Check illegal characters

datasetIngestor/checkMetadata.go

@@ -64,6 +64,11 @@ func CheckMetadata(client *http.Client, APIServer string, metadatafile string, u
 	metaDataMap = metadataObj.(map[string]interface{})
 	beamlineAccount = false
 
+		// Check scientificMetadata for illegal keys
+	if checkIllegalKeys(metaDataMap) {
+		log.Fatal("Metadata contains keys with illegal characters (., [], or <>).")
+	}
+
 	if user["displayName"] != "ingestor" {
 		if ownerGroup, ok := metaDataMap["ownerGroup"]; ok {
 			validOwner := false
@@ -259,3 +264,43 @@ func CheckMetadata(client *http.Client, APIServer string, metadatafile string, u
 	return metaDataMap, sourceFolder, beamlineAccount
 
 }
+
+// checkIllegalKeys checks whether the metadata contains illegal keys
+func checkIllegalKeys(metadata map[string]interface{}) bool {
+	for _, item := range metadata {
+		// Use a type switch to check if the item is a slice of interface{} type, e.g. the scientificMetadata key.
+		switch v := item.(type) {
+		case []interface{}:
+			// If the item is a slice of interface{}, iterate over each subItem in the slice.
+			for _, subItem := range v {
+				if subMap, ok := subItem.(map[string]interface{}); ok {
+					if containsIllegalKeys(subMap) {
+						return true
+					}
+				}
+			}
+		}
+	}
+	return false
+}
+
+// containsIllegalKeys checks whether the key contains illegal characters
+func containsIllegalKeys(m map[string]interface{}) bool {
+	for k := range m {
+		if containsIllegalCharacters(k) {
+			return true
+		}
+	}
+	return false
+}
+
+func containsIllegalCharacters(s string) bool {
+	// Check if the string contains periods, brackets, or other illegal characters
+	// You can adjust this condition based on your specific requirements
+	for _, char := range s {
+		if char == '.' || char == '[' || char == ']' || char == '<' || char == '>' {
+			return true
+		}
+	}
+	return false
+}