Migrate main.go

pkg/utils/k8sutil.go

@@ -0,0 +1,45 @@
+package utils
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strings"
+)
+
+var ForceRunModeEnv = "OSDK_FORCE_RUN_MODE"
+
+type RunModeType string
+
+const (
+	LocalRunMode   RunModeType = "local"
+	ClusterRunMode RunModeType = "cluster"
+)
+
+// ErrNoNamespace indicates that a namespace could not be found for the current
+// environment
+var ErrNoNamespace = fmt.Errorf("namespace not found for current environment")
+
+// ErrRunLocal indicates that the operator is set to run in local mode (this error
+// is returned by functions that only work on operators running in cluster mode)
+var ErrRunLocal = fmt.Errorf("operator run mode forced to local")
+
+// GetOperatorNamespace returns the namespace the operator should be running in.
+func GetOperatorNamespace() (string, error) {
+	if isRunModeLocal() {
+		return "", ErrRunLocal
+	}
+	nsBytes, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
+	if err != nil {
+		if os.IsNotExist(err) {
+			return "", ErrNoNamespace
+		}
+		return "", err
+	}
+	ns := strings.TrimSpace(string(nsBytes))
+	return ns, nil
+}
+
+func isRunModeLocal() bool {
+	return os.Getenv(ForceRunModeEnv) == string(LocalRunMode)
+}