Initial cloud-services repo - gateway service + pkg modules

pkg/utils/envtool/env.go

@@ -0,0 +1,64 @@
+package envtool
+
+import (
+	"os"
+	"strconv"
+	"time"
+)
+
+// GetEnv return enviroment variable or default value if not set
+func GetEnv(name string, defaultValue string) string {
+	value, ok := os.LookupEnv(name)
+	if ok && len(value) > 0 {
+		return value
+	}
+	return defaultValue
+}
+
+// GetEnvInt returns environment variable or default value if not set
+func GetEnvInt(name string, defaultValue int) int {
+	value, ok := os.LookupEnv(name)
+	if ok && len(value) > 0 {
+		i, err := strconv.Atoi(value)
+		if err == nil {
+			return i
+		}
+	}
+	return defaultValue
+}
+
+// GetEnvInt returns environment variable or default value if not set
+func GetEnvInt64(name string, defaultValue int64) int64 {
+	value, ok := os.LookupEnv(name)
+	if ok && len(value) > 0 {
+		i, err := strconv.ParseInt(value, 10, 0)
+		if err == nil {
+			return i
+		}
+	}
+	return defaultValue
+}
+
+// GetEnvBool returns environment variable or default value if not set
+func GetEnvBool(name string, defaultValue bool) bool {
+	value, ok := os.LookupEnv(name)
+	if !ok {
+		return defaultValue
+	}
+	val, err := strconv.ParseBool(value)
+	if err != nil {
+		return defaultValue
+	}
+	return val
+}
+
+func GetEnvDuration(name string, defaultValue time.Duration) time.Duration {
+	value, ok := os.LookupEnv(name)
+	if ok && len(value) > 0 {
+		d, err := time.ParseDuration(value)
+		if err == nil {
+			return d
+		}
+	}
+	return defaultValue
+}