Add logic to parse longhorn cattle config

Signed-off-by: hamistao <[email protected]>

Author: hamistao

interoperability/longhorn/longhorn.go

@@ -0,0 +1,50 @@
+package longhorn
+
+import (
+	"fmt"
+	"slices"
+
+	"github.com/rancher/shepherd/pkg/config"
+	"github.com/rancher/tests/actions/storage"
+)
+
+// The json/yaml config key for the corral package to be build ..
+const (
+	longhornTestConfigConfigurationFileKey = "longhorn"
+	LonghornTestDefaultProject             = "longhorn-test"
+	LonghornTestDefaultStorageClass        = "longhorn"
+)
+
+type TestConfig struct {
+	LonghornTestProject      string `json:"testProject,omitempty"`
+	LonghornTestStorageClass string `json:"testStorageClass,omitempty"`
+}
+
+// GetLonghornTestConfig gets a LonghornTestConfig object using the data from the config file.
+func GetLonghornTestConfig() *TestConfig {
+	var longhornTestConfig TestConfig
+	config.LoadConfig(longhornTestConfigConfigurationFileKey, &longhornTestConfig)
+
+	defer func() {
+		if r := recover(); r != nil {
+			longhornTestConfig = TestConfig{
+				LonghornTestProject:      LonghornTestDefaultProject,
+				LonghornTestStorageClass: LonghornTestDefaultStorageClass,
+			}
+		} else {
+			if !slices.Contains(storage.LonghornStorageClasses, longhornTestConfig.LonghornTestStorageClass) {
+				panic(fmt.Errorf("Invalid storage class %s", longhornTestConfig.LonghornTestStorageClass))
+			}
+		}
+	}()
+
+	if longhornTestConfig.LonghornTestProject == "" {
+		longhornTestConfig.LonghornTestProject = LonghornTestDefaultProject
+	}
+
+	if longhornTestConfig.LonghornTestStorageClass == "" {
+		longhornTestConfig.LonghornTestStorageClass = LonghornTestDefaultStorageClass
+	}
+
+	return &longhornTestConfig
+}