(os.Getenv(_registryRegisterIntervalEnv))
+	if err != nil {
+		return _defaultRegisterInterval
+	}
+	return d
+}
+
+// GetRegisterTTL returns the register TTL from the environment.
+func GetRegisterTTL() time.Duration {
+	d, err := time.ParseDuration(os.Getenv(_registryRegisterTTLEnv))
+	if err != nil {
+		return _defaultRegisterTTL
+	}
+	return d
+}